/* ============================================
   EVERY COIN MATTERS - CSS
   Mobile-first, dark mode, blazing fast
   ============================================ */

/* CSS Variables */
:root {
    --color-bg: #0f0f1a;
    --color-bg-alt: #141428;
    --color-card: #1a1a2e;
    --color-card-hover: #222240;
    --color-primary: #1a1a2e;
    --color-secondary: #16213e;
    --color-accent: #00d4ff;
    --color-accent-2: #7b2cbf;
    --color-text: #e4e4e7;
    --color-text-muted: #71717a;
    --color-success: #22c55e;
    --color-danger: #ef4444;
    --color-warning: #f59e0b;
    --color-border: #2a2a4a;
    
    --font-heading: 'Space Grotesk', -apple-system, sans-serif;
    --font-body: 'Inter', -apple-system, sans-serif;
    --font-mono: 'JetBrains Mono', monospace;
    
    --radius-sm: 6px;
    --radius-md: 12px;
    --radius-lg: 16px;
    --radius-xl: 24px;
    
    --shadow-sm: 0 2px 8px rgba(0,0,0,0.3);
    --shadow-md: 0 4px 16px rgba(0,0,0,0.4);
    --shadow-lg: 0 8px 32px rgba(0,0,0,0.5);
    --shadow-glow: 0 0 20px rgba(0,212,255,0.3);
    
    --transition: 0.2s ease;
}

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

html {
    scroll-behavior: smooth;
    -webkit-text-size-adjust: 100%;
}

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

/* Container */
.container {
    width: 100%;
    max-width: 1200px;
    margin: 0 auto;
    padding: 0 16px;
}

@media (min-width: 768px) {
    .container {
        padding: 0 24px;
    }
}

/* Typography */
h1, h2, h3, h4, h5, h6 {
    font-family: var(--font-heading);
    font-weight: 600;
    line-height: 1.2;
}

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

a:hover {
    color: #33ddff;
}

/* ============================================
   NAVIGATION
   ============================================ */
.navbar {
    position: sticky;
    top: 0;
    z-index: 1000;
    background: rgba(15, 15, 26, 0.95);
    backdrop-filter: blur(12px);
    border-bottom: 1px solid var(--color-border);
    padding: 12px 0;
}

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

.logo {
    display: flex;
    align-items: center;
    gap: 8px;
    font-family: var(--font-heading);
    font-size: 1.25rem;
    font-weight: 700;
    color: var(--color-text);
}

.logo:hover {
    color: var(--color-text);
}

.logo-icon {
    font-size: 1.5rem;
}

.logo-text .accent {
    color: var(--color-accent);
}

.nav-links {
    display: none;
    list-style: none;
    gap: 32px;
}

.nav-links a {
    color: var(--color-text-muted);
    font-weight: 500;
    font-size: 0.95rem;
    transition: color var(--transition);
}

.nav-links a:hover,
.nav-links a.active {
    color: var(--color-accent);
}

.mobile-menu-btn {
    display: flex;
    flex-direction: column;
    gap: 5px;
    background: none;
    border: none;
    cursor: pointer;
    padding: 8px;
}

.mobile-menu-btn span {
    width: 24px;
    height: 2px;
    background: var(--color-text);
    transition: var(--transition);
}

@media (min-width: 768px) {
    .nav-links {
        display: flex;
    }
    .mobile-menu-btn {
        display: none;
    }
}

/* Mobile Menu */
.nav-links.active {
    display: flex;
    flex-direction: column;
    position: absolute;
    top: 100%;
    left: 0;
    right: 0;
    background: var(--color-bg);
    padding: 24px;
    gap: 16px;
    border-bottom: 1px solid var(--color-border);
}

/* ============================================
   HERO SECTION
   ============================================ */
.hero {
    padding: 48px 0 32px;
    text-align: center;
    background: linear-gradient(180deg, var(--color-bg) 0%, var(--color-bg-alt) 100%);
}

.hero-title {
    font-size: clamp(2rem, 6vw, 3.5rem);
    margin-bottom: 16px;
    letter-spacing: -0.02em;
}

.hero-title .accent {
    color: var(--color-accent);
    text-shadow: 0 0 30px rgba(0,212,255,0.4);
}

.hero-subtitle {
    font-size: clamp(1rem, 2.5vw, 1.25rem);
    color: var(--color-text-muted);
    max-width: 600px;
    margin: 0 auto 32px;
}

.hero-cta {
    display: flex;
    flex-wrap: wrap;
    gap: 12px;
    justify-content: center;
}

/* Buttons */
.btn {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    padding: 12px 24px;
    font-family: var(--font-body);
    font-size: 0.95rem;
    font-weight: 600;
    border-radius: var(--radius-md);
    border: none;
    cursor: pointer;
    transition: all var(--transition);
}

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

.btn-primary:hover {
    background: #33ddff;
    color: var(--color-bg);
    box-shadow: var(--shadow-glow);
    transform: translateY(-2px);
}

.btn-secondary {
    background: transparent;
    color: var(--color-accent);
    border: 2px solid var(--color-accent);
}

.btn-secondary:hover {
    background: rgba(0,212,255,0.1);
    color: var(--color-accent);
}

/* ============================================
   STATS SECTION
   ============================================ */
.stats-section {
    padding: 24px 0;
    background: var(--color-bg-alt);
    border-top: 1px solid var(--color-border);
    border-bottom: 1px solid var(--color-border);
}

.stats-grid {
    display: grid;
    grid-template-columns: repeat(2, 1fr);
    gap: 12px;
}

@media (min-width: 768px) {
    .stats-grid {
        grid-template-columns: repeat(4, 1fr);
        gap: 16px;
    }
}

.stat-card {
    background: var(--color-card);
    border-radius: var(--radius-md);
    padding: 16px;
    text-align: center;
    border: 1px solid var(--color-border);
}

.stat-label {
    font-size: 0.75rem;
    color: var(--color-text-muted);
    text-transform: uppercase;
    letter-spacing: 0.05em;
    margin-bottom: 4px;
}

.stat-value {
    font-family: var(--font-mono);
    font-size: clamp(1.25rem, 3vw, 1.75rem);
    font-weight: 600;
    color: var(--color-text);
}

.stat-change {
    font-size: 0.85rem;
    font-weight: 500;
    margin-top: 4px;
}

.stat-change.positive { color: var(--color-success); }
.stat-change.negative { color: var(--color-danger); }
.stat-change.neutral { color: var(--color-text-muted); }

/* ============================================
   SECTIONS
   ============================================ */
.section {
    padding: 48px 0;
}

.section-alt {
    background: var(--color-bg-alt);
}

.section-title {
    font-size: clamp(1.5rem, 4vw, 2rem);
    margin-bottom: 8px;
    text-align: center;
}

.section-subtitle {
    color: var(--color-text-muted);
    text-align: center;
    margin-bottom: 32px;
}

.section-cta {
    text-align: center;
    margin-top: 32px;
}

/* ============================================
   HEATMAP
   ============================================ */
.heatmap-grid {
    display: grid;
    grid-template-columns: repeat(2, 1fr);
    gap: 12px;
}

@media (min-width: 640px) {
    .heatmap-grid {
        grid-template-columns: repeat(3, 1fr);
    }
}

@media (min-width: 1024px) {
    .heatmap-grid {
        grid-template-columns: repeat(6, 1fr);
    }
}

.heatmap-card {
    background: var(--color-card);
    border-radius: var(--radius-md);
    padding: 16px;
    text-align: center;
    border: 1px solid var(--color-border);
    transition: all var(--transition);
}

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

.heatmap-card.hot {
    border-color: var(--color-success);
    background: linear-gradient(180deg, rgba(34,197,94,0.1) 0%, var(--color-card) 100%);
}

.heatmap-card.cold {
    border-color: var(--color-danger);
    background: linear-gradient(180deg, rgba(239,68,68,0.1) 0%, var(--color-card) 100%);
}

.heatmap-card.neutral {
    border-color: var(--color-warning);
    background: linear-gradient(180deg, rgba(245,158,11,0.1) 0%, var(--color-card) 100%);
}

.heatmap-badge {
    display: inline-block;
    font-size: 0.7rem;
    font-weight: 600;
    padding: 2px 8px;
    border-radius: 20px;
    margin-bottom: 8px;
}

.heatmap-badge.hot { background: rgba(34,197,94,0.2); color: var(--color-success); }
.heatmap-badge.cold { background: rgba(239,68,68,0.2); color: var(--color-danger); }
.heatmap-badge.neutral { background: rgba(245,158,11,0.2); color: var(--color-warning); }

.heatmap-sector {
    font-weight: 600;
    font-size: 0.95rem;
    margin-bottom: 4px;
}

.heatmap-change {
    font-family: var(--font-mono);
    font-size: 1.1rem;
    font-weight: 600;
}

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

/* ============================================
   TOP MOVERS
   ============================================ */
.movers-header {
    display: flex;
    flex-direction: column;
    align-items: center;
    gap: 16px;
    margin-bottom: 24px;
}

@media (min-width: 640px) {
    .movers-header {
        flex-direction: row;
        justify-content: space-between;
    }
    .movers-header .section-title {
        margin-bottom: 0;
    }
}

.movers-tabs {
    display: flex;
    gap: 8px;
}

.tab-btn {
    padding: 8px 16px;
    background: var(--color-card);
    border: 1px solid var(--color-border);
    border-radius: var(--radius-md);
    color: var(--color-text-muted);
    font-weight: 500;
    cursor: pointer;
    transition: all var(--transition);
}

.tab-btn:hover,
.tab-btn.active {
    background: var(--color-accent);
    color: var(--color-bg);
    border-color: var(--color-accent);
}

.movers-grid {
    display: grid;
    grid-template-columns: 1fr;
    gap: 12px;
}

@media (min-width: 640px) {
    .movers-grid {
        grid-template-columns: repeat(2, 1fr);
    }
}

@media (min-width: 1024px) {
    .movers-grid {
        grid-template-columns: repeat(5, 1fr);
    }
}

.mover-card {
    background: var(--color-card);
    border-radius: var(--radius-md);
    padding: 16px;
    border: 1px solid var(--color-border);
    display: flex;
    align-items: center;
    gap: 12px;
    transition: all var(--transition);
    cursor: pointer;
    text-decoration: none;
    color: inherit;
}

.mover-card:hover {
    border-color: var(--color-accent);
    transform: translateY(-2px);
    box-shadow: var(--shadow-sm);
    color: inherit;
}

.mover-rank {
    font-family: var(--font-mono);
    font-size: 0.85rem;
    font-weight: 600;
    color: var(--color-text-muted);
    width: 24px;
}

.mover-rank.top3 {
    color: var(--color-accent);
}

.mover-icon {
    width: 36px;
    height: 36px;
    border-radius: 50%;
    object-fit: cover;
}

.mover-info {
    flex: 1;
    min-width: 0;
}

.mover-name {
    font-weight: 600;
    font-size: 0.95rem;
    white-space: nowrap;
    overflow: hidden;
    text-overflow: ellipsis;
}

.mover-symbol {
    font-size: 0.8rem;
    color: var(--color-text-muted);
}

.mover-change {
    font-family: var(--font-mono);
    font-weight: 600;
    font-size: 0.95rem;
}

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


/* ============================================
   FEATURED COINS
   ============================================ */
.coins-grid {
    display: grid;
    grid-template-columns: 1fr;
    gap: 16px;
}

@media (min-width: 640px) {
    .coins-grid {
        grid-template-columns: repeat(2, 1fr);
    }
}

@media (min-width: 1024px) {
    .coins-grid {
        grid-template-columns: repeat(3, 1fr);
    }
}

.coin-card {
    background: var(--color-card);
    border-radius: var(--radius-lg);
    overflow: hidden;
    border: 1px solid var(--color-border);
    transition: all var(--transition);
    text-decoration: none;
    color: inherit;
    display: block;
}

.coin-card:hover {
    border-color: var(--color-accent);
    transform: translateY(-4px);
    box-shadow: var(--shadow-md);
    color: inherit;
}

.coin-card-gradient {
    height: 4px;
    background: linear-gradient(90deg, var(--color-accent), var(--color-accent-2));
}

.coin-card-header {
    padding: 20px 20px 12px;
    display: flex;
    align-items: center;
    gap: 12px;
}

.coin-card-icon {
    width: 48px;
    height: 48px;
    border-radius: 50%;
}

.coin-card-title h3 {
    font-size: 1.1rem;
    margin-bottom: 2px;
}

.coin-card-title span {
    font-size: 0.85rem;
    color: var(--color-text-muted);
}

.coin-card-badge {
    margin-left: auto;
    padding: 4px 10px;
    border-radius: 20px;
    font-size: 0.75rem;
    font-weight: 600;
}

.coin-card-badge.positive {
    background: rgba(34,197,94,0.15);
    color: var(--color-success);
}

.coin-card-badge.negative {
    background: rgba(239,68,68,0.15);
    color: var(--color-danger);
}

.coin-card-body {
    padding: 0 20px 16px;
}

.coin-card-price {
    font-family: var(--font-mono);
    font-size: 1.5rem;
    font-weight: 600;
    margin-bottom: 4px;
}

.coin-card-mcap {
    font-size: 0.85rem;
    color: var(--color-text-muted);
}

.coin-card-footer {
    padding: 16px 20px;
    background: rgba(0,0,0,0.2);
    display: grid;
    grid-template-columns: repeat(3, 1fr);
    gap: 8px;
}

.coin-stat {
    text-align: center;
}

.coin-stat-label {
    font-size: 0.7rem;
    color: var(--color-text-muted);
    text-transform: uppercase;
    letter-spacing: 0.05em;
}

.coin-stat-value {
    font-family: var(--font-mono);
    font-size: 0.85rem;
    font-weight: 500;
}

/* ============================================
   COMPARISONS
   ============================================ */
.comparisons-grid {
    display: grid;
    grid-template-columns: 1fr;
    gap: 16px;
}

@media (min-width: 768px) {
    .comparisons-grid {
        grid-template-columns: repeat(3, 1fr);
    }
}

.comparison-card {
    background: var(--color-card);
    border-radius: var(--radius-lg);
    padding: 24px;
    text-align: center;
    border: 1px solid var(--color-border);
    transition: all var(--transition);
    display: block;
    color: inherit;
}

.comparison-card:hover {
    border-color: var(--color-accent);
    transform: translateY(-4px);
    box-shadow: var(--shadow-md);
    color: inherit;
}

.comparison-vs {
    display: flex;
    align-items: center;
    justify-content: center;
    gap: 12px;
    margin-bottom: 16px;
}

.coin-badge {
    padding: 8px 16px;
    border-radius: var(--radius-md);
    font-family: var(--font-mono);
    font-weight: 600;
    font-size: 0.9rem;
}

.coin-badge.btc { background: #f7931a20; color: #f7931a; }
.coin-badge.eth { background: #627eea20; color: #627eea; }
.coin-badge.sol { background: #00ffa320; color: #00ffa3; }
.coin-badge.ada { background: #0033ad20; color: #3468d1; }

.vs {
    font-weight: 700;
    color: var(--color-text-muted);
}

.comparison-card h3 {
    font-size: 1.1rem;
    margin-bottom: 8px;
}

.comparison-card p {
    font-size: 0.9rem;
    color: var(--color-text-muted);
}

/* ============================================
   CATEGORIES
   ============================================ */
.categories-grid {
    display: grid;
    grid-template-columns: repeat(2, 1fr);
    gap: 12px;
}

@media (min-width: 640px) {
    .categories-grid {
        grid-template-columns: repeat(3, 1fr);
    }
}

@media (min-width: 1024px) {
    .categories-grid {
        grid-template-columns: repeat(6, 1fr);
    }
}

.category-card {
    background: var(--color-card);
    border-radius: var(--radius-md);
    padding: 20px 16px;
    text-align: center;
    border: 1px solid var(--color-border);
    transition: all var(--transition);
    display: block;
    color: inherit;
}

.category-card:hover {
    border-color: var(--color-accent);
    transform: translateY(-4px);
    box-shadow: var(--shadow-sm);
    color: inherit;
}

.category-icon {
    font-size: 2rem;
    display: block;
    margin-bottom: 8px;
}

.category-card h3 {
    font-size: 0.95rem;
    margin-bottom: 4px;
}

.category-card p {
    font-size: 0.75rem;
    color: var(--color-text-muted);
}

/* ============================================
   NEWSLETTER CTA
   ============================================ */
.section-cta-block {
    background: linear-gradient(135deg, var(--color-secondary) 0%, var(--color-primary) 100%);
    border-top: 1px solid var(--color-border);
    border-bottom: 1px solid var(--color-border);
}

.cta-content {
    text-align: center;
    max-width: 500px;
    margin: 0 auto;
}

.cta-content h2 {
    font-size: clamp(1.5rem, 4vw, 2rem);
    margin-bottom: 12px;
}

.cta-content p {
    color: var(--color-text-muted);
    margin-bottom: 24px;
}

.newsletter-form {
    display: flex;
    flex-direction: column;
    gap: 12px;
}

@media (min-width: 480px) {
    .newsletter-form {
        flex-direction: row;
    }
}

.newsletter-form input {
    flex: 1;
    padding: 12px 16px;
    background: var(--color-bg);
    border: 1px solid var(--color-border);
    border-radius: var(--radius-md);
    color: var(--color-text);
    font-size: 1rem;
}

.newsletter-form input:focus {
    outline: none;
    border-color: var(--color-accent);
}

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

/* ============================================
   FOOTER
   ============================================ */
.footer {
    background: var(--color-bg-alt);
    padding: 48px 0 24px;
    border-top: 1px solid var(--color-border);
}

.footer-grid {
    display: grid;
    grid-template-columns: 1fr;
    gap: 32px;
    margin-bottom: 32px;
}

@media (min-width: 640px) {
    .footer-grid {
        grid-template-columns: repeat(2, 1fr);
    }
}

@media (min-width: 1024px) {
    .footer-grid {
        grid-template-columns: 2fr 1fr 1fr 1fr;
    }
}

.footer-brand p {
    color: var(--color-text-muted);
    font-size: 0.9rem;
    margin-top: 12px;
    max-width: 280px;
}

.footer-links h4 {
    font-size: 0.9rem;
    margin-bottom: 16px;
    color: var(--color-text);
}

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

.footer-links li {
    margin-bottom: 8px;
}

.footer-links a {
    color: var(--color-text-muted);
    font-size: 0.9rem;
}

.footer-links a:hover {
    color: var(--color-accent);
}

.footer-bottom {
    padding-top: 24px;
    border-top: 1px solid var(--color-border);
    text-align: center;
}

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

.footer-bottom .disclaimer {
    font-size: 0.75rem;
    margin-top: 8px;
    opacity: 0.7;
}

/* ============================================
   UTILITY CLASSES
   ============================================ */
.text-center { text-align: center; }
.text-muted { color: var(--color-text-muted); }
.accent { color: var(--color-accent); }

/* Loading skeleton */
.skeleton {
    background: linear-gradient(90deg, var(--color-card) 25%, var(--color-card-hover) 50%, var(--color-card) 75%);
    background-size: 200% 100%;
    animation: skeleton-loading 1.5s infinite;
    border-radius: var(--radius-sm);
}

@keyframes skeleton-loading {
    0% { background-position: 200% 0; }
    100% { background-position: -200% 0; }
}

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

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

::-webkit-scrollbar-thumb {
    background: var(--color-border);
    border-radius: 4px;
}

::-webkit-scrollbar-thumb:hover {
    background: var(--color-text-muted);
}


/* ============================================
   RECAP STYLES
   ============================================ */
.recap-date {
    font-size: 0.9rem;
    color: var(--color-accent);
    font-weight: 500;
    margin-bottom: 8px;
}

.market-summary {
    background: var(--color-card);
    border-radius: var(--radius-lg);
    padding: 24px;
    margin-bottom: 24px;
    border: 1px solid var(--color-border);
    text-align: center;
}

.summary-mood {
    font-size: 1.5rem;
    font-weight: 700;
    margin-bottom: 12px;
}

.summary-text {
    color: var(--color-text-muted);
    font-size: 1.05rem;
    line-height: 1.6;
}

.summary-text strong {
    color: var(--color-text);
}

.movers-split {
    display: grid;
    grid-template-columns: 1fr;
    gap: 32px;
}

@media (min-width: 768px) {
    .movers-split {
        grid-template-columns: 1fr 1fr;
    }
}

.movers-column .section-title {
    text-align: left;
    margin-bottom: 16px;
}

.movers-list {
    display: flex;
    flex-direction: column;
    gap: 8px;
}

.verdict {
    font-size: 1.25rem;
    font-weight: 600;
    margin-bottom: 16px;
}

.quick-stats {
    display: flex;
    flex-direction: column;
}

.qs-row {
    display: flex;
    justify-content: space-between;
    padding: 10px 0;
    border-bottom: 1px solid var(--color-border);
    font-size: 0.9rem;
}

.qs-row:last-child {
    border-bottom: none;
}

.qs-row span:first-child {
    color: var(--color-text-muted);
}

.qs-row span:last-child {
    font-family: var(--font-mono);
    font-weight: 500;
}

/* Improved coins grid for 10 items */
@media (min-width: 1024px) {
    .coins-grid {
        grid-template-columns: repeat(5, 1fr);
    }
}