/* ============================================
   MODERN GITA WEBSITE - COMPLETE STYLESHEET
   Clean, Readable, Beautiful with Voice Features
   ============================================ */

@import url('https://fonts.googleapis.com/css2?family=Inter:wght@300;400;500;600;700;800&family=Noto+Sans+Devanagari:wght@400;500;600;700&display=swap');

/* ================= CSS VARIABLES ================= */
:root {
    /* Light Mode Colors */
    --bg-primary: #ffffff;
    --bg-secondary: #f8fafc;
    --bg-card: #ffffff;
    --text-primary: #0f172a;
    --text-secondary: #334155;
    --text-muted: #64748b;
    --border-color: #e2e8f0;
    --accent-primary: #3b82f6;
    --accent-secondary: #8b5cf6;
    --accent-gold: #f59e0b;
    --accent-red: #ef4444;
    --accent-green: #10b981;
    --shadow-sm: 0 1px 2px 0 rgb(0 0 0 / 0.05);
    --shadow-md: 0 4px 6px -1px rgb(0 0 0 / 0.1);
    --shadow-lg: 0 10px 15px -3px rgb(0 0 0 / 0.1);
    --shadow-xl: 0 20px 25px -5px rgb(0 0 0 / 0.1);
    --gradient-primary: linear-gradient(135deg, #3b82f6, #8b5cf6);
    --gradient-gold: linear-gradient(135deg, #f59e0b, #ef4444);
    --gradient-green: linear-gradient(135deg, #10b981, #059669);
    --gradient-red: linear-gradient(135deg, #ef4444, #dc2626);
}

body.dark {
    /* Dark Mode Colors */
    --bg-primary: #0f172a;
    --bg-secondary: #1e293b;
    --bg-card: #1e293b;
    --text-primary: #f1f5f9;
    --text-secondary: #cbd5e1;
    --text-muted: #94a3b8;
    --border-color: #334155;
    --shadow-sm: 0 1px 2px 0 rgb(0 0 0 / 0.3);
    --shadow-md: 0 4px 6px -1px rgb(0 0 0 / 0.4);
    --shadow-lg: 0 10px 15px -3px rgb(0 0 0 / 0.4);
}

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

body {
    font-family: 'Inter', 'Noto Sans Devanagari', -apple-system, BlinkMacSystemFont, 'Segoe UI', sans-serif;
    background: var(--bg-secondary);
    color: var(--text-primary);
    line-height: 1.6;
    transition: background 0.3s ease, color 0.3s ease;
}

/* ================= CONTAINER ================= */
.container {
    max-width: 1280px;
    margin: 0 auto;
    padding: 0 24px;
}

/* ================= HEADER ================= */
.header {
    background: rgba(255, 255, 255, 0.95);
    backdrop-filter: blur(10px);
    border-bottom: 1px solid var(--border-color);
    padding: 16px 0;
    position: sticky;
    top: 0;
    z-index: 100;
    transition: background 0.3s ease;
}

body.dark .header {
    background: rgba(15, 23, 42, 0.95);
}

.header-content {
    max-width: 1280px;
    margin: 0 auto;
    padding: 0 24px;
    display: flex;
    justify-content: space-between;
    align-items: center;
}

.logo {
    display: flex;
    align-items: center;
    gap: 12px;
}

.logo-icon {
    font-size: 2rem;
    background: var(--gradient-primary);
    -webkit-background-clip: text;
    background-clip: text;
    color: transparent;
    animation: gentlePulse 2s ease-in-out infinite;
}

@keyframes gentlePulse {
    0%, 100% { transform: scale(1); opacity: 1; }
    50% { transform: scale(1.05); opacity: 0.9; }
}

.logo-text h1 {
    font-size: 1.5rem;
    font-weight: 800;
    background: var(--gradient-primary);
    -webkit-background-clip: text;
    background-clip: text;
    color: transparent;
    letter-spacing: -0.5px;
}

.logo-text p {
    font-size: 0.7rem;
    color: var(--text-muted);
}

.back-btn {
    font-size: 1.3rem;
    text-decoration: none;
    background: var(--bg-card);
    width: 42px;
    height: 42px;
    display: flex;
    align-items: center;
    justify-content: center;
    border-radius: 12px;
    transition: all 0.2s;
    color: var(--text-secondary);
    border: 1px solid var(--border-color);
}

.back-btn:hover {
    background: var(--accent-primary);
    color: white;
    transform: scale(0.95);
    border-color: var(--accent-primary);
}

.theme-toggle {
    background: var(--bg-card);
    border: 1px solid var(--border-color);
    border-radius: 12px;
    width: 42px;
    height: 42px;
    cursor: pointer;
    font-size: 1.2rem;
    transition: all 0.2s;
    color: var(--text-secondary);
}

.theme-toggle:hover {
    background: var(--accent-primary);
    color: white;
    transform: rotate(15deg);
}

/* ================= HERO SECTION ================= */
.hero {
    background: var(--gradient-primary);
    padding: 80px 0;
    text-align: center;
    position: relative;
    overflow: hidden;
}

.hero::before {
    content: '🕉️';
    position: absolute;
    font-size: 200px;
    opacity: 0.05;
    bottom: -50px;
    left: -50px;
    transform: rotate(-15deg);
}

.hero::after {
    content: '📿';
    position: absolute;
    font-size: 150px;
    opacity: 0.05;
    top: -50px;
    right: -50px;
    transform: rotate(15deg);
}

.hero-content {
    position: relative;
    z-index: 1;
}

.hero h2 {
    font-size: 3rem;
    font-weight: 800;
    color: white;
    margin-bottom: 16px;
    letter-spacing: -1px;
}

.hero p {
    font-size: 1.1rem;
    color: rgba(255, 255, 255, 0.9);
    margin-bottom: 32px;
    max-width: 500px;
    margin-left: auto;
    margin-right: auto;
}

.search-box input {
    width: 100%;
    max-width: 450px;
    padding: 14px 24px;
    border: none;
    border-radius: 50px;
    font-size: 1rem;
    background: white;
    box-shadow: 0 10px 25px -5px rgba(0, 0, 0, 0.1);
    transition: all 0.2s;
}

.search-box input:focus {
    outline: none;
    box-shadow: 0 20px 30px -10px rgba(0, 0, 0, 0.2);
    transform: translateY(-2px);
}

/* ================= CHAPTERS GRID ================= */
.chapters-grid {
    display: grid;
    grid-template-columns: repeat(auto-fill, minmax(320px, 1fr));
    gap: 28px;
    padding: 70px 0;
}

.chapter-card {
    background: var(--bg-card);
    border-radius: 20px;
    padding: 28px;
    cursor: pointer;
    transition: all 0.3s ease;
    border: 1px solid var(--border-color);
    box-shadow: var(--shadow-sm);
    position: relative;
    overflow: hidden;
}

.chapter-card::before {
    content: '';
    position: absolute;
    top: 0;
    left: 0;
    right: 0;
    height: 4px;
    background: var(--gradient-primary);
    transform: scaleX(0);
    transition: transform 0.3s ease;
}

.chapter-card:hover::before {
    transform: scaleX(1);
}

.chapter-card:hover {
    transform: translateY(-6px);
    border-color: var(--accent-primary);
    box-shadow: var(--shadow-xl);
}

.chapter-number {
    display: inline-block;
    padding: 4px 12px;
    border-radius: 20px;
    font-size: 0.7rem;
    font-weight: 600;
    margin-bottom: 16px;
    background: var(--gradient-primary);
    color: white;
}

.chapter-card h3 {
    font-size: 1.35rem;
    font-weight: 700;
    margin-bottom: 12px;
    color: var(--text-primary);
    letter-spacing: -0.3px;
}

.chapter-card p {
    font-size: 0.9rem;
    color: var(--text-secondary);
    margin-bottom: 16px;
    line-height: 1.5;
}

.verse-badge {
    font-size: 0.75rem;
    color: var(--text-muted);
    display: flex;
    align-items: center;
    gap: 6px;
}

/* ================= CHAPTER HEADER ================= */
.chapter-header {
    background: linear-gradient(135deg, var(--bg-secondary), var(--bg-primary));
    padding: 60px 0;
    border-bottom: 1px solid var(--border-color);
}

.chapter-badge {
    display: inline-block;
    padding: 6px 18px;
    background: var(--gradient-primary);
    color: white;
    border-radius: 30px;
    font-size: 0.8rem;
    font-weight: 600;
    margin-bottom: 20px;
}

.chapter-header h1 {
    font-size: 2.5rem;
    font-weight: 800;
    margin-bottom: 20px;
    background: var(--gradient-primary);
    -webkit-background-clip: text;
    background-clip: text;
    color: transparent;
    letter-spacing: -1px;
}

.chapter-summary {
    font-size: 1rem;
    color: var(--text-secondary);
    max-width: 800px;
    margin-bottom: 16px;
    line-height: 1.7;
}

.verse-count {
    font-size: 0.85rem;
    color: var(--text-muted);
}

/* ================= VERSE CARD ================= */
.verse-card {
    background: var(--bg-card);
    border-radius: 24px;
    padding: 48px;
    margin: 48px 0;
    border: 1px solid var(--border-color);
    box-shadow: var(--shadow-lg);
    transition: all 0.3s;
    opacity: 1;
    transition: opacity 0.2s ease;
}

.sanskrit-text {
    font-size: 1.3rem;
    line-height: 1.9;
    color: var(--accent-primary);
    font-weight: 600;
    margin-bottom: 28px;
    font-family: 'Noto Sans Devanagari', monospace;
    text-align: center;
    background: rgba(59, 130, 246, 0.05);
    padding: 28px;
    border-radius: 20px;
    border-left: 4px solid var(--accent-primary);
}

.meaning-text {
    font-size: 1rem;
    color: var(--text-primary);
    margin-bottom: 20px;
    padding: 20px;
    background: rgba(245, 158, 11, 0.05);
    border-radius: 16px;
    border-left: 4px solid var(--accent-gold);
    font-weight: 500;
}

.explanation-text {
    font-size: 0.95rem;
    color: var(--text-secondary);
    margin-bottom: 24px;
    line-height: 1.7;
}

.teaching-box {
    background: linear-gradient(135deg, rgba(59, 130, 246, 0.05), rgba(139, 92, 246, 0.05));
    padding: 20px;
    border-radius: 16px;
    margin-top: 20px;
    border: 1px solid rgba(59, 130, 246, 0.2);
}

.teaching-box strong {
    color: var(--accent-primary);
    font-size: 0.85rem;
    display: block;
    margin-bottom: 8px;
    text-transform: uppercase;
    letter-spacing: 1px;
}

.teaching-text {
    color: var(--text-primary);
    font-size: 0.95rem;
}

.keywords {
    display: flex;
    flex-wrap: wrap;
    gap: 8px;
    margin-top: 20px;
}

.keyword-tag {
    background: var(--bg-secondary);
    padding: 4px 12px;
    border-radius: 20px;
    font-size: 0.7rem;
    color: var(--accent-primary);
    font-weight: 500;
    transition: all 0.2s;
    border: 1px solid var(--border-color);
}

.keyword-tag:hover {
    background: var(--accent-primary);
    color: white;
    transform: translateY(-2px);
}

/* ================= VOICE BUTTONS GROUP ================= */
.voice-buttons-group {
    display: flex;
    gap: 12px;
    margin: 28px 0;
    justify-content: center;
    flex-wrap: wrap;
}

.voice-btn {
    padding: 12px 24px;
    border: none;
    border-radius: 50px;
    font-weight: 600;
    font-size: 0.9rem;
    cursor: pointer;
    transition: all 0.3s ease;
    display: inline-flex;
    align-items: center;
    gap: 8px;
    box-shadow: var(--shadow-sm);
}

/* Sanskrit Button - Blue/Purple */
.voice-btn-sanskrit {
    background: var(--gradient-primary);
    color: white;
}

.voice-btn-sanskrit:hover {
    transform: translateY(-2px);
    box-shadow: var(--shadow-md);
}

/* Meaning Button - Gold */
.voice-btn-meaning {
    background: var(--gradient-gold);
    color: white;
}

.voice-btn-meaning:hover {
    transform: translateY(-2px);
    box-shadow: var(--shadow-md);
}

/* Teaching Button - Green */
.voice-btn-teaching {
    background: var(--gradient-green);
    color: white;
}

.voice-btn-teaching:hover {
    transform: translateY(-2px);
    box-shadow: var(--shadow-md);
}

/* Stop Button - Red */
.voice-btn.stop-btn {
    background: var(--gradient-red);
    color: white;
}

.voice-btn.stop-btn:hover {
    transform: translateY(-2px);
    box-shadow: 0 5px 15px rgba(239, 68, 68, 0.4);
}

/* Active Voice Button - Glowing Effect */
.voice-btn.active-voice {
    background: linear-gradient(135deg, #16a34a, #15803d) !important;
    color: white;
    box-shadow: 0 0 20px rgba(22, 163, 74, 0.5);
    transform: scale(1.02);
    animation: voicePulse 1s ease-in-out infinite;
}

@keyframes voicePulse {
    0%, 100% { box-shadow: 0 0 0 0 rgba(22, 163, 74, 0.4); }
    50% { box-shadow: 0 0 0 8px rgba(22, 163, 74, 0); }
}

/* ================= VERSE CONTROLS ================= */
.verse-controls {
    display: flex;
    justify-content: space-between;
    align-items: center;
    flex-wrap: wrap;
    gap: 20px;
    margin: 32px auto;
}

.font-controls {
    display: flex;
    gap: 10px;
}

.font-btn {
    width: 42px;
    height: 42px;
    border-radius: 12px;
    border: 1px solid var(--border-color);
    background: var(--bg-card);
    cursor: pointer;
    font-weight: 600;
    transition: all 0.2s;
    color: var(--text-secondary);
    font-size: 1rem;
}

.font-btn.active {
    background: var(--gradient-primary);
    color: white;
    border-color: var(--accent-primary);
}

.font-btn:hover {
    transform: translateY(-2px);
}

.verse-nav {
    display: flex;
    gap: 16px;
    align-items: center;
}

.nav-btn {
    padding: 10px 24px;
    border: none;
    border-radius: 12px;
    background: var(--gradient-primary);
    color: white;
    cursor: pointer;
    transition: all 0.2s;
    font-weight: 600;
    font-size: 0.9rem;
}

.nav-btn:hover {
    transform: translateY(-2px);
    box-shadow: var(--shadow-md);
}

#verseCounter {
    font-size: 0.9rem;
    color: var(--text-muted);
    font-weight: 500;
    background: var(--bg-secondary);
    padding: 8px 18px;
    border-radius: 30px;
}

/* ================= ALL VERSES SECTION ================= */
.all-verses {
    margin: 60px auto;
}

.section-header {
    display: flex;
    justify-content: space-between;
    align-items: center;
    margin-bottom: 28px;
    padding-bottom: 16px;
    border-bottom: 2px solid var(--accent-primary);
}

.section-header h3 {
    font-size: 1.5rem;
    font-weight: 700;
    color: var(--text-primary);
}

.toggle-btn {
    padding: 10px 24px;
    border: 1px solid var(--border-color);
    border-radius: 30px;
    background: var(--bg-card);
    color: var(--accent-primary);
    cursor: pointer;
    transition: all 0.2s;
    font-weight: 600;
}

.toggle-btn:hover {
    background: var(--accent-primary);
    color: white;
    border-color: var(--accent-primary);
    transform: translateY(-2px);
}

.verses-list {
    display: none;
    flex-direction: column;
    gap: 16px;
}

.verses-list.show {
    display: flex;
}

.verse-item {
    background: var(--bg-card);
    border-radius: 16px;
    padding: 18px 24px;
    cursor: pointer;
    transition: all 0.2s;
    border: 1px solid var(--border-color);
    box-shadow: var(--shadow-sm);
}

.verse-item:hover {
    border-color: var(--accent-primary);
    transform: translateX(6px);
    box-shadow: var(--shadow-md);
}

.verse-item-header {
    display: flex;
    justify-content: space-between;
    align-items: center;
    margin-bottom: 10px;
}

.verse-num {
    font-weight: 700;
    color: var(--accent-primary);
    font-size: 0.9rem;
}

.verse-preview {
    color: var(--text-secondary);
    font-size: 0.85rem;
    line-height: 1.5;
}

/* ================= FOOTER ================= */
.footer {
    text-align: center;
    padding: 40px;
    background: var(--bg-card);
    border-top: 1px solid var(--border-color);
    margin-top: 60px;
}

.footer p {
    color: var(--text-muted);
    font-size: 0.85rem;
}

/* ================= LOADING ================= */
.loading {
    text-align: center;
    padding: 80px;
}

.loading-spinner {
    width: 48px;
    height: 48px;
    border: 3px solid var(--border-color);
    border-top-color: var(--accent-primary);
    border-radius: 50%;
    animation: spin 0.8s linear infinite;
    margin: 0 auto 16px;
}

@keyframes spin {
    to { transform: rotate(360deg); }
}

/* ================= SCROLLBAR ================= */
::-webkit-scrollbar {
    width: 8px;
}

::-webkit-scrollbar-track {
    background: var(--bg-secondary);
}

::-webkit-scrollbar-thumb {
    background: var(--accent-primary);
    border-radius: 10px;
}

::-webkit-scrollbar-thumb:hover {
    background: var(--accent-secondary);
}

/* ================= RESPONSIVE ================= */
@media (max-width: 768px) {
    .container {
        padding: 0 20px;
    }
    
    .hero h2 {
        font-size: 2rem;
    }
    
    .hero p {
        font-size: 1rem;
    }
    
    .verse-card {
        padding: 28px 20px;
    }
    
    .sanskrit-text {
        font-size: 1rem;
        padding: 20px;
    }
    
    .verse-controls {
        flex-direction: column;
        align-items: stretch;
    }
    
    .verse-nav {
        justify-content: center;
    }
    
    .chapter-header h1 {
        font-size: 1.8rem;
    }
    
    .chapters-grid {
        grid-template-columns: 1fr;
        gap: 20px;
        padding: 40px 0;
    }
    
    .logo-text h1 {
        font-size: 1.1rem;
    }
    
    .header-content {
        padding: 0 20px;
    }
    
    .voice-buttons-group {
        gap: 10px;
    }
    
    .voice-btn {
        padding: 8px 16px;
        font-size: 0.8rem;
    }
    
    .chapter-header {
        padding: 40px 0;
    }
}

/* ================= ANIMATIONS ================= */
@keyframes fadeIn {
    from {
        opacity: 0;
        transform: translateY(20px);
    }
    to {
        opacity: 1;
        transform: translateY(0);
    }
}

.verse-card {
    animation: fadeIn 0.4s ease-out;
}

.chapter-card {
    animation: fadeIn 0.4s ease-out;
}

/* ================= PRINT STYLES ================= */
@media print {
    .header, .hero, .verse-controls, .voice-buttons-group, .all-verses, .footer, .theme-toggle, .back-btn {
        display: none;
    }
    
    .verse-card {
        box-shadow: none;
        padding: 0;
        margin: 0;
    }
    
    body {
        background: white;
        color: black;
    }
}

/* ================= UTILITY CLASSES ================= */
.text-center {
    text-align: center;
}

.mt-2 {
    margin-top: 8px;
}

.mt-4 {
    margin-top: 16px;
}

.mb-2 {
    margin-bottom: 8px;
}

.mb-4 {
    margin-bottom: 16px;
}

.hidden {
    display: none;
}