/* d:\Projects\portfolio-beingAnujChaudhary\projects\anujsNotes\style.css */

/* Custom Font Definitions from Portfolio */
@font-face {
    font-family: 'neu';
    src: url('../../assets/fonts/NeueHaasDisplayMediu.ttf') format('truetype');
    font-weight: 500;
    font-display: swap;
}

@font-face {
    font-family: 'neu';
    src: url('../../assets/fonts/NeueHaasDisplayLight.ttf') format('truetype');
    font-weight: 300;
    font-display: swap;
}

@font-face {
    font-family: 'neu';
    src: url('../../assets/fonts/NeueHaasDisplayRoman.ttf') format('truetype');
    font-weight: 400;
    font-display: swap;
}

:root {
    --bg-color: #EFEAE3;
    --text-primary: #1a1a1a;
    --text-secondary: rgba(0, 0, 0, 0.65);
    --accent-color: #FE320A;
    
    --card-bg: #ffffff;
    --card-border: rgba(0, 0, 0, 0.08);
    --card-shadow: 0 4px 6px -1px rgba(0, 0, 0, 0.07), 0 2px 4px -1px rgba(0, 0, 0, 0.04);
    --card-shadow-hover: 0 12px 28px rgba(0, 0, 0, 0.1);
    
    --flashcard-front: #ffffff;
    --flashcard-back: #FE320A;

    /* Callout colors */
    --tip-bg: #f0fdf4;
    --tip-border: #86efac;
    --tip-icon: #16a34a;

    --grammar-bg: #eff6ff;
    --grammar-border: #93c5fd;
    --grammar-icon: #2563eb;

    --warning-bg: #fffbeb;
    --warning-border: #fcd34d;
    --warning-icon: #d97706;

    --memory-bg: #fdf4ff;
    --memory-border: #d8b4fe;
    --memory-icon: #9333ea;

    --example-bg: #f8fafc;
    --example-border: #cbd5e1;
    --example-icon: #475569;
}

* {
    margin: 0;
    padding: 0;
    box-sizing: border-box;
}

body {
    font-family: 'neu', -apple-system, BlinkMacSystemFont, 'Segoe UI', Roboto, Helvetica, Arial, sans-serif;
    background-color: var(--bg-color);
    color: var(--text-primary);
    min-height: 100vh;
    overflow-x: hidden;
}

.app-container {
    display: flex;
    height: 100vh;
    padding: 1.5rem;
    gap: 1.5rem;
}

/* ===== SIDEBAR ===== */
.sidebar {
    width: 260px;
    min-width: 220px;
    padding: 2rem 1.5rem;
    display: flex;
    flex-direction: column;
    gap: 2rem;
    background: var(--card-bg);
    border: 1px solid var(--card-border);
    border-radius: 1.25rem;
    box-shadow: var(--card-shadow);
    overflow-y: auto;
}

.logo h1 {
    font-size: 1.6rem;
    font-weight: 500;
    color: var(--accent-color);
    letter-spacing: -0.02em;
}

.nav-menu h2 {
    font-size: 0.72rem;
    text-transform: uppercase;
    letter-spacing: 0.12em;
    color: var(--text-secondary);
    margin-bottom: 0.75rem;
    padding-left: 0.5rem;
}

.nav-menu ul {
    list-style: none;
    display: flex;
    flex-direction: column;
    gap: 0.25rem;
}

.nav-menu li {
    padding: 0.65rem 1rem;
    border-radius: 50px;
    cursor: pointer;
    transition: all 0.2s ease;
    color: var(--text-secondary);
    font-weight: 400;
    font-size: 0.92rem;
}

.nav-menu li:hover {
    background-color: rgba(0, 0, 0, 0.05);
    color: var(--text-primary);
}

.nav-menu li.active {
    background-color: var(--text-primary);
    color: #ffffff;
    font-weight: 500;
}

/* ===== MAIN CONTENT ===== */
.main-content {
    flex: 1;
    display: flex;
    flex-direction: column;
    gap: 1.25rem;
    overflow: hidden;
    min-width: 0;
}

.top-header {
    padding: 1.25rem 1.75rem;
    display: flex;
    justify-content: space-between;
    align-items: center;
    background: var(--card-bg);
    border: 1px solid var(--card-border);
    border-radius: 1.25rem;
    box-shadow: var(--card-shadow);
    flex-shrink: 0;
}

.top-header h2 {
    font-size: 1.3rem;
    font-weight: 500;
    letter-spacing: -0.01em;
}

.content-area {
    flex: 1;
    overflow-y: auto;
    padding-right: 0.25rem;
}

/* Custom Scrollbar */
.content-area::-webkit-scrollbar { width: 5px; }
.content-area::-webkit-scrollbar-track { background: transparent; }
.content-area::-webkit-scrollbar-thumb { background: rgba(0,0,0,0.15); border-radius: 10px; }

/* View Container Animation */
.view-container {
    animation: fadeIn 0.35s ease forwards;
}

@keyframes fadeIn {
    from { opacity: 0; transform: translateY(8px); }
    to { opacity: 1; transform: translateY(0); }
}

/* ===== NOTE CARDS ===== */
.notes-section { margin-bottom: 2rem; }

.note-card {
    background: var(--card-bg);
    border: 1px solid var(--card-border);
    border-radius: 1.25rem;
    padding: 2rem;
    margin-bottom: 1.25rem;
    transition: transform 0.25s ease, box-shadow 0.25s ease;
    box-shadow: var(--card-shadow);
}

.note-card:hover {
    transform: translateY(-2px);
    box-shadow: var(--card-shadow-hover);
}

.note-card h3 {
    font-size: 1.4rem;
    color: var(--text-primary);
    margin-bottom: 0.4rem;
    font-weight: 500;
    letter-spacing: -0.01em;
}

/* ===== VIDEO LINK ===== */
.video-link {
    display: inline-flex;
    align-items: center;
    gap: 0.4rem;
    margin-bottom: 1.5rem;
    color: var(--accent-color);
    text-decoration: none;
    font-weight: 500;
    font-size: 0.9rem;
    padding: 0.45rem 1rem;
    background: rgba(254, 50, 10, 0.08);
    border-radius: 50px;
    border: 1px solid rgba(254, 50, 10, 0.2);
    transition: all 0.2s ease;
}

.video-link:hover {
    background: var(--accent-color);
    color: white;
    border-color: var(--accent-color);
}

/* ===== NOTE CONTENT ===== */
.note-content {
    color: var(--text-secondary);
    line-height: 1.7;
}

.note-content h4 {
    color: var(--text-primary);
    margin-top: 1.75rem;
    margin-bottom: 0.75rem;
    font-size: 1.05rem;
    font-weight: 500;
    padding-bottom: 0.4rem;
    border-bottom: 1px solid rgba(0,0,0,0.06);
}

.note-content p {
    margin-bottom: 1rem;
}

.note-content ul, .note-content ol {
    margin-left: 1.5rem;
    margin-bottom: 1rem;
}

.note-content li {
    margin-bottom: 0.35rem;
    line-height: 1.65;
}

/* ===== TABLES ===== */
.note-content table {
    width: 100%;
    border-collapse: collapse;
    margin-bottom: 1.5rem;
    background: white;
    border-radius: 10px;
    overflow: hidden;
    border: 1px solid rgba(0,0,0,0.07);
    font-size: 0.92rem;
}

.note-content th, .note-content td {
    border: 1px solid rgba(0,0,0,0.07);
    padding: 0.7rem 0.9rem;
    text-align: left;
    vertical-align: middle;
}

.note-content th {
    background: rgba(0, 0, 0, 0.04);
    font-weight: 600;
    color: var(--text-primary);
    font-size: 0.82rem;
    text-transform: uppercase;
    letter-spacing: 0.04em;
}

.note-content tr:nth-child(even) td {
    background: rgba(0,0,0,0.015);
}

.note-content tr:hover td {
    background: rgba(254, 50, 10, 0.03);
}

/* ===== CODE ===== */
.note-content code {
    background: rgba(0, 0, 0, 0.06);
    padding: 0.15rem 0.45rem;
    border-radius: 4px;
    font-family: 'Fira Code', 'Cascadia Code', monospace;
    font-size: 0.88em;
    color: #c2410c;
    border: 1px solid rgba(0,0,0,0.08);
}

/* ===== BLOCKQUOTE ===== */
.note-content blockquote {
    background: var(--grammar-bg);
    border-left: 4px solid var(--grammar-icon);
    border-radius: 0 8px 8px 0;
    padding: 1rem 1.25rem;
    margin: 1rem 0 1.25rem 0;
    color: #1e3a5f;
    font-style: italic;
    line-height: 1.8;
}

/* ===== CALLOUT BOXES ===== */
.callout {
    border-radius: 10px;
    padding: 1rem 1.25rem;
    margin: 1.25rem 0;
    display: flex;
    gap: 0.75rem;
    align-items: flex-start;
    border: 1px solid;
    font-size: 0.93rem;
    line-height: 1.6;
}

.callout-icon {
    font-size: 1.1rem;
    flex-shrink: 0;
    margin-top: 0.05rem;
}

.callout-content {
    flex: 1;
}

.callout-title {
    font-weight: 600;
    font-size: 0.8rem;
    text-transform: uppercase;
    letter-spacing: 0.06em;
    margin-bottom: 0.3rem;
}

.callout.tip {
    background: var(--tip-bg);
    border-color: var(--tip-border);
    color: #14532d;
}
.callout.tip .callout-title { color: var(--tip-icon); }

.callout.grammar {
    background: var(--grammar-bg);
    border-color: var(--grammar-border);
    color: #1e3a5f;
}
.callout.grammar .callout-title { color: var(--grammar-icon); }

.callout.warning {
    background: var(--warning-bg);
    border-color: var(--warning-border);
    color: #78350f;
}
.callout.warning .callout-title { color: var(--warning-icon); }

.callout.memory {
    background: var(--memory-bg);
    border-color: var(--memory-border);
    color: #581c87;
}
.callout.memory .callout-title { color: var(--memory-icon); }

.callout.example {
    background: var(--example-bg);
    border-color: var(--example-border);
    color: #1e293b;
}
.callout.example .callout-title { color: var(--example-icon); }

/* ===== NAVIGATION BUTTONS (between episodes) ===== */
.navigation-buttons {
    display: flex;
    justify-content: space-between;
    align-items: center;
    gap: 1rem;
    margin-top: 2rem;
    padding-top: 1.5rem;
    border-top: 1px solid var(--card-border);
    flex-wrap: wrap;
}

.nav-btn {
    display: inline-flex;
    align-items: center;
    gap: 0.5rem;
    padding: 0.7rem 1.4rem;
    border-radius: 50px;
    text-decoration: none;
    font-weight: 500;
    font-size: 0.9rem;
    transition: all 0.2s ease;
    border: 1px solid var(--card-border);
    color: var(--text-primary);
    background: white;
}

.nav-btn:hover {
    background: var(--text-primary);
    color: white;
    border-color: var(--text-primary);
}

.nav-btn.primary {
    background: var(--text-primary);
    color: white;
    border-color: var(--text-primary);
}

.nav-btn.primary:hover {
    background: var(--accent-color);
    border-color: var(--accent-color);
}

/* ===== OLD FLASHCARDS GRID (kept for compat) ===== */
.flashcards-section {
    border-top: 1px solid rgba(0, 0, 0, 0.1);
    padding-top: 2rem;
    padding-bottom: 2rem;
}

.flashcards-section h2 {
    font-size: 1.5rem;
    font-weight: 500;
    margin-bottom: 1.5rem;
    text-align: center;
}

.flashcards-grid {
    display: grid;
    grid-template-columns: repeat(auto-fill, minmax(260px, 1fr));
    gap: 2rem;
}

.flashcard-wrapper {
    perspective: 1000px;
    height: 280px;
}

.flashcard {
    width: 100%;
    height: 100%;
    position: relative;
    transition: transform 0.6s cubic-bezier(0.4, 0.2, 0.2, 1);
    transform-style: preserve-3d;
    cursor: pointer;
}

.flashcard.flipped { transform: rotateY(180deg); }

.flashcard-face {
    position: absolute;
    width: 100%;
    height: 100%;
    -webkit-backface-visibility: hidden;
    backface-visibility: hidden;
    border-radius: 1rem;
    display: flex;
    flex-direction: column;
    justify-content: center;
    align-items: center;
    padding: 1.5rem;
    text-align: center;
    border: 1px solid var(--card-border);
    box-shadow: var(--card-shadow);
}

.flashcard-front { background: var(--flashcard-front); color: var(--text-primary); }
.flashcard-front h3 { font-size: 1.4rem; font-weight: 500; }
.flashcard-back { background: var(--flashcard-back); color: white; transform: rotateY(180deg); }
.flashcard-back p { font-size: 1.1rem; line-height: 1.5; }
.click-hint { position: absolute; bottom: 1rem; font-size: 0.75rem; opacity: 0.55; text-transform: uppercase; letter-spacing: 0.05em; }

/* ===== MOBILE RESPONSIVE ===== */
@media (max-width: 768px) {
    .app-container {
        flex-direction: column;
        height: auto;
        min-height: 100vh;
        padding: 0.75rem;
        gap: 0.75rem;
    }
    
    .sidebar {
        width: 100%;
        min-width: unset;
        padding: 1rem 1.25rem;
        border-radius: 1rem;
        gap: 1rem;
    }

    .logo h1 { font-size: 1.4rem; }
    
    .nav-menu ul {
        flex-direction: row;
        overflow-x: auto;
        flex-wrap: nowrap;
        gap: 0.4rem;
        padding-bottom: 0.25rem;
    }

    .nav-menu ul::-webkit-scrollbar { height: 0; }
    
    .nav-menu li {
        white-space: nowrap;
        font-size: 0.82rem;
        padding: 0.5rem 0.85rem;
    }

    .main-content {
        gap: 0.75rem;
        overflow: visible;
    }

    .top-header {
        padding: 1rem 1.25rem;
        border-radius: 1rem;
    }

    .top-header h2 { font-size: 1.05rem; }

    .content-area {
        overflow-y: visible;
        padding-right: 0;
    }

    .note-card {
        padding: 1.25rem;
        border-radius: 1rem;
    }

    .note-content h4 {
        font-size: 0.98rem;
        margin-top: 1.25rem;
    }

    .note-content table {
        font-size: 0.8rem;
        display: block;
        overflow-x: auto;
        -webkit-overflow-scrolling: touch;
    }

    .note-content th, .note-content td {
        padding: 0.5rem 0.6rem;
    }

    .callout {
        padding: 0.85rem 1rem;
        font-size: 0.88rem;
    }

    .navigation-buttons {
        flex-direction: column;
        align-items: stretch;
    }

    .nav-btn {
        justify-content: center;
    }
}

@media (max-width: 480px) {
    .app-container { padding: 0.5rem; }
    .note-card { padding: 1rem; }
    .note-content code { font-size: 0.82em; }
}

/* ===== QUIZLET-STYLE FLASHCARD REDESIGN ===== */
.quizlet-top-bar {
    margin-bottom: 0.5rem;
}

.icon-btn:hover {
    color: var(--accent-color) !important;
}

.tts-btn:hover {
    color: var(--accent-color) !important;
    background: var(--bg-secondary);
    border-radius: 8px;
}

.flashcard-3d-container {
    margin-bottom: 0.5rem;
}

.flashcard-element:hover {
    box-shadow: 0 12px 32px rgba(0,0,0,0.12);
}

.inline-nav-btn:hover {
    transform: scale(1.05);
}

.hint-btn:hover {
    background: var(--bg-secondary) !important;
    color: var(--text-primary) !important;
}

/* Fix text selection */
.card-front-text, .card-back-text {
    user-select: none;
}


/* ===== QUIZLET-STYLE FLASHCARD REDESIGN ===== */
.quizlet-top-bar {
    margin-bottom: 0.5rem;
}

.icon-btn:hover {
    color: var(--accent-color) !important;
}

.tts-btn:hover {
    color: var(--accent-color) !important;
    background: var(--bg-secondary);
    border-radius: 8px;
}

.flashcard-3d-container {
    margin-bottom: 0.5rem;
}

.flashcard-element:hover {
    box-shadow: 0 12px 32px rgba(0,0,0,0.12);
}

.inline-nav-btn:hover {
    transform: scale(1.05);
}

.hint-btn:hover {
    background: var(--bg-secondary) !important;
    color: var(--text-primary) !important;
}

/* Fix text selection */
.card-front-text, .card-back-text {
    user-select: none;
}

/* Ensure progress bar is smooth */
.progress-fill {
    transition: width 0.3s cubic-bezier(0.4, 0.0, 0.2, 1);
}

/* Mermaid Diagram Styling */
.mermaid {
    background: white;
    padding: 1.5rem;
    border-radius: 12px;
    border: 1px solid var(--card-border);
    box-shadow: 0 4px 12px rgba(0,0,0,0.03);
    margin: 1.5rem 0 2rem 0;
    display: flex;
    justify-content: center;
    overflow-x: auto;
    max-width: 100%;
}

/* Glassmorphism Global Overrides */
body {
    background: linear-gradient(135deg, #e0c3fc 0%, #8ec5fc 100%) !important;
    color: #111 !important;
    background-attachment: fixed !important;
}

.sidebar, .note-card, .content-area, .view-container {
    background: rgba(255, 255, 255, 0.4) !important;
    backdrop-filter: blur(16px) !important;
    -webkit-backdrop-filter: blur(16px) !important;
    border: 1px solid rgba(255, 255, 255, 0.6) !important;
    box-shadow: 0 8px 32px 0 rgba(31, 38, 135, 0.1) !important;
    border-radius: 1.25rem !important;
}

h1, h2, h3, h4 {
    color: #000 !important;
    font-weight: 600 !important;
    letter-spacing: -0.02em;
}

/* ===== ML PAGE CONTENT TYPOGRAPHY ===== */

/* Base typography for all generated markdown content */
.markdown-cell {
    font-size: 1rem;
    line-height: 1.8;
    color: #1a1a1a;
}

/* Large section break headings (# heading) */
.content-area h1 {
    font-size: 1.75rem !important;
    font-weight: 700 !important;
    margin: 2.5rem 0 1rem 0;
    padding-bottom: 0.5rem;
    border-bottom: 2px solid rgba(0,0,0,0.08);
    letter-spacing: -0.03em;
}

/* Card title headings (## heading) */
.content-area .note-card h2,
.content-area .markdown-cell h2 {
    font-size: 1.4rem !important;
    font-weight: 600 !important;
    margin-bottom: 0.6rem;
    margin-top: 0.25rem;
}

/* Sub-section headings (### heading) */
.content-area .note-card h3,
.content-area .markdown-cell h3 {
    font-size: 1.15rem !important;
    font-weight: 600 !important;
    margin-top: 1.75rem;
    margin-bottom: 0.5rem;
    color: #1a1a1a !important;
}

/* Sub-sub-section headings (#### heading) */
.content-area .note-card h4,
.content-area .markdown-cell h4 {
    font-size: 1rem !important;
    font-weight: 600 !important;
    margin-top: 1.25rem;
    margin-bottom: 0.4rem;
    text-transform: uppercase;
    letter-spacing: 0.04em;
    color: rgba(0,0,0,0.55) !important;
}

/* Paragraphs */
.markdown-cell p,
.note-card p {
    font-size: 1rem;
    line-height: 1.8;
    margin-bottom: 1rem;
    color: #1a1a1a;
}

/* Note card subtitle / description (first paragraph right below h2) */
.note-card > p:first-of-type {
    color: rgba(0,0,0,0.5);
    font-size: 0.92rem;
    margin-bottom: 1.25rem;
}

/* Lists */
.markdown-cell ul,
.markdown-cell ol,
.note-card ul,
.note-card ol {
    padding-left: 1.6rem;
    margin: 0.5rem 0 1.1rem 0;
}

.markdown-cell li,
.note-card li {
    font-size: 1rem;
    line-height: 1.75;
    margin-bottom: 0.4rem;
    color: #1a1a1a;
}

/* Nested list items */
.markdown-cell li > ul,
.markdown-cell li > ol,
.note-card li > ul,
.note-card li > ol {
    margin-top: 0.3rem;
    margin-bottom: 0.3rem;
}

/* Strong text */
.markdown-cell strong,
.note-card strong {
    font-weight: 700;
    color: #000;
}

/* Inline code */
.markdown-cell code,
.note-card code {
    background: rgba(0,0,0,0.07);
    padding: 0.1rem 0.4rem;
    border-radius: 4px;
    font-family: 'Fira Code', 'Cascadia Code', 'Consolas', monospace;
    font-size: 0.88em;
    color: #c2410c;
    border: 1px solid rgba(0,0,0,0.08);
    word-break: break-word;
}

/* Tables */
.markdown-cell table,
.note-card table {
    width: 100%;
    border-collapse: collapse;
    margin: 1rem 0 1.5rem 0;
    background: rgba(255,255,255,0.8);
    border-radius: 10px;
    overflow: hidden;
    border: 1px solid rgba(0,0,0,0.08);
    font-size: 0.95rem;
}

.markdown-cell th,
.note-card th {
    background: rgba(0,0,0,0.06);
    font-weight: 600;
    font-size: 0.85rem;
    text-transform: uppercase;
    letter-spacing: 0.04em;
    padding: 0.75rem 1rem;
    text-align: left;
    color: #1a1a1a;
    border-bottom: 2px solid rgba(0,0,0,0.1);
}

.markdown-cell td,
.note-card td {
    padding: 0.7rem 1rem;
    border-bottom: 1px solid rgba(0,0,0,0.05);
    vertical-align: middle;
    line-height: 1.6;
    color: #1a1a1a;
}

.markdown-cell tr:last-child td,
.note-card tr:last-child td {
    border-bottom: none;
}

.markdown-cell tr:nth-child(even) td,
.note-card tr:nth-child(even) td {
    background: rgba(0,0,0,0.02);
}

/* Horizontal rule */
.markdown-cell hr,
.note-card hr {
    border: none;
    border-top: 1px solid rgba(0,0,0,0.1);
    margin: 2rem 0;
}

/* Callout boxes inside markdown cells */
.markdown-cell .callout {
    margin: 1.25rem 0;
    font-size: 0.95rem;
    line-height: 1.7;
}

/* Code blocks (output) */
.output-stream,
.output-text {
    font-size: 0.88rem !important;
    line-height: 1.6;
}

/* Responsive: mobile improvements */
@media (max-width: 768px) {
    .markdown-cell {
        font-size: 0.97rem;
    }

    .markdown-cell table,
    .note-card table {
        display: block;
        overflow-x: auto;
        -webkit-overflow-scrolling: touch;
        font-size: 0.88rem;
    }

    .markdown-cell th,
    .note-card th,
    .markdown-cell td,
    .note-card td {
        padding: 0.55rem 0.75rem;
        white-space: nowrap;
    }

    .content-area h1 {
        font-size: 1.4rem !important;
        margin-top: 1.75rem;
    }

    .content-area .note-card h2,
    .content-area .markdown-cell h2 {
        font-size: 1.2rem !important;
    }

    .content-area .note-card h3,
    .content-area .markdown-cell h3 {
        font-size: 1.05rem !important;
        margin-top: 1.25rem;
    }

    .mermaid {
        padding: 1rem;
        margin: 1rem 0 1.5rem 0;
    }
}