/* TCG Investor Pro - Main Stylesheet */

/* CSS Reset and Base Styles */
* {
    margin: 0;
    padding: 0;
    box-sizing: border-box;
}

:root {
    /* TCG Investor Pro - Dark Theme Only */
    
    /* Primary Color Palette */
    --primary-color: #8B5CF6;
    --primary-dark: #7C3AED;
    --primary-light: #A78BFA;
    --secondary-color: #06B6D4;
    --secondary-dark: #0891B2;
    --accent-color: #F59E0B;
    --accent-light: #FCD34D;
    
    /* Status Colors */
    --success-color: #10B981;
    --success-light: #34D399;
    --warning-color: #F59E0B;
    --warning-light: #FCD34D;
    --error-color: #EF4444;
    --error-light: #F87171;
    
    /* Neutral Colors */
    --white: #FFFFFF;
    --black: #000000;
    --gray-50: #F9FAFB;
    --gray-100: #F3F4F6;
    --gray-200: #E5E7EB;
    --gray-300: #D1D5DB;
    --gray-400: #9CA3AF;
    --gray-500: #6B7280;
    --gray-600: #4B5563;
    --gray-700: #374151;
    --gray-800: #1F2937;
    --gray-900: #111827;
    
    /* Background Colors - Dark Theme */
    --bg-primary: #0A0A0B;
    --bg-secondary: #111113;
    --bg-tertiary: #1A1A1D;
    --bg-card: #16161A;
    --bg-hover: #1F1F23;
    
    /* Text Colors - Dark Theme */
    --text-primary: #FFFFFF;
    --text-secondary: #A1A1AA;
    --text-muted: #71717A;
    --text-accent: var(--primary-color);
    
    /* Glow and Border Colors */
    --border-color: #27272A;
    --border-hover: #3F3F46;
    --glow-primary: rgba(139, 92, 246, 0.3);
    --glow-secondary: rgba(6, 182, 212, 0.3);
    --glow-success: rgba(16, 185, 129, 0.3);
    --glow-error: rgba(239, 68, 68, 0.3);
    
    /* Enhanced Shadows for Dark Theme */
    --shadow-sm: 0 1px 2px 0 rgb(0 0 0 / 0.3);
    --shadow-md: 0 4px 6px -1px rgb(0 0 0 / 0.4), 0 2px 4px -2px rgb(0 0 0 / 0.3);
    --shadow-lg: 0 10px 15px -3px rgb(0 0 0 / 0.5), 0 4px 6px -4px rgb(0 0 0 / 0.4);
    --shadow-xl: 0 20px 25px -5px rgb(0 0 0 / 0.6), 0 10px 10px -5px rgb(0 0 0 / 0.3);
    --shadow-glow: 0 0 20px var(--glow-primary);
    --shadow-glow-secondary: 0 0 20px var(--glow-secondary);
    
    /* Spacing */
    --spacing-xs: 0.25rem;
    --spacing-sm: 0.5rem;
    --spacing-md: 1rem;
    --spacing-lg: 1.5rem;
    --spacing-xl: 2rem;
    --spacing-2xl: 3rem;
    
    /* Border Radius */
    --radius-sm: 0.25rem;
    --radius-md: 0.5rem;
    --radius-lg: 0.75rem;
    --radius-xl: 1rem;
    
    /* Typography */
    --font-family: 'Inter', -apple-system, BlinkMacSystemFont, 'Segoe UI', Roboto, sans-serif;
    --font-size-xs: 0.75rem;
    --font-size-sm: 0.875rem;
    --font-size-base: 1rem;
    --font-size-lg: 1.125rem;
    --font-size-xl: 1.25rem;
    --font-size-2xl: 1.5rem;
    --font-size-3xl: 1.875rem;
    --font-size-4xl: 2.25rem;
    
    /* Transitions */
    --transition-fast: 150ms ease-in-out;
    --transition-normal: 250ms ease-in-out;
    --transition-slow: 350ms ease-in-out;
}

/* Aurora Background Effect */
body::before {
    content: '';
    position: fixed;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    background: radial-gradient(600px circle at 40% 50%, rgba(139, 92, 246, 0.15), transparent 40%),
                radial-gradient(600px circle at 80% 20%, rgba(6, 182, 212, 0.15), transparent 40%),
                radial-gradient(600px circle at 0% 80%, rgba(16, 185, 129, 0.1), transparent 40%);
    pointer-events: none;
    z-index: -1;
    animation: aurora 20s ease-in-out infinite;
}

@keyframes aurora {
    0%, 100% {
        opacity: 0.5;
        transform: scale(1);
    }
    50% {
        opacity: 0.8;
        transform: scale(1.1);
    }
}

/* Pulse animation for glowing elements */
@keyframes pulse-glow {
    0%, 100% {
        box-shadow: 0 0 20px var(--glow-primary);
    }
    50% {
        box-shadow: 0 0 30px var(--glow-primary), 0 0 40px var(--glow-primary);
    }
}

/* Floating animation for cards */
@keyframes float {
    0%, 100% {
        transform: translateY(0px);
    }
    50% {
        transform: translateY(-5px);
    }
}

/* Gradient shift animation */
@keyframes gradient-shift {
    0%, 100% {
        background-position: 0% 50%;
    }
    50% {
        background-position: 100% 50%;
    }
}

/* Base Typography */
body {
    font-family: var(--font-family);
    font-size: var(--font-size-base);
    line-height: 1.6;
    color: var(--text-primary);
    background-color: var(--bg-primary);
    transition: background-color var(--transition-normal), color var(--transition-normal);
    position: relative;
}

/* Headings */
h1, h2, h3, h4, h5, h6 {
    font-weight: 600;
    line-height: 1.3;
    color: var(--text-primary);
    margin-bottom: var(--spacing-md);
}

h1 { font-size: var(--font-size-4xl); }
h2 { font-size: var(--font-size-3xl); }
h3 { font-size: var(--font-size-2xl); }
h4 { font-size: var(--font-size-xl); }
h5 { font-size: var(--font-size-lg); }
h6 { font-size: var(--font-size-base); }

/* Paragraphs */
p {
    margin-bottom: var(--spacing-md);
    color: var(--text-secondary);
}

/* Links */
a {
    color: var(--primary-color);
    text-decoration: none;
    transition: color var(--transition-fast);
}

a:hover {
    color: var(--primary-dark);
}

/* Header and Navigation */
.header {
    position: sticky;
    top: 0;
    z-index: 100;
    background-color: rgba(10, 10, 11, 0.8);
    border-bottom: 1px solid var(--border-color);
    backdrop-filter: blur(12px);
    box-shadow: var(--shadow-lg);
    transition: all var(--transition-normal);
}

.header::before {
    content: '';
    position: absolute;
    top: 0;
    left: 0;
    right: 0;
    bottom: 0;
    background: linear-gradient(90deg, 
        rgba(139, 92, 246, 0.1) 0%, 
        rgba(6, 182, 212, 0.1) 50%, 
        rgba(16, 185, 129, 0.1) 100%);
    opacity: 0;
    transition: opacity var(--transition-normal);
    pointer-events: none;
}

.header:hover::before {
    opacity: 1;
}

.nav {
    display: flex;
    align-items: center;
    justify-content: space-between;
    padding: var(--spacing-md) var(--spacing-lg);
    max-width: 1400px;
    margin: 0 auto;
}

.nav-brand {
    display: flex;
    align-items: center;
    gap: var(--spacing-sm);
}

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

.brand-name {
    font-size: var(--font-size-lg);
    font-weight: 700;
    color: var(--text-primary);
}

.nav-links {
    display: flex;
    list-style: none;
    gap: var(--spacing-lg);
}

.nav-link {
    padding: var(--spacing-sm) var(--spacing-md);
    border-radius: var(--radius-md);
    color: var(--text-secondary);
    font-weight: 500;
    transition: all var(--transition-fast);
    cursor: pointer;
}

.nav-link:hover,
.nav-link.active {
    color: var(--primary-color);
    background-color: var(--bg-secondary);
}

.nav-actions {
    display: flex;
    align-items: center;
    gap: var(--spacing-sm);
}

/* Buttons */
.btn-primary,
.btn-secondary,
.btn-outline {
    padding: var(--spacing-sm) var(--spacing-lg);
    border-radius: var(--radius-md);
    font-weight: 500;
    font-size: var(--font-size-sm);
    cursor: pointer;
    transition: all var(--transition-fast);
    border: none;
    display: inline-flex;
    align-items: center;
    gap: var(--spacing-xs);
    text-decoration: none;
    position: relative;
    overflow: hidden;
}

.btn-primary {
    background: linear-gradient(135deg, var(--primary-color), var(--secondary-color));
    background-size: 200% 200%;
    color: var(--white);
    box-shadow: 0 4px 15px var(--glow-primary);
    animation: gradient-shift 3s ease infinite;
}

.btn-primary::before {
    content: '';
    position: absolute;
    top: 0;
    left: -100%;
    width: 100%;
    height: 100%;
    background: linear-gradient(90deg, transparent, rgba(255, 255, 255, 0.2), transparent);
    transition: left 0.5s;
}

.btn-primary:hover::before {
    left: 100%;
}

.btn-primary:hover {
    transform: translateY(-2px);
    box-shadow: 0 8px 25px var(--glow-primary), var(--shadow-glow);
    background: linear-gradient(135deg, var(--primary-light), var(--secondary-color));
}

.btn-secondary {
    background-color: var(--bg-card);
    color: var(--text-primary);
    border: 1px solid var(--border-color);
    box-shadow: var(--shadow-sm);
}

.btn-secondary:hover {
    background-color: var(--bg-hover);
    border-color: var(--border-hover);
    box-shadow: var(--shadow-md);
    transform: translateY(-1px);
}

.btn-outline {
    background-color: transparent;
    color: var(--text-secondary);
    border: 1px solid var(--border-color);
    transition: all var(--transition-fast);
}

.btn-outline:hover {
    background-color: var(--bg-card);
    color: var(--text-primary);
    border-color: var(--primary-color);
    box-shadow: 0 0 20px var(--glow-primary);
    transform: translateY(-1px);
}

.btn-outline.active {
    background: linear-gradient(135deg, var(--primary-color), var(--secondary-color));
    color: var(--white);
    border-color: var(--primary-color);
    box-shadow: 0 4px 15px var(--glow-primary);
}


/* Main Content */
.main-content {
    max-width: 1400px;
    margin: 0 auto;
    padding: var(--spacing-xl) var(--spacing-lg);
}

/* Sections */
.section {
    display: none;
}

.section.active {
    display: block;
}

.section-header {
    text-align: center;
    margin-bottom: var(--spacing-2xl);
}

.section-header h2 {
    margin-bottom: var(--spacing-sm);
}

.section-header p {
    font-size: var(--font-size-lg);
    color: var(--text-secondary);
}

/* Stats Bar */
.stats-bar {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(250px, 1fr));
    gap: var(--spacing-lg);
    margin-bottom: var(--spacing-2xl);
}

.stat-card {
    background: linear-gradient(135deg, var(--bg-card), var(--bg-secondary));
    border: 1px solid var(--border-color);
    border-radius: var(--radius-xl);
    padding: var(--spacing-xl);
    display: flex;
    align-items: center;
    gap: var(--spacing-lg);
    transition: all var(--transition-normal);
    position: relative;
    overflow: hidden;
    backdrop-filter: blur(10px);
}

.stat-card::before {
    content: '';
    position: absolute;
    top: 0;
    left: 0;
    right: 0;
    bottom: 0;
    background: linear-gradient(135deg, 
        rgba(139, 92, 246, 0.1), 
        rgba(6, 182, 212, 0.1), 
        rgba(16, 185, 129, 0.1));
    opacity: 0;
    transition: opacity var(--transition-normal);
    pointer-events: none;
}

.stat-card:hover::before {
    opacity: 1;
}

.stat-card:hover {
    transform: translateY(-4px) scale(1.02);
    box-shadow: var(--shadow-xl), 0 0 30px rgba(139, 92, 246, 0.2);
    border-color: var(--primary-color);
}

.stat-icon {
    font-size: var(--font-size-3xl);
    width: 60px;
    height: 60px;
    display: flex;
    align-items: center;
    justify-content: center;
    background: linear-gradient(135deg, var(--primary-color), var(--secondary-color));
    border-radius: var(--radius-xl);
    box-shadow: 0 4px 15px var(--glow-primary);
    position: relative;
    z-index: 1;
    animation: pulse-glow 3s ease-in-out infinite;
}

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

.stat-value {
    font-size: var(--font-size-3xl);
    font-weight: 800;
    background: linear-gradient(135deg, var(--primary-color), var(--secondary-color));
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
    background-clip: text;
    margin-bottom: var(--spacing-xs);
    text-shadow: 0 0 20px rgba(139, 92, 246, 0.3);
}

.stat-label {
    font-size: var(--font-size-sm);
    color: var(--text-secondary);
    font-weight: 600;
    text-transform: uppercase;
    letter-spacing: 0.5px;
}

/* Search Section */
.search-section {
    margin-bottom: var(--spacing-2xl);
}

.search-header {
    text-align: center;
    margin-bottom: var(--spacing-xl);
}

.search-header h2 {
    margin-bottom: var(--spacing-sm);
}

.search-container {
    background-color: var(--bg-secondary);
    border: 1px solid var(--border-color);
    border-radius: var(--radius-xl);
    padding: var(--spacing-xl);
}

.search-input-group {
    display: flex;
    gap: var(--spacing-sm);
    margin-bottom: var(--spacing-lg);
}

.search-input {
    flex: 1;
    padding: var(--spacing-lg) var(--spacing-xl);
    border: 2px solid var(--border-color);
    border-radius: var(--radius-xl);
    font-size: var(--font-size-base);
    background: linear-gradient(135deg, var(--bg-card), var(--bg-secondary));
    color: var(--text-primary);
    transition: all var(--transition-normal);
    backdrop-filter: blur(10px);
    box-shadow: var(--shadow-sm);
}

.search-input:focus {
    outline: none;
    border-color: var(--primary-color);
    box-shadow: 0 0 0 4px var(--glow-primary), var(--shadow-glow);
    background: linear-gradient(135deg, var(--bg-primary), var(--bg-card));
    transform: translateY(-1px);
}

.search-btn {
    padding: var(--spacing-lg) var(--spacing-xl);
    background: linear-gradient(135deg, var(--primary-color), var(--secondary-color));
    color: var(--white);
    border: none;
    border-radius: var(--radius-xl);
    cursor: pointer;
    font-size: var(--font-size-lg);
    transition: all var(--transition-normal);
    box-shadow: 0 4px 15px var(--glow-primary);
    position: relative;
    overflow: hidden;
}

.search-btn::before {
    content: '';
    position: absolute;
    top: 0;
    left: -100%;
    width: 100%;
    height: 100%;
    background: linear-gradient(90deg, transparent, rgba(255, 255, 255, 0.2), transparent);
    transition: left 0.5s;
}

.search-btn:hover::before {
    left: 100%;
}

.search-btn:hover {
    transform: translateY(-2px);
    box-shadow: 0 8px 25px var(--glow-primary), var(--shadow-glow);
    background: linear-gradient(135deg, var(--primary-light), var(--secondary-color));
}

/* Filter Panel */
.filter-panel {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(200px, 1fr));
    gap: var(--spacing-lg);
    align-items: end;
}

.filter-group {
    display: flex;
    flex-direction: column;
    gap: var(--spacing-xs);
}

.filter-group label {
    font-size: var(--font-size-sm);
    font-weight: 500;
    color: var(--text-secondary);
}

.filter-group select,
.filter-group input {
    padding: var(--spacing-sm) var(--spacing-md);
    border: 1px solid var(--border-color);
    border-radius: var(--radius-md);
    background-color: var(--bg-primary);
    color: var(--text-primary);
    font-size: var(--font-size-sm);
}

.filter-group select:focus,
.filter-group input:focus {
    outline: none;
    border-color: var(--primary-color);
}

.range-inputs {
    display: flex;
    align-items: center;
    gap: var(--spacing-xs);
}

.range-inputs input {
    flex: 1;
    min-width: 80px;
}

.range-inputs span {
    color: var(--text-secondary);
    font-weight: 500;
}

.filter-apply,
.filter-clear {
    padding: var(--spacing-sm) var(--spacing-md);
    font-size: var(--font-size-sm);
}

/* Content Cards */
.content-card {
    background: linear-gradient(135deg, var(--bg-card), var(--bg-secondary));
    border: 1px solid var(--border-color);
    border-radius: var(--radius-xl);
    padding: var(--spacing-xl);
    margin-bottom: var(--spacing-xl);
    position: relative;
    overflow: hidden;
    backdrop-filter: blur(10px);
    transition: all var(--transition-normal);
}

.content-card::before {
    content: '';
    position: absolute;
    top: 0;
    left: 0;
    right: 0;
    bottom: 0;
    background: linear-gradient(135deg, 
        rgba(139, 92, 246, 0.05), 
        rgba(6, 182, 212, 0.05), 
        rgba(16, 185, 129, 0.05));
    opacity: 0;
    transition: opacity var(--transition-normal);
    pointer-events: none;
}

.content-card:hover::before {
    opacity: 1;
}

.content-card:hover {
    transform: translateY(-2px);
    box-shadow: var(--shadow-lg), 0 0 25px rgba(139, 92, 246, 0.1);
    border-color: var(--primary-color);
}

.card-header {
    display: flex;
    justify-content: space-between;
    align-items: center;
    margin-bottom: var(--spacing-lg);
}

.card-header h3 {
    margin-bottom: 0;
}

/* Featured Content */
.featured-content {
    margin-bottom: var(--spacing-2xl);
}

.content-grid {
    display: grid;
    grid-template-columns: 1fr;
    gap: var(--spacing-xl);
}

/* Sets Grid */
.sets-grid {
    display: grid;
    grid-template-columns: repeat(auto-fill, minmax(280px, 1fr));
    gap: var(--spacing-lg);
}

.set-card {
    background-color: var(--bg-primary);
    border: 1px solid var(--border-color);
    border-radius: var(--radius-lg);
    padding: var(--spacing-lg);
    text-align: center;
    transition: all var(--transition-fast);
    cursor: pointer;
}

.set-card:hover {
    transform: translateY(-2px);
    box-shadow: var(--shadow-md);
    border-color: var(--primary-color);
}

.set-image {
    width: 100%;
    height: 120px;
    background-color: var(--bg-tertiary);
    border-radius: var(--radius-md);
    margin-bottom: var(--spacing-md);
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: var(--font-size-3xl);
}

.set-name {
    font-weight: 600;
    margin-bottom: var(--spacing-xs);
}

.set-roi {
    color: var(--success-color);
    font-weight: 600;
}

/* Cards Grid */
.cards-grid {
    display: grid;
    grid-template-columns: repeat(auto-fill, minmax(280px, 1fr));
    gap: var(--spacing-xl);
}

.card-item {
    background: linear-gradient(135deg, var(--bg-card), var(--bg-secondary));
    border: 1px solid var(--border-color);
    border-radius: var(--radius-xl);
    overflow: hidden;
    transition: all var(--transition-normal);
    cursor: pointer;
    position: relative;
    backdrop-filter: blur(10px);
    animation: float 6s ease-in-out infinite;
}

.card-item:nth-child(even) {
    animation-delay: -2s;
}

.card-item:nth-child(3n) {
    animation-delay: -4s;
}

.card-item::before {
    content: '';
    position: absolute;
    top: 0;
    left: 0;
    right: 0;
    bottom: 0;
    background: linear-gradient(135deg, 
        rgba(139, 92, 246, 0.1), 
        rgba(6, 182, 212, 0.1), 
        rgba(16, 185, 129, 0.1));
    opacity: 0;
    transition: opacity var(--transition-normal);
    pointer-events: none;
    z-index: 1;
}

.card-item:hover::before {
    opacity: 1;
}

.card-item:hover {
    transform: translateY(-8px) rotateX(5deg);
    box-shadow: var(--shadow-xl), 0 0 30px rgba(139, 92, 246, 0.3);
    border-color: var(--primary-color);
}

.card-image {
    width: 100%;
    height: 220px;
    background: linear-gradient(135deg, var(--bg-tertiary), var(--bg-hover));
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: var(--font-size-4xl);
    position: relative;
    overflow: hidden;
}

.card-image::before {
    content: '';
    position: absolute;
    top: 0;
    left: 0;
    right: 0;
    bottom: 0;
    background: linear-gradient(45deg, 
        rgba(139, 92, 246, 0.2), 
        rgba(6, 182, 212, 0.2), 
        rgba(16, 185, 129, 0.2));
    opacity: 0;
    transition: opacity var(--transition-normal);
}

.card-item:hover .card-image::before {
    opacity: 1;
}

.card-image img {
    width: 100%;
    height: 100%;
    object-fit: cover;
    transition: transform var(--transition-normal);
}

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

.card-content {
    padding: var(--spacing-xl);
    position: relative;
    z-index: 2;
}

.card-name {
    font-weight: 700;
    margin-bottom: var(--spacing-xs);
    font-size: var(--font-size-base);
    color: var(--text-primary);
}

.card-set {
    color: var(--text-secondary);
    font-size: var(--font-size-sm);
    margin-bottom: var(--spacing-md);
    font-weight: 500;
}

.card-price {
    font-size: var(--font-size-xl);
    font-weight: 800;
    background: linear-gradient(135deg, var(--primary-color), var(--secondary-color));
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
    background-clip: text;
    margin-bottom: var(--spacing-xs);
    text-shadow: 0 0 20px rgba(139, 92, 246, 0.3);
}

.card-roi {
    font-size: var(--font-size-sm);
    color: var(--success-color);
    font-weight: 700;
    text-transform: uppercase;
    letter-spacing: 0.5px;
}

/* Trends Section */
.trends-section {
    margin-bottom: var(--spacing-2xl);
}

.trend-controls {
    display: flex;
    gap: var(--spacing-sm);
}

.trend-chart {
    background-color: var(--bg-primary);
    border: 1px solid var(--border-color);
    border-radius: var(--radius-lg);
    padding: var(--spacing-lg);
    margin-top: var(--spacing-lg);
}

/* Portfolio Styles */
.portfolio-content {
    display: flex;
    flex-direction: column;
    gap: var(--spacing-xl);
}

.portfolio-stats {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(200px, 1fr));
    gap: var(--spacing-lg);
}

.portfolio-actions {
    display: flex;
    gap: var(--spacing-md);
    flex-wrap: wrap;
}

.portfolio-table {
    background-color: var(--bg-secondary);
    border: 1px solid var(--border-color);
    border-radius: var(--radius-lg);
    overflow: hidden;
}

.portfolio-table table {
    width: 100%;
    border-collapse: collapse;
}

.portfolio-table th,
.portfolio-table td {
    padding: var(--spacing-md);
    text-align: left;
    border-bottom: 1px solid var(--border-color);
}

.portfolio-table th {
    background-color: var(--bg-tertiary);
    font-weight: 600;
    color: var(--text-primary);
    font-size: var(--font-size-sm);
}

.portfolio-table td {
    color: var(--text-secondary);
    font-size: var(--font-size-sm);
}

.empty-state {
    text-align: center;
    padding: var(--spacing-2xl);
    color: var(--text-muted);
}

/* Case Cracker Styles */
.case-cracker-content {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: var(--spacing-xl);
}

.simulator-panel {
    background-color: var(--bg-secondary);
    border: 1px solid var(--border-color);
    border-radius: var(--radius-lg);
    padding: var(--spacing-xl);
}

.input-group {
    display: flex;
    flex-direction: column;
    gap: var(--spacing-sm);
    margin-bottom: var(--spacing-lg);
}

.input-group label {
    font-weight: 500;
    color: var(--text-secondary);
    font-size: var(--font-size-sm);
}

.input-group select,
.input-group input {
    padding: var(--spacing-md);
    border: 1px solid var(--border-color);
    border-radius: var(--radius-md);
    background-color: var(--bg-primary);
    color: var(--text-primary);
}

.results-panel {
    background-color: var(--bg-secondary);
    border: 1px solid var(--border-color);
    border-radius: var(--radius-lg);
    padding: var(--spacing-xl);
}

.results-header h3 {
    margin-bottom: var(--spacing-lg);
}

/* Profile Styles */
.profile-content {
    max-width: 800px;
    margin: 0 auto;
}

.profile-tabs {
    display: flex;
    gap: var(--spacing-sm);
    margin-bottom: var(--spacing-xl);
    border-bottom: 1px solid var(--border-color);
}

.tab-btn {
    background: none;
    border: none;
    padding: var(--spacing-md) var(--spacing-lg);
    color: var(--text-secondary);
    font-weight: 500;
    cursor: pointer;
    border-bottom: 2px solid transparent;
    transition: all var(--transition-fast);
}

.tab-btn:hover,
.tab-btn.active {
    color: var(--primary-color);
    border-bottom-color: var(--primary-color);
}

.tab-panel {
    display: none;
}

.tab-panel.active {
    display: block;
}

.form-group {
    margin-bottom: var(--spacing-lg);
}

.form-group label {
    display: block;
    margin-bottom: var(--spacing-sm);
    font-weight: 500;
    color: var(--text-secondary);
}

.form-group input,
.form-group select {
    width: 100%;
    padding: var(--spacing-md);
    border: 1px solid var(--border-color);
    border-radius: var(--radius-md);
    background-color: var(--bg-secondary);
    color: var(--text-primary);
}

.form-group input:focus,
.form-group select:focus {
    outline: none;
    border-color: var(--primary-color);
}

.subscription-info {
    display: flex;
    flex-direction: column;
    gap: var(--spacing-lg);
}

.plan-card {
    background-color: var(--bg-secondary);
    border: 1px solid var(--border-color);
    border-radius: var(--radius-lg);
    padding: var(--spacing-xl);
    text-align: center;
}

.alert-settings {
    display: flex;
    flex-direction: column;
    gap: var(--spacing-lg);
}

.setting-item {
    display: flex;
    justify-content: space-between;
    align-items: center;
    padding: var(--spacing-md);
    background-color: var(--bg-secondary);
    border: 1px solid var(--border-color);
    border-radius: var(--radius-md);
}

.setting-item label {
    font-weight: 500;
    margin-bottom: 0;
}

.setting-item input[type="checkbox"] {
    width: auto;
    margin: 0;
}

.api-info {
    background-color: var(--bg-secondary);
    border: 1px solid var(--border-color);
    border-radius: var(--radius-lg);
    padding: var(--spacing-xl);
}

/* Modal Styles */
.modal {
    display: none;
    position: fixed;
    z-index: 1000;
    left: 0;
    top: 0;
    width: 100%;
    height: 100%;
    background-color: rgba(0, 0, 0, 0.5);
    backdrop-filter: blur(4px);
}

.modal.active {
    display: flex;
    align-items: center;
    justify-content: center;
}

.modal-content {
    background-color: var(--bg-primary);
    border: 1px solid var(--border-color);
    border-radius: var(--radius-xl);
    max-width: 900px;
    width: 90%;
    max-height: 90vh;
    overflow-y: auto;
    box-shadow: var(--shadow-lg);
}

.modal-header {
    display: flex;
    justify-content: space-between;
    align-items: center;
    padding: var(--spacing-xl);
    border-bottom: 1px solid var(--border-color);
}

.modal-header h3 {
    margin-bottom: 0;
}

.modal-close {
    background: none;
    border: none;
    font-size: var(--font-size-2xl);
    cursor: pointer;
    color: var(--text-secondary);
    padding: var(--spacing-sm);
    border-radius: var(--radius-md);
    transition: all var(--transition-fast);
}

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

.modal-body {
    padding: var(--spacing-xl);
}

/* Loading Overlay */
.loading-overlay {
    display: none;
    position: fixed;
    z-index: 2000;
    left: 0;
    top: 0;
    width: 100%;
    height: 100%;
    background-color: rgba(0, 0, 0, 0.8);
    backdrop-filter: blur(4px);
    flex-direction: column;
    align-items: center;
    justify-content: center;
    color: var(--white);
}

.loading-overlay.active {
    display: flex;
}

.loading-spinner {
    width: 40px;
    height: 40px;
    border: 4px solid rgba(255, 255, 255, 0.3);
    border-top: 4px solid var(--white);
    border-radius: 50%;
    animation: spin 1s linear infinite;
    margin-bottom: var(--spacing-md);
}

@keyframes spin {
    0% { transform: rotate(0deg); }
    100% { transform: rotate(360deg); }
}

/* Responsive Design */
@media (max-width: 768px) {
    .nav {
        flex-direction: column;
        gap: var(--spacing-md);
        padding: var(--spacing-md);
    }
    
    .nav-links {
        order: 3;
        width: 100%;
        justify-content: center;
        flex-wrap: wrap;
        gap: var(--spacing-sm);
    }
    
    .nav-actions {
        order: 2;
    }
    
    .main-content {
        padding: var(--spacing-lg) var(--spacing-md);
    }
    
    .stats-bar {
        grid-template-columns: repeat(2, 1fr);
        gap: var(--spacing-md);
    }
    
    .filter-panel {
        grid-template-columns: 1fr;
        gap: var(--spacing-md);
    }
    
    .content-grid {
        grid-template-columns: 1fr;
    }
    
    .sets-grid,
    .cards-grid {
        grid-template-columns: repeat(auto-fill, minmax(200px, 1fr));
        gap: var(--spacing-md);
    }
    
    .case-cracker-content {
        grid-template-columns: 1fr;
        gap: var(--spacing-lg);
    }
    
    .portfolio-actions {
        flex-direction: column;
    }
    
    .portfolio-table {
        overflow-x: auto;
    }
    
    .modal-content {
        width: 95%;
        margin: var(--spacing-md);
    }
    
    .modal-header,
    .modal-body {
        padding: var(--spacing-lg);
    }
}

@media (max-width: 480px) {
    .stats-bar {
        grid-template-columns: 1fr;
    }
    
    .sets-grid,
    .cards-grid {
        grid-template-columns: 1fr;
    }
    
    .search-input-group {
        flex-direction: column;
    }
    
    .search-btn {
        width: 100%;
    }
    
    .profile-tabs {
        flex-wrap: wrap;
        gap: var(--spacing-xs);
    }
    
    .tab-btn {
        padding: var(--spacing-sm) var(--spacing-md);
        font-size: var(--font-size-sm);
    }
}

/* Utility Classes */
.text-center { text-align: center; }
.text-left { text-align: left; }
.text-right { text-align: right; }

.mb-0 { margin-bottom: 0; }
.mb-1 { margin-bottom: var(--spacing-xs); }
.mb-2 { margin-bottom: var(--spacing-sm); }
.mb-3 { margin-bottom: var(--spacing-md); }
.mb-4 { margin-bottom: var(--spacing-lg); }
.mb-5 { margin-bottom: var(--spacing-xl); }

.mt-0 { margin-top: 0; }
.mt-1 { margin-top: var(--spacing-xs); }
.mt-2 { margin-top: var(--spacing-sm); }
.mt-3 { margin-top: var(--spacing-md); }
.mt-4 { margin-top: var(--spacing-lg); }
.mt-5 { margin-top: var(--spacing-xl); }

.hidden { display: none; }
.visible { display: block; }

.text-success { color: var(--success-color); }
.text-warning { color: var(--warning-color); }
.text-error { color: var(--error-color); }
.text-primary { color: var(--primary-color); }
.text-secondary { color: var(--text-secondary); }
.text-muted { color: var(--text-muted); }

/* Animation Classes */
.fade-in {
    animation: fadeIn 0.3s ease-in-out;
}

.slide-up {
    animation: slideUp 0.3s ease-out;
}

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

@keyframes slideUp {
    from {
        opacity: 0;
        transform: translateY(20px);
    }
    to {
        opacity: 1;
        transform: translateY(0);
    }
}