/* ============================================
   GENGAR OS - SECURITY LAB STYLESHEET
   Theme: Gengar (Black & Purple #A07CF0)
   ============================================ */

/* --- CSS CUSTOM PROPERTIES --- */
:root {
    --purple: #A07CF0;
    --purple-dark: #7B5EA7;
    --purple-darker: #2D1B4E;
    --purple-glow: rgba(160, 124, 240, 0.4);
    --bg: #000000;
    --card-bg: #121212;
    --card-border: rgba(160, 124, 240, 0.25);
    --text: #D4D4D4;
    --text-dim: #666;
    --text-bright: #FFFFFF;
    --red: #FF5555;
    --green: #50FA7B;
    --orange: #FFB86C;
    --blue: #6272A4;
    --neon-green: #00ff00;
    --neon-orange: #ffaa00;
    --neon-red: #ff0044;
    --font-mono: 'Fira Code', 'Cascadia Code', 'Consolas', monospace;
    --font-ui: 'Share Tech Mono', 'Fira Code', monospace;
    --transition: 0.3s ease;
}

/* --- RESET & BASE --- */
*, *::before, *::after { box-sizing: border-box; margin: 0; padding: 0; }

html {
    scroll-behavior: smooth;
    font-size: 16px;
}

body {
    background-color: var(--bg);
    background-image:
        linear-gradient(rgba(160, 124, 240, 0.03) 1px, transparent 1px),
        linear-gradient(90deg, rgba(160, 124, 240, 0.03) 1px, transparent 1px);
    background-size: 30px 30px;
    color: var(--text);
    font-family: var(--font-ui);
    min-height: 100vh;
    overflow-x: hidden;
    line-height: 1.6;
}

.hidden { display: none !important; }

a { color: var(--purple); text-decoration: none; }
a:hover { color: var(--text-bright); text-decoration: underline; }

/* --- 17. CUSTOM SCROLLBAR --- */
::-webkit-scrollbar { width: 6px; height: 6px; }
::-webkit-scrollbar-track { background: #000; }
::-webkit-scrollbar-thumb {
    background: var(--purple);
    border-radius: 3px;
    box-shadow: 0 0 8px var(--purple-glow);
}
::-webkit-scrollbar-thumb:hover { background: var(--purple-dark); }

/* Firefox */
* {
    scrollbar-width: thin;
    scrollbar-color: var(--purple) #000;
}

/* ============================================
   1. GRUB BOOTLOADER
   ============================================ */
#grub-overlay {
    position: fixed;
    inset: 0;
    z-index: 9999;
    background: #000;
    display: flex;
    align-items: center;
    justify-content: center;
    flex-direction: column;
}

/* BIOS Screen */
#bios-screen {
    width: 100%;
    height: 100%;
    display: flex;
    align-items: flex-start;
    justify-content: flex-start;
    padding: 30px;
    overflow: hidden;
}

#bios-text {
    font-family: var(--font-mono);
    font-size: 14px;
    color: var(--purple);
    white-space: pre-wrap;
    line-height: 1.8;
    opacity: 0.9;
}

#bios-text .bios-ok { color: var(--green); }
#bios-text .bios-warn { color: var(--orange); }
#bios-text .bios-err { color: var(--red); }

/* GRUB Screen */
#grub-screen {
    width: 100%;
    height: 100%;
    display: flex;
    align-items: center;
    justify-content: center;
    flex-direction: column;
    background: #000;
}

.grub-box {
    border: 1px solid var(--purple-dark);
    padding: 20px 40px;
    min-width: 520px;
    max-width: 90vw;
    background: rgba(18, 18, 18, 0.6);
}

.grub-title {
    font-family: var(--font-mono);
    font-size: 14px;
    color: var(--purple);
    text-align: center;
    padding-bottom: 10px;
    letter-spacing: 1px;
}

.grub-separator {
    border-top: 1px solid var(--purple-dark);
    margin: 8px 0;
    opacity: 0.4;
}

#grub-options {
    list-style: none;
    padding: 8px 0;
}

#grub-options li {
    font-family: var(--font-mono);
    font-size: 15px;
    padding: 8px 16px;
    color: var(--text-dim);
    cursor: pointer;
    transition: all 0.15s;
    border-left: 3px solid transparent;
    user-select: none;
}

#grub-options li.active {
    background: var(--purple);
    color: #000;
    font-weight: 700;
    border-left-color: var(--text-bright);
    animation: grub-blink 1.2s ease-in-out infinite;
}

@keyframes grub-blink {
    0%, 100% { opacity: 1; }
    50% { opacity: 0.7; }
}

#grub-options li:not(.active):hover {
    color: var(--purple);
    border-left-color: var(--purple-dark);
}

.grub-help {
    font-size: 12px;
    color: var(--text-dim);
    text-align: center;
    padding-top: 6px;
}

.key-hint {
    display: inline-block;
    background: var(--purple-darker);
    color: var(--purple);
    padding: 1px 6px;
    border-radius: 3px;
    font-size: 11px;
    margin: 0 4px;
    border: 1px solid var(--purple-dark);
}

.grub-version {
    font-size: 11px;
    color: var(--text-dim);
    margin-top: 20px;
    opacity: 0.5;
}

/* ============================================
   TOPBAR / HEADER
   ============================================ */
#topbar {
    position: sticky;
    top: 0;
    z-index: 100;
    display: flex;
    align-items: center;
    gap: 12px;
    padding: 10px 20px;
    background: rgba(0, 0, 0, 0.92);
    border-bottom: 1px solid var(--card-border);
    backdrop-filter: blur(10px);
}

/* 18. Recovery / Home Button */
#btn-recovery {
    background: none;
    border: 1px solid var(--purple-dark);
    color: var(--purple);
    padding: 6px 8px;
    border-radius: 4px;
    cursor: pointer;
    display: flex;
    align-items: center;
    transition: var(--transition);
    flex-shrink: 0;
}

#btn-recovery:hover {
    background: var(--purple);
    color: #000;
    box-shadow: 0 0 12px var(--purple-glow);
}

/* 7. Breadcrumbs */
#breadcrumbs {
    display: flex;
    align-items: center;
    gap: 0;
    font-size: 13px;
    color: var(--text-dim);
    flex-shrink: 0;
    white-space: nowrap;
    overflow: hidden;
}

.bc-segment {
    color: var(--text-dim);
    padding: 2px 4px;
}

.bc-sep {
    color: var(--purple-dark);
    padding: 0 2px;
    user-select: none;
}

.bc-link {
    color: var(--purple);
    cursor: pointer;
    transition: color 0.2s;
}

.bc-link:hover { color: var(--text-bright); }
.bc-current { color: var(--text); font-weight: 500; }

/* 2. Omnibar */
#omnibar-container {
    flex: 1;
    position: relative;
    display: flex;
    align-items: center;
    background: var(--card-bg);
    border: 1px solid var(--card-border);
    border-radius: 4px;
    padding: 0 12px;
    transition: border-color var(--transition);
    max-width: 600px;
}

#omnibar-container:focus-within {
    border-color: var(--purple);
    box-shadow: 0 0 15px rgba(160, 124, 240, 0.15);
}

.omnibar-icon {
    color: var(--purple);
    font-size: 13px;
    margin-right: 8px;
    flex-shrink: 0;
    font-weight: 700;
}

#omnibar {
    width: 100%;
    background: transparent;
    border: none;
    outline: none;
    color: var(--text);
    font-family: var(--font-mono);
    font-size: 13px;
    padding: 8px 0;
    caret-color: var(--purple);
}

#omnibar::placeholder { color: var(--text-dim); opacity: 0.6; }

#omnibar-results {
    position: absolute;
    top: calc(100% + 4px);
    left: 0;
    right: 0;
    background: #0D0D0D;
    border: 1px solid var(--purple-dark);
    border-radius: 4px;
    max-height: 350px;
    overflow-y: auto;
    z-index: 200;
    box-shadow: 0 10px 30px rgba(0, 0, 0, 0.7);
}

.omni-result {
    padding: 10px 14px;
    cursor: pointer;
    border-bottom: 1px solid rgba(160, 124, 240, 0.08);
    transition: background 0.15s;
}

.omni-result:hover, .omni-result.active {
    background: rgba(160, 124, 240, 0.1);
}

.omni-result-title {
    font-size: 13px;
    color: var(--text);
    font-weight: 500;
}

.omni-result-title mark {
    background: rgba(160, 124, 240, 0.3);
    color: var(--text-bright);
    border-radius: 2px;
    padding: 0 2px;
}

.omni-result-path {
    font-size: 11px;
    color: var(--text-dim);
    margin-top: 2px;
}

.omni-result-subject {
    display: inline-block;
    font-size: 10px;
    color: var(--purple);
    background: var(--purple-darker);
    padding: 1px 6px;
    border-radius: 3px;
    margin-left: 6px;
}

/* ============================================
   SUBJECT NAVIGATION
   ============================================ */
#subject-nav {
    display: flex;
    gap: 8px;
    padding: 12px 20px;
    overflow-x: auto;
    border-bottom: 1px solid rgba(160, 124, 240, 0.08);
}

.subject-btn {
    background: transparent;
    border: 1px solid var(--card-border);
    color: var(--text-dim);
    font-family: var(--font-ui);
    font-size: 12px;
    padding: 6px 14px;
    border-radius: 20px;
    cursor: pointer;
    white-space: nowrap;
    transition: all var(--transition);
    flex-shrink: 0;
}

.subject-btn:hover {
    border-color: var(--purple);
    color: var(--purple);
}

.subject-btn.active {
    background: var(--purple);
    color: #000;
    border-color: var(--purple);
    font-weight: 700;
    box-shadow: 0 0 12px var(--purple-glow);
}

/* ============================================
   5. DASHBOARD / CARD GRID
   ============================================ */
#dashboard {
    padding: 20px;
    min-height: calc(100vh - 200px);
}

#cards-grid {
    display: grid;
    grid-template-columns: repeat(auto-fill, minmax(300px, 1fr));
    gap: 20px;
}

/* Individual Card */
.card {
    background: var(--card-bg);
    border: 1px solid var(--card-border);
    border-radius: 6px;
    overflow: hidden;
    cursor: pointer;
    transition: all 0.35s ease;
    transform: scale(1);
    opacity: 1;
}

.card:hover {
    border-color: var(--purple);
    transform: translateY(-4px);
    box-shadow: 0 10px 40px rgba(160, 124, 240, 0.15);
}

.card.filter-out {
    transform: scale(0.8);
    opacity: 0;
    pointer-events: none;
    position: absolute;
    width: 0;
    height: 0;
    overflow: hidden;
}

/* 8. Card Image with Gengar Filter */
.card-img-wrap {
    width: 100%;
    height: 160px;
    overflow: hidden;
    background: var(--purple-darker);
    position: relative;
}

.card-img {
    width: 100%;
    height: 100%;
    object-fit: cover;
    filter: contrast(1.1) brightness(0.9) hue-rotate(250deg);
    transition: transform 0.4s;
}

.card:hover .card-img { transform: scale(1.05); }

.card-img-placeholder {
    width: 100%;
    height: 100%;
    display: flex;
    align-items: center;
    justify-content: center;
    background: linear-gradient(135deg, var(--purple-darker) 0%, #0a0a0a 100%);
    font-size: 40px;
    opacity: 0.4;
}

.card-body {
    padding: 16px;
}

.card-subject {
    font-size: 10px;
    color: var(--purple);
    text-transform: uppercase;
    letter-spacing: 1.5px;
    margin-bottom: 6px;
}

.card-title {
    font-size: 15px;
    color: var(--text-bright);
    font-weight: 700;
    margin-bottom: 8px;
    line-height: 1.3;
}

.card-desc {
    font-size: 12px;
    color: var(--text-dim);
    margin-bottom: 10px;
    line-height: 1.5;
}

.card-footer {
    display: flex;
    align-items: center;
    justify-content: space-between;
    gap: 8px;
}

.card-tags {
    display: flex;
    flex-wrap: wrap;
    gap: 4px;
    flex: 1;
}

.card-tag {
    font-size: 10px;
    color: var(--text-dim);
    background: rgba(160, 124, 240, 0.08);
    padding: 2px 6px;
    border-radius: 3px;
    border: 1px solid rgba(160, 124, 240, 0.1);
}

/* 11. Difficulty Badges */
.badge {
    font-family: var(--font-mono);
    font-size: 10px;
    font-weight: 700;
    padding: 3px 10px;
    border-radius: 20px;
    text-transform: uppercase;
    letter-spacing: 1px;
    flex-shrink: 0;
}

.badge-easy {
    color: var(--neon-green);
    border: 1px solid var(--neon-green);
    box-shadow: 0 0 6px rgba(0, 255, 0, 0.2), inset 0 0 6px rgba(0, 255, 0, 0.05);
}

.badge-medium {
    color: var(--neon-orange);
    border: 1px solid var(--neon-orange);
    box-shadow: 0 0 6px rgba(255, 170, 0, 0.2), inset 0 0 6px rgba(255, 170, 0, 0.05);
}

.badge-hard {
    color: var(--neon-red);
    border: 1px solid var(--neon-red);
    box-shadow: 0 0 6px rgba(255, 0, 68, 0.2), inset 0 0 6px rgba(255, 0, 68, 0.05);
}

/* No Results */
#no-results {
    text-align: center;
    padding: 60px 20px;
    color: var(--purple-dark);
    font-size: 14px;
}

/* ============================================
   3. PROJECT VIEW / EXPEDIENTE / FOLIO
   ============================================ */
#project-view {
    display: flex;
    padding: 20px;
    gap: 20px;
    min-height: calc(100vh - 140px);
}

/* 12. TOC Sidebar */
#toc-sidebar {
    width: 220px;
    flex-shrink: 0;
    position: sticky;
    top: 70px;
    max-height: calc(100vh - 100px);
    overflow-y: auto;
}

.toc-header {
    font-size: 11px;
    color: var(--purple);
    letter-spacing: 2px;
    text-transform: uppercase;
    margin-bottom: 12px;
    padding-bottom: 8px;
    border-bottom: 1px solid var(--card-border);
}

#toc-list {
    list-style: none;
}

#toc-list li {
    margin-bottom: 4px;
}

#toc-list a {
    display: block;
    font-size: 12px;
    color: var(--text-dim);
    padding: 4px 8px;
    border-left: 2px solid transparent;
    border-radius: 0 3px 3px 0;
    transition: all 0.2s;
    text-decoration: none;
}

#toc-list a:hover, #toc-list a.active {
    color: var(--purple);
    border-left-color: var(--purple);
    background: rgba(160, 124, 240, 0.06);
}

#toc-list .toc-h3 { padding-left: 20px; font-size: 11px; }

/* The Folio */
#folio {
    flex: 1;
    background: var(--card-bg);
    border: 1px solid var(--card-border);
    border-radius: 6px;
    position: relative;
    overflow: hidden;
    box-shadow: 0 10px 50px rgba(160, 124, 240, 0.2);
}

#folio-header {
    display: flex;
    align-items: flex-start;
    justify-content: space-between;
    padding: 20px 24px;
    border-bottom: 1px solid var(--card-border);
    background: rgba(0, 0, 0, 0.3);
}

#folio-meta { flex: 1; }

#folio-title {
    font-size: 22px;
    color: var(--text-bright);
    font-weight: 700;
    margin-bottom: 8px;
    line-height: 1.3;
}

#folio-badges {
    display: flex;
    gap: 8px;
    align-items: center;
    flex-wrap: wrap;
}

#folio-close {
    background: none;
    border: 1px solid var(--card-border);
    color: var(--text-dim);
    font-size: 22px;
    width: 32px;
    height: 32px;
    border-radius: 4px;
    cursor: pointer;
    display: flex;
    align-items: center;
    justify-content: center;
    transition: var(--transition);
    flex-shrink: 0;
}

#folio-close:hover {
    background: var(--red);
    border-color: var(--red);
    color: #000;
}

/* 9. Folio Body - Independent Scroll */
#folio-body {
    padding: 24px;
    max-height: calc(100vh - 240px);
    overflow-y: auto;
    position: relative;
    z-index: 2;
}

/* 20. Watermark */
.watermark {
    position: absolute;
    top: 50%;
    left: 50%;
    transform: translate(-50%, -50%) rotate(-35deg);
    font-family: var(--font-mono);
    font-size: 5rem;
    font-weight: 700;
    color: rgba(160, 124, 240, 0.035);
    white-space: nowrap;
    pointer-events: none;
    z-index: 1;
    user-select: none;
    letter-spacing: 12px;
}

/* PDF Viewer */
.pdf-viewer {
    width: 100%;
    height: calc(100vh - 280px);
    border: none;
    border-radius: 4px;
    background: #1a1a1a;
}

/* Markdown Rendered Content */
.md-content h1, .md-content h2, .md-content h3,
.md-content h4, .md-content h5, .md-content h6 {
    color: var(--text-bright);
    margin: 24px 0 12px 0;
    padding-bottom: 6px;
    border-bottom: 1px solid rgba(160, 124, 240, 0.1);
}

.md-content h1 { font-size: 24px; color: var(--purple); }
.md-content h2 { font-size: 20px; }
.md-content h3 { font-size: 17px; border-bottom: none; }
.md-content h4 { font-size: 15px; border-bottom: none; }

.md-content p { margin: 10px 0; line-height: 1.7; }

.md-content ul, .md-content ol {
    margin: 10px 0;
    padding-left: 24px;
}

.md-content li { margin: 4px 0; }

.md-content blockquote {
    border-left: 3px solid var(--purple);
    padding: 10px 16px;
    margin: 12px 0;
    background: rgba(160, 124, 240, 0.05);
    color: var(--text-dim);
    border-radius: 0 4px 4px 0;
}

.md-content table {
    width: 100%;
    border-collapse: collapse;
    margin: 16px 0;
    font-size: 13px;
}

.md-content th {
    background: var(--purple-darker);
    color: var(--purple);
    padding: 10px 12px;
    text-align: left;
    border: 1px solid var(--card-border);
}

.md-content td {
    padding: 8px 12px;
    border: 1px solid rgba(160, 124, 240, 0.1);
}

.md-content tr:nth-child(even) {
    background: rgba(160, 124, 240, 0.03);
}

.md-content img {
    max-width: 100%;
    height: auto;
    border-radius: 4px;
    border: 1px solid var(--card-border);
    margin: 12px 0;
}

.md-content a {
    color: var(--purple);
    text-decoration: underline;
    text-decoration-style: dotted;
}

.md-content hr {
    border: none;
    border-top: 1px solid var(--card-border);
    margin: 20px 0;
}

.md-content code:not(pre code) {
    background: var(--purple-darker);
    color: var(--purple);
    padding: 2px 6px;
    border-radius: 3px;
    font-family: var(--font-mono);
    font-size: 0.9em;
}

/* ============================================
   4. TERMINAL BLOCKS (Kali Linux Style)
   ============================================ */
.terminal {
    margin: 16px 0;
    border-radius: 6px;
    overflow: hidden;
    border: 1px solid var(--card-border);
    background: #0a0a0a;
}

.terminal-header {
    display: flex;
    align-items: center;
    padding: 8px 12px;
    background: #1a1a1a;
    border-bottom: 1px solid rgba(160, 124, 240, 0.1);
    gap: 8px;
}

.terminal-dots {
    display: flex;
    gap: 6px;
}

.dot { width: 10px; height: 10px; border-radius: 50%; }
.dot-red { background: #FF5F56; }
.dot-yellow { background: #FFBD2E; }
.dot-green { background: #27C93F; }

.terminal-title {
    flex: 1;
    font-family: var(--font-mono);
    font-size: 11px;
    color: var(--text-dim);
    text-align: center;
}

.copy-btn {
    background: none;
    border: 1px solid transparent;
    color: var(--text-dim);
    cursor: pointer;
    padding: 2px 6px;
    border-radius: 3px;
    font-size: 13px;
    transition: all 0.2s;
    font-family: var(--font-mono);
}

.copy-btn:hover {
    color: var(--purple);
    border-color: var(--purple-dark);
    background: var(--purple-darker);
}

.copy-btn.copied {
    color: var(--green);
    border-color: rgba(80, 250, 123, 0.3);
}

.terminal-body {
    padding: 12px 16px;
    overflow-x: auto;
}

.terminal-prompt {
    font-family: var(--font-mono);
    font-size: 13px;
    color: var(--text);
    margin-bottom: 4px;
    user-select: none;
}

.t-red { color: var(--red); font-weight: 700; }
.t-purple { color: var(--purple); font-weight: 700; }
.t-blue { color: var(--blue); }
.t-green { color: var(--green); }

.terminal-body pre {
    margin: 0;
    background: transparent;
}

.terminal-body code {
    font-family: var(--font-mono);
    font-size: 13px;
    color: var(--text);
    line-height: 1.6;
    background: transparent;
}

/* ============================================
   13. GLITCH EFFECT
   ============================================ */
.glitch {
    position: relative;
    display: inline-block;
}

.glitch:hover {
    animation: glitch-text 0.1s steps(2) infinite;
}

.glitch::before, .glitch::after {
    content: attr(data-text);
    position: absolute;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    overflow: hidden;
    opacity: 0;
}

.glitch:hover::before {
    opacity: 0.8;
    color: var(--purple);
    animation: glitch-layer1 0.1s steps(2) infinite;
    clip-path: inset(20% 0 30% 0);
}

.glitch:hover::after {
    opacity: 0.8;
    color: var(--neon-red);
    animation: glitch-layer2 0.1s steps(2) infinite;
    clip-path: inset(50% 0 10% 0);
}

@keyframes glitch-text {
    0% { transform: translate(0); }
    25% { transform: translate(-2px, 1px); }
    50% { transform: translate(2px, -1px); }
    75% { transform: translate(-1px, -1px); }
    100% { transform: translate(1px, 1px); }
}

@keyframes glitch-layer1 {
    0% { transform: translate(2px, 0); }
    50% { transform: translate(-2px, 1px); }
    100% { transform: translate(1px, -1px); }
}

@keyframes glitch-layer2 {
    0% { transform: translate(-2px, 0); }
    50% { transform: translate(2px, -1px); }
    100% { transform: translate(-1px, 1px); }
}

/* ============================================
   6. GENGAR WIDGET
   ============================================ */
#gengar-widget {
    position: fixed;
    bottom: 20px;
    right: 20px;
    z-index: 1000;
    cursor: pointer;
    transition: transform 0.2s;
}

#gengar-widget:hover { transform: scale(1.1); }
#gengar-widget:active { transform: scale(0.95); }

.gengar-svg {
    width: 65px;
    height: 65px;
    filter: drop-shadow(0 0 15px var(--purple-glow));
    animation: floating 3s ease-in-out infinite;
}

@keyframes floating {
    0%, 100% { transform: translateY(0); }
    50% { transform: translateY(-10px); }
}

#gengar-bubble {
    position: absolute;
    bottom: 75px;
    right: 0;
    background: var(--card-bg);
    border: 1px solid var(--purple-dark);
    color: var(--text);
    font-family: var(--font-mono);
    font-size: 12px;
    padding: 10px 14px;
    border-radius: 8px 8px 0 8px;
    max-width: 260px;
    white-space: nowrap;
    box-shadow: 0 5px 20px rgba(0, 0, 0, 0.5);
    animation: bubble-in 0.25s ease;
}

#gengar-bubble::after {
    content: '';
    position: absolute;
    bottom: -6px;
    right: 10px;
    width: 0;
    height: 0;
    border-left: 6px solid transparent;
    border-right: 6px solid transparent;
    border-top: 6px solid var(--purple-dark);
}

@keyframes bubble-in {
    from { opacity: 0; transform: translateY(10px) scale(0.9); }
    to { opacity: 1; transform: translateY(0) scale(1); }
}

/* ============================================
   10. FOOTER / TELEMETRY
   ============================================ */
#sys-footer {
    display: flex;
    align-items: center;
    justify-content: space-between;
    padding: 8px 20px;
    background: rgba(0, 0, 0, 0.95);
    border-top: 1px solid var(--card-border);
    font-size: 11px;
    position: sticky;
    bottom: 0;
    z-index: 50;
}

.footer-left, .footer-center, .footer-right {
    display: flex;
    align-items: center;
    gap: 8px;
}

.footer-label { color: var(--text-dim); }
.footer-val { color: var(--purple); font-weight: 500; }
.footer-sep { color: var(--text-dim); opacity: 0.3; }

.status-dot {
    width: 7px;
    height: 7px;
    border-radius: 50%;
    background: var(--neon-green);
    box-shadow: 0 0 6px rgba(0, 255, 0, 0.5);
    animation: status-pulse 2s ease-in-out infinite;
}

@keyframes status-pulse {
    0%, 100% { opacity: 1; }
    50% { opacity: 0.4; }
}

/* ============================================
   15. RESPONSIVE DESIGN (Mobile First)
   ============================================ */
@media (max-width: 768px) {
    .grub-box {
        min-width: auto;
        width: 95vw;
        padding: 16px 20px;
    }

    #grub-options li {
        padding: 14px 16px;
        font-size: 14px;
        border-bottom: 1px solid rgba(160, 124, 240, 0.08);
    }

    #topbar {
        flex-wrap: wrap;
        gap: 8px;
        padding: 8px 12px;
    }

    #breadcrumbs { display: none; }

    #omnibar-container {
        position: fixed;
        bottom: 0;
        left: 0;
        right: 0;
        max-width: 100%;
        background: rgba(0, 0, 0, 0.95);
        border-top: 1px solid var(--card-border);
        border-radius: 0;
        z-index: 150;
        padding: 8px 12px;
        margin: 0;
    }

    #omnibar-results {
        bottom: calc(100% + 4px);
        top: auto;
    }

    #dashboard { padding-bottom: 60px; }
    #project-view { padding-bottom: 60px; }

    #subject-nav {
        padding: 8px 12px;
        gap: 6px;
    }

    .subject-btn { font-size: 11px; padding: 6px 10px; }

    #dashboard { padding: 12px; }

    #cards-grid {
        grid-template-columns: 1fr;
        gap: 12px;
    }

    #project-view {
        flex-direction: column;
        padding: 12px;
    }

    #toc-sidebar {
        width: 100%;
        position: static;
        max-height: none;
        border-bottom: 1px solid var(--card-border);
        padding-bottom: 12px;
        margin-bottom: 12px;
    }

    #folio-body { max-height: none; }

    .pdf-viewer { height: 70vh; }

    .watermark { font-size: 2.5rem; }

    #gengar-widget { bottom: 50px; right: 10px; }
    .gengar-svg { width: 50px; height: 50px; }

    #sys-footer {
        flex-direction: column;
        gap: 4px;
        padding: 6px 12px;
    }

    .footer-center { flex-wrap: wrap; justify-content: center; }
}

@media (max-width: 480px) {
    #grub-options li { font-size: 13px; padding: 12px 12px; }
    .grub-title { font-size: 11px; }
    .card-img-wrap { height: 120px; }
}

/* ============================================
   UTILITY CLASSES & TRANSITIONS
   ============================================ */
.fade-in {
    animation: fadeIn 0.4s ease;
}

@keyframes fadeIn {
    from { opacity: 0; transform: translateY(10px); }
    to { opacity: 1; transform: translateY(0); }
}

.fade-out {
    animation: fadeOut 0.3s ease forwards;
}

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

/* Scan line effect on GRUB */
#grub-overlay::after {
    content: '';
    position: absolute;
    inset: 0;
    background: repeating-linear-gradient(
        0deg,
        transparent,
        transparent 2px,
        rgba(160, 124, 240, 0.015) 2px,
        rgba(160, 124, 240, 0.015) 4px
    );
    pointer-events: none;
}

/* CRT vignette on GRUB */
#grub-overlay::before {
    content: '';
    position: absolute;
    inset: 0;
    background: radial-gradient(ellipse at center, transparent 50%, rgba(0,0,0,0.5) 100%);
    pointer-events: none;
    z-index: 1;
}