/* =====================================
   OpenCryptoData - Design System
   ===================================== */

/* CSS Variables - Design Tokens */
:root {
    /* Colors - Dark Theme */
    --color-bg-primary: #0d1421;
    --color-bg-secondary: #131a2a;
    --color-bg-tertiary: #1a2236;
    --color-bg-card: rgba(26, 34, 54, 0.8);
    --color-bg-hover: rgba(99, 102, 241, 0.1);

    /* Text Colors */
    --color-text-primary: #f1f5f9;
    --color-text-secondary: #94a3b8;
    --color-text-muted: #64748b;

    /* Accent Colors */
    --color-accent-primary: #6366f1;
    --color-accent-secondary: #8b5cf6;
    --color-accent-gradient: linear-gradient(135deg, #6366f1 0%, #8b5cf6 100%);

    /* Status Colors */
    --color-positive: #22c55e;
    --color-positive-bg: rgba(34, 197, 94, 0.1);
    --color-negative: #ef4444;
    --color-negative-bg: rgba(239, 68, 68, 0.1);

    /* Border Colors */
    --color-border: rgba(148, 163, 184, 0.1);
    --color-border-hover: rgba(148, 163, 184, 0.2);

    /* Shadows */
    --shadow-sm: 0 1px 2px rgba(0, 0, 0, 0.3);
    --shadow-md: 0 4px 6px rgba(0, 0, 0, 0.3);
    --shadow-lg: 0 10px 25px rgba(0, 0, 0, 0.4);
    --shadow-glow: 0 0 20px rgba(99, 102, 241, 0.2);

    /* 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: 2rem;

    /* 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: 0.375rem;
    --radius-md: 0.5rem;
    --radius-lg: 0.75rem;
    --radius-xl: 1rem;
    --radius-full: 9999px;

    /* Transitions */
    --transition-fast: 150ms ease;
    --transition-base: 200ms ease;
    --transition-slow: 300ms ease;
}

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

html {
    font-size: 16px;
    scroll-behavior: smooth;
    overflow-x: hidden;
}

body {
    font-family: var(--font-family);
    font-size: var(--font-size-base);
    line-height: 1.6;
    color: var(--color-text-primary);
    background: var(--color-bg-primary);
    min-height: 100vh;
    -webkit-font-smoothing: antialiased;
    -moz-osx-font-smoothing: grayscale;
    overflow-x: hidden;
}

/* App Container */
.app {
    display: flex;
    flex-direction: column;
    min-height: 100vh;
    overflow-x: hidden;
    width: 100%;
    max-width: 100vw;
}

/* =====================================
   Header
   ===================================== */
.header {
    position: sticky;
    top: 0;
    z-index: 100;
    background: rgba(13, 20, 33, 0.9);
    backdrop-filter: blur(12px);
    border-bottom: 1px solid var(--color-border);
    width: 100%;
}

.header-content {
    max-width: 1400px;
    margin: 0 auto;
    padding: var(--spacing-md) var(--spacing-lg);
    display: flex;
    align-items: center;
    gap: var(--spacing-xl);
}

.logo {
    display: flex;
    align-items: center;
    gap: var(--spacing-sm);
    text-decoration: none;
    color: inherit;
}

.logo-icon {
    width: 32px;
    height: 32px;
}

.logo-icon svg {
    width: 100%;
    height: 100%;
}

.logo-text {
    font-size: var(--font-size-xl);
    font-weight: 700;
    color: var(--color-text-primary);
}

.logo-accent {
    background: var(--color-accent-gradient);
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
    background-clip: text;
}

.search-container {
    flex: 1;
    max-width: 400px;
    position: relative;
}

.search-icon {
    position: absolute;
    left: var(--spacing-md);
    top: 50%;
    transform: translateY(-50%);
    width: 18px;
    height: 18px;
    color: var(--color-text-muted);
    pointer-events: none;
}

.search-input {
    width: 100%;
    padding: var(--spacing-sm) var(--spacing-md);
    padding-left: 44px;
    font-size: var(--font-size-sm);
    color: var(--color-text-primary);
    background: var(--color-bg-tertiary);
    border: 1px solid var(--color-border);
    border-radius: var(--radius-full);
    outline: none;
    transition: all var(--transition-base);
}

.search-input::placeholder {
    color: var(--color-text-muted);
}

.search-input:focus {
    border-color: var(--color-accent-primary);
    box-shadow: var(--shadow-glow);
}

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

.refresh-btn,
.back-btn {
    display: flex;
    align-items: center;
    gap: var(--spacing-sm);
    padding: var(--spacing-sm) var(--spacing-md);
    font-size: var(--font-size-sm);
    font-weight: 500;
    color: var(--color-text-secondary);
    background: var(--color-bg-tertiary);
    border: 1px solid var(--color-border);
    border-radius: var(--radius-md);
    cursor: pointer;
    text-decoration: none;
    transition: all var(--transition-base);
}

.refresh-btn:hover,
.back-btn:hover {
    color: var(--color-text-primary);
    border-color: var(--color-accent-primary);
    background: var(--color-bg-hover);
}

.refresh-btn svg,
.back-btn svg {
    width: 18px;
    height: 18px;
}

.refresh-btn.loading svg {
    animation: spin 1s linear infinite;
}

@keyframes spin {
    from {
        transform: rotate(0deg);
    }

    to {
        transform: rotate(360deg);
    }
}

/* Currency Selector */
.currency-selector {
    padding: var(--spacing-sm) var(--spacing-md);
    font-size: var(--font-size-sm);
    font-weight: 500;
    font-family: var(--font-family);
    color: var(--color-text-secondary);
    background: var(--color-bg-tertiary);
    border: 1px solid var(--color-border);
    border-radius: var(--radius-md);
    cursor: pointer;
    outline: none;
    appearance: none;
    -webkit-appearance: none;
    -moz-appearance: none;
    background-image: url("data:image/svg+xml,%3Csvg xmlns='http://www.w3.org/2000/svg' width='12' height='12' viewBox='0 0 24 24' fill='none' stroke='%2394a3b8' stroke-width='2'%3E%3Cpath d='M6 9l6 6 6-6'/%3E%3C/svg%3E");
    background-repeat: no-repeat;
    background-position: right 8px center;
    padding-right: 28px;
    transition: all var(--transition-base);
}

.currency-selector:hover {
    color: var(--color-text-primary);
    border-color: var(--color-accent-primary);
    background-color: var(--color-bg-hover);
}

.currency-selector:focus {
    border-color: var(--color-accent-primary);
    box-shadow: var(--shadow-glow);
}

.currency-selector option {
    background: var(--color-bg-secondary);
    color: var(--color-text-primary);
    padding: 8px;
}

/* Language Selector */
.language-selector {
    padding: var(--spacing-sm) var(--spacing-md);
    font-size: var(--font-size-sm);
    font-weight: 500;
    font-family: var(--font-family);
    color: var(--color-text-secondary);
    background: var(--color-bg-tertiary);
    border: 1px solid var(--color-border);
    border-radius: var(--radius-md);
    cursor: pointer;
    outline: none;
    appearance: none;
    -webkit-appearance: none;
    -moz-appearance: none;
    background-image: url("data:image/svg+xml,%3Csvg xmlns='http://www.w3.org/2000/svg' width='12' height='12' viewBox='0 0 24 24' fill='none' stroke='%2394a3b8' stroke-width='2'%3E%3Cpath d='M6 9l6 6 6-6'/%3E%3C/svg%3E");
    background-repeat: no-repeat;
    background-position: right 8px center;
    padding-right: 28px;
    transition: all var(--transition-base);
}

.language-selector:hover {
    color: var(--color-text-primary);
    border-color: var(--color-accent-primary);
    background-color: var(--color-bg-hover);
}

.language-selector:focus {
    border-color: var(--color-accent-primary);
    box-shadow: var(--shadow-glow);
}

.language-selector option {
    background: var(--color-bg-secondary);
    color: var(--color-text-primary);
    padding: 8px;
}

/* =====================================
   Stats Bar
   ===================================== */
.stats-bar {
    background: var(--color-bg-secondary);
    border-bottom: 1px solid var(--color-border);
    width: 100%;
    overflow-x: hidden;
}

.stats-content {
    max-width: 1400px;
    margin: 0 auto;
    padding: var(--spacing-sm) var(--spacing-lg);
    display: flex;
    align-items: center;
    gap: var(--spacing-xl);
    overflow-x: auto;
    scrollbar-width: none;
}

.stats-content::-webkit-scrollbar {
    display: none;
}

.stat-item {
    display: flex;
    align-items: center;
    gap: var(--spacing-xs);
    white-space: nowrap;
}

.stat-label {
    font-size: var(--font-size-xs);
    color: var(--color-text-muted);
}

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

/* =====================================
   Main Content
   ===================================== */
.main-content {
    flex: 1;
    max-width: 1400px;
    margin: 0 auto;
    padding: var(--spacing-lg);
    width: 100%;
    position: relative;
    overflow-x: hidden;
}

.table-container {
    background: var(--color-bg-card);
    border: 1px solid var(--color-border);
    border-radius: var(--radius-lg);
    overflow: hidden;
    box-shadow: var(--shadow-lg);
}

/* =====================================
   Crypto Table
   ===================================== */
.crypto-table {
    width: 100%;
    border-collapse: collapse;
}

.crypto-table thead {
    background: var(--color-bg-tertiary);
    position: sticky;
    top: 0;
}

.crypto-table th {
    padding: var(--spacing-md);
    font-size: var(--font-size-xs);
    font-weight: 600;
    text-transform: uppercase;
    letter-spacing: 0.05em;
    color: var(--color-text-muted);
    text-align: left;
    border-bottom: 1px solid var(--color-border);
    white-space: nowrap;
}

.crypto-table th.sortable {
    cursor: pointer;
    user-select: none;
    transition: color var(--transition-fast);
}

.crypto-table th.sortable:hover {
    color: var(--color-accent-primary);
}

.crypto-table th.sorted {
    color: var(--color-accent-primary);
}

.crypto-table th.sorted::after {
    content: ' ↓';
}

.crypto-table th.sorted.desc::after {
    content: ' ↑';
}

.crypto-table td {
    padding: var(--spacing-md);
    font-size: var(--font-size-sm);
    border-bottom: 1px solid var(--color-border);
    transition: background var(--transition-fast);
}

.crypto-table tbody tr {
    cursor: pointer;
    transition: background var(--transition-fast);
}

.crypto-table tbody tr:hover {
    background: var(--color-bg-hover);
}

.crypto-table tbody tr:last-child td {
    border-bottom: none;
}

/* Column Styles */
.col-rank {
    width: 60px;
    text-align: center;
}

.col-rank td {
    color: var(--color-text-muted);
    font-weight: 500;
}

.col-name {
    min-width: 200px;
}

.col-price,
.col-change,
.col-volume,
.col-market-cap {
    text-align: right;
}

.col-sparkline {
    width: 120px;
    text-align: center;
}

.sparkline-container {
    width: 100px;
    height: 40px;
    display: inline-block;
}

.col-exchanges {
    width: 140px;
    text-align: center;
}

.exchange-badge.more {
    background: var(--color-bg-tertiary);
    color: var(--color-text-muted);
}

/* Coin Name Cell */
.coin-cell {
    display: flex;
    align-items: center;
    gap: var(--spacing-sm);
}

.coin-icon {
    width: 32px;
    height: 32px;
    border-radius: var(--radius-full);
    background: var(--color-accent-gradient);
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: var(--font-size-xs);
    font-weight: 700;
    color: white;
    flex-shrink: 0;
    overflow: hidden;
}

.coin-icon img {
    width: 100%;
    height: 100%;
    object-fit: contain;
}

.coin-info {
    display: flex;
    flex-direction: column;
}

.coin-name-text {
    font-weight: 600;
    color: var(--color-text-primary);
}

.coin-symbol-text {
    font-size: var(--font-size-xs);
    color: var(--color-text-muted);
}

/* Price Change */
.price-change {
    font-weight: 600;
    padding: var(--spacing-xs) var(--spacing-sm);
    border-radius: var(--radius-sm);
}

.price-change.positive {
    color: var(--color-positive);
    background: var(--color-positive-bg);
}

.price-change.negative {
    color: var(--color-negative);
    background: var(--color-negative-bg);
}

/* Exchange Badges */
.exchange-badges {
    display: flex;
    gap: 4px;
    justify-content: center;
    flex-wrap: wrap;
}

.exchange-badge {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    width: 24px;
    height: 24px;
    font-size: 10px;
    font-weight: 600;
    text-transform: uppercase;
    border-radius: var(--radius-sm);
    background: var(--color-bg-tertiary);
    color: var(--color-text-secondary);
    border: 1px solid var(--color-border);
}

.exchange-badge.binance {
    background: rgba(243, 186, 47, 0.2);
    color: #f3ba2f;
    border-color: rgba(243, 186, 47, 0.3);
}

.exchange-badge.coinbase {
    background: rgba(0, 82, 255, 0.2);
    color: #0052ff;
    border-color: rgba(0, 82, 255, 0.3);
}

.exchange-badge.kraken {
    background: rgba(92, 95, 247, 0.2);
    color: #5c5ff7;
    border-color: rgba(92, 95, 247, 0.3);
}

.exchange-badge.kucoin {
    background: rgba(35, 175, 145, 0.2);
    color: #23af91;
    border-color: rgba(35, 175, 145, 0.3);
}

.exchange-badge.bybit {
    background: rgba(242, 169, 0, 0.2);
    color: #f2a900;
    border-color: rgba(242, 169, 0, 0.3);
}

.exchange-badge.okx {
    background: rgba(255, 255, 255, 0.15);
    color: #ffffff;
    border-color: rgba(255, 255, 255, 0.25);
}

.exchange-badge.gateio {
    background: rgba(0, 182, 122, 0.2);
    color: #00b67a;
    border-color: rgba(0, 182, 122, 0.3);
}

.exchange-badge.mexc {
    background: rgba(0, 178, 255, 0.2);
    color: #00b2ff;
    border-color: rgba(0, 178, 255, 0.3);
}

/* =====================================
   Skeleton Loading
   ===================================== */
.skeleton-row {
    pointer-events: none;
}

.skeleton {
    height: 48px;
    background: linear-gradient(90deg,
            var(--color-bg-tertiary) 25%,
            var(--color-bg-secondary) 50%,
            var(--color-bg-tertiary) 75%);
    background-size: 200% 100%;
    animation: shimmer 1.5s infinite;
    border-radius: var(--radius-sm);
}

@keyframes shimmer {
    0% {
        background-position: 200% 0;
    }

    100% {
        background-position: -200% 0;
    }
}

/* =====================================
   Loading Overlay
   ===================================== */
.loading-overlay {
    position: absolute;
    top: 0;
    left: 0;
    right: 0;
    bottom: 0;
    background: rgba(13, 20, 33, 0.8);
    backdrop-filter: blur(4px);
    display: flex;
    flex-direction: column;
    align-items: center;
    justify-content: center;
    gap: var(--spacing-md);
    z-index: 50;
}

.loading-overlay.hidden {
    display: none;
}

.spinner {
    width: 48px;
    height: 48px;
    border: 3px solid var(--color-border);
    border-top-color: var(--color-accent-primary);
    border-radius: 50%;
    animation: spin 1s linear infinite;
}

.loading-overlay p {
    color: var(--color-text-secondary);
    font-size: 0.9rem;
    color: var(--color-text-secondary);
}

/* Pagination */
.pagination-container {
    display: flex;
    justify-content: center;
    align-items: center;
    gap: 20px;
    margin-top: 24px;
    padding-bottom: 40px;
}

.pagination-btn {
    display: flex;
    align-items: center;
    gap: 8px;
    padding: 10px 20px;
    background: var(--color-bg-card);
    border: 1px solid var(--color-border);
    border-radius: 8px;
    color: var(--color-text-primary);
    font-weight: 600;
    cursor: pointer;
    transition: all 0.2s;
}

.pagination-btn:hover:not(:disabled) {
    background: var(--color-bg-hover);
    transform: translateY(-1px);
}

.pagination-btn:disabled {
    opacity: 0.5;
    cursor: not-allowed;
}

.pagination-btn svg {
    width: 18px;
    height: 18px;
}

.pagination-info {
    color: var(--color-text-secondary);
    font-weight: 500;
}

/* =====================================
   Footer
   ===================================== */
.footer {
    background: var(--color-bg-secondary);
    border-top: 1px solid var(--color-border);
    padding: var(--spacing-xl) var(--spacing-lg);
    width: 100%;
    overflow-x: hidden;
}

.footer-content {
    max-width: 1400px;
    margin: 0 auto;
    text-align: center;
    font-size: var(--font-size-sm);
    color: var(--color-text-muted);
}

.footer-links {
    display: flex;
    justify-content: center;
    gap: var(--spacing-md);
    margin-bottom: var(--spacing-md);
    flex-wrap: wrap;
}

.footer-links .nav-link {
    display: inline-flex;
    align-items: center;
    gap: 0.5rem;
    padding: 0.625rem 1rem;
    background: var(--color-bg-tertiary);
    border: 1px solid var(--color-border);
    border-radius: var(--radius-md);
    color: var(--color-text-secondary);
    text-decoration: none;
    font-size: var(--font-size-sm);
    font-weight: 500;
    transition: all var(--transition-base);
}

.footer-links .nav-link:hover {
    background: var(--color-bg-hover);
    border-color: var(--color-accent-primary);
    color: var(--color-text-primary);
}

.footer-links .nav-link svg {
    width: 18px;
    height: 18px;
    opacity: 0.7;
}

.footer-links .nav-link:hover svg {
    opacity: 1;
}

.footer-brand {
    font-weight: 600;
    color: var(--color-text-secondary);
    margin-bottom: var(--spacing-xs);
}

.last-updated {
    font-size: var(--font-size-xs);
}

/* =====================================
   Coin Detail Page
   ===================================== */
.coin-detail-page {
    max-width: 1000px;
}

.coin-header {
    display: flex;
    justify-content: space-between;
    align-items: center;
    padding: var(--spacing-xl);
    background: var(--color-bg-card);
    border: 1px solid var(--color-border);
    border-radius: var(--radius-lg);
    margin-bottom: var(--spacing-lg);
}

.coin-title {
    display: flex;
    align-items: center;
    gap: var(--spacing-md);
}

.coin-header .coin-icon {
    width: 56px;
    height: 56px;
    font-size: var(--font-size-lg);
}

.coin-name-container {
    display: flex;
    flex-direction: column;
}

.coin-name-container .coin-name {
    font-size: var(--font-size-2xl);
    font-weight: 700;
}

.coin-name-container .coin-symbol {
    font-size: var(--font-size-sm);
    color: var(--color-text-muted);
}

.coin-price-main {
    display: flex;
    flex-direction: column;
    align-items: flex-end;
    gap: var(--spacing-xs);
}

.coin-price-main .price-value {
    font-size: var(--font-size-3xl);
    font-weight: 700;
}

.coin-price-main .price-change {
    font-size: var(--font-size-lg);
}

/* Stats Grid */
.coin-stats-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(200px, 1fr));
    gap: var(--spacing-md);
    margin-bottom: var(--spacing-xl);
}

.stat-card {
    padding: var(--spacing-lg);
    background: var(--color-bg-card);
    border: 1px solid var(--color-border);
    border-radius: var(--radius-lg);
}

.stat-card-label {
    font-size: var(--font-size-xs);
    color: var(--color-text-muted);
    text-transform: uppercase;
    letter-spacing: 0.05em;
    margin-bottom: var(--spacing-xs);
}

.stat-card-value {
    font-size: var(--font-size-xl);
    font-weight: 600;
    color: var(--color-text-primary);
}

/* Exchange Prices Section */
.exchange-prices-section {
    margin-top: var(--spacing-xl);
}

.section-title {
    font-size: var(--font-size-lg);
    font-weight: 600;
    margin-bottom: var(--spacing-md);
    color: var(--color-text-primary);
}

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

.exchange-card {
    padding: var(--spacing-lg);
    background: var(--color-bg-card);
    border: 1px solid var(--color-border);
    border-radius: var(--radius-lg);
    transition: all var(--transition-base);
}

.exchange-card:hover {
    border-color: var(--color-accent-primary);
    box-shadow: var(--shadow-glow);
}

.exchange-name {
    font-size: var(--font-size-sm);
    font-weight: 600;
    color: var(--color-text-secondary);
    margin-bottom: var(--spacing-sm);
    text-transform: capitalize;
}

.exchange-price {
    font-size: var(--font-size-xl);
    font-weight: 700;
    color: var(--color-text-primary);
    margin-bottom: var(--spacing-xs);
}

.exchange-change {
    font-size: var(--font-size-sm);
    font-weight: 600;
    margin-bottom: var(--spacing-xs);
}

.exchange-change.positive {
    color: var(--color-positive);
}

.exchange-change.negative {
    color: var(--color-negative);
}

.exchange-volume {
    font-size: var(--font-size-xs);
    color: var(--color-text-muted);
}

/* =====================================
   Price Flash Animation
   ===================================== */
@keyframes flash-green {
    0% {
        background-color: transparent;
    }

    50% {
        background-color: var(--color-positive-bg);
    }

    100% {
        background-color: transparent;
    }
}

@keyframes flash-red {
    0% {
        background-color: transparent;
    }

    50% {
        background-color: var(--color-negative-bg);
    }

    100% {
        background-color: transparent;
    }
}

.flash-up {
    animation: flash-green 0.5s ease;
}

.flash-down {
    animation: flash-red 0.5s ease;
}

/* =====================================
   Responsive Design
   ===================================== */
@media (max-width: 1024px) {
    .header-content {
        padding: var(--spacing-sm) var(--spacing-md);
        gap: var(--spacing-md);
    }

    .search-container {
        max-width: 300px;
    }

    .main-content {
        padding: var(--spacing-md);
    }
}

@media (max-width: 768px) {
    .header-content {
        flex-wrap: wrap;
    }

    .search-container {
        order: 3;
        max-width: 100%;
        flex: 1 0 100%;
        margin-top: var(--spacing-sm);
    }

    .logo-text {
        font-size: var(--font-size-lg);
    }

    .stats-content {
        padding: var(--spacing-sm) var(--spacing-md);
        gap: var(--spacing-md);
    }

    .crypto-table {
        font-size: var(--font-size-xs);
    }

    .crypto-table th,
    .crypto-table td {
        padding: var(--spacing-sm);
    }

    .col-volume,
    .col-market-cap {
        display: none;
    }

    .coin-header {
        flex-direction: column;
        gap: var(--spacing-lg);
        text-align: center;
    }

    .coin-title {
        flex-direction: column;
    }

    .coin-price-main {
        align-items: center;
    }
}

@media (max-width: 480px) {
    .col-exchanges {
        display: none;
    }

    .coin-cell {
        gap: var(--spacing-xs);
    }

    .coin-icon {
        width: 28px;
        height: 28px;
        font-size: 10px;
    }

    .stat-item:nth-child(n+4) {
        display: none;
    }
}

/* =====================================
   Mobile Navigation Menu
   ===================================== */

/* Hide mobile-only elements on desktop */
.mobile-menu-toggle,
.mobile-search-toggle,
.mobile-search-close {
    display: none;
}

/* Mobile Menu Toggle Button - base styles */
.mobile-menu-toggle {
    align-items: center;
    justify-content: center;
    width: 44px;
    height: 44px;
    padding: 0;
    background: var(--color-bg-tertiary);
    border: 1px solid var(--color-border);
    border-radius: var(--radius-md);
    cursor: pointer;
    color: var(--color-text-secondary);
    transition: all var(--transition-fast);
}

.mobile-menu-toggle:hover {
    color: var(--color-text-primary);
    border-color: var(--color-accent-primary);
}

.mobile-menu-toggle svg {
    width: 24px;
    height: 24px;
}

/* Navigation Drawer */
.nav-drawer {
    display: none;
}

.nav-overlay {
    display: none;
}

/* Mobile Styles */
@media (max-width: 768px) {

    /* Show mobile menu toggle and push to right */
    .header-actions {
        flex: 1;
        justify-content: flex-end;
    }

    .mobile-menu-toggle {
        display: flex;
    }

    /* Mobile Search Toggle Button */
    .mobile-search-toggle {
        display: flex;
        align-items: center;
        justify-content: center;
        width: 44px;
        height: 44px;
        padding: 0;
        background: var(--color-bg-tertiary);
        border: 1px solid var(--color-border);
        border-radius: var(--radius-md);
        cursor: pointer;
        color: var(--color-text-secondary);
        transition: all var(--transition-fast);
    }

    .mobile-search-toggle:hover {
        color: var(--color-text-primary);
        border-color: var(--color-accent-primary);
    }

    .mobile-search-toggle svg {
        width: 20px;
        height: 20px;
    }

    /* Hide desktop search by default on mobile */
    .search-container {
        display: none;
        position: fixed;
        top: 0;
        left: 0;
        right: 0;
        z-index: 1001;
        padding: var(--spacing-md);
        background: var(--color-bg-secondary);
        border-bottom: 1px solid var(--color-border);
    }

    .search-container.mobile-active {
        display: block;
    }

    .search-container.mobile-active .search-input {
        width: 100%;
        padding-right: 44px;
    }

    /* Close button for mobile search */
    .mobile-search-close {
        position: absolute;
        right: var(--spacing-md);
        top: 50%;
        transform: translateY(-50%);
        display: none;
        align-items: center;
        justify-content: center;
        width: 36px;
        height: 36px;
        background: var(--color-bg-tertiary);
        border: none;
        border-radius: var(--radius-md);
        color: var(--color-text-secondary);
        cursor: pointer;
    }

    .search-container.mobile-active .mobile-search-close {
        display: flex;
    }

    /* Hide desktop nav items */
    .header-actions .portfolio-link,
    .header-actions .nav-link,
    .header-actions .watchlist-btn,
    .header-actions .currency-selector,
    .header-actions .language-selector,
    .header-actions .login-link,
    .header-actions .user-menu,
    #user-menu,
    #login-link {
        display: none !important;
    }

    /* Navigation Overlay */
    .nav-overlay {
        display: block;
        position: fixed;
        top: 0;
        left: 0;
        right: 0;
        bottom: 0;
        background: rgba(0, 0, 0, 0.6);
        backdrop-filter: blur(4px);
        opacity: 0;
        visibility: hidden;
        transition: all var(--transition-base);
        z-index: 998;
    }

    .nav-overlay.active {
        opacity: 1;
        visibility: visible;
    }

    /* Navigation Drawer */
    .nav-drawer {
        display: flex;
        flex-direction: column;
        position: fixed;
        top: 0;
        right: -280px;
        width: 280px;
        height: 100vh;
        background: var(--color-bg-secondary);
        border-left: 1px solid var(--color-border);
        padding: var(--spacing-lg);
        transition: right var(--transition-slow);
        z-index: 999;
        overflow-y: auto;
    }

    .nav-drawer.open {
        right: 0;
    }

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

    .nav-drawer-title {
        font-size: var(--font-size-lg);
        font-weight: 600;
    }

    .nav-drawer-close {
        display: flex;
        align-items: center;
        justify-content: center;
        width: 36px;
        height: 36px;
        background: var(--color-bg-tertiary);
        border: none;
        border-radius: var(--radius-md);
        color: var(--color-text-secondary);
        cursor: pointer;
        transition: all var(--transition-fast);
    }

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

    .nav-drawer-close svg {
        width: 20px;
        height: 20px;
    }

    .nav-drawer-links {
        display: flex;
        flex-direction: column;
        gap: var(--spacing-xs);
    }

    .nav-drawer-link {
        display: flex;
        align-items: center;
        gap: var(--spacing-md);
        padding: var(--spacing-md);
        font-size: var(--font-size-base);
        font-weight: 500;
        color: var(--color-text-secondary);
        text-decoration: none;
        border-radius: var(--radius-md);
        transition: all var(--transition-fast);
    }

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

    .nav-drawer-link svg {
        width: 22px;
        height: 22px;
        flex-shrink: 0;
    }

    /* Button reset for nav drawer link buttons */
    button.nav-drawer-link {
        width: 100%;
        background: none;
        border: none;
        cursor: pointer;
        text-align: left;
        font-family: inherit;
    }

    .nav-drawer-divider {
        height: 1px;
        background: var(--color-border);
        margin: var(--spacing-md) 0;
    }

    .nav-drawer-section-title {
        font-size: var(--font-size-xs);
        font-weight: 600;
        text-transform: uppercase;
        letter-spacing: 0.05em;
        color: var(--color-text-muted);
        margin-bottom: var(--spacing-sm);
        padding: 0 var(--spacing-md);
    }

    /* Selectors in drawer */
    .nav-drawer-selectors {
        display: flex;
        flex-direction: column;
        gap: var(--spacing-sm);
        margin-top: var(--spacing-md);
    }

    .nav-drawer-selectors select {
        width: 100%;
        padding: var(--spacing-sm) var(--spacing-md);
        font-size: var(--font-size-sm);
        color: var(--color-text-primary);
        background: var(--color-bg-tertiary);
        border: 1px solid var(--color-border);
        border-radius: var(--radius-md);
    }

    /* Mobile Profile Section */
    .nav-drawer-profile {
        padding: 0 var(--spacing-md);
    }

    .nav-drawer-profile-guest {
        display: flex;
        flex-direction: column;
        gap: var(--spacing-sm);
    }

    .nav-drawer-signin-btn {
        display: flex;
        align-items: center;
        justify-content: center;
        gap: var(--spacing-sm);
        padding: var(--spacing-md);
        font-size: var(--font-size-base);
        font-weight: 600;
        color: white;
        background: linear-gradient(135deg, var(--color-accent-primary), var(--color-accent-secondary));
        border-radius: var(--radius-md);
        text-decoration: none;
        transition: all var(--transition-fast);
    }

    .nav-drawer-signin-btn:hover {
        transform: translateY(-1px);
        box-shadow: var(--shadow-glow);
    }

    .nav-drawer-signin-btn svg {
        width: 20px;
        height: 20px;
    }

    .nav-drawer-signup-link {
        text-align: center;
        font-size: var(--font-size-sm);
        color: var(--color-text-muted);
        text-decoration: none;
    }

    .nav-drawer-signup-link:hover {
        color: var(--color-accent-primary);
    }

    .nav-drawer-profile-user {
        display: flex;
        flex-direction: column;
        gap: var(--spacing-md);
    }

    .nav-drawer-user-info {
        display: flex;
        align-items: center;
        gap: var(--spacing-md);
        padding: var(--spacing-sm);
        background: var(--color-bg-tertiary);
        border-radius: var(--radius-md);
    }

    .nav-drawer-avatar {
        width: 44px;
        height: 44px;
        display: flex;
        align-items: center;
        justify-content: center;
        font-size: var(--font-size-lg);
        font-weight: 700;
        color: white;
        background: linear-gradient(135deg, var(--color-accent-primary), var(--color-accent-secondary));
        border-radius: var(--radius-full);
    }

    .nav-drawer-user-details {
        display: flex;
        flex-direction: column;
        gap: 2px;
    }

    .nav-drawer-user-name {
        font-weight: 600;
        color: var(--color-text-primary);
    }

    .nav-drawer-user-email {
        font-size: var(--font-size-xs);
        color: var(--color-text-muted);
    }

    .nav-drawer-user-actions {
        display: flex;
        flex-direction: column;
        gap: var(--spacing-xs);
    }

    .nav-drawer-signout {
        color: var(--color-danger) !important;
    }

    /* Table improvements for mobile */
    .table-container {
        overflow-x: auto;
        -webkit-overflow-scrolling: touch;
        margin: 0 calc(-1 * var(--spacing-md));
        padding: 0 var(--spacing-md);
    }

    .crypto-table {
        min-width: 500px;
    }

    /* Hide sparkline column on mobile */
    .col-sparkline {
        display: none;
    }

    /* Larger touch targets */
    .watchlist-star {
        padding: var(--spacing-sm);
        min-width: 44px;
        min-height: 44px;
    }

    /* Pagination improvements */
    .pagination-container {
        flex-direction: column;
        gap: var(--spacing-md);
    }

    .pagination-btn {
        width: 100%;
        justify-content: center;
    }

    /* =========================================
       MOBILE CARD-BASED CRYPTO LIST
       ========================================= */

    /* Hide trending and converter on mobile - coins first! */
    #trending-section,
    #converter-container {
        display: none;
    }

    /* Hide traditional crypto table on mobile (homepage only) */
    #crypto-table {
        display: none;
    }

    /* Show mobile card list */
    .mobile-crypto-list {
        display: flex;
        flex-direction: column;
        gap: var(--spacing-sm);
    }

    .mobile-crypto-card {
        background: var(--color-bg-card);
        border: 1px solid var(--color-border);
        border-radius: var(--radius-lg);
        padding: var(--spacing-md);
        display: flex;
        flex-direction: column;
        gap: var(--spacing-sm);
        transition: all var(--transition-fast);
        cursor: pointer;
    }

    .mobile-crypto-card:hover {
        border-color: var(--color-accent-primary);
        transform: translateY(-2px);
        box-shadow: 0 8px 24px rgba(99, 102, 241, 0.15);
    }

    .mobile-crypto-card:active {
        transform: translateY(0);
    }

    .mobile-card-main {
        display: flex;
        align-items: center;
        justify-content: space-between;
    }

    .mobile-card-left {
        display: flex;
        align-items: center;
        gap: var(--spacing-sm);
    }

    .mobile-card-rank {
        font-size: var(--font-size-xs);
        color: var(--color-text-muted);
        min-width: 24px;
    }

    .mobile-card-icon {
        width: 36px;
        height: 36px;
        border-radius: var(--radius-full);
        background: var(--color-bg-tertiary);
        object-fit: contain;
    }

    .mobile-card-info {
        display: flex;
        flex-direction: column;
        gap: 2px;
    }

    .mobile-card-name {
        font-weight: 600;
        font-size: var(--font-size-sm);
        color: var(--color-text-primary);
    }

    .mobile-card-symbol {
        font-size: var(--font-size-xs);
        color: var(--color-text-muted);
        text-transform: uppercase;
    }

    .mobile-card-right {
        display: flex;
        flex-direction: column;
        align-items: flex-end;
        gap: 2px;
    }

    .mobile-card-price {
        font-weight: 600;
        font-size: var(--font-size-base);
        color: var(--color-text-primary);
    }

    .mobile-card-change {
        font-size: var(--font-size-sm);
        font-weight: 500;
        padding: 2px 8px;
        border-radius: var(--radius-sm);
    }

    .mobile-card-change.positive {
        color: var(--color-positive);
        background: rgba(34, 197, 94, 0.1);
    }

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

    .mobile-card-details {
        display: flex;
        justify-content: space-between;
        padding-top: var(--spacing-xs);
        border-top: 1px solid var(--color-border);
    }

    .mobile-card-stat {
        display: flex;
        flex-direction: column;
        gap: 2px;
    }

    .mobile-stat-label {
        font-size: 10px;
        color: var(--color-text-muted);
        text-transform: uppercase;
        letter-spacing: 0.05em;
    }

    .mobile-stat-value {
        font-size: var(--font-size-xs);
        font-weight: 500;
        color: var(--color-text-secondary);
    }

    /* Mobile sparkline container */
    .mobile-card-sparkline {
        height: 40px;
        width: 100%;
        margin-top: var(--spacing-xs);
    }

    /* =========================================
       ENHANCED STATS CAROUSEL
       ========================================= */
    .stats-bar {
        background: linear-gradient(180deg, var(--color-bg-secondary) 0%, var(--color-bg-primary) 100%);
        border-bottom: 1px solid var(--color-border);
        padding: 0;
    }

    .stats-content {
        display: flex;
        gap: var(--spacing-md);
        padding: var(--spacing-sm) var(--spacing-md);
        overflow-x: auto;
        scroll-snap-type: x mandatory;
        -webkit-overflow-scrolling: touch;
        scrollbar-width: none;
    }

    .stats-content::-webkit-scrollbar {
        display: none;
    }

    .stat-item {
        flex: 0 0 auto;
        scroll-snap-align: start;
        display: flex;
        flex-direction: column;
        gap: 2px;
        padding: var(--spacing-sm) var(--spacing-md);
        background: var(--color-bg-card);
        border-radius: var(--radius-md);
        border: 1px solid var(--color-border);
        min-width: 120px;
    }

    .stat-label {
        font-size: 10px;
        text-transform: uppercase;
        letter-spacing: 0.05em;
        color: var(--color-text-muted);
    }

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

    /* Pulse animation for live updates */
    .stat-value.updating {
        animation: pulse 0.5s ease-in-out;
    }

    @keyframes pulse {

        0%,
        100% {
            opacity: 1;
        }

        50% {
            opacity: 0.5;
        }
    }

    /* =========================================
       TRENDING SECTION ENHANCEMENTS
       ========================================= */
    .trending-section {
        padding: 0;
    }

    .trending-grid {
        display: flex;
        gap: var(--spacing-sm);
        overflow-x: auto;
        scroll-snap-type: x mandatory;
        -webkit-overflow-scrolling: touch;
        padding: var(--spacing-sm);
        scrollbar-width: none;
    }

    .trending-grid::-webkit-scrollbar {
        display: none;
    }

    .trending-card {
        flex: 0 0 280px;
        scroll-snap-align: start;
        background: var(--color-bg-card);
        border: 1px solid var(--color-border);
        border-radius: var(--radius-lg);
        padding: var(--spacing-md);
    }

    .trending-title {
        font-size: var(--font-size-sm);
        margin-bottom: var(--spacing-sm);
    }

    .trending-item {
        display: flex;
        align-items: center;
        gap: var(--spacing-sm);
        padding: var(--spacing-xs) 0;
    }

    /* =========================================
       MICRO-ANIMATIONS & TRANSITIONS
       ========================================= */

    /* Smooth fade-in for cards */
    .mobile-crypto-card {
        animation: fadeInUp 0.3s ease-out;
    }

    @keyframes fadeInUp {
        from {
            opacity: 0;
            transform: translateY(10px);
        }

        to {
            opacity: 1;
            transform: translateY(0);
        }
    }

    /* Staggered animation for list items */
    .mobile-crypto-card:nth-child(1) {
        animation-delay: 0.02s;
    }

    .mobile-crypto-card:nth-child(2) {
        animation-delay: 0.04s;
    }

    .mobile-crypto-card:nth-child(3) {
        animation-delay: 0.06s;
    }

    .mobile-crypto-card:nth-child(4) {
        animation-delay: 0.08s;
    }

    .mobile-crypto-card:nth-child(5) {
        animation-delay: 0.10s;
    }

    /* Page container adjustments */
    .main-content {
        padding: var(--spacing-sm);
    }

    /* Category filters horizontal scroll */
    .category-filter {
        display: flex;
        gap: var(--spacing-xs);
        overflow-x: auto;
        padding: var(--spacing-sm) var(--spacing-sm);
        scrollbar-width: none;
        margin: 0 calc(-1 * var(--spacing-sm));
    }

    .category-filter::-webkit-scrollbar {
        display: none;
    }

    .category-btn {
        flex: 0 0 auto;
        padding: var(--spacing-xs) var(--spacing-md);
        font-size: var(--font-size-xs);
        border-radius: var(--radius-full);
        white-space: nowrap;
    }
}

/* Small mobile - 480px and below */
@media (max-width: 480px) {
    .header-content {
        padding: var(--spacing-sm);
        gap: var(--spacing-sm);
    }

    .logo-text {
        font-size: var(--font-size-base);
    }

    .logo-icon {
        width: 28px;
        height: 28px;
    }

    .search-container {
        order: 3;
        flex: 1 0 100%;
        max-width: 100%;
        margin-top: var(--spacing-xs);
    }

    .main-content {
        padding: var(--spacing-xs);
    }

    /* Smaller cards on tiny screens */
    .mobile-crypto-card {
        padding: var(--spacing-sm);
    }

    .mobile-card-icon {
        width: 32px;
        height: 32px;
    }

    .mobile-card-price {
        font-size: var(--font-size-sm);
    }

    .stat-item {
        min-width: 100px;
        padding: var(--spacing-xs) var(--spacing-sm);
    }

    .trending-card {
        flex: 0 0 250px;
    }
}

/* =========================================
   DESKTOP: Hide mobile-only elements
   ========================================= */
@media (min-width: 769px) {
    .mobile-crypto-list {
        display: none !important;
    }

    .table-container {
        display: block !important;
    }
}