/* ==================== GLOBAL STYLES ==================== */
* {
    margin: 0;
    padding: 0;
    box-sizing: border-box;
}

:root {
    --primary-color: #f7931a;
    --secondary-color: #4a90e2;
    --success-color: #16c784;
    --danger-color: #ea3943;
    --dark-bg: #0f1419;
    --card-bg: #1a1f29;
    --text-primary: #ffffff;
    --text-secondary: #8e9296;
    --border-color: #2a2f3a;
    --hover-bg: #252b38;
    --shadow: 0 4px 20px rgba(0, 0, 0, 0.3);
    --transition: all 0.3s ease;
}

body {
    font-family: 'Inter', -apple-system, BlinkMacSystemFont, 'Segoe UI', sans-serif;
    background: linear-gradient(135deg, #0f1419 0%, #1a1f29 100%);
    color: var(--text-primary);
    line-height: 1.6;
    min-height: 100vh;
}

.container {
    max-width: 1400px;
    margin: 0 auto;
    padding: 0 20px;
}

a {
    text-decoration: none;
    color: inherit;
    transition: var(--transition);
}

/* ==================== NAVBAR ==================== */
.navbar {
    background: var(--card-bg);
    padding: 1rem 0;
    box-shadow: var(--shadow);
    position: sticky;
    top: 0;
    z-index: 1000;
    border-bottom: 1px solid var(--border-color);
}

.navbar .container {
    display: flex;
    justify-content: space-between;
    align-items: center;
}

.navbar-brand .logo {
    display: flex;
    align-items: center;
    gap: 10px;
    font-size: 1.5rem;
    font-weight: 700;
    color: var(--primary-color);
}

.navbar-brand .logo img {
    width: 40px;
    height: 40px;
}

.mobile-menu-toggle {
    display: none;
    background: none;
    border: none;
    color: var(--text-primary);
    font-size: 1.5rem;
    cursor: pointer;
}

.navbar-menu {
    display: flex;
    align-items: center;
    gap: 2rem;
}

.navbar-search {
    position: relative;
}

.navbar-search input {
    background: var(--dark-bg);
    border: 1px solid var(--border-color);
    padding: 0.6rem 2.5rem 0.6rem 1rem;
    border-radius: 8px;
    color: var(--text-primary);
    width: 300px;
    transition: var(--transition);
}

.navbar-search input:focus {
    outline: none;
    border-color: var(--primary-color);
    box-shadow: 0 0 0 3px rgba(247, 147, 26, 0.1);
}

.navbar-search i {
    position: absolute;
    right: 1rem;
    top: 50%;
    transform: translateY(-50%);
    color: var(--text-secondary);
}

.search-results {
    position: absolute;
    top: 100%;
    left: 0;
    right: 0;
    background: var(--card-bg);
    border: 1px solid var(--border-color);
    border-radius: 8px;
    margin-top: 0.5rem;
    max-height: 400px;
    overflow-y: auto;
    display: none;
    box-shadow: var(--shadow);
}

.search-results.active {
    display: block;
}

.navbar-nav {
    display: flex;
    list-style: none;
    gap: 1.5rem;
}

.navbar-nav a {
    color: var(--text-secondary);
    font-weight: 500;
    padding: 0.5rem 1rem;
    border-radius: 6px;
    transition: var(--transition);
}

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

/* ==================== MAIN CONTENT ==================== */
.main-content {
    min-height: calc(100vh - 300px);
    padding: 2rem 0;
}

/* ==================== MARKET OVERVIEW ==================== */
.market-overview {
    margin-bottom: 2rem;
}

.stat-cards {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(250px, 1fr));
    gap: 1.5rem;
}

.stat-card {
    background: var(--card-bg);
    padding: 1.5rem;
    border-radius: 12px;
    display: flex;
    align-items: center;
    gap: 1rem;
    border: 1px solid var(--border-color);
    transition: var(--transition);
}

.stat-card:hover {
    transform: translateY(-5px);
    box-shadow: var(--shadow);
}

.stat-icon {
    width: 60px;
    height: 60px;
    background: linear-gradient(135deg, var(--primary-color), #ffa726);
    border-radius: 12px;
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: 1.5rem;
}

.stat-card.positive .stat-icon {
    background: linear-gradient(135deg, var(--success-color), #4ade80);
}

.stat-card.negative .stat-icon {
    background: linear-gradient(135deg, var(--danger-color), #f87171);
}

.stat-info h3 {
    font-size: 1.8rem;
    font-weight: 700;
    margin-bottom: 0.25rem;
}

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

/* ==================== COINS SECTION ==================== */
.coins-section {
    background: var(--card-bg);
    padding: 2rem;
    border-radius: 12px;
    border: 1px solid var(--border-color);
    margin-bottom: 2rem;
}

.section-header {
    display: flex;
    justify-content: space-between;
    align-items: center;
    margin-bottom: 1.5rem;
}

.section-header h2 {
    font-size: 1.5rem;
    display: flex;
    align-items: center;
    gap: 0.5rem;
}

.view-options {
    display: flex;
    gap: 0.5rem;
}

.view-btn {
    background: var(--dark-bg);
    border: 1px solid var(--border-color);
    padding: 0.5rem 1rem;
    border-radius: 6px;
    color: var(--text-secondary);
    cursor: pointer;
    transition: var(--transition);
}

.view-btn.active,
.view-btn:hover {
    background: var(--primary-color);
    color: var(--text-primary);
    border-color: var(--primary-color);
}

/* ==================== TABLE ==================== */
.table-responsive {
    overflow-x: auto;
}

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

.coins-table thead {
    background: var(--dark-bg);
}

.coins-table th {
    padding: 1rem;
    text-align: left;
    font-weight: 600;
    color: var(--text-secondary);
    font-size: 0.85rem;
    text-transform: uppercase;
    letter-spacing: 0.5px;
}

.coins-table tbody tr {
    border-bottom: 1px solid var(--border-color);
    transition: var(--transition);
}

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

.coins-table td {
    padding: 1rem;
}

.rank {
    font-weight: 600;
    color: var(--text-secondary);
}

.coin-info {
    min-width: 200px;
}

.coin-link {
    display: flex;
    align-items: center;
    gap: 0.75rem;
}

.coin-link img {
    width: 32px;
    height: 32px;
    border-radius: 50%;
}

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

.coin-symbol {
    display: block;
    font-size: 0.85rem;
    color: var(--text-secondary);
    text-transform: uppercase;
}

.price {
    font-weight: 600;
    font-size: 1.1rem;
}

.change {
    font-weight: 600;
}

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

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

.market-cap,
.volume,
.supply {
    color: var(--text-secondary);
}

.sparkline canvas {
    max-width: 120px;
    height: 40px;
}

.actions {
    display: flex;
    gap: 0.5rem;
}

.btn-icon {
    background: var(--dark-bg);
    border: 1px solid var(--border-color);
    padding: 0.5rem;
    border-radius: 6px;
    color: var(--text-secondary);
    cursor: pointer;
    transition: var(--transition);
    display: inline-flex;
    align-items: center;
    justify-content: center;
}

.btn-icon:hover {
    background: var(--primary-color);
    color: var(--text-primary);
    border-color: var(--primary-color);
}

.watchlist-btn.active i {
    color: var(--primary-color);
}

/* ==================== PAGINATION ==================== */
.pagination {
    display: flex;
    justify-content: center;
    gap: 0.5rem;
    margin-top: 2rem;
}

.page-link {
    background: var(--dark-bg);
    border: 1px solid var(--border-color);
    padding: 0.5rem 1rem;
    border-radius: 6px;
    color: var(--text-secondary);
    transition: var(--transition);
}

.page-link:hover,
.page-link.active {
    background: var(--primary-color);
    color: var(--text-primary);
    border-color: var(--primary-color);
}

/* ==================== INFO BANNER ==================== */
.info-banner {
    background: linear-gradient(135deg, var(--secondary-color), #5a67d8);
    padding: 2rem;
    border-radius: 12px;
    margin-bottom: 2rem;
}

.info-content {
    display: flex;
    align-items: center;
    gap: 1.5rem;
}

.info-content i {
    font-size: 3rem;
}

.info-content h3 {
    margin-bottom: 0.5rem;
}

/* ==================== FOOTER ==================== */
.footer {
    background: var(--card-bg);
    border-top: 1px solid var(--border-color);
    padding: 3rem 0 1rem;
    margin-top: 3rem;
}

.footer-content {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(250px, 1fr));
    gap: 2rem;
    margin-bottom: 2rem;
}

.footer-section h3,
.footer-section h4 {
    margin-bottom: 1rem;
    color: var(--primary-color);
}

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

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

.footer-section ul li {
    margin-bottom: 0.5rem;
}

.footer-section ul li a {
    color: var(--text-secondary);
}

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

.social-links {
    display: flex;
    gap: 1rem;
    margin-top: 1rem;
}

.social-links a {
    width: 40px;
    height: 40px;
    background: var(--dark-bg);
    border-radius: 50%;
    display: flex;
    align-items: center;
    justify-content: center;
    color: var(--text-secondary);
    transition: var(--transition);
}

.social-links a:hover {
    background: var(--primary-color);
    color: var(--text-primary);
}

.footer-disclaimer {
    margin-top: 1rem;
    padding: 1rem;
    background: var(--dark-bg);
    border-radius: 6px;
    border-left: 3px solid var(--primary-color);
}

.footer-bottom {
    text-align: center;
    padding-top: 2rem;
    border-top: 1px solid var(--border-color);
    color: var(--text-secondary);
}

.footer-bottom a {
    color: var(--primary-color);
}

/* ==================== RESPONSIVE ==================== */
@media (max-width: 1024px) {
    .navbar-search input {
        width: 200px;
    }
}

@media (max-width: 768px) {
    .mobile-menu-toggle {
        display: block;
    }
    
    .navbar-menu {
        position: fixed;
        top: 70px;
        left: 0;
        right: 0;
        background: var(--card-bg);
        flex-direction: column;
        padding: 1rem;
        transform: translateX(-100%);
        transition: var(--transition);
        border-bottom: 1px solid var(--border-color);
    }
    
    .navbar-menu.active {
        transform: translateX(0);
    }
    
    .navbar-search input {
        width: 100%;
    }
    
    .navbar-nav {
        flex-direction: column;
        width: 100%;
    }
    
    .navbar-nav a {
        width: 100%;
    }
    
    .coins-table {
        font-size: 0.85rem;
    }
    
    .coins-table th,
    .coins-table td {
        padding: 0.75rem 0.5rem;
    }
    
    .sparkline,
    .supply {
        display: none;
    }
    
    .stat-cards {
        grid-template-columns: repeat(2, 1fr);
    }
}

@media (max-width: 480px) {
    .stat-cards {
        grid-template-columns: 1fr;
    }
    
    .coin-link img {
        width: 24px;
        height: 24px;
    }
    
    .section-header {
        flex-direction: column;
        gap: 1rem;
    }
}

/* ==================== LOADING ANIMATION ==================== */
.loading {
    display: inline-block;
    width: 20px;
    height: 20px;
    border: 3px solid var(--border-color);
    border-radius: 50%;
    border-top-color: var(--primary-color);
    animation: spin 1s ease-in-out infinite;
}

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

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

.mt-1 { margin-top: 1rem; }
.mt-2 { margin-top: 2rem; }
.mb-1 { margin-bottom: 1rem; }
.mb-2 { margin-bottom: 2rem; }

.btn {
    padding: 0.75rem 1.5rem;
    border-radius: 8px;
    border: none;
    cursor: pointer;
    font-weight: 600;
    transition: var(--transition);
}

.btn-primary {
    background: var(--primary-color);
    color: var(--text-primary);
}

.btn-primary:hover {
    background: #e08516;
}

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

.btn-secondary:hover {
    background: #3a7bc8;
}