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

/* Language Toggle */
.language-toggle {
    position: fixed;
    top: 20px;
    right: 20px;
    z-index: 9999;
}

.language-btn {
    display: flex;
    align-items: center;
    gap: 8px;
    background: #1e293b;
    border: 2px solid #0ea5e9;
    border-radius: 8px;
    padding: 10px 14px;
    color: #ffffff;
    font-weight: 600;
    font-size: 14px;
    cursor: pointer;
    transition: all 0.3s ease;
    box-shadow: 0 4px 12px rgba(14, 165, 233, 0.3);
    min-width: 70px;
    justify-content: center;
}

.language-btn:hover {
    background: #0ea5e9;
    color: white;
    transform: translateY(-2px);
    box-shadow: 0 4px 12px rgba(0, 0, 0, 0.15);
}

.language-btn .flag {
    font-size: 16px;
}

.language-btn .lang-text {
    font-family: 'Inter', sans-serif;
    font-weight: 600;
}

/* CSS Variables */
:root {
    /* Color System */
    --primary-50: #f0f9ff;
    --primary-100: #e0f2fe;
    --primary-200: #bae6fd;
    --primary-300: #7dd3fc;
    --primary-400: #38bdf8;
    --primary-500: #0ea5e9;
    --primary-600: #0284c7;
    --primary-700: #0369a1;
    --primary-800: #075985;
    --primary-900: #0c4a6e;
    
    --accent-50: #ecfdf5;
    --accent-100: #d1fae5;
    --accent-200: #a7f3d0;
    --accent-300: #6ee7b7;
    --accent-400: #34d399;
    --accent-500: #10b981;
    --accent-600: #059669;
    --accent-700: #047857;
    --accent-800: #065f46;
    --accent-900: #064e3b;
    
    --neutral-50: #f8fafc;
    --neutral-100: #f1f5f9;
    --neutral-200: #e2e8f0;
    --neutral-300: #cbd5e1;
    --neutral-400: #94a3b8;
    --neutral-500: #64748b;
    --neutral-600: #475569;
    --neutral-700: #334155;
    --neutral-800: #1e293b;
    --neutral-900: #0f172a;
    
    /* Dark Theme */
    --bg-primary: #0a0e1a;
    --bg-secondary: #111827;
    --bg-tertiary: #1f2937;
    --bg-quaternary: #374151;
    --bg-card: #1e293b;
    --bg-elevated: #2d3748;
    
    /* Semantic Colors */
    --success: var(--accent-500);
    --warning: #f59e0b;
    --error: #ef4444;
    --info: var(--primary-500);
    
    /* Text Colors */
    --text-primary: #ffffff;
    --text-secondary: #e2e8f0;
    --text-tertiary: #94a3b8;
    --text-quaternary: #64748b;
    --text-inverse: #0f172a;
    
    /* Border Colors */
    --border-primary: #374151;
    --border-secondary: #4b5563;
    --border-accent: var(--primary-500);
    --border-focus: var(--primary-400);
    
    /* Shadows */
    --shadow-xs: 0 1px 2px 0 rgba(0, 0, 0, 0.05);
    --shadow-sm: 0 1px 3px 0 rgba(0, 0, 0, 0.1), 0 1px 2px 0 rgba(0, 0, 0, 0.06);
    --shadow-md: 0 4px 6px -1px rgba(0, 0, 0, 0.1), 0 2px 4px -1px rgba(0, 0, 0, 0.06);
    --shadow-lg: 0 10px 15px -3px rgba(0, 0, 0, 0.1), 0 4px 6px -2px rgba(0, 0, 0, 0.05);
    --shadow-xl: 0 20px 25px -5px rgba(0, 0, 0, 0.1), 0 10px 10px -5px rgba(0, 0, 0, 0.04);
    --shadow-2xl: 0 25px 50px -12px rgba(0, 0, 0, 0.25);
    --shadow-inner: inset 0 2px 4px 0 rgba(0, 0, 0, 0.06);
    
    /* Glows */
    --glow-primary: 0 0 20px rgba(14, 165, 233, 0.3);
    --glow-accent: 0 0 20px rgba(16, 185, 129, 0.3);
    --glow-success: 0 0 20px rgba(34, 197, 94, 0.3);
    --glow-warning: 0 0 20px rgba(245, 158, 11, 0.3);
    --glow-error: 0 0 20px rgba(239, 68, 68, 0.3);
    
    /* Spacing */
    --space-px: 1px;
    --space-0: 0;
    --space-1: 0.25rem;
    --space-2: 0.5rem;
    --space-3: 0.75rem;
    --space-4: 1rem;
    --space-5: 1.25rem;
    --space-6: 1.5rem;
    --space-8: 2rem;
    --space-10: 2.5rem;
    --space-12: 3rem;
    --space-16: 4rem;
    --space-20: 5rem;
    --space-24: 6rem;
    --space-32: 8rem;
    
    /* Border Radius */
    --radius-none: 0;
    --radius-sm: 0.125rem;
    --radius-md: 0.375rem;
    --radius-lg: 0.5rem;
    --radius-xl: 0.75rem;
    --radius-2xl: 1rem;
    --radius-3xl: 1.5rem;
    --radius-full: 9999px;
    
    /* Transitions */
    --transition-fast: 150ms cubic-bezier(0.4, 0, 0.2, 1);
    --transition-base: 200ms cubic-bezier(0.4, 0, 0.2, 1);
    --transition-slow: 300ms cubic-bezier(0.4, 0, 0.2, 1);
    --transition-bounce: 300ms cubic-bezier(0.68, -0.55, 0.265, 1.55);
    
    /* Z-Index Scale */
    --z-dropdown: 1000;
    --z-sticky: 1020;
    --z-fixed: 1030;
    --z-modal-backdrop: 1040;
    --z-modal: 1050;
    --z-popover: 1060;
    --z-tooltip: 1070;
    --z-toast: 1080;
}

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

*::before,
*::after {
    box-sizing: border-box;
}

html {
    font-size: 16px;
    scroll-behavior: smooth;
    -webkit-font-smoothing: antialiased;
    -moz-osx-font-smoothing: grayscale;
}

body {
    font-family: 'Inter', -apple-system, BlinkMacSystemFont, 'Segoe UI', Roboto, sans-serif;
    font-feature-settings: 'cv02', 'cv03', 'cv04', 'cv11';
    background: var(--bg-primary);
    color: var(--text-primary);
    line-height: 1.6;
    font-size: 16px;
    overflow-x: hidden;
}

/* Utility Classes */
.sr-only {
    position: absolute;
    width: 1px;
    height: 1px;
    padding: 0;
    margin: -1px;
    overflow: hidden;
    clip: rect(0, 0, 0, 0);
    white-space: nowrap;
    border: 0;
}

.truncate {
    overflow: hidden;
    text-overflow: ellipsis;
    white-space: nowrap;
}

/* Navigation */
.navbar {
    position: fixed;
    top: 0;
    left: 0;
    right: 0;
    background: rgba(10, 14, 26, 0.95);
    backdrop-filter: blur(20px);
    border-bottom: 1px solid var(--border-primary);
    z-index: var(--z-sticky);
    transition: all var(--transition-base);
}

.nav-container {
    max-width: 1440px;
    margin: 0 auto;
    padding: 0 var(--space-6);
    display: flex;
    align-items: center;
    justify-content: space-between;
    height: 72px;
}

.nav-brand {
    display: flex;
    align-items: center;
    gap: var(--space-8);
}

.brand-logo {
    display: flex;
    align-items: center;
    gap: var(--space-3);
    color: var(--text-primary);
    text-decoration: none;
}

.brand-logo svg {
    color: var(--primary-400);
    transition: all var(--transition-base);
}

.brand-logo:hover svg {
    color: var(--primary-300);
    transform: rotate(5deg);
}

.brand-text {
    font-size: 1.5rem;
    font-weight: 800;
    letter-spacing: -0.025em;
}

.nav-status {
    display: flex;
    align-items: center;
    gap: var(--space-2);
    padding: var(--space-2) var(--space-4);
    background: rgba(16, 185, 129, 0.1);
    border: 1px solid rgba(16, 185, 129, 0.2);
    border-radius: var(--radius-full);
}

.status-indicator {
    width: 8px;
    height: 8px;
    border-radius: var(--radius-full);
    background: var(--success);
    position: relative;
}

.status-indicator.live::before {
    content: '';
    position: absolute;
    top: -2px;
    left: -2px;
    right: -2px;
    bottom: -2px;
    border-radius: var(--radius-full);
    background: var(--success);
    opacity: 0.3;
    animation: pulse 2s infinite;
}

@keyframes pulse {
    0%, 100% { transform: scale(1); opacity: 0.3; }
    50% { transform: scale(1.5); opacity: 0.1; }
}

.status-text {
    font-size: 0.875rem;
    font-weight: 500;
    color: var(--success);
}

.network-stats {
    display: flex;
    gap: var(--space-6);
}

.stat-item {
    display: flex;
    flex-direction: column;
    align-items: center;
    gap: var(--space-1);
}

.stat-value {
    font-size: 1.125rem;
    font-weight: 700;
    color: var(--text-primary);
}

.stat-label {
    font-size: 0.75rem;
    color: var(--text-tertiary);
    text-transform: uppercase;
    letter-spacing: 0.05em;
}

/* Hero Section */
.hero {
    position: relative;
    min-height: 100vh;
    display: flex;
    align-items: center;
    overflow: hidden;
    padding-top: 72px;
}

.hero-background {
    position: absolute;
    inset: 0;
    z-index: -1;
}

.particle-system {
    position: absolute;
    inset: 0;
    background: radial-gradient(circle at 25% 25%, rgba(14, 165, 233, 0.1) 0%, transparent 50%),
                radial-gradient(circle at 75% 75%, rgba(16, 185, 129, 0.1) 0%, transparent 50%);
}

.grid-overlay {
    position: absolute;
    inset: 0;
    background-image: 
        linear-gradient(rgba(255, 255, 255, 0.02) 1px, transparent 1px),
        linear-gradient(90deg, rgba(255, 255, 255, 0.02) 1px, transparent 1px);
    background-size: 50px 50px;
    mask: radial-gradient(circle at center, black 0%, transparent 70%);
}

.hero-content {
    max-width: 1440px;
    margin: 0 auto;
    padding: 0 var(--space-6);
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: var(--space-16);
    align-items: center;
}

.hero-main {
    max-width: 600px;
}

.hero-title {
    font-size: clamp(2.5rem, 5vw, 4rem);
    font-weight: 800;
    line-height: 1.1;
    margin-bottom: var(--space-6);
    letter-spacing: -0.025em;
}

.title-primary {
    display: block;
    background: linear-gradient(135deg, var(--primary-400), var(--primary-600));
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
    background-clip: text;
}

.title-secondary {
    display: block;
    color: var(--text-primary);
}

.hero-subtitle {
    font-size: 1.25rem;
    color: var(--text-secondary);
    margin-bottom: var(--space-8);
    line-height: 1.6;
}

.hero-metrics {
    display: flex;
    gap: var(--space-8);
    margin-bottom: var(--space-8);
}

.metric {
    text-align: center;
}

.metric-value {
    display: block;
    font-size: 1.5rem;
    font-weight: 700;
    color: var(--primary-400);
    margin-bottom: var(--space-1);
}

.metric-label {
    font-size: 0.875rem;
    color: var(--text-tertiary);
    text-transform: uppercase;
    letter-spacing: 0.05em;
}

.hero-features {
    display: flex;
    flex-direction: column;
    gap: var(--space-6);
}

.feature-card {
    padding: var(--space-6);
    background: rgba(255, 255, 255, 0.02);
    border: 1px solid var(--border-primary);
    border-radius: var(--radius-2xl);
    backdrop-filter: blur(10px);
    transition: all var(--transition-base);
    display: flex;
    gap: var(--space-4);
}

.feature-card:hover {
    background: rgba(255, 255, 255, 0.05);
    border-color: var(--border-accent);
    transform: translateY(-2px);
    box-shadow: var(--shadow-lg);
}

.feature-icon {
    flex-shrink: 0;
    width: 48px;
    height: 48px;
    display: flex;
    align-items: center;
    justify-content: center;
    background: rgba(14, 165, 233, 0.1);
    border-radius: var(--radius-xl);
    color: var(--primary-400);
}

.feature-content h3 {
    font-size: 1.125rem;
    font-weight: 600;
    color: var(--text-primary);
    margin-bottom: var(--space-2);
}

.feature-content p {
    color: var(--text-secondary);
    line-height: 1.5;
}

/* Main Content */
.main-content {
    padding: var(--space-20) 0;
}

.dashboard-section {
    max-width: 1440px;
    margin: 0 auto;
    padding: 0 var(--space-6);
}

.section-header {
    display: flex;
    align-items: center;
    justify-content: space-between;
    margin-bottom: var(--space-12);
    flex-wrap: wrap;
    gap: var(--space-6);
}

.section-title h2 {
    font-size: 2.25rem;
    font-weight: 700;
    color: var(--text-primary);
    margin-bottom: var(--space-2);
}

.section-title p {
    color: var(--text-secondary);
    font-size: 1.125rem;
}

.section-controls {
    display: flex;
    align-items: center;
    gap: var(--space-4);
}

.view-toggle {
    display: flex;
    background: var(--bg-tertiary);
    border: 1px solid var(--border-primary);
    border-radius: var(--radius-lg);
    padding: var(--space-1);
}

.toggle-btn {
    padding: var(--space-2) var(--space-3);
    background: transparent;
    border: none;
    color: var(--text-tertiary);
    border-radius: var(--radius-md);
    cursor: pointer;
    transition: all var(--transition-fast);
    display: flex;
    align-items: center;
    justify-content: center;
}

.toggle-btn:hover {
    color: var(--text-secondary);
    background: rgba(255, 255, 255, 0.05);
}

.toggle-btn.active {
    color: var(--text-primary);
    background: var(--primary-600);
    box-shadow: var(--shadow-sm);
}

.filter-controls {
    display: flex;
    gap: var(--space-3);
}

.filter-select {
    padding: var(--space-2) var(--space-4);
    background: var(--bg-tertiary);
    border: 1px solid var(--border-primary);
    border-radius: var(--radius-lg);
    color: var(--text-primary);
    font-size: 0.875rem;
    cursor: pointer;
    transition: all var(--transition-base);
    min-width: 150px;
}

.filter-select:focus {
    outline: none;
    border-color: var(--border-focus);
    box-shadow: 0 0 0 3px rgba(14, 165, 233, 0.1);
}

/* Marketplace Layout */
.marketplace-container {
    display: grid;
    grid-template-columns: 320px 1fr;
    gap: var(--space-8);
}

.marketplace-sidebar {
    background: var(--bg-card);
    border: 1px solid var(--border-primary);
    border-radius: var(--radius-2xl);
    padding: var(--space-6);
    height: fit-content;
    position: sticky;
    top: calc(72px + var(--space-6));
}

.sidebar-section {
    margin-bottom: var(--space-8);
}

.sidebar-section:last-child {
    margin-bottom: 0;
}

.sidebar-section h3 {
    font-size: 1rem;
    font-weight: 600;
    color: var(--text-primary);
    margin-bottom: var(--space-4);
}

.sidebar-btn {
    width: 100%;
    padding: var(--space-4);
    background: transparent;
    border: 1px solid var(--border-primary);
    border-radius: var(--radius-xl);
    color: var(--text-secondary);
    font-size: 0.875rem;
    font-weight: 500;
    cursor: pointer;
    transition: all var(--transition-base);
    display: flex;
    align-items: center;
    gap: var(--space-3);
    margin-bottom: var(--space-3);
}

.sidebar-btn:hover {
    background: var(--bg-elevated);
    border-color: var(--border-accent);
    color: var(--text-primary);
    transform: translateY(-1px);
}

.sidebar-btn:last-child {
    margin-bottom: 0;
}

.analytics-widget {
    background: var(--bg-elevated);
    border-radius: var(--radius-xl);
    padding: var(--space-4);
}

.analytics-item {
    display: flex;
    align-items: center;
    justify-content: space-between;
    padding: var(--space-3) 0;
    border-bottom: 1px solid var(--border-primary);
}

.analytics-item:last-child {
    border-bottom: none;
}

.analytics-label {
    font-size: 0.875rem;
    color: var(--text-tertiary);
}

.analytics-value {
    font-weight: 600;
    color: var(--text-primary);
}

.analytics-change {
    font-size: 0.75rem;
    font-weight: 500;
    padding: var(--space-1) var(--space-2);
    border-radius: var(--radius-md);
}

.analytics-change.positive {
    color: var(--success);
    background: rgba(16, 185, 129, 0.1);
}

.analytics-change.negative {
    color: var(--error);
    background: rgba(239, 68, 68, 0.1);
}

.analytics-change.neutral {
    color: var(--text-tertiary);
    background: rgba(148, 163, 184, 0.1);
}

/* Product Grid */
.product-grid {
    display: grid;
    grid-template-columns: repeat(auto-fill, minmax(320px, 1fr));
    gap: var(--space-6);
}

/* Product Card Enhancements */
.product-card {
    background: var(--bg-card);
    border: 1px solid var(--border-primary);
    border-radius: var(--radius-2xl);
    overflow: hidden;
    transition: all var(--transition-base);
    position: relative;
    cursor: pointer;
}

.product-card:hover {
    transform: translateY(-4px);
    box-shadow: var(--shadow-2xl);
    border-color: var(--border-accent);
}

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

.product-card::before {
    content: '';
    position: absolute;
    top: 0;
    left: 0;
    right: 0;
    height: 2px;
    background: linear-gradient(90deg, var(--primary-500), var(--accent-500));
    opacity: 0;
    transition: opacity var(--transition-base);
}

.featured-badge {
    position: absolute;
    top: 12px;
    left: 12px;
    background: linear-gradient(135deg, var(--accent-500), var(--accent-600));
    color: white;
    padding: 4px 8px;
    border-radius: var(--radius-md);
    font-size: 0.75rem;
    font-weight: 600;
    z-index: 2;
    text-transform: uppercase;
    letter-spacing: 0.5px;
}

.product-image-container {
    position: relative;
    width: 100%;
    height: 200px;
    overflow: hidden;
}

.product-image {
    width: 100%;
    height: 100%;
    object-fit: cover;
    background: var(--bg-secondary);
    transition: transform var(--transition-base);
}

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

.condition-badge {
    position: absolute;
    top: 12px;
    right: 12px;
    padding: 4px 8px;
    border-radius: var(--radius-md);
    font-size: 0.75rem;
    font-weight: 500;
    text-transform: capitalize;
    backdrop-filter: blur(10px);
}

.condition-new {
    background: rgba(16, 185, 129, 0.9);
    color: white;
}

.condition-like-new {
    background: rgba(59, 130, 246, 0.9);
    color: white;
}

.condition-good {
    background: rgba(245, 158, 11, 0.9);
    color: white;
}

.condition-fair {
    background: rgba(156, 163, 175, 0.9);
    color: white;
}

.product-info {
    padding: var(--space-6);
}

.product-title {
    font-size: 1.125rem;
    font-weight: 600;
    color: var(--text-primary);
    margin-bottom: var(--space-2);
    line-height: 1.4;
}

.product-description {
    color: var(--text-secondary);
    margin-bottom: var(--space-4);
    line-height: 1.5;
    display: -webkit-box;
    -webkit-line-clamp: 2;
    -webkit-box-orient: vertical;
    overflow: hidden;
}

.product-meta {
    display: flex;
    justify-content: space-between;
    align-items: center;
    margin-bottom: var(--space-3);
    font-size: 0.875rem;
    color: var(--text-tertiary);
}

.product-location,
.product-views {
    display: flex;
    align-items: center;
    gap: var(--space-1);
}

.product-seller {
    display: flex;
    justify-content: space-between;
    align-items: center;
    margin-bottom: var(--space-4);
    font-size: 0.875rem;
    color: var(--text-tertiary);
}

.seller-id {
    font-family: 'Courier New', monospace;
    background: var(--bg-tertiary);
    padding: 2px 6px;
    border-radius: var(--radius-sm);
    font-size: 0.75rem;
}

.product-date {
    font-size: 0.75rem;
}

.product-price {
    font-size: 1.5rem;
    font-weight: 700;
    color: var(--accent-500);
    margin-bottom: var(--space-4);
}

.buy-button {
    width: 100%;
    padding: var(--space-3) var(--space-4);
    background: linear-gradient(135deg, var(--primary-600), var(--primary-700));
    border: none;
    border-radius: var(--radius-xl);
    color: var(--text-primary);
    font-weight: 600;
    cursor: pointer;
    transition: all var(--transition-base);
    font-size: 0.875rem;
    display: flex;
    align-items: center;
    justify-content: center;
    gap: var(--space-2);
}

.buy-button:hover {
    transform: translateY(-2px);
    box-shadow: var(--shadow-lg);
    background: linear-gradient(135deg, var(--primary-500), var(--primary-600));
}

/* Modal Styles */
.modal {
    display: none;
    position: fixed;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    background: rgba(0, 0, 0, 0.8);
    backdrop-filter: blur(5px);
    z-index: var(--z-modal);
    align-items: center;
    justify-content: center;
}

.modal.active {
    display: flex;
}

.modal-content {
    background: var(--bg-card);
    border-radius: var(--radius-2xl);
    max-width: 800px;
    width: 90%;
    max-height: 90vh;
    overflow-y: auto;
    transform: scale(0.9);
    transition: transform var(--transition-base);
}

.modal.active .modal-content {
    transform: scale(1);
}

.modal-header {
    display: flex;
    justify-content: space-between;
    align-items: center;
    padding: var(--space-6);
    border-bottom: 1px solid var(--border-primary);
}

.modal-header h2 {
    font-size: 1.5rem;
    font-weight: 600;
    color: var(--text-primary);
}

.modal-close {
    background: none;
    border: none;
    color: var(--text-secondary);
    cursor: pointer;
    padding: var(--space-2);
    border-radius: var(--radius-md);
    transition: all var(--transition-base);
}

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

/* Form Styles */
.advanced-form {
    padding: var(--space-6);
}

.form-grid {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: var(--space-6);
    margin-bottom: var(--space-6);
}

.form-section {
    margin-bottom: var(--space-6);
}

.form-section h3 {
    font-size: 1.125rem;
    font-weight: 600;
    color: var(--text-primary);
    margin-bottom: var(--space-4);
}

.form-row {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: var(--space-4);
}

.form-group {
    margin-bottom: var(--space-4);
}

.form-group label {
    display: block;
    font-size: 0.875rem;
    font-weight: 500;
    color: var(--text-secondary);
    margin-bottom: var(--space-2);
}

.form-input {
    width: 100%;
    padding: var(--space-3) var(--space-4);
    background: var(--bg-tertiary);
    border: 1px solid var(--border-primary);
    border-radius: var(--radius-lg);
    color: var(--text-primary);
    font-size: 0.875rem;
    transition: all var(--transition-base);
}

.form-input:focus {
    outline: none;
    border-color: var(--border-focus);
    box-shadow: 0 0 0 3px rgba(14, 165, 233, 0.1);
}

.form-input::placeholder {
    color: var(--text-quaternary);
}

.image-upload-container {
    margin-bottom: var(--space-6);
}

.image-upload-area {
    border: 2px dashed var(--border-primary);
    border-radius: var(--radius-xl);
    padding: var(--space-8);
    text-align: center;
    cursor: pointer;
    transition: all var(--transition-base);
    position: relative;
}

.image-upload-area:hover {
    border-color: var(--border-accent);
    background: rgba(14, 165, 233, 0.05);
}

.file-input {
    position: absolute;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    opacity: 0;
    cursor: pointer;
}

.upload-content {
    display: flex;
    flex-direction: column;
    align-items: center;
    gap: var(--space-3);
    pointer-events: none;
}

.upload-content svg {
    color: var(--text-tertiary);
}

.upload-content h4 {
    font-size: 1.125rem;
    font-weight: 600;
    color: var(--text-primary);
}

.upload-content p {
    color: var(--text-secondary);
}

.upload-content small {
    color: var(--text-tertiary);
}

.image-preview-grid {
    display: grid;
    grid-template-columns: repeat(auto-fill, minmax(100px, 1fr));
    gap: var(--space-3);
    margin-top: var(--space-4);
}

.image-preview-grid img {
    width: 100%;
    height: 100px;
    object-fit: cover;
    border-radius: var(--radius-lg);
    border: 1px solid var(--border-primary);
}

.form-actions {
    display: flex;
    justify-content: flex-end;
    gap: var(--space-3);
    padding-top: var(--space-6);
    border-top: 1px solid var(--border-primary);
}

.btn {
    padding: var(--space-3) var(--space-6);
    border: none;
    border-radius: var(--radius-xl);
    font-weight: 600;
    font-size: 0.875rem;
    cursor: pointer;
    transition: all var(--transition-base);
    display: flex;
    align-items: center;
    gap: var(--space-2);
}

.btn-primary {
    background: linear-gradient(135deg, var(--primary-600), var(--primary-700));
    color: var(--text-primary);
}

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

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

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

/* Footer */
.footer {
    background: var(--bg-secondary);
    border-top: 1px solid var(--border-primary);
    padding: var(--space-16) 0 var(--space-8);
}

.footer-container {
    max-width: 1440px;
    margin: 0 auto;
    padding: 0 var(--space-6);
}

.footer-main {
    display: grid;
    grid-template-columns: 1fr 2fr;
    gap: var(--space-16);
    margin-bottom: var(--space-12);
}

.footer-brand {
    max-width: 400px;
}

.footer-brand .brand-logo {
    margin-bottom: var(--space-4);
}

.footer-brand p {
    color: var(--text-secondary);
    margin-bottom: var(--space-6);
    line-height: 1.6;
}

.compliance-badges {
    display: flex;
    gap: var(--space-3);
    flex-wrap: wrap;
}

.badge {
    padding: var(--space-2) var(--space-3);
    background: var(--bg-tertiary);
    border: 1px solid var(--border-primary);
    border-radius: var(--radius-lg);
    font-size: 0.75rem;
    font-weight: 500;
    color: var(--text-secondary);
}

.footer-links {
    display: grid;
    grid-template-columns: repeat(3, 1fr);
    gap: var(--space-8);
}

.link-group h4 {
    font-size: 1rem;
    font-weight: 600;
    color: var(--text-primary);
    margin-bottom: var(--space-4);
    text-transform: uppercase;
    letter-spacing: 0.05em;
}

.link-group ul {
    list-style: none;
}

.link-group li {
    margin-bottom: var(--space-2);
}

.link-group a {
    color: var(--text-secondary);
    text-decoration: none;
    transition: color var(--transition-base);
    font-size: 0.875rem;
}

.link-group a:hover {
    color: var(--text-primary);
}

.footer-bottom {
    display: flex;
    justify-content: space-between;
    align-items: center;
    padding-top: var(--space-8);
    border-top: 1px solid var(--border-primary);
    flex-wrap: wrap;
    gap: var(--space-4);
}

.footer-legal {
    display: flex;
    align-items: center;
    gap: var(--space-6);
}

.footer-legal p {
    color: var(--text-tertiary);
    font-size: 0.875rem;
}

.legal-links {
    display: flex;
    gap: var(--space-4);
}

.legal-links a {
    color: var(--text-tertiary);
    text-decoration: none;
    font-size: 0.875rem;
    transition: color var(--transition-base);
}

.legal-links a:hover {
    color: var(--text-secondary);
}

.footer-status {
    display: flex;
    align-items: center;
    gap: var(--space-2);
    color: var(--text-tertiary);
    font-size: 0.875rem;
}

/* Utility Messages */
.success-message {
    background: rgba(16, 185, 129, 0.1);
    border: 1px solid rgba(16, 185, 129, 0.2);
    color: var(--success);
    padding: var(--space-4);
    border-radius: var(--radius-lg);
    margin-bottom: var(--space-4);
}

.error-message {
    background: rgba(239, 68, 68, 0.1);
    border: 1px solid rgba(239, 68, 68, 0.2);
    color: var(--error);
    padding: var(--space-4);
    border-radius: var(--radius-lg);
    margin-bottom: var(--space-4);
}

.loading {
    display: flex;
    justify-content: center;
    align-items: center;
    padding: var(--space-8);
    color: var(--text-secondary);
}

/* Responsive Design */
@media (max-width: 1024px) {
    .hero-content {
        grid-template-columns: 1fr;
        gap: var(--space-8);
    }

    .marketplace-container {
        grid-template-columns: 1fr;
    }

    .marketplace-sidebar {
        order: 2;
    }

    .form-grid {
        grid-template-columns: 1fr;
    }

    .footer-main {
        grid-template-columns: 1fr;
        gap: var(--space-8);
    }
}

@media (max-width: 768px) {
    .nav-container {
        padding: 0 var(--space-4);
    }

    .network-stats {
        display: none;
    }

    .section-header {
        flex-direction: column;
        align-items: flex-start;
    }

    .hero-metrics {
        justify-content: center;
    }

    .filter-controls {
        flex-direction: column;
        width: 100%;
    }

    .filter-select {
        width: 100%;
    }

    .footer-links {
        grid-template-columns: 1fr;
    }

    .footer-bottom {
        flex-direction: column;
        text-align: center;
    }
}

/* Scrollbar Styles */
::-webkit-scrollbar {
    width: 8px;
}

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

::-webkit-scrollbar-thumb {
    background: var(--border-primary);
    border-radius: var(--radius-full);
}

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

/* Selection Styles */
::selection {
    background: rgba(14, 165, 233, 0.3);
    color: var(--text-primary);
}

/* Focus Styles */
:focus-visible {
    outline: 2px solid var(--primary-400);
    outline-offset: 2px;
}

/* Reduced Motion */
@media (prefers-reduced-motion: reduce) {
    * {
        animation-duration: 0.01ms !important;
        animation-iteration-count: 1 !important;
        transition-duration: 0.01ms !important;
    }
}