/* =========================================================================
   CODE WITHIN — UNIQUE HOMEPAGE DESIGN SYSTEM (FULL STYLESHEET)
   ========================================================================= */

/* Base Page Wrapper */
.home-page {
    max-width: 1280px;
    margin: 0 auto;
    padding: 24px 24px 60px 24px;
    box-sizing: border-box;
}

@keyframes fadeIn {
    from { opacity: 0; }
    to { opacity: 1; }
}

@keyframes fadeInUp {
    from {
        opacity: 0;
        transform: translateY(12px);
    }
    to {
        opacity: 1;
        transform: translateY(0);
    }
}

/* Common Section Headers */
.section-header {
    text-align: center;
    margin-bottom: 32px;
}

.section-label {
    display: inline-flex;
    align-items: center;
    gap: 6px;
    background: var(--purple-light, rgba(108, 76, 232, 0.08));
    color: var(--accent-purple, #6C4CE8);
    font-size: 12px;
    font-weight: 700;
    text-transform: uppercase;
    letter-spacing: 0.08em;
    padding: 6px 14px;
    border-radius: 9999px;
    border: 1px solid rgba(108, 76, 232, 0.16);
    margin-bottom: 12px;
}

.section-header h2 {
    font-size: 32px;
    font-weight: 850;
    letter-spacing: -0.6px;
    color: var(--text-primary, #0F172A);
    margin: 0 0 10px 0;
}

.section-header p {
    font-size: 15px;
    color: var(--text-secondary, #64748B);
    max-width: 640px;
    margin: 0 auto;
    line-height: 1.6;
}

/* =========================================================================
   1. HERO SPLIT (LIVE CODE SANDBOX & RADAR)
   ========================================================================= */
.home-hero-split {
    display: grid;
    grid-template-columns: 1.15fr 1fr;
    gap: 36px;
    align-items: center;
    background: linear-gradient(135deg, rgba(245, 243, 255, 0.9) 0%, rgba(240, 249, 255, 0.75) 50%, rgba(236, 253, 245, 0.65) 100%);
    border: 1px solid rgba(108, 76, 232, 0.16);
    border-radius: 28px;
    padding: 48px 40px;
    margin-bottom: 36px;
    position: relative;
    overflow: hidden;
    box-shadow: 0 10px 40px rgba(108, 76, 232, 0.07);
}

.home-hero-split::before {
    content: '';
    position: absolute;
    top: -120px;
    right: -100px;
    width: 400px;
    height: 400px;
    background: radial-gradient(circle, rgba(108, 76, 232, 0.15) 0%, transparent 70%);
    border-radius: 50%;
    pointer-events: none;
}

.home-hero-split::after {
    content: '';
    position: absolute;
    bottom: -80px;
    left: 20%;
    width: 320px;
    height: 320px;
    background: radial-gradient(circle, rgba(14, 165, 233, 0.12) 0%, transparent 70%);
    border-radius: 50%;
    pointer-events: none;
}

.hero-left {
    position: relative;
    z-index: 2;
}

.hero-status-pill {
    display: inline-flex;
    align-items: center;
    gap: 8px;
    background: #FFFFFF;
    border: 1px solid rgba(108, 76, 232, 0.2);
    padding: 6px 16px;
    border-radius: 9999px;
    font-size: 12px;
    font-weight: 750;
    letter-spacing: 0.03em;
    color: var(--accent-purple, #6C4CE8);
    margin-bottom: 20px;
    box-shadow: 0 2px 10px rgba(108, 76, 232, 0.06);
}

.hero-status-pill .live-indicator {
    width: 8px;
    height: 8px;
    border-radius: 50%;
    background: #10B981;
}

.hero-title {
    font-size: 42px;
    font-weight: 850;
    line-height: 1.15;
    letter-spacing: -1.2px;
    color: var(--text-primary, #0F172A);
    margin: 0 0 16px 0;
}

.hero-title .gradient-brand {
    background: linear-gradient(135deg, #6C4CE8 0%, #0EA5E9 50%, #10B981 100%);
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
    background-clip: text;
}

.hero-subtitle {
    font-size: 15.5px;
    color: var(--text-secondary, #475569);
    line-height: 1.65;
    margin: 0 0 24px 0;
    max-width: 540px;
}

.hero-stats-strip {
    display: flex;
    flex-wrap: wrap;
    gap: 10px;
    margin-bottom: 28px;
}

.hero-stat-badge {
    display: inline-flex;
    align-items: center;
    gap: 6px;
    background: rgba(255, 255, 255, 0.9);
    border: 1px solid rgba(226, 232, 240, 0.9);
    padding: 6px 14px;
    border-radius: 10px;
    font-size: 13px;
    font-weight: 600;
    color: var(--text-primary, #1E293B);
    box-shadow: 0 2px 6px rgba(0, 0, 0, 0.03);
}

.hero-stat-badge strong {
    color: var(--accent-purple, #6C4CE8);
}

.hero-actions-row {
    display: flex;
    gap: 12px;
    flex-wrap: wrap;
}

.hero-btn {
    text-decoration: none;
    font-size: 14.5px;
    font-weight: 700;
    padding: 12px 24px;
    border-radius: 12px;
    display: inline-flex;
    align-items: center;
    gap: 8px;
    transition: all 0.2s cubic-bezier(0.16, 1, 0.3, 1);
}

.hero-btn-primary {
    background: linear-gradient(135deg, #6C4CE8, #8B5CF6);
    color: #FFFFFF;
    box-shadow: 0 4px 16px rgba(108, 76, 232, 0.35);
}

.hero-btn-primary:hover {
    transform: translateY(-2px);
    box-shadow: 0 8px 24px rgba(108, 76, 232, 0.45);
}

.hero-btn-secondary {
    background: #FFFFFF;
    color: var(--text-primary, #1E293B);
    border: 1.5px solid rgba(108, 76, 232, 0.25);
}

.hero-btn-secondary:hover {
    background: var(--purple-light, rgba(108, 76, 232, 0.08));
    border-color: var(--accent-purple, #6C4CE8);
    transform: translateY(-2px);
}

/* Right Hero: Minimalist Developer Terminal Graphic (Non-interactive clean visual) */
.hero-right {
    position: relative;
    z-index: 2;
}

.hero-terminal-card {
    background: #0D0A14;
    border: 1px solid rgba(255, 255, 255, 0.12);
    border-radius: 20px;
    box-shadow: 0 20px 50px rgba(0, 0, 0, 0.35), 0 0 0 1px rgba(108, 76, 232, 0.2);
    overflow: hidden;
    display: flex;
    flex-direction: column;
}

.terminal-bar {
    background: #150F21;
    border-bottom: 1px solid rgba(255, 255, 255, 0.08);
    padding: 12px 18px;
    display: flex;
    justify-content: space-between;
    align-items: center;
}

.terminal-dots {
    display: flex;
    gap: 7px;
}

.terminal-dots .dot {
    width: 11px;
    height: 11px;
    border-radius: 50%;
    display: inline-block;
}

.terminal-dots .dot.red { background: #FF5F56; }
.terminal-dots .dot.yellow { background: #FFBD2E; }
.terminal-dots .dot.green { background: #27C93F; }

.terminal-tab {
    font-size: 12px;
    font-weight: 600;
    color: #94A3B8;
    font-family: 'Fira Code', Consolas, Monaco, monospace;
    background: rgba(255, 255, 255, 0.04);
    padding: 4px 12px;
    border-radius: 6px;
    border: 1px solid rgba(255, 255, 255, 0.06);
}

.terminal-badge {
    font-size: 10px;
    font-weight: 750;
    letter-spacing: 0.5px;
    color: #10B981;
    background: rgba(16, 185, 129, 0.12);
    border: 1px solid rgba(16, 185, 129, 0.3);
    padding: 3px 8px;
    border-radius: 999px;
    display: inline-flex;
    align-items: center;
    gap: 4px;
}

.terminal-content {
    padding: 20px 22px;
    font-size: 13px;
    line-height: 1.6;
    color: #E2E8F0;
    overflow-x: auto;
    background: #0B0810;
}

.code-line {
    white-space: pre;
    font-family: 'Fira Code', 'Cascadia Code', Consolas, Monaco, monospace;
}

.code-line.indent {
    padding-left: 20px;
}

.code-line.empty {
    height: 8px;
}

/* Syntax Highlighting */
.c-keyword { color: #C084FC; font-weight: 600; }
.c-func { color: #38BDF8; }
.c-str { color: #34D399; }
.c-var { color: #F8FAFC; font-weight: 600; }
.c-prop { color: #93C5FD; }
.c-num { color: #FBBF24; }
.c-comment { color: #64748B; font-style: italic; }
.c-bool { color: #F472B6; font-weight: 600; }

.terminal-status-row {
    display: flex;
    align-items: center;
    gap: 8px;
    padding-top: 10px;
    border-top: 1px dashed rgba(255, 255, 255, 0.1);
    margin-top: 6px;
    font-size: 12px;
    color: #10B981;
    font-family: -apple-system, BlinkMacSystemFont, 'Segoe UI', Roboto, sans-serif;
}

.status-indicator {
    color: #10B981;
    font-size: 10px;
}

.status-msg {
    color: #10B981;
    font-weight: 500;
}

.terminal-bottom-stats {
    display: grid;
    grid-template-columns: repeat(4, 1fr);
    background: #130E1E;
    border-top: 1px solid rgba(255, 255, 255, 0.08);
    padding: 14px 10px;
    text-align: center;
}

.stat-cell {
    display: flex;
    flex-direction: column;
    gap: 3px;
    border-right: 1px solid rgba(255, 255, 255, 0.06);
    padding: 0 4px;
}

.stat-cell:last-child {
    border-right: none;
}

.stat-num {
    font-size: 17px;
    font-weight: 850;
    background: linear-gradient(135deg, #A855F7, #38BDF8);
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
    background-clip: text;
    font-family: -apple-system, BlinkMacSystemFont, 'Segoe UI', Roboto, sans-serif;
}

.stat-lbl {
    font-size: 10.5px;
    font-weight: 600;
    color: #94A3B8;
    text-transform: uppercase;
    letter-spacing: 0.4px;
    font-family: -apple-system, BlinkMacSystemFont, 'Segoe UI', Roboto, sans-serif;
}
.radar-fill.fill-blue { background: linear-gradient(90deg, #0EA5E9, #38BDF8); }
.radar-fill.fill-emerald { background: linear-gradient(90deg, #10B981, #34D399); }
.radar-fill.fill-amber { background: linear-gradient(90deg, #F59E0B, #FBBF24); }
.radar-fill.fill-cyan { background: linear-gradient(90deg, #06B6D4, #22D3EE); }

/* =========================================================================
   2. INSTANT GLOBAL TOPIC SEARCH & COMMAND PALETTE (EXECUTIVE COMMAND BAR)
   ========================================================================= */
.search-container {
    position: relative;
    margin-bottom: 40px;
    z-index: 25;
}

.search-command-wrapper {
    background: #FFFFFF;
    border: 1.5px solid rgba(108, 76, 232, 0.18);
    border-radius: 20px;
    padding: 10px 14px;
    box-shadow: 0 6px 24px rgba(108, 76, 232, 0.07), 0 1px 3px rgba(0, 0, 0, 0.04);
    transition: all 0.25s cubic-bezier(0.16, 1, 0.3, 1);
}

.search-command-wrapper:focus-within {
    border-color: #6C4CE8;
    box-shadow: 0 12px 36px rgba(108, 76, 232, 0.16), 0 0 0 3px rgba(108, 76, 232, 0.12);
    transform: translateY(-1px);
}

.search-input-card {
    display: flex;
    align-items: center;
    gap: 12px;
    padding: 2px 4px;
}

.search-icon-badge {
    display: flex;
    align-items: center;
    justify-content: center;
    width: 36px;
    height: 36px;
    border-radius: 10px;
    background: rgba(108, 76, 232, 0.08);
    color: var(--accent-purple, #6C4CE8);
    flex-shrink: 0;
    transition: transform 0.2s ease;
}

.search-command-wrapper:focus-within .search-icon-badge {
    transform: scale(1.08);
    background: linear-gradient(135deg, rgba(108, 76, 232, 0.18), rgba(14, 165, 233, 0.18));
}

.home-search-input {
    flex: 1;
    border: none;
    outline: none;
    font-size: 15px;
    font-weight: 550;
    color: var(--text-primary, #0F172A);
    background: transparent;
    padding: 8px 0;
    font-family: inherit;
}

.home-search-input::placeholder {
    color: var(--text-muted, #94A3B8);
    font-weight: 450;
}

.search-shortcut-badge {
    display: inline-flex;
    align-items: center;
    gap: 4px;
    background: var(--bg-primary, #F8FAFC);
    border: 1px solid var(--border-color, #E2E8F0);
    padding: 4px 10px;
    border-radius: 8px;
    font-size: 11px;
    font-weight: 700;
    color: var(--text-secondary, #64748B);
    box-shadow: 0 1px 2px rgba(0, 0, 0, 0.04);
}

.search-shortcut-badge kbd {
    font-family: inherit;
    font-weight: 800;
}

.search-clear-btn {
    background: #F1F5F9;
    border: none;
    width: 26px;
    height: 26px;
    border-radius: 50%;
    color: var(--text-secondary, #64748B);
    font-size: 12px;
    font-weight: 800;
    cursor: pointer;
    display: none;
    align-items: center;
    justify-content: center;
    transition: all 0.15s ease;
}

.search-clear-btn:hover {
    background: #E2E8F0;
    color: var(--text-primary, #0F172A);
}

/* Quick Trending Prompt Chips */
.search-quick-tags {
    display: flex;
    align-items: center;
    gap: 8px;
    padding-top: 10px;
    margin-top: 8px;
    border-top: 1px solid rgba(226, 232, 240, 0.7);
    flex-wrap: wrap;
}

.quick-tags-label {
    font-size: 11.5px;
    font-weight: 750;
    color: var(--text-muted, #94A3B8);
    text-transform: uppercase;
    letter-spacing: 0.04em;
}

.quick-tag-btn {
    background: rgba(108, 76, 232, 0.05);
    border: 1px solid rgba(108, 76, 232, 0.15);
    color: var(--text-secondary, #475569);
    font-size: 11.5px;
    font-weight: 650;
    padding: 3px 10px;
    border-radius: 6px;
    cursor: pointer;
    transition: all 0.15s ease;
}

.quick-tag-btn:hover {
    background: var(--accent-purple, #6C4CE8);
    border-color: var(--accent-purple, #6C4CE8);
    color: #FFFFFF;
    transform: translateY(-1px);
    box-shadow: 0 2px 8px rgba(108, 76, 232, 0.25);
}

/* Filter Chips with Count Badges */
.search-filter-pills {
    display: flex;
    justify-content: space-between;
    align-items: center;
    margin-top: 14px;
    flex-wrap: wrap;
    gap: 10px;
}

.filter-chips-group {
    display: flex;
    gap: 8px;
    flex-wrap: wrap;
}

.search-filter-chip {
    display: inline-flex;
    align-items: center;
    gap: 6px;
    background: #FFFFFF;
    border: 1px solid var(--border-color, #E2E8F0);
    color: var(--text-secondary, #64748B);
    font-size: 12px;
    font-weight: 700;
    padding: 6px 14px;
    border-radius: 999px;
    cursor: pointer;
    transition: all 0.2s cubic-bezier(0.16, 1, 0.3, 1);
    box-shadow: 0 1px 3px rgba(0, 0, 0, 0.02);
}

.search-filter-chip .chip-count {
    font-size: 10.5px;
    font-weight: 800;
    background: #F1F5F9;
    color: var(--text-muted, #64748B);
    padding: 1px 6px;
    border-radius: 999px;
    transition: all 0.2s ease;
}

.search-filter-chip:hover {
    border-color: #6C4CE8;
    color: #6C4CE8;
    transform: translateY(-1px);
}

.search-filter-chip.active {
    background: linear-gradient(135deg, #6C4CE8, #8B5CF6);
    border-color: #6C4CE8;
    color: #FFFFFF;
    box-shadow: 0 4px 14px rgba(108, 76, 232, 0.3);
}

.search-filter-chip.active .chip-count {
    background: rgba(255, 255, 255, 0.25);
    color: #FFFFFF;
}

.search-result-count {
    font-size: 12px;
    color: var(--text-muted, #94A3B8);
    font-weight: 650;
}

/* Search Dropdown Results */
.search-results-dropdown {
    position: absolute;
    top: calc(100% + 8px);
    left: 0;
    right: 0;
    background: #FFFFFF;
    border: 1px solid var(--border-color, #E2E8F0);
    border-radius: 18px;
    box-shadow: 0 20px 50px rgba(0, 0, 0, 0.14), 0 0 0 1px rgba(108, 76, 232, 0.06);
    max-height: 420px;
    overflow-y: auto;
    display: none;
    flex-direction: column;
    z-index: 60;
    padding: 8px;
    backdrop-filter: blur(16px);
}

.search-results-dropdown.visible {
    display: flex;
    animation: searchDropdownFade 0.2s cubic-bezier(0.16, 1, 0.3, 1);
}

@keyframes searchDropdownFade {
    from { opacity: 0; transform: translateY(-6px) scale(0.99); }
    to { opacity: 1; transform: translateY(0) scale(1); }
}

.search-item {
    display: flex;
    align-items: center;
    gap: 12px;
    padding: 11px 16px;
    border-radius: 12px;
    text-decoration: none;
    color: var(--text-primary, #0F172A);
    transition: all 0.15s ease;
}

.search-item:hover, .search-item.selected {
    background: var(--purple-light, rgba(108, 76, 232, 0.08));
    transform: translateX(3px);
}

.search-track-badge {
    font-size: 10px;
    font-weight: 850;
    padding: 3px 9px;
    border-radius: 6px;
    letter-spacing: 0.04em;
    flex-shrink: 0;
    text-transform: uppercase;
}

.badge-html { background: #FFF7ED; color: #C2410C; border: 1px solid #FED7AA; }
.badge-css { background: #F0F9FF; color: #0369A1; border: 1px solid #BAE6FD; }
.badge-js { background: #FFFBEB; color: #92400E; border: 1px solid #FDE68A; }
.badge-react { background: #ECFEFF; color: #0E7490; border: 1px solid #A5F3FC; }

.search-item-title {
    font-size: 14px;
    font-weight: 650;
    flex: 1;
    color: var(--text-primary, #0F172A);
}

.search-highlight {
    background: rgba(234, 179, 8, 0.3);
    color: var(--text-primary, #0F172A);
    padding: 0 3px;
    border-radius: 4px;
    font-weight: 750;
}

.search-arrow {
    color: var(--accent-purple, #6C4CE8);
    font-weight: 800;
    font-size: 15px;
    opacity: 0.7;
    transition: transform 0.15s ease, opacity 0.15s ease;
}

.search-item:hover .search-arrow, .search-item.selected .search-arrow {
    opacity: 1;
    transform: translateX(3px);
}

.search-empty-state {
    padding: 36px 20px;
    text-align: center;
    color: var(--text-secondary, #64748B);
}

.search-empty-state span {
    font-size: 32px;
    display: block;
    margin-bottom: 10px;
}

.search-more-hint {
    padding: 10px;
    text-align: center;
    font-size: 12px;
    color: var(--text-muted, #94A3B8);
    font-weight: 650;
    border-top: 1px solid var(--border-subtle, #F1F5F9);
}

/* =========================================================================
   3. LEARNING PROGRESS & RESUME DASHBOARD (MISSION CONTROL TELEMETRY)
   ========================================================================= */
.progress-resume-strip {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 24px;
    margin-bottom: 48px;
}

.progress-card, .resume-card {
    position: relative;
    background: #FFFFFF;
    border: 1px solid var(--border-color, #E2E8F0);
    border-radius: 22px;
    padding: 24px 28px;
    box-shadow: 0 4px 20px rgba(0, 0, 0, 0.03);
    display: flex;
    flex-direction: column;
    justify-content: space-between;
    overflow: hidden;
    transition: all 0.25s cubic-bezier(0.16, 1, 0.3, 1);
}

.progress-card-ambient, .resume-card-ambient {
    position: absolute;
    top: -40px;
    right: -40px;
    width: 140px;
    height: 140px;
    border-radius: 50%;
    background: radial-gradient(circle, rgba(108, 76, 232, 0.08) 0%, transparent 70%);
    pointer-events: none;
    z-index: 1;
}

.resume-card-ambient {
    background: radial-gradient(circle, rgba(14, 165, 233, 0.1) 0%, transparent 70%);
}

.progress-header, .resume-header {
    display: flex;
    justify-content: space-between;
    align-items: center;
    margin-bottom: 16px;
    position: relative;
    z-index: 2;
}

.telemetry-badge, .resume-mission-pill {
    display: inline-flex;
    align-items: center;
    gap: 8px;
    font-size: 11.5px;
    font-weight: 800;
    color: var(--text-secondary, #475569);
    text-transform: uppercase;
    letter-spacing: 0.05em;
}

.rocket-icon {
    font-size: 14px;
    display: inline-block;
    transition: transform 0.2s ease;
}

.resume-card:hover .rocket-icon {
    transform: translateY(-2px) scale(1.1);
}

.resume-label {
    font-size: 11.5px;
    font-weight: 800;
    color: var(--text-secondary, #475569);
    letter-spacing: 0.04em;
}

.pulse-dot {
    width: 8px;
    height: 8px;
    border-radius: 50%;
    background: #10B981;
}

.mastery-tier-badge {
    font-size: 11px;
    font-weight: 800;
    padding: 3px 10px;
    border-radius: 999px;
    background: rgba(108, 76, 232, 0.08);
    color: var(--accent-purple, #6C4CE8);
    border: 1px solid rgba(108, 76, 232, 0.2);
}

.progress-main-content {
    position: relative;
    z-index: 2;
}

.progress-stats-row {
    display: flex;
    justify-content: space-between;
    align-items: flex-end;
    margin-bottom: 14px;
    flex-wrap: wrap;
    gap: 12px;
}

.progress-metric-big .progress-number {
    font-size: 22px;
    font-weight: 850;
    color: var(--text-primary, #0F172A);
    display: block;
    line-height: 1.2;
}

.progress-number-sub {
    font-size: 12px;
    font-weight: 650;
    color: var(--text-muted, #94A3B8);
}

.progress-mini-stats {
    display: flex;
    gap: 16px;
}

.mini-stat-cell {
    display: flex;
    flex-direction: column;
    gap: 2px;
}

.mini-stat-label {
    font-size: 10.5px;
    font-weight: 750;
    color: var(--text-muted, #94A3B8);
    text-transform: uppercase;
    letter-spacing: 0.03em;
}

.mini-stat-val {
    font-size: 12.5px;
    font-weight: 750;
    color: var(--text-primary, #1E293B);
}

.mini-stat-val.status-active {
    color: #10B981;
}

.progress-bar-container {
    height: 9px;
    background: #F1F5F9;
    border-radius: 999px;
    overflow: hidden;
    margin-bottom: 12px;
    box-shadow: inset 0 1px 2px rgba(0, 0, 0, 0.05);
}

.progress-bar-fill {
    height: 100%;
    background: linear-gradient(90deg, #6C4CE8 0%, #0EA5E9 50%, #10B981 100%);
    border-radius: 999px;
    transition: width 0.7s cubic-bezier(0.16, 1, 0.3, 1);
    box-shadow: 0 0 10px rgba(108, 76, 232, 0.4);
}

.progress-track-breakdown {
    display: flex;
    gap: 8px;
    margin-top: 6px;
}

.track-dot {
    font-size: 10.5px;
    font-weight: 750;
    padding: 2px 8px;
    border-radius: 6px;
}

.track-dot.html { background: rgba(234, 88, 12, 0.08); color: #C2410C; }
.track-dot.css { background: rgba(2, 132, 199, 0.08); color: #0284C7; }
.track-dot.js { background: rgba(217, 119, 6, 0.08); color: #D97706; }
.track-dot.react { background: rgba(8, 145, 178, 0.08); color: #0891B2; }

/* Resume Card: Mission Warp */
.resume-card {
    text-decoration: none;
    color: inherit;
    border: 1px solid rgba(14, 165, 233, 0.25);
    background: linear-gradient(135deg, #FFFFFF 0%, #F8FAFC 100%);
}

.resume-card:hover {
    transform: translateY(-3px);
    border-color: #0EA5E9;
    box-shadow: 0 16px 36px rgba(14, 165, 233, 0.12), 0 0 0 1px rgba(14, 165, 233, 0.2);
}

.resume-badge-time {
    font-size: 11px;
    font-weight: 750;
    color: var(--text-muted, #64748B);
    background: #F1F5F9;
    padding: 3px 10px;
    border-radius: 999px;
}

.resume-body {
    position: relative;
    z-index: 2;
    margin: 8px 0 16px 0;
}

.resume-track-tag {
    font-size: 10.5px;
    font-weight: 800;
    color: #0284C7;
    text-transform: uppercase;
    letter-spacing: 0.05em;
    display: inline-block;
    margin-bottom: 4px;
}

.resume-body h4 {
    margin: 0 0 6px 0;
    font-size: 16.5px;
    font-weight: 800;
    color: var(--text-primary, #0F172A);
    line-height: 1.35;
}

.resume-body p {
    margin: 0;
    font-size: 12.5px;
    color: var(--text-secondary, #64748B);
    line-height: 1.5;
}

.resume-footer-action {
    display: flex;
    justify-content: flex-end;
    position: relative;
    z-index: 2;
}

.resume-action-btn {
    display: inline-flex;
    align-items: center;
    gap: 8px;
    font-size: 13px;
    font-weight: 750;
    color: #FFFFFF;
    background: linear-gradient(135deg, #0EA5E9, #0284C7);
    padding: 8px 18px;
    border-radius: 10px;
    box-shadow: 0 4px 14px rgba(14, 165, 233, 0.3);
    transition: all 0.2s cubic-bezier(0.16, 1, 0.3, 1);
}

.resume-card:hover .resume-action-btn {
    background: linear-gradient(135deg, #0284C7, #6C4CE8);
    transform: translateX(2px);
    box-shadow: 0 6px 20px rgba(14, 165, 233, 0.45);
}

.resume-action-btn svg {
    transition: transform 0.2s ease;
}

.resume-card:hover .resume-action-btn svg {
    transform: translateX(3px);
}

/* =========================================================================
   4. INTERACTIVE CONCEPT STUDIO (3 MICRO-SIMULATORS)
   ========================================================================= */
.concept-studio-section {
    background: #FFFFFF;
    border: 1px solid var(--border-color, #E2E8F0);
    border-radius: 24px;
    padding: 32px;
    margin-bottom: 48px;
    box-shadow: 0 4px 20px rgba(0, 0, 0, 0.03);
}

.concept-header-row {
    display: flex;
    justify-content: space-between;
    align-items: center;
    margin-bottom: 24px;
    flex-wrap: wrap;
    gap: 16px;
}

.concept-nav-tabs {
    display: flex;
    gap: 8px;
    background: var(--bg-primary, #F8FAFC);
    padding: 4px;
    border-radius: 12px;
    border: 1px solid var(--border-color, #E2E8F0);
}

.concept-tab-btn {
    background: transparent;
    border: none;
    padding: 8px 16px;
    border-radius: 8px;
    font-size: 13px;
    font-weight: 700;
    color: var(--text-secondary, #64748B);
    cursor: pointer;
    transition: all 0.15s ease;
}

.concept-tab-btn.active {
    background: #6C4CE8;
    color: #FFFFFF;
    box-shadow: 0 2px 8px rgba(108, 76, 232, 0.3);
}

.concept-content {
    display: none;
}

.concept-content.active {
    display: block;
    animation: fadeIn 0.25s ease;
}

/* Micro-Tool 1: Flexbox Sandbox */
.flex-studio-grid {
    display: grid;
    grid-template-columns: 260px 1fr 280px;
    gap: 20px;
}

.flex-controls-panel {
    display: flex;
    flex-direction: column;
    gap: 12px;
    background: var(--bg-primary, #F8FAFC);
    padding: 16px;
    border-radius: 14px;
    border: 1px solid var(--border-color, #E2E8F0);
}

.control-group {
    display: flex;
    flex-direction: column;
    gap: 6px;
}

.control-group label {
    font-size: 11.5px;
    font-weight: 700;
    color: var(--text-secondary, #64748B);
    letter-spacing: 0.3px;
    text-transform: uppercase;
}

.control-group select {
    background-color: #FFFFFF;
    border: 1.5px solid var(--border-color, #CBD5E1);
    padding: 8px 12px;
    border-radius: 9px;
    font-size: 13px;
    font-weight: 600;
    color: var(--text-primary, #0F172A);
    outline: none;
    cursor: pointer;
    transition: all 0.2s ease;
    box-shadow: 0 1px 2px rgba(0, 0, 0, 0.05);
}

.control-group select:focus {
    border-color: #6C4CE8;
    box-shadow: 0 0 0 3px rgba(108, 76, 232, 0.15);
}

.control-group select option {
    background-color: #FFFFFF;
    color: #0F172A;
    padding: 6px 10px;
    font-weight: 500;
}

.flex-canvas-container {
    background: #0B0810;
    border-radius: 16px;
    padding: 20px;
    display: flex;
    min-height: 240px;
    border: 1px solid rgba(255, 255, 255, 0.1);
    box-shadow: inset 0 2px 10px rgba(0, 0, 0, 0.5);
    box-sizing: border-box;
}

.flex-item-box {
    background: linear-gradient(135deg, #6C4CE8, #3B82F6);
    color: #FFFFFF;
    padding: 16px 20px;
    border-radius: 10px;
    font-weight: 700;
    font-size: 13px;
    box-shadow: 0 4px 12px rgba(108, 76, 232, 0.3);
    transition: all 0.25s ease;
}

.flex-code-output {
    background: #0F172A;
    border-radius: 14px;
    padding: 16px;
    display: flex;
    flex-direction: column;
    gap: 8px;
}

.code-title {
    font-size: 11px;
    font-weight: 800;
    color: #94A3B8;
    text-transform: uppercase;
}

.flex-code-output pre {
    margin: 0;
    font-family: 'Consolas', monospace;
    font-size: 12px;
    color: #38BDF8;
    line-height: 1.5;
}

/* Micro-Tool 2: Event Loop */
.event-loop-grid {
    display: grid;
    grid-template-columns: repeat(4, 1fr);
    gap: 16px;
    margin-bottom: 16px;
}

.loop-column {
    background: #0B0810;
    border: 1px solid rgba(255, 255, 255, 0.1);
    border-radius: 14px;
    padding: 16px;
    display: flex;
    flex-direction: column;
    min-height: 200px;
}

.loop-col-title {
    font-size: 12px;
    font-weight: 800;
    color: #94A3B8;
    margin-bottom: 12px;
    display: flex;
    justify-content: space-between;
    align-items: center;
}

.loop-items-area {
    display: flex;
    flex-direction: column;
    gap: 8px;
    flex: 1;
}

.loop-badge {
    padding: 8px 10px;
    border-radius: 8px;
    font-size: 11px;
    font-weight: 700;
    transition: all 0.25s ease;
    animation: fadeIn 0.2s ease;
}

.badge-stack { background: #8B5CF6; color: #FFFFFF; }
.badge-micro { background: #06B6D4; color: #FFFFFF; border: 1px solid #22D3EE; }
.badge-macro { background: #F59E0B; color: #FFFFFF; border: 1px solid #FBBF24; }

.loop-console {
    background: #050308;
    border: 1px solid rgba(255, 255, 255, 0.1);
    border-radius: 12px;
    padding: 12px;
    font-family: monospace;
    font-size: 11.5px;
    color: #10B981;
    height: 110px;
    overflow-y: auto;
}

.console-row {
    margin-bottom: 4px;
}

.loop-buttons-row {
    display: flex;
    gap: 8px;
    flex-wrap: wrap;
    margin-top: 16px;
}

.loop-btn {
    background: #FFFFFF;
    border: 1px solid var(--border-color, #E2E8F0);
    padding: 8px 14px;
    border-radius: 8px;
    font-size: 12px;
    font-weight: 700;
    cursor: pointer;
    transition: all 0.15s ease;
}

.loop-btn:hover {
    background: var(--purple-light, rgba(108, 76, 232, 0.08));
    border-color: var(--accent-purple, #6C4CE8);
    color: var(--accent-purple, #6C4CE8);
}

.loop-btn.btn-batch {
    background: linear-gradient(135deg, #6C4CE8, #3B82F6);
    color: #FFFFFF;
    border: none;
}

/* Micro-Tool 3: Glassmorphism */
.glass-studio-grid {
    display: grid;
    grid-template-columns: 280px 1fr 280px;
    gap: 20px;
    align-items: center;
}

.glass-controls {
    display: flex;
    flex-direction: column;
    gap: 14px;
    background: var(--bg-primary, #F8FAFC);
    padding: 18px;
    border-radius: 14px;
    border: 1px solid var(--border-color, #E2E8F0);
}

.glass-controls input[type="range"] {
    width: 100%;
    accent-color: #6C4CE8;
}

.glass-controls input[type="color"] {
    border: none;
    width: 40px;
    height: 30px;
    border-radius: 6px;
    cursor: pointer;
}

.glass-preview-stage {
    position: relative;
    background: radial-gradient(circle at center, #2E1065, #0B0810);
    border-radius: 18px;
    padding: 40px 20px;
    display: flex;
    justify-content: center;
    align-items: center;
    overflow: hidden;
    min-height: 240px;
}

.glass-preview-stage::before {
    content: '';
    position: absolute;
    width: 120px;
    height: 120px;
    background: #06B6D4;
    border-radius: 50%;
    top: 20px;
    left: 40px;
    filter: blur(20px);
}

.glass-preview-stage::after {
    content: '';
    position: absolute;
    width: 140px;
    height: 140px;
    background: #EC4899;
    border-radius: 50%;
    bottom: 20px;
    right: 40px;
    filter: blur(25px);
}

.glass-interactive-card {
    position: relative;
    z-index: 2;
    padding: 24px;
    width: 220px;
    color: #FFFFFF;
    border: 1px solid rgba(255, 255, 255, 0.2);
    text-align: center;
}

.glass-interactive-card h4 {
    margin: 0 0 6px 0;
    font-size: 16px;
}

.glass-interactive-card p {
    margin: 0;
    font-size: 11.5px;
    opacity: 0.85;
}

.glass-code-card {
    background: #0F172A;
    border-radius: 14px;
    padding: 16px;
    display: flex;
    flex-direction: column;
    gap: 10px;
}

.glass-code-card pre {
    margin: 0;
    font-family: monospace;
    font-size: 11px;
    color: #A5F3FC;
    line-height: 1.45;
    max-height: 140px;
    overflow-y: auto;
}

.btn-copy-glass {
    background: #6C4CE8;
    color: #FFFFFF;
    border: none;
    padding: 8px;
    border-radius: 8px;
    font-size: 12px;
    font-weight: 700;
    cursor: pointer;
    transition: 0.2s;
}

/* =========================================================================
   5. 3D ANIMATED FANNED ROADMAP CAROUSEL
   ========================================================================= */
.fanned-roadmap-section {
    margin-bottom: 54px;
}

/* Stage Timeline Step Selector */
.deck-timeline-nav {
    display: flex;
    justify-content: center;
    gap: 10px;
    flex-wrap: wrap;
    margin-bottom: 24px;
}

.deck-step-pill {
    background: #FFFFFF;
    border: 1.5px solid var(--border-color, #E2E8F0);
    padding: 7px 18px;
    border-radius: 999px;
    font-size: 13px;
    font-weight: 700;
    color: var(--text-secondary, #475569);
    cursor: pointer;
    display: inline-flex;
    align-items: center;
    gap: 8px;
    transition: all 0.25s cubic-bezier(0.16, 1, 0.3, 1);
    box-shadow: 0 2px 6px rgba(0, 0, 0, 0.02);
}

.deck-step-pill:hover {
    border-color: var(--accent-purple, #6C4CE8);
    transform: translateY(-2px);
    color: var(--accent-purple, #6C4CE8);
}

.deck-step-pill .step-num {
    background: rgba(108, 76, 232, 0.08);
    color: var(--accent-purple, #6C4CE8);
    padding: 2px 7px;
    border-radius: 6px;
    font-size: 11px;
    font-weight: 800;
    transition: all 0.2s ease;
}

.deck-step-pill.active {
    background: linear-gradient(135deg, #6C4CE8, #8B5CF6);
    color: #FFFFFF;
    border-color: #6C4CE8;
    box-shadow: 0 4px 16px rgba(108, 76, 232, 0.32);
    transform: translateY(-2px);
}

.deck-step-pill.active .step-num {
    background: rgba(255, 255, 255, 0.22);
    color: #FFFFFF;
}

/* 3D Arc / Fanned Deck Stage */
.fanned-deck-stage {
    position: relative;
    width: 100%;
    height: 490px;
    margin: 10px 0 26px;
    display: flex;
    align-items: center;
    justify-content: center;
    perspective: 1400px;
    -webkit-perspective: 1400px;
    background: radial-gradient(ellipse 75% 65% at 50% 50%, rgba(108, 76, 232, 0.08) 0%, rgba(14, 165, 233, 0.03) 55%, transparent 100%);
    border-radius: 36px;
    overflow: hidden;
}

/* Floating Navigation Arrows */
.deck-nav-btn {
    position: absolute;
    top: 50%;
    transform: translateY(-50%);
    z-index: 25;
    width: 48px;
    height: 48px;
    border-radius: 50%;
    background: #FFFFFF;
    border: 1.5px solid rgba(108, 76, 232, 0.3);
    color: var(--accent-purple, #6C4CE8);
    font-size: 26px;
    font-weight: 700;
    display: flex;
    align-items: center;
    justify-content: center;
    cursor: pointer;
    transition: all 0.22s cubic-bezier(0.16, 1, 0.3, 1);
    box-shadow: 0 4px 16px rgba(0, 0, 0, 0.08);
}

.deck-nav-btn.prev-btn { left: 24px; }
.deck-nav-btn.next-btn { right: 24px; }

.deck-nav-btn:hover {
    background: #6C4CE8;
    color: #FFFFFF;
    border-color: #6C4CE8;
    transform: translateY(-50%) scale(1.12);
    box-shadow: 0 8px 24px rgba(108, 76, 232, 0.35);
}

/* 3D Perspective Viewport */
.fanned-deck-viewport {
    position: relative;
    width: 100%;
    max-width: 1040px;
    height: 420px;
    display: flex;
    align-items: center;
    justify-content: center;
    transform-style: preserve-3d;
    -webkit-transform-style: preserve-3d;
}

/* Stadium / Pill Fanned Card - Razor Sharp Vector Rendering */
.fanned-card {
    position: absolute;
    width: 236px;
    height: 378px;
    background: #FFFFFF;
    border-radius: 32px;
    border: 1.5px solid rgba(203, 213, 225, 0.95);
    box-shadow: 0 10px 30px rgba(15, 23, 42, 0.08);
    display: flex;
    flex-direction: column;
    justify-content: space-between;
    padding: 24px 20px;
    text-align: center;
    cursor: pointer;
    user-select: none;
    -webkit-font-smoothing: antialiased;
    -moz-osx-font-smoothing: grayscale;
    text-rendering: optimizeLegibility;
    -webkit-backface-visibility: hidden;
    backface-visibility: hidden;
    transform-origin: center bottom;
    transition: transform 0.6s cubic-bezier(0.22, 1, 0.36, 1), opacity 0.5s ease, box-shadow 0.5s ease, border-color 0.3s ease, z-index 0s;
    will-change: transform, opacity;
}

/* Background cards hover affordance */
.fanned-card:not(.pos-active):hover {
    filter: brightness(1.02);
    border-color: var(--accent-purple, #6C4CE8);
    box-shadow: 0 16px 36px rgba(108, 76, 232, 0.18);
    cursor: pointer;
}

.fanned-card.card-html:hover { border-color: rgba(249, 115, 22, 0.6); }
.fanned-card.card-css:hover { border-color: rgba(14, 165, 233, 0.6); }
.fanned-card.card-js:hover { border-color: rgba(234, 179, 8, 0.6); }
.fanned-card.card-react:hover { border-color: rgba(6, 182, 212, 0.6); }
.fanned-card.card-practice:hover { border-color: rgba(16, 185, 129, 0.6); }

.step-name {
    font-weight: 700;
}

.drawer-actions {
    display: flex;
    align-items: center;
}

/* 3D Arc Transform States - Crisp Hardware Pixel-Aligned Rendering */
.fanned-card.pos-active {
    transform: translate3d(0, -14px, 60px) scale(1) rotateZ(0deg) rotateY(0deg);
    opacity: 1;
    z-index: 10;
    pointer-events: auto;
    border-color: #6C4CE8;
    box-shadow: 0 24px 60px rgba(108, 76, 232, 0.22), 0 4px 16px rgba(0, 0, 0, 0.06);
}

.fanned-card.pos-prev {
    transform: translate3d(-180px, 8px, 0px) scale(0.92) rotateY(15deg) rotateZ(-5deg);
    opacity: 0.94;
    z-index: 6;
    pointer-events: auto;
    box-shadow: 0 12px 30px rgba(15, 23, 42, 0.08);
}

.fanned-card.pos-next {
    transform: translate3d(180px, 8px, 0px) scale(0.92) rotateY(-15deg) rotateZ(5deg);
    opacity: 0.94;
    z-index: 6;
    pointer-events: auto;
    box-shadow: 0 12px 30px rgba(15, 23, 42, 0.08);
}

.fanned-card.pos-far-prev {
    transform: translate3d(-335px, 24px, -40px) scale(0.84) rotateY(24deg) rotateZ(-11deg);
    opacity: 0.82;
    z-index: 3;
    pointer-events: auto;
    box-shadow: 0 8px 24px rgba(15, 23, 42, 0.06);
}

.fanned-card.pos-far-next {
    transform: translate3d(335px, 24px, -40px) scale(0.84) rotateY(-24deg) rotateZ(11deg);
    opacity: 0.82;
    z-index: 3;
    pointer-events: auto;
    box-shadow: 0 8px 24px rgba(15, 23, 42, 0.06);
}

.fanned-card.pos-hidden {
    transform: translate3d(0, 60px, -150px) scale(0.7);
    opacity: 0;
    pointer-events: none;
    z-index: 0;
}

/* Card Visual Header */
.fanned-card-header {
    display: flex;
    justify-content: center;
}

.stage-time-chip {
    font-size: 11px;
    font-weight: 800;
    letter-spacing: 0.04em;
    color: var(--accent-purple, #6C4CE8);
    background: rgba(108, 76, 232, 0.08);
    padding: 4px 12px;
    border-radius: 999px;
    border: 1px solid rgba(108, 76, 232, 0.2);
}

/* Card Visual Icon Container */
.fanned-card-visual {
    margin: 12px 0;
    display: flex;
    justify-content: center;
}

.card-glyph-container {
    width: 96px;
    height: 96px;
    border-radius: 28px;
    display: flex;
    align-items: center;
    justify-content: center;
    transition: transform 0.3s cubic-bezier(0.16, 1, 0.3, 1);
}

.fanned-card:hover .card-glyph-container {
    transform: scale(1.08) rotate(3deg);
}

.glyph-html { background: linear-gradient(135deg, rgba(249, 115, 22, 0.16), rgba(249, 115, 22, 0.04)); color: #EA580C; border: 1.5px solid rgba(249, 115, 22, 0.28); }
.glyph-css { background: linear-gradient(135deg, rgba(14, 165, 233, 0.16), rgba(14, 165, 233, 0.04)); color: #0284C7; border: 1.5px solid rgba(14, 165, 233, 0.28); }
.glyph-js { background: linear-gradient(135deg, rgba(234, 179, 8, 0.2), rgba(234, 179, 8, 0.05)); color: #D97706; border: 1.5px solid rgba(234, 179, 8, 0.35); }
.glyph-react { background: linear-gradient(135deg, rgba(6, 182, 212, 0.2), rgba(6, 182, 212, 0.05)); color: #0891B2; border: 1.5px solid rgba(6, 182, 212, 0.35); }
.glyph-practice { background: linear-gradient(135deg, rgba(16, 185, 129, 0.2), rgba(16, 185, 129, 0.05)); color: #059669; border: 1.5px solid rgba(16, 185, 129, 0.35); }

/* Card Footer */
.fanned-card-footer {
    display: flex;
    flex-direction: column;
    gap: 4px;
    align-items: center;
}

.fanned-card-title {
    font-size: 16.5px;
    font-weight: 850;
    color: var(--text-primary, #0F172A);
    margin: 0;
    letter-spacing: -0.01em;
}

.fanned-card-sub {
    font-size: 11.5px;
    font-weight: 600;
    color: var(--text-secondary, #475569);
    margin: 0 0 10px 0;
}

.fanned-card-cta {
    display: inline-block;
    font-size: 12px;
    font-weight: 750;
    color: #FFFFFF;
    background: linear-gradient(135deg, #6C4CE8, #8B5CF6);
    padding: 7px 18px;
    border-radius: 999px;
    text-decoration: none;
    box-shadow: 0 3px 10px rgba(108, 76, 232, 0.25);
    transition: all 0.2s ease;
}

.fanned-card-cta:hover {
    transform: translateY(-2px);
    box-shadow: 0 6px 16px rgba(108, 76, 232, 0.4);
}

/* Active Stage Deep-Dive Detail Drawer */
.deck-active-drawer {
    background: #FFFFFF;
    border: 1.5px solid rgba(108, 76, 232, 0.2);
    border-radius: 24px;
    padding: 24px 28px;
    box-shadow: 0 8px 32px rgba(108, 76, 232, 0.08);
    transition: all 0.3s ease;
}

.drawer-header-row {
    display: flex;
    justify-content: space-between;
    align-items: center;
    gap: 24px;
    margin-bottom: 20px;
    flex-wrap: wrap;
}

.drawer-title-group {
    flex: 1;
    min-width: 280px;
}

.drawer-badge {
    font-size: 11px;
    font-weight: 800;
    letter-spacing: 0.05em;
    color: var(--accent-purple, #6C4CE8);
    background: rgba(108, 76, 232, 0.08);
    padding: 3px 10px;
    border-radius: 6px;
    display: inline-block;
    margin-bottom: 6px;
}

.drawer-title-group h3 {
    font-size: 22px;
    font-weight: 850;
    color: var(--text-primary, #0F172A);
    margin: 0 0 6px 0;
    letter-spacing: -0.02em;
}

.drawer-title-group p {
    font-size: 13.5px;
    color: var(--text-secondary, #64748B);
    margin: 0;
    line-height: 1.55;
}

.drawer-primary-btn {
    text-decoration: none;
    background: linear-gradient(135deg, #6C4CE8, #8B5CF6);
    color: #FFFFFF;
    font-size: 13.5px;
    font-weight: 750;
    padding: 12px 22px;
    border-radius: 12px;
    display: inline-flex;
    align-items: center;
    gap: 6px;
    box-shadow: 0 4px 16px rgba(108, 76, 232, 0.3);
    transition: all 0.2s ease;
    white-space: nowrap;
}

.drawer-primary-btn:hover {
    transform: translateY(-2px);
    box-shadow: 0 8px 24px rgba(108, 76, 232, 0.45);
}

.drawer-topics-grid {
    display: flex;
    flex-wrap: wrap;
    gap: 8px;
    padding-top: 16px;
    border-top: 1px solid var(--border-color, #E2E8F0);
}

.drawer-topic-chip {
    font-size: 12px;
    font-weight: 600;
    color: var(--text-primary, #1E293B);
    background: var(--bg-primary, #F8FAFC);
    border: 1px solid var(--border-color, #E2E8F0);
    padding: 5px 12px;
    border-radius: 8px;
    transition: all 0.15s ease;
}

.drawer-topic-chip:hover {
    border-color: var(--accent-purple, #6C4CE8);
    background: rgba(108, 76, 232, 0.05);
}

@media (max-width: 960px) {
    .fanned-deck-stage {
        height: 460px;
    }
    .fanned-card {
        width: 205px;
        height: 350px;
        border-radius: 28px;
    }
    .fanned-card.pos-prev { transform: translate3d(-150px, 8px, -30px) scale(0.9) rotateY(12deg) rotateZ(-4deg); }
    .fanned-card.pos-next { transform: translate3d(150px, 8px, -30px) scale(0.9) rotateY(-12deg) rotateZ(4deg); }
    .fanned-card.pos-far-prev { transform: translate3d(-275px, 20px, -70px) scale(0.8) rotateY(18deg) rotateZ(-8deg); }
    .fanned-card.pos-far-next { transform: translate3d(275px, 20px, -70px) scale(0.8) rotateY(-18deg) rotateZ(8deg); }
}

@media (max-width: 640px) {
    .fanned-deck-stage {
        height: 410px;
    }
    .fanned-card {
        width: 175px;
        height: 310px;
        padding: 16px 12px;
        border-radius: 24px;
    }
    .card-glyph-container {
        width: 72px;
        height: 72px;
    }
    .card-glyph-container svg {
        width: 46px;
        height: 46px;
    }
    .fanned-card.pos-prev { transform: translate3d(-90px, 6px, -20px) scale(0.86); opacity: 0.75; }
    .fanned-card.pos-next { transform: translate3d(90px, 6px, -20px) scale(0.86); opacity: 0.75; }
    .fanned-card.pos-far-prev, .fanned-card.pos-far-next { opacity: 0; pointer-events: none; }
}

/* =========================================================================
   6. PRACTICE LAB (8-LEVEL MATRIX)
   ========================================================================= */
.practice-matrix-grid {
    display: grid;
    grid-template-columns: repeat(4, 1fr);
    gap: 18px;
    margin-bottom: 48px;
}

.matrix-level-card {
    background: #FFFFFF;
    border: 1px solid var(--border-color, #E2E8F0);
    border-radius: 18px;
    padding: 22px;
    box-shadow: 0 2px 10px rgba(0, 0, 0, 0.03);
    display: flex;
    flex-direction: column;
    justify-content: space-between;
    transition: all 0.2s cubic-bezier(0.16, 1, 0.3, 1);
    text-decoration: none;
    color: inherit;
    position: relative;
    overflow: hidden;
}

.matrix-level-card:hover {
    transform: translateY(-4px);
    box-shadow: 0 12px 28px rgba(108, 76, 232, 0.1);
    border-color: rgba(108, 76, 232, 0.35);
}

.matrix-card-top {
    display: flex;
    justify-content: space-between;
    align-items: center;
    margin-bottom: 12px;
}

.matrix-level-badge {
    font-size: 11px;
    font-weight: 800;
    padding: 3px 8px;
    border-radius: 6px;
    background: var(--purple-light, rgba(108, 76, 232, 0.08));
    color: var(--accent-purple, #6C4CE8);
}

.matrix-difficulty {
    font-size: 10.5px;
    font-weight: 700;
    color: var(--text-muted, #94A3B8);
}

.matrix-level-card h4 {
    margin: 0 0 6px 0;
    font-size: 15.5px;
    font-weight: 750;
    color: var(--text-primary, #0F172A);
}

.matrix-level-card p {
    margin: 0 0 12px 0;
    font-size: 12.5px;
    color: var(--text-secondary, #64748B);
    line-height: 1.5;
}

.matrix-tags {
    display: flex;
    gap: 4px;
    flex-wrap: wrap;
    margin-bottom: 14px;
}

.matrix-tag {
    font-size: 10.5px;
    font-weight: 600;
    padding: 2px 7px;
    border-radius: 4px;
    background: var(--bg-primary, #F8FAFC);
    color: var(--text-muted, #64748B);
    border: 1px solid var(--border-color, #E2E8F0);
}

.matrix-card-action {
    font-size: 12.5px;
    font-weight: 700;
    color: var(--accent-purple, #6C4CE8);
    display: flex;
    align-items: center;
    gap: 4px;
}

/* =========================================================================
   7. MACHINE CODING LABS SHOWCASE
   ========================================================================= */
.projects-showcase-grid {
    display: grid;
    grid-template-columns: repeat(3, 1fr);
    gap: 20px;
    margin-bottom: 48px;
    --proj-progress: 0;
}

.project-showcase-card {
    background: #FFFFFF;
    border: 1px solid var(--border-color, #E2E8F0);
    border-radius: 18px;
    padding: 24px;
    box-shadow: 0 2px 10px rgba(0, 0, 0, 0.03);
    display: flex;
    flex-direction: column;
    justify-content: space-between;
    opacity: var(--proj-opacity, 0);
    transform: translate3d(var(--proj-tx, 0px), var(--proj-ty, 0px), 0);
    will-change: transform, opacity;
    transition: box-shadow 0.25s cubic-bezier(0.16, 1, 0.3, 1),
                border-color 0.25s ease;
    text-decoration: none;
    color: inherit;
}

/* Card 1: Slide in from left */
.project-showcase-card.p-shape {
    --proj-tx: calc((1 - var(--proj-progress, 0)) * -64px);
    --proj-ty: calc((1 - var(--proj-progress, 0)) * 20px);
    --proj-opacity: calc(var(--proj-progress, 0) * 1.35);
}

/* Card 2: Slide in from bottom center */
.project-showcase-card.p-debounce {
    --proj-tx: 0px;
    --proj-ty: calc((1 - var(--proj-progress, 0)) * 36px);
    --proj-opacity: calc(var(--proj-progress, 0) * 1.35);
}

/* Card 3: Slide in from right */
.project-showcase-card.p-kanban {
    --proj-tx: calc((1 - var(--proj-progress, 0)) * 64px);
    --proj-ty: calc((1 - var(--proj-progress, 0)) * 20px);
    --proj-opacity: calc(var(--proj-progress, 0) * 1.35);
}

/* When fully in front */
.projects-showcase-grid.in-view .project-showcase-card,
.project-showcase-card.in-view {
    --proj-progress: 1;
    --proj-tx: 0px;
    --proj-ty: 0px;
    --proj-opacity: 1;
}

.project-showcase-card:hover {
    transform: translate3d(var(--proj-tx, 0px), calc(var(--proj-ty, 0px) - 6px), 0);
    box-shadow: 0 14px 32px rgba(108, 76, 232, 0.12);
    border-color: rgba(108, 76, 232, 0.35);
}

@media (prefers-reduced-motion: reduce) {
    .project-showcase-card {
        opacity: 1 !important;
        transform: none !important;
        transition: none !important;
    }
}

.project-icon-box {
    width: 48px;
    height: 48px;
    border-radius: 12px;
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: 24px;
    margin-bottom: 14px;
}

.p-shape .project-icon-box { background: #EDE9FE; border: 1px solid #DDD6FE; }
.p-debounce .project-icon-box { background: #E0F2FE; border: 1px solid #BAE6FD; }
.p-kanban .project-icon-box { background: #ECFDF5; border: 1px solid #A7F3D0; }

.project-showcase-card h4 {
    margin: 0 0 6px 0;
    font-size: 17px;
    font-weight: 750;
    color: var(--text-primary, #0F172A);
}

.project-showcase-card p {
    margin: 0 0 16px 0;
    font-size: 13.5px;
    color: var(--text-secondary, #64748B);
    line-height: 1.55;
}

.project-features-list {
    display: flex;
    gap: 6px;
    flex-wrap: wrap;
    margin-bottom: 16px;
}

.project-feat-chip {
    font-size: 11px;
    font-weight: 600;
    padding: 3px 8px;
    border-radius: 6px;
    background: var(--bg-primary, #F8FAFC);
    color: var(--text-secondary, #475569);
    border: 1px solid var(--border-color, #E2E8F0);
}

.project-launch-link {
    font-size: 13.5px;
    font-weight: 700;
    color: var(--accent-purple, #6C4CE8);
    display: flex;
    align-items: center;
    gap: 4px;
}

/* =========================================================================
   8. WHY LEARN ON CODE WITHIN (BENTO HIGHLIGHTS)
   ========================================================================= */
.why-learn-section {
    margin-bottom: 56px;
}

.why-bento-grid {
    display: grid;
    grid-template-columns: repeat(3, 1fr);
    gap: 20px;
    margin-bottom: 10px;
    --bento-progress: 0;
}

.why-bento-card {
    background: #FFFFFF;
    border: 1.5px solid rgba(226, 232, 240, 0.95);
    border-radius: 24px;
    padding: 28px;
    box-shadow: 0 4px 20px rgba(0, 0, 0, 0.03);
    display: flex;
    flex-direction: column;
    justify-content: space-between;
    opacity: var(--bento-opacity, 0);
    transform: translate3d(var(--bento-tx, 0px), var(--bento-ty, 0px), 0);
    will-change: transform, opacity;
    transition: box-shadow 0.25s cubic-bezier(0.16, 1, 0.3, 1),
                border-color 0.25s ease;
}

/* Left-column cards slide inward from left as user scrolls down */
.why-bento-card.bento-hero-left,
.why-bento-card.bento-tall:nth-child(3) {
    --bento-tx: calc((1 - var(--bento-progress, 0)) * -64px);
    --bento-ty: calc((1 - var(--bento-progress, 0)) * 20px);
    --bento-opacity: calc(var(--bento-progress, 0) * 1.35);
}

/* Right-column cards slide inward from right as user scrolls down */
.why-bento-card.bento-tall:nth-child(2),
.why-bento-card.bento-hero-right {
    --bento-tx: calc((1 - var(--bento-progress, 0)) * 64px);
    --bento-ty: calc((1 - var(--bento-progress, 0)) * 20px);
    --bento-opacity: calc(var(--bento-progress, 0) * 1.35);
}

.why-bento-card.bento-hero-left,
.why-bento-card.bento-hero-right {
    grid-column: span 2;
}

.why-bento-card.bento-tall {
    grid-column: span 1;
}

/* When fully in front */
.why-bento-grid.in-view .why-bento-card,
.why-bento-card.in-view {
    --bento-progress: 1;
    --bento-tx: 0px;
    --bento-ty: 0px;
    --bento-opacity: 1;
}

.why-bento-card:hover {
    transform: translate3d(var(--bento-tx, 0px), calc(var(--bento-ty, 0px) - 4px), 0);
    box-shadow: 0 16px 36px rgba(108, 76, 232, 0.12);
    border-color: rgba(108, 76, 232, 0.35);
}

@media (prefers-reduced-motion: reduce) {
    .why-bento-card {
        opacity: 1 !important;
        transform: none !important;
        transition: none !important;
    }
}

.why-card-top {
    display: flex;
    justify-content: space-between;
    align-items: center;
    margin-bottom: 18px;
}

.why-icon-badge {
    width: 48px;
    height: 48px;
    border-radius: 14px;
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: 24px;
}

.why-icon-badge.icon-purple { background: rgba(108, 76, 232, 0.1); border: 1px solid rgba(108, 76, 232, 0.2); }
.why-icon-badge.icon-cyan { background: rgba(14, 165, 233, 0.1); border: 1px solid rgba(14, 165, 233, 0.2); }
.why-icon-badge.icon-amber { background: rgba(245, 158, 11, 0.1); border: 1px solid rgba(245, 158, 11, 0.2); }
.why-icon-badge.icon-emerald { background: rgba(16, 185, 129, 0.1); border: 1px solid rgba(16, 185, 129, 0.2); }

.why-pill-badge {
    font-size: 11px;
    font-weight: 750;
    color: var(--accent-purple, #6C4CE8);
    background: rgba(108, 76, 232, 0.08);
    padding: 4px 10px;
    border-radius: 999px;
}

.why-card-body h3 {
    font-size: 19px;
    font-weight: 800;
    color: var(--text-primary, #0F172A);
    margin: 0 0 8px 0;
    letter-spacing: -0.01em;
}

.why-card-body p {
    font-size: 13.5px;
    color: var(--text-secondary, #64748B);
    line-height: 1.6;
    margin: 0;
}

.why-card-footer-metrics {
    display: flex;
    gap: 24px;
    margin-top: 20px;
    padding-top: 16px;
    border-top: 1px solid var(--border-color, #E2E8F0);
}

.why-metric-item strong {
    display: block;
    font-size: 20px;
    font-weight: 850;
    color: var(--accent-purple, #6C4CE8);
}

.why-metric-item span {
    font-size: 11px;
    font-weight: 600;
    color: var(--text-muted, #94A3B8);
}

.why-tag-strip {
    display: flex;
    gap: 6px;
    flex-wrap: wrap;
    margin-top: 18px;
}

.w-tag {
    font-size: 11px;
    font-weight: 600;
    background: var(--bg-primary, #F8FAFC);
    border: 1px solid var(--border-color, #E2E8F0);
    padding: 3px 8px;
    border-radius: 6px;
    color: var(--text-secondary, #475569);
}

/* =========================================================================
   9. ABOUT THE CREATOR PROFILE HERO BANNER (EDITORIAL SHOWCASE)
   ========================================================================= */
.about-creator-section {
    margin-bottom: 60px;
    position: relative;
}

.creator-hero-card {
    background: linear-gradient(135deg, #FFFFFF 0%, #FAF5FF 30%, #F0F9FF 70%, #F0FDF4 100%);
    border: 1.5px solid rgba(108, 76, 232, 0.22);
    border-radius: 36px;
    padding: 48px 52px 0 52px;
    box-shadow: 0 24px 70px rgba(108, 76, 232, 0.1), 0 2px 6px rgba(0, 0, 0, 0.03);
    display: grid;
    grid-template-columns: 1.25fr 0.95fr;
    gap: 40px;
    align-items: flex-end;
    position: relative;
    overflow: hidden;
}

.creator-hero-card::before {
    content: '';
    position: absolute;
    top: -80px;
    right: -80px;
    width: 320px;
    height: 320px;
    border-radius: 50%;
    background: radial-gradient(circle, rgba(217, 70, 239, 0.18) 0%, rgba(108, 76, 232, 0.1) 45%, transparent 70%);
    pointer-events: none;
    z-index: 1;
}

.creator-hero-card::after {
    content: '';
    position: absolute;
    bottom: -80px;
    left: 20%;
    width: 300px;
    height: 300px;
    border-radius: 50%;
    background: radial-gradient(circle, rgba(14, 165, 233, 0.14) 0%, rgba(16, 185, 129, 0.08) 50%, transparent 70%);
    pointer-events: none;
    z-index: 1;
}

/* Left: Editorial Content */
.creator-hero-text {
    display: flex;
    flex-direction: column;
    padding-bottom: 48px;
    position: relative;
    z-index: 2;
}

.creator-role-badge {
    display: inline-flex;
    align-items: center;
    gap: 8px;
    background: rgba(255, 255, 255, 0.9);
    border: 1px solid rgba(108, 76, 232, 0.25);
    padding: 6px 14px;
    border-radius: 999px;
    font-size: 11.5px;
    font-weight: 800;
    color: var(--accent-purple, #6C4CE8);
    width: fit-content;
    margin-bottom: 18px;
    box-shadow: 0 2px 8px rgba(108, 76, 232, 0.06);
    letter-spacing: 0.02em;
}

.badge-dot {
    width: 8px;
    height: 8px;
    border-radius: 50%;
    background: #10B981;
}

.creator-hero-headline {
    font-size: 38px;
    font-weight: 900;
    line-height: 1.15;
    letter-spacing: -0.035em;
    color: #0F172A;
    margin: 0 0 16px 0;
}

.headline-gradient {
    background: linear-gradient(135deg, #6C4CE8 0%, #D946EF 45%, #0EA5E9 100%);
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
    background-clip: text;
}

.creator-hero-desc {
    font-size: 15px;
    line-height: 1.65;
    color: #475569;
    margin: 0 0 22px 0;
    font-weight: 450;
    max-width: 580px;
}

.creator-hero-desc strong {
    color: #0F172A;
    font-weight: 750;
}

.creator-hero-pills {
    display: flex;
    gap: 10px;
    flex-wrap: wrap;
    margin-bottom: 28px;
}

.hero-pill {
    background: rgba(255, 255, 255, 0.85);
    border: 1px solid rgba(108, 76, 232, 0.15);
    padding: 5px 12px;
    border-radius: 8px;
    font-size: 12px;
    font-weight: 700;
    color: #334155;
    box-shadow: 0 1px 3px rgba(0, 0, 0, 0.02);
}

.creator-hero-actions {
    display: flex;
    align-items: center;
    gap: 18px;
    flex-wrap: wrap;
}

.creator-btn-primary {
    background: #0F172A;
    color: #FFFFFF;
    text-decoration: none;
    font-size: 13.5px;
    font-weight: 750;
    padding: 12px 24px;
    border-radius: 12px;
    display: inline-flex;
    align-items: center;
    gap: 8px;
    box-shadow: 0 4px 16px rgba(15, 23, 42, 0.25), 0 0 0 1px rgba(108, 76, 232, 0.2);
    transition: all 0.2s cubic-bezier(0.16, 1, 0.3, 1);
}

.creator-btn-primary:hover {
    background: #1E293B;
    transform: translateY(-2px);
    box-shadow: 0 8px 24px rgba(108, 76, 232, 0.35);
}

.creator-link-arrow {
    display: inline-flex;
    align-items: center;
    gap: 6px;
    text-decoration: none;
    font-size: 14px;
    font-weight: 750;
    color: #0F172A;
    transition: all 0.2s ease;
}

.creator-link-arrow .arrow-svg {
    transition: transform 0.2s ease;
    font-weight: 800;
}

.creator-link-arrow:hover {
    color: #6C4CE8;
}

.creator-link-arrow:hover .arrow-svg {
    transform: translateX(4px);
}

.creator-link-secondary {
    text-decoration: none;
    font-size: 13.5px;
    font-weight: 650;
    color: #64748B;
    transition: color 0.15s ease;
}

.creator-link-secondary:hover {
    color: #0F172A;
}

/* Right: Visual Cutout Stage */
.creator-hero-visual {
    position: relative;
    display: flex;
    align-items: flex-end;
    justify-content: center;
    height: 100%;
    min-height: 380px;
    z-index: 2;
}

.visual-ambient-orb {
    position: absolute;
    width: 320px;
    height: 320px;
    border-radius: 50%;
    background: radial-gradient(circle, rgba(108, 76, 232, 0.35) 0%, rgba(217, 70, 239, 0.2) 40%, rgba(14, 165, 233, 0.1) 70%, transparent 80%);
    filter: blur(32px);
    bottom: 20px;
    left: 50%;
    transform: translateX(-50%);
    pointer-events: none;
    z-index: 1;
}

.creator-popout-img {
    height: 420px;
    max-height: 440px;
    width: auto;
    max-width: 100%;
    object-fit: contain;
    position: relative;
    z-index: 2;
    filter: drop-shadow(0 20px 40px rgba(15, 23, 42, 0.22));
    transition: transform 0.35s cubic-bezier(0.16, 1, 0.3, 1), filter 0.35s ease;
    display: block;
    margin-bottom: 0;
    -webkit-mask-image: linear-gradient(to bottom, black 78%, rgba(0, 0, 0, 0.8) 88%, transparent 100%);
    mask-image: linear-gradient(to bottom, black 78%, rgba(0, 0, 0, 0.8) 88%, transparent 100%);
}

.btn-icon {
    font-size: 15px;
    display: inline-block;
}

.creator-avatar-fallback {
    width: 200px;
    height: 260px;
    border-radius: 28px;
    background: linear-gradient(135deg, #1E1B4B, #0F172A);
    display: flex;
    flex-direction: column;
    align-items: center;
    justify-content: center;
    color: #FFFFFF;
    position: relative;
    z-index: 2;
    margin-bottom: 20px;
}

.fallback-initials {
    font-size: 46px;
    font-weight: 900;
    letter-spacing: -1px;
    background: linear-gradient(135deg, #A855F7, #38BDF8);
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
    background-clip: text;
}

.fallback-icon {
    font-size: 20px;
    margin-top: 4px;
}

/* =========================================================================
   10. FOOTER
   ========================================================================= */
.home-footer {
    text-align: center;
    padding: 44px 24px;
    background: linear-gradient(180deg, #16121D 0%, #0A0710 100%);
    border: 1px solid #231C2D;
    border-radius: 24px;
    margin-top: 36px;
    box-shadow: 0 16px 40px rgba(10, 7, 16, 0.28);
    position: relative;
    overflow: hidden;
}

.home-footer::before {
    content: '';
    position: absolute;
    top: 0;
    left: 50%;
    transform: translateX(-50%);
    width: 320px;
    height: 2px;
    background: linear-gradient(90deg, transparent, #A855F7 30%, #38BDF8 70%, transparent);
    opacity: 0.9;
}

.home-footer .footer-brand {
    font-size: 20px;
    font-weight: 850;
    background: linear-gradient(135deg, #E9D5FF 0%, #C084FC 50%, #38BDF8 100%);
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
    background-clip: text;
    margin-bottom: 8px;
    letter-spacing: -0.02em;
    display: inline-block;
}

.home-footer p {
    font-size: 13.5px;
    color: #94A3B8;
    margin: 0;
    font-weight: 500;
    letter-spacing: 0.01em;
}

/* =========================================================================
   RESPONSIVE DESIGN
   ========================================================================= */
@media (max-width: 1040px) {
    .home-hero-split { grid-template-columns: 1fr; padding: 36px 28px; }
    .flex-studio-grid, .glass-studio-grid { grid-template-columns: 1fr; }
    .tracks-grid { grid-template-columns: 1fr; }
    .practice-matrix-grid { grid-template-columns: repeat(2, 1fr); }
    .projects-showcase-grid { grid-template-columns: 1fr; }
    .features-grid { grid-template-columns: repeat(2, 1fr); }
    .event-loop-grid { grid-template-columns: repeat(2, 1fr); }
}

@media (max-width: 640px) {
    .home-hero-split { padding: 28px 18px; }
    .hero-title { font-size: 30px; }
    .progress-resume-strip { grid-template-columns: 1fr; }
    .practice-matrix-grid { grid-template-columns: 1fr; }
    .features-grid { grid-template-columns: 1fr; }
    .event-loop-grid { grid-template-columns: 1fr; }
    .concept-studio-section { padding: 20px 16px; }
}

/* =========================================================================
   DARK THEME SYNERGY
   ========================================================================= */
[data-theme="dark"] .home-hero-split {
    background: linear-gradient(135deg, #180C22 0%, #0F0916 50%, #0B0810 100%);
    border-color: #3A163A;
    box-shadow: 0 10px 40px rgba(0, 0, 0, 0.4);
}

[data-theme="dark"] .hero-status-pill {
    background: rgba(26, 10, 28, 0.9);
    border-color: #3A163A;
    color: #D946EF;
}

[data-theme="dark"] .hero-stat-badge {
    background: #120B14;
    border-color: #3A163A;
    color: #CBD5E1;
}

[data-theme="dark"] .hero-btn-secondary {
    background: #120B14;
    border-color: #3A163A;
    color: #D946EF;
}

[data-theme="dark"] .search-input-card {
    background: #120B14;
    border-color: #3A163A;
}

[data-theme="dark"] .home-search-input {
    color: #FFFFFF;
}

[data-theme="dark"] .search-shortcut-hint {
    background: #1A0A1C;
    border-color: #3A163A;
    color: #918A96;
}

[data-theme="dark"] .search-filter-chip {
    background: #1A0A1C;
    border-color: #3A163A;
    color: #918A96;
}

[data-theme="dark"] .search-filter-chip:hover, [data-theme="dark"] .search-filter-chip.active {
    background: #D946EF;
    border-color: #D946EF;
    color: #FFFFFF;
}

[data-theme="dark"] .search-results-dropdown {
    background: #120B14;
    border-color: #3A163A;
}

[data-theme="dark"] .search-item:hover, [data-theme="dark"] .search-item.selected {
    background: #1F0E24;
}

[data-theme="dark"] .progress-card, 
[data-theme="dark"] .resume-card, 
[data-theme="dark"] .concept-studio-section, 
[data-theme="dark"] .track-card,
[data-theme="dark"] .matrix-level-card, 
[data-theme="dark"] .project-showcase-card,
[data-theme="dark"] .feature-card {
    background: #0D090F;
    border-color: #3A163A;
}

[data-theme="dark"] .progress-bar-container,
[data-theme="dark"] .progress-mini .mini-bar {
    background: #1E0D1E;
}

[data-theme="dark"] .progress-bar-fill,
[data-theme="dark"] .progress-mini .mini-fill {
    background: linear-gradient(90deg, #D946EF, #A855F7);
}

[data-theme="dark"] .concept-nav-tabs, 
[data-theme="dark"] .flex-controls-panel, 
[data-theme="dark"] .glass-controls {
    background: #120B14;
    border-color: #3A163A;
}

[data-theme="dark"] .control-group label {
    color: #94A3B8;
}

[data-theme="dark"] .control-group select {
    background-color: #1A0F22 !important;
    border: 1.5px solid #4A1D4A !important;
    color: #F8FAFC !important;
    box-shadow: 0 2px 8px rgba(0, 0, 0, 0.4);
}

[data-theme="dark"] .control-group select:hover {
    border-color: #9333EA !important;
}

[data-theme="dark"] .control-group select:focus {
    border-color: #D946EF !important;
    box-shadow: 0 0 0 3px rgba(217, 70, 239, 0.25) !important;
}

[data-theme="dark"] .control-group select option {
    background-color: #1A0F22 !important;
    color: #F8FAFC !important;
}

[data-theme="dark"] .glass-controls label {
    color: #94A3B8;
}

[data-theme="dark"] .glass-controls input[type="range"] {
    accent-color: #D946EF;
}

[data-theme="dark"] .glass-controls input[type="color"] {
    background-color: #1A0F22;
    border: 1px solid #3A163A;
}

[data-theme="dark"] .btn-copy-glass {
    background: #1A0A1C;
    border: 1px solid #3A163A;
    color: #CBD5E1;
}

[data-theme="dark"] .btn-copy-glass:hover {
    background: #250E28;
    color: #D946EF;
    border-color: #D946EF;
}

[data-theme="dark"] .roadmap-filter-btn {
    background: #120B14;
    border-color: #3A163A;
    color: #918A96;
}

[data-theme="dark"] .roadmap-filter-btn.active {
    background: #D946EF;
    border-color: #D946EF;
    color: #FFFFFF;
}

[data-theme="dark"] .matrix-tag, 
[data-theme="dark"] .project-feat-chip,
[data-theme="dark"] .topic-chip {
    background: #180D1C;
    border-color: #3A163A;
    color: #918A96;
}

[data-theme="dark"] .matrix-level-badge,
[data-theme="dark"] .section-label {
    background: #1A0A1C;
    border-color: #3A163A;
    color: #D946EF;
}

[data-theme="dark"] .loop-btn {
    background: #1A0A1C;
    border-color: #3A163A;
    color: #CBD5E1;
}

[data-theme="dark"] .loop-btn:hover {
    background: #250E28;
    color: #D946EF;
    border-color: #D946EF;
}

[data-theme="dark"] .track-html .track-icon-box { background: linear-gradient(135deg, #1A0D05, #1A0D05); border-color: #4A2000; }
[data-theme="dark"] .track-css .track-icon-box { background: linear-gradient(135deg, #051520, #051520); border-color: #0A3050; }
[data-theme="dark"] .track-js .track-icon-box { background: linear-gradient(135deg, #1A1000, #1A1000); border-color: #3A2800; }
[data-theme="dark"] .track-react .track-icon-box { background: linear-gradient(135deg, #051A18, #051A18); border-color: #0D3530; }

[data-theme="dark"] .track-html .track-chapter-badge { background: #1A0D05; color: #FB923C; border-color: #4A2000; }
[data-theme="dark"] .track-css .track-chapter-badge { background: #051520; color: #38BDF8; border-color: #0A3050; }
[data-theme="dark"] .track-js .track-chapter-badge { background: #1A1000; color: #FBBF24; border-color: #3A2800; }
[data-theme="dark"] .track-react .track-chapter-badge { background: #051A18; color: #22D3EE; border-color: #0D3530; }

[data-theme="dark"] .feature-card:nth-child(1) .feature-icon { background: linear-gradient(135deg, #1A0A1C, #250E28); }
[data-theme="dark"] .feature-card:nth-child(2) .feature-icon { background: linear-gradient(135deg, #0C1820, #0A2030); }
[data-theme="dark"] .feature-card:nth-child(3) .feature-icon { background: linear-gradient(135deg, #051A10, #082818); }
[data-theme="dark"] .feature-card:nth-child(4) .feature-icon { background: linear-gradient(135deg, #1A1000, #281800); }

/* =========================================================================
   DIAGNOSTIC DRILL & OUTPUT ARENA
   ========================================================================= */
.diagnostic-arena-grid {
    display: grid;
    grid-template-columns: 1.15fr 1fr;
    gap: 24px;
    margin-bottom: 48px;
}

.arena-card {
    background: #FFFFFF;
    border: 1px solid var(--border-color, #E2E8F0);
    border-radius: 20px;
    padding: 26px 28px;
    box-shadow: 0 4px 20px rgba(0, 0, 0, 0.04);
    display: flex;
    flex-direction: column;
    justify-content: flex-start;
    gap: 14px;
    min-height: 460px;
    position: relative;
    overflow: hidden;
}

.predictor-card {
    border-top: 3px solid #8B5CF6;
}

.utility-card {
    border-top: 3px solid #0EA5E9;
}

.arena-card-header {
    display: flex;
    justify-content: space-between;
    align-items: flex-start;
    margin-bottom: 4px;
}

.arena-card-header h3 {
    margin: 0;
    font-size: 17px;
    font-weight: 750;
    color: var(--text-primary, #0F172A);
}

.arena-chip {
    font-size: 11px;
    font-weight: 800;
    padding: 3px 8px;
    border-radius: 6px;
    text-transform: uppercase;
    letter-spacing: 0.05em;
    display: inline-block;
    margin-bottom: 6px;
}

.chip-predictor {
    background: #EDE9FE;
    color: #6C4CE8;
    border: 1px solid #DDD6FE;
}

.chip-vault {
    background: #E0F2FE;
    color: #0284C7;
    border: 1px solid #BAE6FD;
}

.drill-streak-badge {
    background: #FFFBEB;
    border: 1px solid #FDE68A;
    color: #B45309;
    font-size: 12px;
    font-weight: 800;
    padding: 4px 10px;
    border-radius: 999px;
}

.code-riddle-container {
    background: #0B0810;
    border-radius: 12px;
    padding: 14px 16px;
    margin-bottom: 18px;
    border: 1px solid rgba(255, 255, 255, 0.1);
}

.code-snippet-box {
    margin: 0;
    font-family: 'Consolas', 'Fira Code', monospace;
    font-size: 12.5px;
    color: #38BDF8;
    line-height: 1.5;
    white-space: pre-wrap;
}

.quiz-options-list {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 10px;
    margin-bottom: 16px;
}

.quiz-option-btn {
    background: #FFFFFF;
    border: 1.5px solid var(--border-color, #E2E8F0);
    padding: 10px 14px;
    border-radius: 10px;
    font-size: 13px;
    font-weight: 600;
    color: var(--text-primary, #0F172A);
    display: flex;
    align-items: center;
    gap: 10px;
    cursor: pointer;
    transition: all 0.15s ease;
    text-align: left;
}

.quiz-option-btn:hover:not(:disabled) {
    background: var(--purple-light, rgba(108, 76, 232, 0.08));
    border-color: var(--accent-purple, #6C4CE8);
    transform: translateY(-1px);
}

.quiz-option-btn.correct {
    background: #ECFDF5 !important;
    border-color: #10B981 !important;
    color: #065F46 !important;
    font-weight: 700;
}

.quiz-option-btn.wrong {
    background: #FEF2F2 !important;
    border-color: #EF4444 !important;
    color: #991B1B !important;
}

.opt-key {
    width: 22px;
    height: 22px;
    border-radius: 6px;
    background: rgba(0, 0, 0, 0.06);
    display: inline-flex;
    align-items: center;
    justify-content: center;
    font-weight: 800;
    font-size: 11px;
    flex-shrink: 0;
}

.drill-feedback-box {
    border-radius: 12px;
    padding: 14px 16px;
    margin-bottom: 16px;
    font-size: 13px;
    line-height: 1.55;
    animation: fadeIn 0.25s ease;
}

.drill-feedback-box.correct-bg {
    background: #F0FDF4;
    border: 1px solid #BBF7D0;
    color: #166534;
}

.drill-feedback-box.wrong-bg {
    background: #FEF2F2;
    border: 1px solid #FECACA;
    color: #991B1B;
}

.feedback-badge {
    font-weight: 800;
    font-size: 12px;
    margin-bottom: 6px;
}

.arena-card-footer {
    display: flex;
    justify-content: space-between;
    align-items: center;
    padding-top: 14px;
    border-top: 1px solid var(--border-subtle, #F1F5F9);
}

.arena-hint {
    font-size: 11.5px;
    color: var(--text-muted, #94A3B8);
    font-weight: 500;
}

.arena-footer-actions {
    display: flex;
    gap: 8px;
    align-items: center;
}

.arena-btn-reveal {
    background: #FFFFFF;
    color: var(--accent-purple, #6C4CE8);
    border: 1.5px solid rgba(108, 76, 232, 0.3);
    padding: 7px 14px;
    border-radius: 8px;
    font-size: 12px;
    font-weight: 700;
    cursor: pointer;
    transition: all 0.15s ease;
}

.arena-btn-reveal:hover {
    background: var(--purple-light, rgba(108, 76, 232, 0.08));
    border-color: var(--accent-purple, #6C4CE8);
    transform: translateY(-1px);
}

.arena-btn-next {
    background: linear-gradient(135deg, #6C4CE8, #8B5CF6);
    color: #FFFFFF;
    border: none;
    padding: 8px 16px;
    border-radius: 8px;
    font-size: 12.5px;
    font-weight: 700;
    cursor: pointer;
    transition: all 0.2s ease;
}

.arena-btn-next:hover {
    transform: translateY(-2px);
    box-shadow: 0 4px 12px rgba(108, 76, 232, 0.35);
}

/* Arena Subtabs */
.arena-subtabs {
    display: flex;
    gap: 4px;
    background: var(--bg-primary, #F8FAFC);
    padding: 3px;
    border-radius: 8px;
    border: 1px solid var(--border-color, #E2E8F0);
}

.arena-subtab-btn {
    background: transparent;
    border: none;
    font-size: 11.5px;
    font-weight: 700;
    color: var(--text-secondary, #64748B);
    padding: 4px 10px;
    border-radius: 6px;
    cursor: pointer;
    transition: 0.15s;
}

.arena-subtab-btn.active {
    background: #6C4CE8;
    color: #FFFFFF;
}

.arena-subtab-pane {
    display: none;
    flex: 1;
}

.arena-subtab-pane.active {
    display: flex;
    flex-direction: column;
    animation: fadeIn 0.2s ease;
}

/* Bug Hunter */
.bug-instruction {
    font-size: 13.5px;
    color: var(--text-secondary, #64748B);
    margin: 0 0 10px 0;
    font-weight: 600;
}

.bug-code-block {
    background: #0B0810;
    border-radius: 12px;
    padding: 12px 14px;
    font-family: 'Consolas', monospace;
    font-size: 12.5px;
    border: 1px solid rgba(255, 255, 255, 0.1);
    margin: 0 0 12px 0;
}

.bug-line {
    display: flex;
    gap: 12px;
    padding: 6px 10px;
    border-radius: 6px;
    cursor: pointer;
    transition: all 0.15s ease;
    color: #E2E8F0;
    align-items: center;
}

.bug-line:hover {
    background: rgba(255, 255, 255, 0.08);
}

.bug-line.selected-bug {
    background: rgba(16, 185, 129, 0.2) !important;
    border: 1px solid #10B981;
}

.bug-line.selected-clean {
    background: rgba(239, 68, 68, 0.15) !important;
    border: 1px solid #EF4444;
}

.line-num {
    color: #64748B;
    user-select: none;
    font-size: 11px;
    width: 14px;
}

.bug-reveal-drawer {
    background: var(--bg-primary, #F8FAFC);
    border: 1px solid var(--border-color, #E2E8F0);
    border-radius: 12px;
    padding: 14px 16px;
    font-size: 13px;
    line-height: 1.55;
    animation: fadeIn 0.25s ease;
    margin-top: 0;
    box-shadow: 0 2px 8px rgba(0, 0, 0, 0.04);
}

.bug-feedback.correct {
    color: #065F46;
}

.bug-feedback.wrong {
    color: #991B1B;
}

.bug-fix-snippet {
    margin-top: 8px;
    padding: 8px 12px;
    background: #0B0810;
    border-radius: 6px;
    font-family: monospace;
    color: #38BDF8;
}

/* Formulas */
.formulas-list {
    display: flex;
    flex-direction: column;
    gap: 8px;
}

.formula-item {
    background: var(--bg-primary, #F8FAFC);
    border: 1px solid var(--border-color, #E2E8F0);
    border-radius: 10px;
    padding: 10px 14px;
    display: flex;
    justify-content: space-between;
    align-items: center;
}

.formula-info strong {
    display: block;
    font-size: 13px;
    color: var(--text-primary, #0F172A);
}

.formula-info span {
    font-size: 11px;
    color: var(--text-muted, #94A3B8);
}

.copy-formula-btn {
    background: #FFFFFF;
    border: 1px solid var(--border-color, #E2E8F0);
    padding: 5px 12px;
    border-radius: 6px;
    font-size: 11.5px;
    font-weight: 750;
    color: var(--accent-purple, #6C4CE8);
    cursor: pointer;
    transition: 0.15s;
}

.copy-formula-btn:hover {
    background: var(--purple-light, rgba(108, 76, 232, 0.08));
    border-color: var(--accent-purple, #6C4CE8);
}

/* =========================================================================
   DARK THEME OVERRIDES FOR ARENA
   ========================================================================= */
[data-theme="dark"] .arena-card {
    background: #0D090F;
    border-color: #3A163A;
}

[data-theme="dark"] .chip-predictor {
    background: #1A0A1C;
    border-color: #3A163A;
    color: #D946EF;
}

[data-theme="dark"] .chip-vault {
    background: #051520;
    border-color: #0A3050;
    color: #38BDF8;
}

[data-theme="dark"] .drill-streak-badge {
    background: #1A1000;
    border-color: #3A2800;
    color: #FBBF24;
}

[data-theme="dark"] .quiz-option-btn {
    background: #120B14;
    border-color: #3A163A;
    color: #E2E8F0;
}

[data-theme="dark"] .quiz-option-btn:hover:not(:disabled) {
    background: #1F0E24;
    border-color: #D946EF;
}

[data-theme="dark"] .opt-key {
    background: rgba(255, 255, 255, 0.08);
}

[data-theme="dark"] .arena-subtabs {
    background: #120B14;
    border-color: #3A163A;
}

[data-theme="dark"] .arena-subtab-btn.active {
    background: #D946EF;
}

[data-theme="dark"] .formula-item,
[data-theme="dark"] .bug-reveal-drawer {
    background: #120B14;
    border-color: #3A163A;
}

[data-theme="dark"] .copy-formula-btn {
    background: #1A0A1C;
    border-color: #3A163A;
    color: #D946EF;
}

[data-theme="dark"] .arena-btn-reveal {
    background: #1A0A1C;
    border-color: #3A163A;
    color: #D946EF;
}

[data-theme="dark"] .arena-btn-reveal:hover {
    background: #250E28;
}

[data-theme="dark"] .arena-card-footer {
    border-color: #1E0D1E;
}

/* Fanned Roadmap Dark Theme Overrides */
[data-theme="dark"] .fanned-deck-stage {
    background: radial-gradient(ellipse 75% 65% at 50% 50%, rgba(217, 70, 239, 0.08) 0%, rgba(56, 189, 248, 0.04) 55%, transparent 100%);
}

[data-theme="dark"] .deck-step-pill {
    background: #110B17;
    border-color: #3A163A;
    color: #94A3B8;
}

[data-theme="dark"] .deck-step-pill .step-num {
    background: rgba(217, 70, 239, 0.15);
    color: #D946EF;
}

[data-theme="dark"] .deck-step-pill.active {
    background: linear-gradient(135deg, #A855F7, #6C4CE8);
    color: #FFFFFF;
    border-color: #A855F7;
    box-shadow: 0 4px 18px rgba(168, 85, 247, 0.4);
}

[data-theme="dark"] .deck-nav-btn {
    background: #180F22;
    border-color: #3A163A;
    color: #D946EF;
    box-shadow: 0 4px 16px rgba(0, 0, 0, 0.5);
}

[data-theme="dark"] .deck-nav-btn:hover {
    background: #D946EF;
    color: #FFFFFF;
    border-color: #D946EF;
    box-shadow: 0 8px 24px rgba(217, 70, 239, 0.4);
}

[data-theme="dark"] .fanned-card {
    background: #110B17;
    border-color: rgba(255, 255, 255, 0.1);
    box-shadow: 0 12px 36px rgba(0, 0, 0, 0.55);
}

[data-theme="dark"] .fanned-card.pos-active {
    background: #180F22;
    border-color: rgba(217, 70, 239, 0.5);
    box-shadow: 0 30px 70px rgba(0, 0, 0, 0.75), 0 0 32px rgba(217, 70, 239, 0.2);
}

[data-theme="dark"] .fanned-card-title {
    color: #F8FAFC;
}

[data-theme="dark"] .deck-active-drawer {
    background: #110B17;
    border-color: #3A163A;
    box-shadow: 0 8px 32px rgba(0, 0, 0, 0.5);
}

[data-theme="dark"] .drawer-title-group h3 {
    color: #F8FAFC;
}

[data-theme="dark"] .drawer-badge {
    background: rgba(217, 70, 239, 0.12);
    color: #D946EF;
}

[data-theme="dark"] .drawer-topic-chip {
    background: #180F22;
    border-color: #3A163A;
    color: #E2E8F0;
}

[data-theme="dark"] .drawer-topic-chip:hover {
    border-color: #D946EF;
    background: rgba(217, 70, 239, 0.1);
}

/* Why Learn Bento Grid Dark Theme */
[data-theme="dark"] .why-bento-card {
    background: #110B17;
    border-color: #3A163A;
    box-shadow: 0 4px 20px rgba(0, 0, 0, 0.5);
}

[data-theme="dark"] .why-bento-card:hover {
    border-color: #D946EF;
    box-shadow: 0 16px 36px rgba(217, 70, 239, 0.18);
}

[data-theme="dark"] .why-card-body h3 {
    color: #F8FAFC;
}

[data-theme="dark"] .why-card-footer-metrics {
    border-color: #3A163A;
}

[data-theme="dark"] .why-metric-item strong {
    color: #D946EF;
}

[data-theme="dark"] .w-tag {
    background: #180F22;
    border-color: #3A163A;
    color: #CBD5E1;
}

/* About Creator Dark Theme */
[data-theme="dark"] .creator-hero-card {
    background: linear-gradient(135deg, #0F0A18 0%, #170D26 40%, #0A1628 75%, #081816 100%);
    border-color: #3A163A;
    box-shadow: 0 20px 60px rgba(0, 0, 0, 0.7), 0 0 32px rgba(217, 70, 239, 0.12);
}

[data-theme="dark"] .creator-hero-card::before {
    background: radial-gradient(circle, rgba(217, 70, 239, 0.22) 0%, rgba(108, 76, 232, 0.1) 45%, transparent 70%);
}

[data-theme="dark"] .creator-hero-card::after {
    background: radial-gradient(circle, rgba(14, 165, 233, 0.16) 0%, rgba(16, 185, 129, 0.08) 50%, transparent 70%);
}

[data-theme="dark"] .creator-role-badge {
    background: #180F22;
    border-color: #3A163A;
    color: #D946EF;
}

[data-theme="dark"] .creator-hero-headline {
    color: #F8FAFC;
}

[data-theme="dark"] .creator-hero-desc {
    color: #CBD5E1;
}

[data-theme="dark"] .creator-hero-desc strong {
    color: #F8FAFC;
}

[data-theme="dark"] .hero-pill {
    background: #180F22;
    border-color: #3A163A;
    color: #CBD5E1;
}

[data-theme="dark"] .creator-btn-primary {
    background: linear-gradient(135deg, #D946EF, #6C4CE8);
    box-shadow: 0 4px 18px rgba(217, 70, 239, 0.35);
}

[data-theme="dark"] .creator-btn-primary:hover {
    background: linear-gradient(135deg, #E879F9, #8B5CF6);
    box-shadow: 0 6px 24px rgba(217, 70, 239, 0.5);
}

[data-theme="dark"] .creator-link-arrow {
    color: #F8FAFC;
}

[data-theme="dark"] .creator-link-arrow:hover {
    color: #D946EF;
}

[data-theme="dark"] .creator-link-secondary {
    color: #94A3B8;
}

[data-theme="dark"] .creator-link-secondary:hover {
    color: #F8FAFC;
}

[data-theme="dark"] .visual-ambient-orb {
    background: radial-gradient(circle, rgba(217, 70, 239, 0.35) 0%, rgba(14, 165, 233, 0.2) 40%, transparent 75%);
}

[data-theme="dark"] .creator-popout-img {
    filter: drop-shadow(0 20px 40px rgba(0, 0, 0, 0.7));
}

[data-theme="dark"] .creator-hero-card:hover .creator-popout-img {
    filter: drop-shadow(0 28px 50px rgba(217, 70, 239, 0.4));
}

/* Search & Command Palette Dark Theme */
[data-theme="dark"] .search-command-wrapper {
    background: #110B17;
    border-color: #3A163A;
    box-shadow: 0 10px 30px rgba(0, 0, 0, 0.5);
}

[data-theme="dark"] .search-command-wrapper:focus-within {
    border-color: #D946EF;
    box-shadow: 0 12px 36px rgba(217, 70, 239, 0.25), 0 0 0 3px rgba(217, 70, 239, 0.15);
}

[data-theme="dark"] .search-icon-badge {
    background: rgba(217, 70, 239, 0.15);
    color: #D946EF;
}

[data-theme="dark"] .home-search-input {
    color: #F8FAFC;
}

[data-theme="dark"] .search-shortcut-badge {
    background: #180F22;
    border-color: #3A163A;
    color: #94A3B8;
}

[data-theme="dark"] .search-clear-btn {
    background: #180F22;
    color: #CBD5E1;
}

[data-theme="dark"] .search-quick-tags {
    border-color: rgba(255, 255, 255, 0.08);
}

[data-theme="dark"] .quick-tag-btn {
    background: #180F22;
    border-color: #3A163A;
    color: #CBD5E1;
}

[data-theme="dark"] .quick-tag-btn:hover {
    background: #D946EF;
    border-color: #D946EF;
    color: #FFFFFF;
}

[data-theme="dark"] .search-filter-chip {
    background: #110B17;
    border-color: #3A163A;
    color: #CBD5E1;
}

[data-theme="dark"] .search-filter-chip .chip-count {
    background: #180F22;
    color: #94A3B8;
}

[data-theme="dark"] .search-filter-chip.active {
    background: linear-gradient(135deg, #6C4CE8, #D946EF);
    border-color: #D946EF;
    color: #FFFFFF;
}

[data-theme="dark"] .search-results-dropdown {
    background: #110B17;
    border-color: #3A163A;
    box-shadow: 0 20px 50px rgba(0, 0, 0, 0.7);
}

[data-theme="dark"] .search-item {
    color: #F8FAFC;
}

[data-theme="dark"] .search-item:hover, [data-theme="dark"] .search-item.selected {
    background: #180F22;
}

[data-theme="dark"] .search-item-title {
    color: #F8FAFC;
}

/* Progress & Resume Dark Theme */
[data-theme="dark"] .progress-card {
    background: #110B17;
    border-color: #3A163A;
    box-shadow: 0 8px 30px rgba(0, 0, 0, 0.5);
}

[data-theme="dark"] .progress-metric-big .progress-number {
    color: #F8FAFC;
}

[data-theme="dark"] .mini-stat-val {
    color: #F8FAFC;
}

[data-theme="dark"] .progress-bar-container {
    background: #180F22;
}

[data-theme="dark"] .resume-card {
    background: linear-gradient(135deg, #110B17 0%, #180F22 100%);
    border-color: #3A163A;
}

[data-theme="dark"] .resume-card:hover {
    border-color: #38BDF8;
    box-shadow: 0 16px 40px rgba(0, 0, 0, 0.6), 0 0 20px rgba(56, 189, 248, 0.15);
}

[data-theme="dark"] .resume-body h4 {
    color: #F8FAFC;
}

[data-theme="dark"] .resume-badge-time {
    background: #180F22;
    color: #94A3B8;
}

@media (max-width: 1040px) {
    .diagnostic-arena-grid {
        grid-template-columns: 1fr;
    }
    .why-bento-grid {
        grid-template-columns: 1fr;
    }
    .why-bento-card.bento-hero-left,
    .why-bento-card.bento-hero-right,
    .why-bento-card.bento-tall {
        grid-column: span 1;
    }
    .creator-hero-card {
        grid-template-columns: 1fr;
        padding: 40px 28px 0 28px;
        gap: 24px;
    }
    .creator-hero-text {
        padding-bottom: 0;
    }
    .creator-hero-headline {
        font-size: 30px;
    }
    .creator-popout-img {
        height: 360px;
    }
}