/* ========================================
   AI Study Planner - Complete Stylesheet
   With Dark/Light Mode & Tech Feel
   Hackathon 2026
======================================== */

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

/* CSS Variables - Light Mode (Default) */
:root {
    /* Primary Colors */
    --primary: #4361ee;
    --primary-dark: #3a0ca3;
    --primary-light: #4895ef;
    --secondary: #4cc9f0;
    --accent: #f72585;
    
    /* Status Colors */
    --success: #06d6a0;
    --success-light: #2dd4bf;
    --warning: #ffd166;
    --warning-light: #fbbf24;
    --danger: #ef476f;
    --danger-light: #f87171;
    
    /* Background Colors - Light Mode */
    --bg-primary: #f8fafc;
    --bg-secondary: #ffffff;
    --bg-tertiary: #f1f5f9;
    --bg-gradient: linear-gradient(135deg, #f8fafc 0%, #e2e8f0 100%);
    
    /* Text Colors */
    --text-primary: #1e293b;
    --text-secondary: #475569;
    --text-tertiary: #64748b;
    --text-muted: #94a3b8;
    
    /* Card & Panel */
    --card-bg: #ffffff;
    --card-border: #e2e8f0;
    --panel-bg: #ffffff;
    --panel-shadow: 0 10px 30px rgba(0, 0, 0, 0.08);
    --panel-shadow-hover: 0 20px 40px rgba(0, 0, 0, 0.12);
    
    /* Cognitive Load Colors */
    --cog-high: #ef4444;
    --cog-med: #f59e0b;
    --cog-low: #10b981;
    
    /* Borders & Radius */
    --border-radius: 16px;
    --border-radius-sm: 10px;
    --border-radius-xs: 6px;
    --border-color: #e2e8f0;
    
    /* Transitions */
    --transition-fast: all 0.15s ease;
    --transition-normal: all 0.3s ease;
    --transition-slow: all 0.5s ease;
    
    /* Glow Effects */
    --glow-primary: 0 0 20px rgba(67, 97, 238, 0.3);
    --glow-success: 0 0 20px rgba(6, 214, 160, 0.3);
    --glow-accent: 0 0 20px rgba(247, 37, 133, 0.3);
    
    /* Shadows */
    --shadow-sm: 0 2px 4px rgba(0, 0, 0, 0.05);
    --shadow-md: 0 4px 12px rgba(0, 0, 0, 0.08);
    --shadow-lg: 0 10px 30px rgba(0, 0, 0, 0.1);
    
    /* Gradient Text */
    --gradient-primary: linear-gradient(135deg, #4361ee, #4cc9f0);
    --gradient-accent: linear-gradient(135deg, #f72585, #4361ee);
    --gradient-success: linear-gradient(135deg, #06d6a0, #4cc9f0);
}

/* Dark Mode Variables */
[data-theme="dark"] {
    /* Primary Colors - Enhanced for Dark Mode */
    --primary: #6366f1;
    --primary-dark: #4f46e5;
    --primary-light: #818cf8;
    --secondary: #22d3ee;
    --accent: #ec4899;
    
    /* Status Colors - Brighter for Dark Mode */
    --success: #34d399;
    --success-light: #10b981;
    --warning: #fbbf24;
    --warning-light: #fcd34d;
    --danger: #f87171;
    --danger-light: #ef4444;
    
    /* Background Colors - Dark Mode */
    --bg-primary: #0f172a;
    --bg-secondary: #1e293b;
    --bg-tertiary: #334155;
    --bg-gradient: linear-gradient(135deg, #0f172a 0%, #1e293b 100%);
    
    /* Text Colors - Dark Mode */
    --text-primary: #f1f5f9;
    --text-secondary: #cbd5e1;
    --text-tertiary: #94a3b8;
    --text-muted: #64748b;
    
    /* Card & Panel - Dark Mode */
    --card-bg: #1e293b;
    --card-border: #334155;
    --panel-bg: #1e293b;
    --panel-shadow: 0 10px 30px rgba(0, 0, 0, 0.4);
    --panel-shadow-hover: 0 20px 40px rgba(0, 0, 0, 0.5);
    
    /* Cognitive Load Colors - Dark Mode */
    --cog-high: #f87171;
    --cog-med: #fbbf24;
    --cog-low: #34d399;
    
    /* Borders - Dark Mode */
    --border-color: #334155;
    
    /* Glow Effects - Enhanced for Dark Mode */
    --glow-primary: 0 0 30px rgba(99, 102, 241, 0.4);
    --glow-success: 0 0 30px rgba(52, 211, 153, 0.4);
    --glow-accent: 0 0 30px rgba(236, 72, 153, 0.4);
    
    /* Shadows - Dark Mode */
    --shadow-sm: 0 2px 4px rgba(0, 0, 0, 0.3);
    --shadow-md: 0 4px 12px rgba(0, 0, 0, 0.4);
    --shadow-lg: 0 10px 30px rgba(0, 0, 0, 0.5);
}

/* Base Body Styles */
body {
    font-family: 'Inter', -apple-system, BlinkMacSystemFont, sans-serif;
    background: var(--bg-gradient);
    color: var(--text-primary);
    min-height: 100vh;
    padding: 20px;
    position: relative;
    overflow-x: hidden;
    transition: var(--transition-normal);
}

/* Modern Heading Styles */
h1, h2, h3, h4, h5, h6 {
    font-family: 'Outfit', 'Space Grotesk', sans-serif;
    font-weight: 700;
    letter-spacing: -0.02em;
    line-height: 1.3;
}

h1 {
    font-weight: 800;
    font-size: 2.5rem;
}

h2 {
    font-weight: 700;
    font-size: 2rem;
}

h3 {
    font-weight: 700;
    font-size: 1.5rem;
}

h4 {
    font-weight: 600;
    font-size: 1.25rem;
}

h5 {
    font-weight: 600;
    font-size: 1.1rem;
}

h6 {
    font-weight: 600;
    font-size: 1rem;
}

/* Animated Background Particles */
body::before {
    content: '';
    position: fixed;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    background-image: 
        radial-gradient(circle at 20% 80%, rgba(67, 97, 238, 0.1) 0%, transparent 50%),
        radial-gradient(circle at 80% 20%, rgba(76, 201, 240, 0.1) 0%, transparent 50%),
        radial-gradient(circle at 40% 40%, rgba(247, 37, 133, 0.05) 0%, transparent 50%);
    pointer-events: none;
    z-index: -1;
    animation: bgPulse 10s ease-in-out infinite;
}

[data-theme="dark"] body::before {
    background-image: 
        radial-gradient(circle at 20% 80%, rgba(99, 102, 241, 0.15) 0%, transparent 50%),
        radial-gradient(circle at 80% 20%, rgba(34, 211, 238, 0.15) 0%, transparent 50%),
        radial-gradient(circle at 40% 40%, rgba(236, 72, 153, 0.1) 0%, transparent 50%);
}

@keyframes bgPulse {
    0%, 100% { opacity: 1; }
    50% { opacity: 0.7; }
}

/* Container */
.container {
    max-width: 1600px;
    margin: 0 auto;
}

/* ========================================
   THEME TOGGLE BUTTON
======================================== */
.theme-toggle {
    position: fixed;
    top: 20px;
    right: 20px;
    z-index: 10000;
    width: 50px;
    height: 50px;
    border-radius: 50%;
    border: none;
    background: var(--card-bg);
    color: var(--primary);
    font-size: 1.2rem;
    cursor: pointer;
    box-shadow: var(--shadow-lg);
    transition: var(--transition-normal);
    display: flex;
    align-items: center;
    justify-content: center;
}

.theme-toggle:hover {
    transform: scale(1.1);
    box-shadow: var(--glow-primary);
}

.theme-toggle i {
    transition: var(--transition-normal);
}

[data-theme="dark"] .theme-toggle {
    background: linear-gradient(135deg, #1e293b, #334155);
    color: #fbbf24;
    border: 2px solid #6366f1;
}

[data-theme="dark"] .theme-toggle:hover {
    border-color: #fbbf24;
    box-shadow: 0 0 20px rgba(251, 191, 36, 0.4);
}

/* ========================================
   HEADER STYLES
======================================== */
.header {
    display: flex;
    justify-content: space-between;
    align-items: center;
    padding: 1.5rem 0;
    margin-bottom: 2rem;
    flex-wrap: wrap;
    gap: 1rem;
}

.logo {
    display: flex;
    align-items: center;
    gap: 1rem;
}

.logo i {
    font-size: 2.5rem;
    background: var(--gradient-primary);
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
    background-clip: text;
    animation: iconPulse 2s ease-in-out infinite;
}

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

.logo h1 {
    font-family: 'Outfit', 'Space Grotesk', sans-serif;
    font-weight: 800;
    font-size: 2rem;
    letter-spacing: -0.02em;
    background: var(--gradient-primary);
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
    background-clip: text;
    text-transform: uppercase;
    font-display: swap;
}

.logo p {
    color: var(--text-tertiary);
    font-size: 0.85rem;
    margin-top: 2px;
}

.hackathon-badge {
    display: flex;
    flex-direction: column;
    align-items: flex-end;
    gap: 0.5rem;
}

.badge {
    background: var(--gradient-accent);
    color: white;
    padding: 0.5rem 1rem;
    border-radius: 50px;
    font-weight: 600;
    font-size: 0.85rem;
    display: flex;
    align-items: center;
    gap: 0.5rem;
    box-shadow: var(--shadow-md);
}

.timer {
    background: var(--bg-secondary);
    color: var(--text-primary);
    padding: 0.4rem 1rem;
    border-radius: 50px;
    font-size: 0.8rem;
    font-weight: 500;
    border: 1px solid var(--border-color);
    display: flex;
    align-items: center;
    gap: 0.5rem;
}

/* ========================================
   HERO SECTION
======================================== */
.hero {
    background: var(--card-bg);
    border-radius: var(--border-radius);
    padding: 3rem;
    margin-bottom: 2rem;
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 3rem;
    align-items: center;
    border: 1px solid var(--border-color);
    box-shadow: var(--panel-shadow);
    position: relative;
    overflow: hidden;
}

.hero::before {
    content: '';
    position: absolute;
    top: 0;
    left: 0;
    right: 0;
    height: 4px;
    background: var(--gradient-primary);
}

.hero h2 {
    font-family: 'Outfit', 'Space Grotesk', sans-serif;
    font-size: 2.5rem;
    font-weight: 700;
    margin-bottom: 1rem;
    line-height: 1.2;
    letter-spacing: -0.03em;
    color: var(--text-primary);
}

.highlight {
    background: var(--gradient-primary);
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
    background-clip: text;
    font-weight: 700;
}

.hero p {
    color: var(--text-secondary);
    line-height: 1.6;
    margin-bottom: 1.5rem;
}

.stats {
    display: flex;
    flex-wrap: wrap;
    gap: 1.5rem;
    margin-top: 2rem;
}

.stat {
    display: flex;
    align-items: center;
    gap: 0.5rem;
    color: var(--primary);
    font-weight: 600;
    font-size: 0.9rem;
    padding: 0.5rem 1rem;
    background: var(--bg-tertiary);
    border-radius: 50px;
    transition: var(--transition-normal);
}

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

.stat i {
    font-size: 1rem;
}

/* Hero Visual - Schedule Preview */
.hero-visual {
    display: flex;
    justify-content: center;
    align-items: center;
}

.schedule-preview {
    background: var(--bg-tertiary);
    border-radius: var(--border-radius);
    padding: 1.5rem;
    width: 100%;
    max-width: 350px;
    border: 1px solid var(--border-color);
}

.preview-header {
    text-align: center;
    font-weight: 600;
    color: var(--primary);
    margin-bottom: 1rem;
    display: flex;
    align-items: center;
    justify-content: center;
    gap: 0.5rem;
}

.preview-day {
    display: grid;
    grid-template-columns: 40px 1fr 1fr;
    gap: 0.5rem;
    padding: 0.5rem 0;
    border-bottom: 1px solid var(--border-color);
    font-size: 0.85rem;
}

.preview-day:last-child {
    border-bottom: none;
}

.preview-day span:first-child {
    color: var(--text-tertiary);
    font-weight: 500;
}

.preview-day .slot-high,
.preview-day .slot-med,
.preview-day .slot-low {
    padding: 0.3rem 0.5rem;
    border-radius: var(--border-radius-xs);
    font-size: 0.75rem;
    font-weight: 500;
}

.slot-high {
    background: rgba(239, 68, 68, 0.2);
    color: var(--cog-high);
}

.slot-med {
    background: rgba(245, 158, 11, 0.2);
    color: var(--cog-med);
}

.slot-low {
    background: rgba(16, 185, 129, 0.2);
    color: var(--cog-low);
}

/* ========================================
   PROGRESS TRACKER
======================================== */
.progress-tracker {
    display: flex;
    justify-content: center;
    align-items: center;
    gap: 0;
    margin-bottom: 2rem;
    padding: 1.5rem;
    background: var(--card-bg);
    border-radius: var(--border-radius);
    box-shadow: var(--shadow-md);
}

.progress-step {
    display: flex;
    flex-direction: column;
    align-items: center;
    gap: 0.5rem;
}

.step-number {
    width: 40px;
    height: 40px;
    border-radius: 50%;
    background: var(--bg-tertiary);
    color: var(--text-tertiary);
    display: flex;
    align-items: center;
    justify-content: center;
    font-weight: 600;
    transition: var(--transition-normal);
    border: 2px solid var(--border-color);
}

.progress-step.active .step-number {
    background: var(--gradient-primary);
    color: white;
    border-color: var(--primary);
    box-shadow: var(--glow-primary);
}

.progress-step span {
    font-size: 0.8rem;
    color: var(--text-tertiary);
    font-weight: 500;
}

.progress-step.active span {
    color: var(--primary);
}

.progress-line {
    width: 60px;
    height: 3px;
    background: var(--border-color);
    margin: 0 1rem;
    margin-bottom: 1.5rem;
    border-radius: 2px;
    transition: var(--transition-normal);
}

/* ========================================
   MAIN GRID & PANELS
======================================== */
.main-grid {
    display: grid;
    grid-template-columns: 1fr 1.6fr;
    gap: 2rem;
    margin-bottom: 3rem;
}

@media (max-width: 1200px) {
    .main-grid {
        grid-template-columns: 1fr;
    }
}

.panel {
    background: var(--card-bg);
    border-radius: var(--border-radius);
    box-shadow: var(--panel-shadow);
    overflow: hidden;
    border: 1px solid var(--border-color);
    transition: var(--transition-normal);
}

.panel:hover {
    box-shadow: var(--panel-shadow-hover);
}

.panel-header {
    background: var(--gradient-primary);
    color: white;
    padding: 1.25rem 1.5rem;
    display: flex;
    align-items: center;
    gap: 1rem;
    position: relative;
}

.panel-header h2 {
    font-family: 'Outfit', 'Space Grotesk', sans-serif;
    font-size: 1.4rem;
    flex: 1;
    font-weight: 700;
    letter-spacing: -0.02em;
}

.panel-badge {
    background: rgba(255, 255, 255, 0.2);
    padding: 0.25rem 0.75rem;
    border-radius: 50px;
    font-size: 0.75rem;
    font-weight: 500;
}

.form-section {
    padding: 1.5rem 2rem;
    border-bottom: 1px solid var(--border-color);
}

.form-section:last-child {
    border-bottom: none;
}

.input-row {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 1rem;
    margin-bottom: 1rem;
}

.input-row:last-child {
    margin-bottom: 0;
}

@media (max-width: 768px) {
    .input-row {
        grid-template-columns: 1fr;
    }
}

.input-group {
    margin-bottom: 1rem;
}

.input-group:last-child {
    margin-bottom: 0;
}

.input-group label {
    display: flex;
    align-items: center;
    gap: 0.5rem;
    margin-bottom: 0.5rem;
    font-weight: 600;
    color: var(--text-primary);
    font-size: 0.9rem;
}

.input-group label i {
    color: var(--primary);
}

.input-group input,
.input-group select,
.input-group textarea {
    width: 100%;
    padding: 12px 16px;
    border: 2px solid var(--border-color);
    border-radius: var(--border-radius-sm);
    font-size: 0.95rem;
    transition: var(--transition-normal);
    font-family: inherit;
    background: var(--bg-secondary);
    color: var(--text-primary);
}

.input-group input:focus,
.input-group select:focus,
.input-group textarea:focus {
    outline: none;
    border-color: var(--primary);
    box-shadow: 0 0 0 3px rgba(67, 97, 238, 0.1);
}

.input-hint {
    display: flex;
    align-items: center;
    gap: 0.3rem;
    margin-top: 0.5rem;
    font-size: 0.8rem;
    color: var(--text-tertiary);
}

/* ========================================
   TIME SLIDERS
======================================== */
.time-inputs {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 2rem;
    margin-bottom: 1.5rem;
}

@media (max-width: 768px) {
    .time-inputs {
        grid-template-columns: 1fr;
    }
}

.time-input {
    background: var(--bg-tertiary);
    padding: 1rem;
    border-radius: var(--border-radius-sm);
}

.time-input label {
    display: flex;
    align-items: center;
    gap: 0.5rem;
    margin-bottom: 0.75rem;
    font-weight: 600;
    font-size: 0.9rem;
}

.time-input label i {
    color: var(--primary);
}

.time-slider {
    display: flex;
    align-items: center;
    gap: 1rem;
}

.slider {
    flex: 1;
    height: 8px;
    -webkit-appearance: none;
    background: linear-gradient(to right, var(--primary-light), var(--primary));
    border-radius: 4px;
    outline: none;
}

.slider::-webkit-slider-thumb {
    -webkit-appearance: none;
    width: 22px;
    height: 22px;
    border-radius: 50%;
    background: white;
    cursor: pointer;
    border: 3px solid var(--primary);
    box-shadow: var(--shadow-md);
    transition: var(--transition-fast);
}

.slider::-webkit-slider-thumb:hover {
    transform: scale(1.1);
    box-shadow: var(--glow-primary);
}

#weekdayValue,
#weekendValue {
    min-width: 80px;
    text-align: center;
    font-weight: 600;
    color: var(--primary);
    font-size: 0.9rem;
}

/* ========================================
   TIME PREFERENCES
======================================== */
.time-preferences {
    display: grid;
    grid-template-columns: repeat(4, 1fr);
    gap: 0.5rem;
}

@media (max-width: 768px) {
    .time-preferences {
        grid-template-columns: repeat(2, 1fr);
    }
}

.time-btn {
    padding: 12px;
    border: 2px solid var(--border-color);
    background: var(--bg-secondary);
    border-radius: var(--border-radius-sm);
    cursor: pointer;
    transition: var(--transition-normal);
    font-weight: 500;
    font-size: 0.85rem;
    display: flex;
    flex-direction: column;
    align-items: center;
    gap: 0.3rem;
}

.time-btn:hover {
    border-color: var(--primary);
    background: rgba(67, 97, 238, 0.05);
    transform: translateY(-2px);
}

.time-btn.active {
    border-color: var(--primary);
    background: var(--gradient-primary);
    color: white;
    box-shadow: var(--glow-primary);
}

.time-btn i {
    font-size: 1.1rem;
}

/* ========================================
   SUBJECTS CONTAINER
======================================== */
.subjects-container {
    padding: 1.5rem 2rem;
    max-height: 500px;
    overflow-y: auto;
}

.subject-card {
    background: var(--bg-tertiary);
    border-radius: var(--border-radius-sm);
    padding: 1.25rem;
    margin-bottom: 1rem;
    border-left: 4px solid var(--primary);
    transition: var(--transition-normal);
}

.subject-card:hover {
    transform: translateX(4px);
    box-shadow: var(--shadow-md);
}

.subject-card:last-child {
    margin-bottom: 0;
}

.subject-header {
    display: flex;
    justify-content: space-between;
    align-items: center;
    margin-bottom: 1rem;
}

.subject-title {
    display: flex;
    align-items: center;
    gap: 0.75rem;
}

.subject-title h4 {
    font-family: 'Outfit', 'Space Grotesk', sans-serif;
    color: var(--primary);
    font-size: 1.1rem;
    font-weight: 700;
    letter-spacing: -0.01em;
}

.credits-badge {
    background: var(--gradient-primary);
    color: white;
    padding: 0.25rem 0.75rem;
    border-radius: 50px;
    font-size: 0.8rem;
    font-weight: 600;
}

.form-group {
    margin-bottom: 1rem;
}

.form-group:last-child {
    margin-bottom: 0;
}

.form-group > label {
    display: block;
    margin-bottom: 0.5rem;
    font-weight: 600;
    font-size: 0.9rem;
    color: var(--text-primary);
}

.confidence-slider {
    width: 100%;
    margin: 0.5rem 0;
}

.confidence-labels {
    display: flex;
    justify-content: space-between;
    font-size: 0.75rem;
    color: var(--text-tertiary);
    margin-top: 0.25rem;
}

.areas-input {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 1rem;
    margin-top: 1rem;
}

@media (max-width: 768px) {
    .areas-input {
        grid-template-columns: 1fr;
    }
}

.areas-input .input-group {
    margin-bottom: 0;
}

.cognitive-select {
    display: flex;
    gap: 0.5rem;
    margin-top: 0.75rem;
}

.cog-btn {
    flex: 1;
    padding: 8px 12px;
    border: 2px solid var(--border-color);
    background: var(--bg-secondary);
    border-radius: var(--border-radius-xs);
    cursor: pointer;
    font-size: 0.8rem;
    font-weight: 500;
    transition: var(--transition-fast);
    display: flex;
    align-items: center;
    justify-content: center;
    gap: 0.3rem;
}

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

.cog-btn.active {
    border-width: 2px;
}

.cog-low {
    color: var(--cog-low);
    border-color: var(--cog-low);
    background: rgba(16, 185, 129, 0.1);
}

.cog-low.active {
    background: var(--cog-low);
    color: white;
}

.cog-med {
    color: var(--cog-med);
    border-color: var(--cog-med);
    background: rgba(245, 158, 11, 0.1);
}

.cog-med.active {
    background: var(--cog-med);
    color: white;
}

.cog-high {
    color: var(--cog-high);
    border-color: var(--cog-high);
    background: rgba(239, 68, 68, 0.1);
}

.cog-high.active {
    background: var(--cog-high);
    color: white;
}

/* ========================================
   GENERATE BUTTON
======================================== */
.generate-section {
    padding: 2rem;
    text-align: center;
    background: var(--bg-tertiary);
    border-top: 1px solid var(--border-color);
}

.btn-generate {
    background: var(--gradient-primary);
    color: white;
    border: none;
    padding: 1rem 2.5rem;
    border-radius: 50px;
    font-size: 1.1rem;
    font-weight: 600;
    cursor: pointer;
    display: inline-flex;
    align-items: center;
    gap: 0.75rem;
    transition: var(--transition-normal);
    box-shadow: var(--shadow-md);
}

.btn-generate:hover {
    transform: translateY(-3px);
    box-shadow: var(--glow-primary);
}

.btn-generate:active {
    transform: translateY(-1px);
}

.btn-generate:disabled {
    opacity: 0.7;
    cursor: not-allowed;
    transform: none;
}

.loading-dots {
    display: none;
    gap: 4px;
}

.loading-dots span {
    width: 8px;
    height: 8px;
    background: white;
    border-radius: 50%;
    animation: bounce 1.4s infinite ease-in-out both;
}

.loading-dots span:nth-child(1) { animation-delay: -0.32s; }
.loading-dots span:nth-child(2) { animation-delay: -0.16s; }

@keyframes bounce {
    0%, 80%, 100% { transform: scale(0); }
    40% { transform: scale(1); }
}

.tip {
    margin-top: 1rem;
    color: var(--text-tertiary);
    font-size: 0.85rem;
    display: flex;
    align-items: center;
    justify-content: center;
    gap: 0.5rem;
}

.tip i {
    color: var(--warning);
}

/* ========================================
   OUTPUT PANEL
======================================== */
.output-placeholder {
    padding: 4rem 2rem;
    text-align: center;
    color: var(--text-tertiary);
}

.placeholder-content {
    max-width: 500px;
    margin: 0 auto;
}

.placeholder-icon {
    width: 80px;
    height: 80px;
    background: var(--gradient-primary);
    border-radius: 50%;
    display: flex;
    align-items: center;
    justify-content: center;
    margin: 0 auto 1.5rem;
    color: white;
    font-size: 2rem;
    box-shadow: var(--glow-primary);
    animation: float 3s ease-in-out infinite;
}

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

.placeholder-content h3 {
    font-family: 'Outfit', 'Space Grotesk', sans-serif;
    color: var(--text-primary);
    margin-bottom: 1rem;
    font-size: 1.5rem;
    font-weight: 700;
    letter-spacing: -0.02em;
}

.placeholder-content > p {
    margin-bottom: 1.5rem;
}

.features-list {
    text-align: left;
    margin: 1.5rem 0;
}

.feature-item {
    display: flex;
    align-items: center;
    gap: 0.75rem;
    padding: 0.5rem 0;
    color: var(--text-secondary);
}

.feature-item i {
    color: var(--success);
    font-size: 1rem;
}

.sample-badge {
    display: inline-flex;
    align-items: center;
    gap: 0.5rem;
    background: rgba(67, 97, 238, 0.1);
    color: var(--primary);
    padding: 0.75rem 1.5rem;
    border-radius: 50px;
    font-size: 0.85rem;
    font-weight: 500;
    margin-top: 1rem;
}

/* Schedule Tabs */
.schedule-tabs {
    display: flex;
    gap: 0.5rem;
    padding: 1rem 1.5rem;
    background: var(--bg-tertiary);
    border-bottom: 1px solid var(--border-color);
}

.tab-btn {
    padding: 0.5rem 1rem;
    border: none;
    background: transparent;
    color: var(--text-tertiary);
    font-weight: 500;
    cursor: pointer;
    border-radius: var(--border-radius-xs);
    transition: var(--transition-fast);
    display: flex;
    align-items: center;
    gap: 0.5rem;
    font-size: 0.9rem;
}

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

.tab-btn.active {
    background: var(--primary);
    color: white;
}

.schedule-view {
    display: none;
    padding: 1.5rem;
}

.schedule-view.active {
    display: block;
}

/* Weekly Schedule Grid */
.schedule-grid {
    display: grid;
    grid-template-columns: repeat(7, 1fr);
    gap: 0.75rem;
}

@media (max-width: 1200px) {
    .schedule-grid {
        grid-template-columns: repeat(4, 1fr);
    }
}

@media (max-width: 768px) {
    .schedule-grid {
        grid-template-columns: 1fr;
    }
}

.day-column {
    background: var(--bg-tertiary);
    border-radius: var(--border-radius-sm);
    overflow: hidden;
    min-height: 300px;
}

.day-header {
    background: var(--gradient-primary);
    color: white;
    padding: 0.75rem;
    text-align: center;
    font-weight: 600;
    font-size: 0.9rem;
}

.day-column .study-slot {
    padding: 0.75rem;
    margin: 0.5rem;
    border-radius: var(--border-radius-xs);
    cursor: pointer;
    transition: var(--transition-fast);
    border-left: 3px solid;
}

.day-column .study-slot:hover {
    transform: translateX(4px);
    box-shadow: var(--shadow-md);
}

.slot-high {
    background: rgba(239, 68, 68, 0.1);
    border-color: var(--cog-high);
}

.slot-medium {
    background: rgba(245, 158, 11, 0.1);
    border-color: var(--cog-med);
}

.slot-low {
    background: rgba(16, 185, 129, 0.1);
    border-color: var(--cog-low);
}

.slot-buffer {
    background: rgba(107, 114, 128, 0.1);
    border-color: #6b7280;
}

.slot-time {
    font-size: 0.75rem;
    color: var(--text-tertiary);
    margin-bottom: 0.25rem;
    display: flex;
    align-items: center;
    gap: 0.25rem;
}

.slot-topic {
    font-weight: 600;
    font-size: 0.9rem;
    color: var(--text-primary);
    margin-bottom: 0.25rem;
}

.slot-type {
    display: inline-block;
    font-size: 0.7rem;
    padding: 0.2rem 0.5rem;
    border-radius: 50px;
    font-weight: 500;
}

.slot-type.type-concept-learning {
    background: rgba(239, 68, 68, 0.2);
    color: var(--cog-high);
}

.slot-type.type-revision {
    background: rgba(16, 185, 129, 0.2);
    color: var(--cog-low);
}

.slot-type.type-practice {
    background: rgba(67, 97, 238, 0.2);
    color: var(--primary);
}

.slot-type.type-buffer {
    background: rgba(107, 114, 128, 0.2);
    color: #6b7280;
}

/* Week Navigation */
.week-nav {
    display: flex;
    align-items: center;
    gap: 0.5rem;
}

#weekTitle {
    background: rgba(255, 255, 255, 0.2);
    padding: 0.25rem 0.75rem;
    border-radius: 50px;
    font-size: 0.85rem;
}

/* Week Progress */
.week-progress {
    display: flex;
    justify-content: space-between;
    align-items: center;
    padding: 1rem 1.5rem;
    background: var(--bg-tertiary);
    border-top: 1px solid var(--border-color);
    flex-wrap: wrap;
    gap: 1rem;
}

.progress-info {
    display: flex;
    align-items: center;
    gap: 1rem;
    flex: 1;
}

.progress-info span {
    font-weight: 500;
    color: var(--text-secondary);
    font-size: 0.9rem;
}

.progress-info .progress-bar {
    flex: 1;
    max-width: 200px;
    height: 8px;
    background: var(--border-color);
    border-radius: 4px;
    overflow: hidden;
}

.progress-info .progress-fill {
    height: 100%;
    background: var(--gradient-primary);
    border-radius: 4px;
    transition: var(--transition-normal);
}

.week-navigation {
    display: flex;
    gap: 0.5rem;
}

.btn-nav {
    padding: 0.5rem 1rem;
    border: 1px solid var(--border-color);
    background: var(--bg-secondary);
    color: var(--text-primary);
    border-radius: var(--border-radius-xs);
    cursor: pointer;
    font-size: 0.85rem;
    font-weight: 500;
    transition: var(--transition-fast);
}

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

/* ========================================
   BREAKDOWN SECTION
======================================== */
.breakdown-section {
    padding: 1.5rem;
    border-top: 1px solid var(--border-color);
}

.breakdown-section h3,
.chart-section h3,
.insights-section h3,
.nextsteps-section h3,
.confidence-check-section h3,
.outcomes-section h3 {
    display: flex;
    align-items: center;
    gap: 0.5rem;
    margin-bottom: 1rem;
    color: var(--text-primary);
    font-size: 1.1rem;
}

.breakdown-section h3 i,
.chart-section h3 i,
.insights-section h3 i,
.nextsteps-section h3 i,
.confidence-check-section h3 i,
.outcomes-section h3 i {
    color: var(--primary);
}

.breakdown-chart {
    display: flex;
    flex-direction: column;
    gap: 1rem;
}

.breakdown-item {
    background: var(--bg-tertiary);
    padding: 1rem;
    border-radius: var(--border-radius-sm);
}

.breakdown-item > div:first-child {
    display: flex;
    justify-content: space-between;
    margin-bottom: 0.5rem;
}

.breakdown-item span:first-child {
    font-weight: 600;
    color: var(--text-primary);
}

.breakdown-item span:last-child {
    color: var(--primary);
    font-weight: 700;
}

.progress-bar {
    height: 10px;
    background: var(--border-color);
    border-radius: 5px;
    overflow: hidden;
}

.progress-fill {
    height: 100%;
    background: var(--gradient-primary);
    border-radius: 5px;
    transition: var(--transition-normal);
}

.breakdown-item .justification {
    font-size: 0.85rem;
    color: var(--text-tertiary);
    margin-top: 0.5rem;
    padding: 0.5rem;
    background: rgba(67, 97, 238, 0.05);
    border-radius: var(--border-radius-xs);
    display: flex;
    align-items: flex-start;
    gap: 0.5rem;
}

.breakdown-item .justification i {
    color: var(--primary);
    margin-top: 2px;
}

/* Cognitive Chart */
.chart-section {
    padding: 1.5rem;
    border-top: 1px solid var(--border-color);
}

.cognitive-chart {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(150px, 1fr));
    gap: 1rem;
}

.cognitive-item {
    background: var(--bg-tertiary);
    padding: 1rem;
    border-radius: var(--border-radius-sm);
    text-align: center;
}

.cognitive-item .hours {
    font-size: 1.5rem;
    font-weight: 700;
    color: var(--primary);
}

.cognitive-item .label {
    font-size: 0.85rem;
    color: var(--text-tertiary);
    margin-top: 0.25rem;
}

.cognitive-item .bar {
    height: 6px;
    background: var(--border-color);
    border-radius: 3px;
    margin-top: 0.75rem;
    overflow: hidden;
}

.cognitive-item .bar-fill {
    height: 100%;
    border-radius: 3px;
    transition: var(--transition-normal);
}

.cognitive-item.high .bar-fill { background: var(--cog-high); }
.cognitive-item.medium .bar-fill { background: var(--cog-med); }
.cognitive-item.low .bar-fill { background: var(--cog-low); }

/* ========================================
   INSIGHTS SECTION
======================================== */
.insights-section {
    padding: 1.5rem;
    border-top: 1px solid var(--border-color);
}

.insights-grid {
    display: grid;
    grid-template-columns: repeat(2, 1fr);
    gap: 1rem;
}

@media (max-width: 992px) {
    .insights-grid {
        grid-template-columns: 1fr;
    }
}

.insight-card {
    background: var(--bg-tertiary);
    border-radius: var(--border-radius-sm);
    padding: 1rem;
    border-left: 4px solid;
    overflow-wrap: break-word;
    word-wrap: break-word;
    max-width: 100%;
}

.insight-card.priority {
    border-color: var(--danger);
}

.insight-card.prerequisites {
    border-color: var(--warning);
}

.insight-card.adaptation {
    border-color: var(--success);
}

.insight-card.todolist {
    border-color: var(--primary);
}

.insight-header {
    display: flex;
    align-items: center;
    gap: 0.5rem;
    margin-bottom: 0.75rem;
}

.insight-header i {
    font-size: 1rem;
}

.insight-card.priority .insight-header i { color: var(--danger); }
.insight-card.prerequisites .insight-header i { color: var(--warning); }
.insight-card.adaptation .insight-header i { color: var(--success); }
.insight-card.todolist .insight-header i { color: var(--primary); }

.insight-header h4 {
    font-family: 'Outfit', 'Space Grotesk', sans-serif;
    font-size: 1rem;
    font-weight: 700;
    color: var(--text-primary);
    letter-spacing: -0.01em;
}

.action-item {
    display: flex;
    flex-direction: column;
    gap: 0.5rem;
    padding: 0.75rem;
    background: var(--bg-secondary);
    border-radius: var(--border-radius-xs);
    margin-bottom: 0.5rem;
    word-wrap: break-word;
    overflow-wrap: break-word;
    max-width: 100%;
    white-space: pre-wrap;
}

.action-item:last-child {
    margin-bottom: 0;
}

.action-icon {
    width: 32px;
    height: 32px;
    border-radius: 50%;
    display: flex;
    align-items: center;
    justify-content: center;
    flex-shrink: 0;
}

.action-icon.icon-danger {
    background: rgba(239, 68, 68, 0.1);
    color: var(--danger);
}

.action-icon.icon-warning {
    background: rgba(245, 158, 11, 0.1);
    color: var(--warning);
}

.action-icon.icon-success {
    background: rgba(16, 185, 129, 0.1);
    color: var(--success);
}

.action-icon i {
    font-size: 0.85rem;
}

.action-item strong {
    display: block;
    color: var(--text-primary);
    font-size: 0.9rem;
    margin-bottom: 0.25rem;
    word-wrap: break-word;
    overflow-wrap: break-word;
    white-space: pre-wrap;
}

.action-item div:last-child {
    font-size: 0.85rem;
    color: var(--text-tertiary);
    word-wrap: break-word;
    overflow-wrap: break-word;
    max-width: 100%;
    white-space: pre-wrap;
}

/* ========================================
   NEXT STEPS SECTION
======================================== */
.nextsteps-section {
    padding: 1.5rem;
    border-top: 1px solid var(--border-color);
}

.next-steps-list {
    display: grid;
    gap: 0.75rem;
}

.next-step-item {
    display: flex;
    align-items: flex-start;
    gap: 1rem;
    padding: 1rem;
    background: var(--bg-tertiary);
    border-radius: var(--border-radius-sm);
    border-left: 4px solid var(--primary);
}

.next-step-item .step-day {
    background: var(--primary);
    color: white;
    padding: 0.25rem 0.5rem;
    border-radius: var(--border-radius-xs);
    font-size: 0.75rem;
    font-weight: 600;
}

.next-step-item .step-content {
    flex: 1;
}

.next-step-item .step-topic {
    font-weight: 600;
    color: var(--text-primary);
    margin-bottom: 0.25rem;
}

.next-step-item .step-reason {
    font-size: 0.85rem;
    color: var(--text-tertiary);
}

/* ========================================
   CONFIDENCE CHECK SECTION
======================================== */
.confidence-check-section {
    padding: 1.5rem;
    border-top: 1px solid var(--border-color);
}

.confidence-check {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(200px, 1fr));
    gap: 1rem;
}

.confidence-item {
    background: var(--bg-tertiary);
    padding: 1rem;
    border-radius: var(--border-radius-sm);
    text-align: center;
}

.confidence-item .subject {
    font-weight: 600;
    color: var(--text-primary);
    margin-bottom: 0.5rem;
}

.confidence-item .level {
    display: flex;
    justify-content: center;
    gap: 0.25rem;
    margin-bottom: 0.5rem;
}

.confidence-item .level i {
    font-size: 1rem;
}

.confidence-item .level .fas {
    color: var(--primary);
}

.confidence-item .level .far {
    color: var(--border-color);
}

.confidence-item .improvement {
    font-size: 0.85rem;
    color: var(--success);
    font-weight: 500;
}

/* ========================================
   OUTCOMES SECTION
======================================== */
.outcomes-section {
    padding: 1.5rem;
    border-top: 1px solid var(--border-color);
}

.outcome-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(150px, 1fr));
    gap: 1rem;
    margin-bottom: 1.5rem;
}

.outcome-card {
    background: var(--bg-tertiary);
    padding: 1.5rem;
    border-radius: var(--border-radius-sm);
    text-align: center;
}

.outcome-card i {
    font-size: 2rem;
    margin-bottom: 0.75rem;
    background: var(--gradient-primary);
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
    background-clip: text;
}

.outcome-card .outcome-value {
    font-size: 2rem;
    font-weight: 700;
    color: var(--primary);
    margin-bottom: 0.25rem;
}

.outcome-card p {
    font-size: 0.85rem;
    color: var(--text-tertiary);
}

.confidence-improvements {
    margin-top: 1.5rem;
}

.confidence-improvements h4 {
    margin-bottom: 1rem;
    color: var(--text-primary);
}

.improvement-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(200px, 1fr));
    gap: 1rem;
}

.improvement-item {
    background: var(--bg-tertiary);
    padding: 1rem;
    border-radius: var(--border-radius-sm);
    border-left: 4px solid var(--success);
}

.improvement-item .subject {
    font-weight: 600;
    color: var(--text-primary);
    margin-bottom: 0.5rem;
}

.improvement-item .levels {
    display: flex;
    align-items: center;
    gap: 0.5rem;
}

.improvement-item .current {
    color: var(--text-tertiary);
    font-size: 0.9rem;
}

.improvement-item .arrow {
    color: var(--primary);
}

.improvement-item .target {
    font-weight: 700;
    color: var(--success);
    font-size: 1.1rem;
}

.key-benefits {
    margin-top: 1.5rem;
    padding: 1.5rem;
    background: var(--gradient-primary);
    border-radius: var(--border-radius-sm);
}

.key-benefits h4 {
    color: white;
    margin-bottom: 1rem;
    display: flex;
    align-items: center;
    gap: 0.5rem;
}

.benefits-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(200px, 1fr));
    gap: 1rem;
}

.benefit-item {
    background: rgba(255, 255, 255, 0.1);
    padding: 1rem;
    border-radius: var(--border-radius-xs);
    backdrop-filter: blur(10px);
}

.benefit-item i {
    color: white;
    font-size: 1.2rem;
    margin-bottom: 0.5rem;
}

.benefit-item strong {
    color: white;
    display: block;
    margin-bottom: 0.25rem;
}

.benefit-item p {
    color: rgba(255, 255, 255, 0.8);
    font-size: 0.85rem;
}

/* ========================================
   EXPORT SECTION
======================================== */
.export-section {
    display: flex;
    flex-wrap: wrap;
    gap: 0.75rem;
    padding: 1.5rem;
    background: var(--bg-tertiary);
    border-top: 1px solid var(--border-color);
}

.btn-export {
    padding: 0.75rem 1.25rem;
    border: 2px solid var(--border-color);
    background: var(--bg-secondary);
    color: var(--text-primary);
    border-radius: var(--border-radius-sm);
    cursor: pointer;
    font-weight: 500;
    font-size: 0.9rem;
    display: flex;
    align-items: center;
    gap: 0.5rem;
    transition: var(--transition-fast);
    flex: 1;
    justify-content: center;
    min-width: 150px;
}

.btn-export:hover {
    border-color: var(--primary);
    background: rgba(67, 97, 238, 0.1);
    color: var(--primary);
    transform: translateY(-2px);
}

.btn-export i {
    font-size: 1rem;
}

/* ========================================
   FOOTER
======================================== */
.footer {
    background: var(--card-bg);
    border-radius: var(--border-radius);
    padding: 2rem;
    margin-top: 2rem;
    border: 1px solid var(--border-color);
}

.footer-content {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(200px, 1fr));
    gap: 2rem;
    margin-bottom: 2rem;
}

.footer-section h4 {
    font-family: 'Outfit', 'Space Grotesk', sans-serif;
    display: flex;
    align-items: center;
    gap: 0.5rem;
    margin-bottom: 1rem;
    color: var(--text-primary);
    font-size: 1.1rem;
    font-weight: 700;
    letter-spacing: -0.01em;
}

.footer-section h4 i {
    color: var(--primary);
}

.footer-section p {
    color: var(--text-tertiary);
    font-size: 0.9rem;
    margin-bottom: 0.5rem;
}

.footer-section ul {
    list-style: none;
}

.footer-section ul li {
    padding: 0.25rem 0;
    color: var(--text-tertiary);
    font-size: 0.85rem;
    display: flex;
    align-items: center;
    gap: 0.5rem;
}

.footer-section ul li i {
    color: var(--primary);
    font-size: 0.8rem;
}

.footer-section ul li a {
    color: var(--text-tertiary);
    text-decoration: none;
    transition: var(--transition-fast);
}

.footer-section ul li a:hover {
    color: var(--primary);
}

.criteria {
    display: flex;
    flex-wrap: wrap;
    gap: 0.5rem;
}

.criteria-badge {
    padding: 0.25rem 0.75rem;
    border-radius: 50px;
    font-size: 0.75rem;
    font-weight: 500;
}

.criteria-badge.impact { background: rgba(67, 97, 238, 0.1); color: var(--primary); }
.criteria-badge.innovation { background: rgba(247, 37, 133, 0.1); color: var(--accent); }
.criteria-badge.technical { background: rgba(6, 214, 160, 0.1); color: var(--success); }
.criteria-badge.ux { background: rgba(245, 158, 11, 0.1); color: var(--warning); }
.criteria-badge.presentation { background: rgba(76, 201, 240, 0.1); color: var(--secondary); }

.timestamp {
    margin-top: 1rem;
    font-family: 'JetBrains Mono', monospace;
    font-size: 0.8rem;
}

.footer-bottom {
    text-align: center;
    padding-top: 1.5rem;
    border-top: 1px solid var(--border-color);
}

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

.footer-bottom a {
    color: var(--primary);
    text-decoration: none;
}

/* ========================================
   AI ASSISTANT
======================================== */
.ai-assistant {
    position: fixed;
    bottom: 30px;
    right: 30px;
    z-index: 1000;
}

.ai-toggle {
    width: 60px;
    height: 60px;
    border-radius: 50%;
    border: none;
    background: var(--gradient-primary);
    color: white;
    font-size: 1.5rem;
    cursor: pointer;
    box-shadow: var(--glow-primary);
    transition: var(--transition-normal);
    position: relative;
}

.ai-toggle:hover {
    transform: scale(1.1);
}

.ai-pulse {
    position: absolute;
    top: -5px;
    right: -5px;
    width: 20px;
    height: 20px;
    background: var(--success);
    border-radius: 50%;
    animation: pulse 2s infinite;
}

@keyframes pulse {
    0% { transform: scale(1); opacity: 1; }
    100% { transform: scale(1.5); opacity: 0; }
}

.ai-chatbox {
    position: absolute;
    bottom: 70px;
    right: 0;
    width: 380px;
    max-width: calc(100vw - 60px);
    background: var(--card-bg);
    border-radius: var(--border-radius);
    box-shadow: var(--panel-shadow);
    border: 1px solid var(--border-color);
    display: none;
    flex-direction: column;
    overflow: hidden;
}

.ai-chatbox.active {
    display: flex;
}

.ai-header {
    background: var(--gradient-primary);
    color: white;
    padding: 1rem;
    display: flex;
    justify-content: space-between;
    align-items: center;
}

.ai-title {
    display: flex;
    align-items: center;
    gap: 0.5rem;
}

.ai-title h3 {
    font-family: 'Outfit', 'Space Grotesk', sans-serif;
    font-size: 1.1rem;
    font-weight: 700;
}

.ai-close {
    background: rgba(255, 255, 255, 0.2);
    border: none;
    color: white;
    width: 32px;
    height: 32px;
    border-radius: 50%;
    cursor: pointer;
    display: flex;
    align-items: center;
    justify-content: center;
}

.ai-messages {
    flex: 1;
    padding: 1rem;
    max-height: 400px;
    overflow-y: auto;
}

.ai-message {
    display: flex;
    gap: 0.75rem;
    margin-bottom: 1rem;
}

.ai-message .avatar {
    width: 36px;
    height: 36px;
    border-radius: 50%;
    background: var(--bg-tertiary);
    display: flex;
    align-items: center;
    justify-content: center;
    flex-shrink: 0;
}

.ai-bot .avatar {
    background: var(--primary);
    color: white;
}

.ai-user .avatar {
    background: var(--success);
    color: white;
}

.ai-message .message-content {
    flex: 1;
    background: var(--bg-tertiary);
    padding: 0.75rem;
    border-radius: var(--border-radius-sm);
}

.ai-message.ai-user .message-content {
    background: rgba(67, 97, 238, 0.1);
}

.ai-message .message-content p {
    font-size: 0.9rem;
    color: var(--text-primary);
    margin-bottom: 0.5rem;
}

.ai-message .message-content p:last-child {
    margin-bottom: 0;
}

.ai-message .message-content ul {
    margin: 0.5rem 0;
    padding-left: 1.5rem;
}

.ai-message .message-content ul li {
    font-size: 0.85rem;
    color: var(--text-secondary);
    margin-bottom: 0.25rem;
}

.ai-input {
    display: flex;
    gap: 0.5rem;
    padding: 1rem;
    border-top: 1px solid var(--border-color);
}

.ai-input input {
    flex: 1;
    padding: 12px 16px;
    border: 2px solid var(--border-color);
    border-radius: 50px;
    font-size: 0.9rem;
    background: var(--bg-secondary);
    color: var(--text-primary);
}

.ai-input input:focus {
    outline: none;
    border-color: var(--primary);
}

.ai-input button {
    width: 44px;
    height: 44px;
    border-radius: 50%;
    border: none;
    background: var(--primary);
    color: white;
    cursor: pointer;
    display: flex;
    align-items: center;
    justify-content: center;
}

.ai-footer {
    padding: 0.5rem 1rem;
    background: var(--bg-tertiary);
    text-align: center;
}

.ai-footer small {
    font-size: 0.75rem;
    color: var(--text-tertiary);
}

.typing {
    display: flex;
    gap: 4px;
}

.typing span {
    width: 8px;
    height: 8px;
    background: var(--primary);
    border-radius: 50%;
    animation: bounce 1.4s infinite ease-in-out both;
}

.typing span:nth-child(1) { animation-delay: -0.32s; }
.typing span:nth-child(2) { animation-delay: -0.16s; }

/* ========================================
   MODAL
======================================== */
.modal {
    position: fixed;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    background: rgba(0, 0, 0, 0.5);
    display: none;
    align-items: center;
    justify-content: center;
    z-index: 10000;
    backdrop-filter: blur(5px);
}

.modal.active {
    display: flex;
}

.modal-content {
    background: var(--card-bg);
    border-radius: var(--border-radius);
    width: 90%;
    max-width: 500px;
    box-shadow: var(--panel-shadow);
    overflow: hidden;
}

.modal-header {
    background: var(--gradient-primary);
    color: white;
    padding: 1rem 1.5rem;
    display: flex;
    justify-content: space-between;
    align-items: center;
}

.modal-header h3 {
    display: flex;
    align-items: center;
    gap: 0.5rem;
}

.modal-close {
    background: rgba(255, 255, 255, 0.2);
    border: none;
    color: white;
    width: 32px;
    height: 32px;
    border-radius: 50%;
    cursor: pointer;
    font-size: 1.2rem;
}

.modal-body {
    padding: 1.5rem;
}

.modal-body p {
    margin-bottom: 1rem;
    color: var(--text-secondary);
}

.modal-body a {
    color: var(--primary);
}

.api-input {
    display: flex;
    gap: 0.5rem;
}

.api-input input {
    flex: 1;
    padding: 12px 16px;
    border: 2px solid var(--border-color);
    border-radius: var(--border-radius-sm);
    font-size: 0.9rem;
    background: var(--bg-secondary);
    color: var(--text-primary);
}

.api-input input:focus {
    outline: none;
    border-color: var(--primary);
}

.api-input button {
    padding: 12px 24px;
    border: none;
    background: var(--primary);
    color: white;
    border-radius: var(--border-radius-sm);
    cursor: pointer;
    font-weight: 500;
}

.api-info {
    margin-top: 1rem;
    padding: 1rem;
    background: var(--bg-tertiary);
    border-radius: var(--border-radius-sm);
}

.api-info p {
    margin-bottom: 0.5rem;
    font-size: 0.85rem;
    display: flex;
    align-items: center;
    gap: 0.5rem;
}

.api-info p:last-child {
    margin-bottom: 0;
}

.api-info i {
    color: var(--primary);
}

/* ========================================
   UTILITY CLASSES
======================================== */
.hidden {
    display: none !important;
}

/* ========================================
   RESPONSIVE STYLES
======================================== */
@media (max-width: 992px) {
    .hero {
        grid-template-columns: 1fr;
        text-align: center;
    }
    
    .hero-visual {
        order: -1;
    }
    
    .schedule-preview {
        max-width: 100%;
    }
    
    .stats {
        justify-content: center;
    }
}

@media (max-width: 768px) {
    body {
        padding: 10px;
    }
    
    .header {
        flex-direction: column;
        text-align: center;
    }
    
    .hackathon-badge {
        align-items: center;
    }
    
    .hero {
        padding: 2rem;
    }
    
    .hero h2 {
        font-size: 1.5rem;
    }
    
    .stats {
        flex-direction: column;
        align-items: center;
    }
    
    .form-section {
        padding: 1rem 1.5rem;
    }
    
    .subjects-container {
        padding: 1rem 1.5rem;
    }
    
    .progress-tracker {
        flex-wrap: wrap;
        gap: 1rem;
    }
    
    .progress-line {
        display: none;
    }
    
    .ai-chatbox {
        width: calc(100vw - 20px);
        right: -10px;
    }
}

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

@keyframes slideIn {
    from { opacity: 0; transform: translateX(-20px); }
    to { opacity: 1; transform: translateX(0); }
}

@keyframes scaleIn {
    from { opacity: 0; transform: scale(0.9); }
    to { opacity: 1; transform: scale(1); }
}

.fade-in {
    animation: fadeIn 0.5s ease forwards;
}

.slide-in {
    animation: slideIn 0.5s ease forwards;
}

.scale-in {
    animation: scaleIn 0.3s ease forwards;
}

/* ========================================
   PRINT STYLES
======================================== */
@media print {
    .theme-toggle,
    .ai-assistant,
    .export-section,
    .footer-bottom,
    .generate-section {
        display: none !important;
    }
    
    .hero,
    .progress-tracker {
        display: none;
    }
    
    body {
        background: white;
        color: black;
    }
    
    .panel {
        box-shadow: none;
        border: 1px solid #ccc;
    }
}