:root {
    --bg: #06080d;
    --bg2: #0c1018;
    --surface: rgba(255, 255, 255, 0.03);
    --glass: rgba(255, 255, 255, 0.04);
    --glass-border: rgba(255, 255, 255, 0.08);
    --text: #e8ecf1;
    --text2: #8892a4;
    --text3: #505a6b;
    --accent: #f7931a;
    --accent2: #fbbf24;
    --green: #00e676;
    --green-bg: rgba(0, 230, 118, 0.1);
    --red: #ff5252;
    --red-bg: rgba(255, 82, 82, 0.1);
    --radius: 16px;
    --radius-sm: 10px;
    --font: 'Space Grotesk', system-ui, sans-serif;
    --mono: 'JetBrains Mono', monospace;
}

*, *::before, *::after { margin: 0; padding: 0; box-sizing: border-box; }
html { scroll-behavior: smooth; }

body {
    font-family: var(--font);
    background: var(--bg);
    color: var(--text);
    line-height: 1.6;
    overflow-x: hidden;
    -webkit-font-smoothing: antialiased;
}

.container { max-width: 1100px; margin: 0 auto; padding: 0 24px; }

.text-accent { color: var(--accent); }
.text-gradient {
    background: linear-gradient(135deg, var(--accent), var(--accent2));
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
    background-clip: text;
}

.glass {
    background: var(--glass);
    border: 1px solid var(--glass-border);
    backdrop-filter: blur(20px);
    -webkit-backdrop-filter: blur(20px);
}

/* ── Animations ── */
@keyframes fadeUp {
    from { opacity: 0; transform: translateY(30px); }
    to { opacity: 1; transform: translateY(0); }
}
@keyframes pulse {
    0%, 100% { opacity: 1; }
    50% { opacity: 0.4; }
}
@keyframes float {
    0%, 100% { transform: translateY(0); }
    50% { transform: translateY(-8px); }
}

.fade-up {
    opacity: 0;
    transform: translateY(30px);
    transition: opacity 0.7s ease, transform 0.7s ease;
}
.fade-up.visible {
    opacity: 1;
    transform: translateY(0);
}

/* ── Banner ── */
.banner {
    background: linear-gradient(90deg, var(--accent), #e88a10);
    padding: 10px 0;
    font-size: 0.85rem;
    font-weight: 500;
    color: #000;
    position: relative;
    z-index: 200;
}
.banner-inner {
    max-width: 1100px;
    margin: 0 auto;
    padding: 0 24px;
    display: flex;
    align-items: center;
    justify-content: center;
    gap: 14px;
    flex-wrap: wrap;
}
.banner-pulse {
    width: 8px; height: 8px;
    background: #000;
    border-radius: 50%;
    animation: pulse 2s infinite;
    flex-shrink: 0;
}
.banner-cta {
    background: #000;
    color: var(--accent);
    padding: 4px 16px;
    border-radius: 99px;
    text-decoration: none;
    font-weight: 600;
    font-size: 0.8rem;
    border: none;
    font-family: var(--font);
    cursor: pointer;
    transition: transform 0.2s, box-shadow 0.2s;
}
.banner-cta:hover {
    transform: scale(1.05);
    box-shadow: 0 0 20px rgba(247,147,26,0.3);
}
#close-banner {
    background: none; border: none; color: rgba(0,0,0,0.5);
    font-size: 1.3rem; cursor: pointer; line-height: 1; padding: 0 4px;
}
#close-banner:hover { color: #000; }
.banner.hidden { display: none; }

/* ── Header ── */
#header {
    position: sticky; top: 0; z-index: 100;
    background: rgba(6, 8, 13, 0.7);
    backdrop-filter: blur(16px);
    -webkit-backdrop-filter: blur(16px);
    border-bottom: 1px solid var(--glass-border);
}
.header-flex {
    display: flex; align-items: center;
    justify-content: space-between; height: 64px;
}
.logo {
    display: flex; align-items: center; gap: 8px;
    text-decoration: none; color: var(--text);
    font-size: 1.15rem; font-weight: 700;
}
.logo-btc { color: var(--accent); font-size: 1.5rem; }
nav { display: flex; gap: 4px; }
nav a {
    color: var(--text2); text-decoration: none;
    font-size: 0.85rem; font-weight: 500;
    padding: 7px 14px; border-radius: var(--radius-sm);
    transition: all 0.2s;
}
nav a:hover { color: var(--text); background: var(--glass); }
.menu-toggle {
    display: none; background: none; border: none;
    cursor: pointer; padding: 8px; flex-direction: column; gap: 5px;
}
.menu-toggle span {
    display: block; width: 22px; height: 2px;
    background: var(--text); border-radius: 2px;
    transition: 0.3s;
}

/* ── Hero ── */
#hero {
    position: relative;
    min-height: 92vh;
    display: flex; align-items: center;
    overflow: hidden;
    padding: 80px 0 60px;
}
#hero-canvas {
    position: absolute; inset: 0;
    width: 100%; height: 100%;
    pointer-events: none;
}
.hero-content {
    position: relative; z-index: 2;
    text-align: center;
    animation: fadeUp 1s ease;
}
.hero-badge {
    display: inline-flex; align-items: center; gap: 8px;
    background: var(--glass);
    border: 1px solid var(--glass-border);
    padding: 6px 18px;
    border-radius: 99px;
    font-size: 0.8rem; font-weight: 500;
    color: var(--text2);
    margin-bottom: 28px;
}
.badge-dot {
    width: 6px; height: 6px;
    background: var(--green);
    border-radius: 50%;
    box-shadow: 0 0 8px var(--green);
    animation: pulse 2s infinite;
}
#hero h1 {
    font-size: clamp(2.4rem, 6vw, 4rem);
    font-weight: 700;
    letter-spacing: -0.03em;
    line-height: 1.1;
    margin-bottom: 20px;
}
.hero-sub {
    color: var(--text2);
    font-size: 1.1rem;
    max-width: 540px;
    margin: 0 auto 36px;
    line-height: 1.7;
}
.hero-actions {
    display: flex; gap: 12px;
    justify-content: center;
    margin-bottom: 48px;
    flex-wrap: wrap;
}
.btn {
    padding: 13px 32px;
    border-radius: 99px;
    font-size: 0.92rem;
    font-weight: 600;
    text-decoration: none;
    font-family: var(--font);
    cursor: pointer; border: none;
    transition: all 0.3s;
}
.btn-primary {
    background: linear-gradient(135deg, var(--accent), var(--accent2));
    color: #000;
    box-shadow: 0 4px 24px rgba(247,147,26,0.25);
}
.btn-primary:hover {
    transform: translateY(-2px);
    box-shadow: 0 8px 32px rgba(247,147,26,0.35);
}
.btn-ghost {
    background: var(--glass);
    color: var(--text);
    border: 1px solid var(--glass-border);
}
.btn-ghost:hover {
    background: rgba(255,255,255,0.08);
    transform: translateY(-2px);
}
.hero-ticker {
    display: inline-flex; align-items: center; gap: 20px;
    background: var(--glass);
    border: 1px solid var(--glass-border);
    border-radius: var(--radius);
    padding: 16px 28px;
    backdrop-filter: blur(20px);
    animation: float 4s ease-in-out infinite;
}
.ticker-label {
    font-size: 0.75rem; color: var(--text3);
    font-weight: 500; text-transform: uppercase;
    letter-spacing: 0.06em; display: block;
}
.ticker-value {
    font-family: var(--mono);
    font-size: 1.6rem; font-weight: 700;
    letter-spacing: -0.02em;
}
.ticker-change {
    font-family: var(--mono);
    font-size: 0.92rem; font-weight: 600;
    padding: 4px 14px; border-radius: 8px;
}
.ticker-change.positive { color: var(--green); background: var(--green-bg); }
.ticker-change.negative { color: var(--red); background: var(--red-bg); }

/* ── Section headers ── */
.section-header { text-align: center; margin-bottom: 40px; }
.section-header h2 {
    font-size: 2rem; font-weight: 700;
    letter-spacing: -0.02em; margin-bottom: 10px;
}
.section-sub { color: var(--text2); font-size: 0.95rem; }

/* ── Tracker Stats ── */
#tracker { padding: 80px 0 40px; }
.stats-row {
    display: grid;
    grid-template-columns: repeat(4, 1fr);
    gap: 14px;
}
.stat-card {
    border-radius: var(--radius);
    padding: 22px;
    display: flex; align-items: center; gap: 16px;
    transition: transform 0.3s, border-color 0.3s;
}
.stat-card:hover {
    transform: translateY(-3px);
    border-color: rgba(255,255,255,0.15);
}
.stat-icon {
    width: 44px; height: 44px;
    border-radius: 12px;
    display: flex; align-items: center; justify-content: center;
    font-size: 1rem;
    background: var(--green-bg); color: var(--green);
    flex-shrink: 0;
}
.stat-icon.down { background: var(--red-bg); color: var(--red); }
.stat-icon.cap { background: rgba(99,102,241,0.1); color: #818cf8; }
.stat-icon.vol { background: rgba(247,147,26,0.1); color: var(--accent); }
.stat-label {
    font-size: 0.72rem; color: var(--text3);
    text-transform: uppercase; letter-spacing: 0.05em;
    font-weight: 500; margin-bottom: 2px;
}
.stat-val {
    font-family: var(--mono);
    font-size: 1.1rem; font-weight: 600;
    display: block;
}

/* ── Chart ── */
#chart-section { padding: 40px 0 80px; }
.chart-panel {
    border-radius: var(--radius);
    padding: 28px;
}
.chart-top {
    display: flex; align-items: center;
    justify-content: space-between;
    margin-bottom: 20px;
    flex-wrap: wrap; gap: 12px;
}
.chart-top h3 { font-size: 0.85rem; color: var(--text2); font-weight: 500; }
.chart-price {
    font-family: var(--mono);
    font-size: 1.4rem; font-weight: 700;
    display: block; margin-top: 4px;
}
.chart-tabs {
    display: flex; gap: 2px;
    background: rgba(255,255,255,0.03);
    border-radius: var(--radius-sm);
    padding: 3px;
}
.tab {
    background: none; border: none;
    color: var(--text3); font-size: 0.8rem;
    font-weight: 600; padding: 7px 16px;
    border-radius: 8px; cursor: pointer;
    font-family: var(--font);
    transition: all 0.2s;
}
.tab:hover { color: var(--text2); }
.tab.active {
    background: var(--accent);
    color: #000;
}
.chart-wrap { height: 360px; }

/* ── Converter ── */
#convert { padding: 80px 0; }
.converter {
    border-radius: var(--radius);
    padding: 32px;
    display: flex; align-items: center;
    gap: 20px;
    max-width: 640px;
    margin: 0 auto;
    flex-wrap: wrap;
    justify-content: center;
}
.conv-field { flex: 1; min-width: 200px; }
.conv-field label {
    display: block; font-size: 0.75rem;
    font-weight: 600; color: var(--text3);
    text-transform: uppercase;
    letter-spacing: 0.06em;
    margin-bottom: 8px;
}
.conv-input-wrap {
    display: flex; align-items: center;
    background: rgba(255,255,255,0.04);
    border: 1px solid var(--glass-border);
    border-radius: var(--radius-sm);
    padding: 0 16px;
    transition: border-color 0.2s;
}
.conv-input-wrap:focus-within { border-color: var(--accent); }
.conv-symbol {
    font-size: 1.1rem; color: var(--text3);
    margin-right: 10px; font-weight: 500;
}
.conv-input-wrap input {
    background: none; border: none;
    color: var(--text); font-family: var(--mono);
    font-size: 1.2rem; font-weight: 500;
    padding: 14px 0; width: 100%;
    outline: none;
}
.conv-input-wrap input::-webkit-inner-spin-button { display: none; }
.conv-swap {
    background: rgba(255,255,255,0.06);
    border: 1px solid var(--glass-border);
    border-radius: 50%;
    width: 44px; height: 44px;
    display: flex; align-items: center; justify-content: center;
    color: var(--accent); cursor: pointer;
    transition: transform 0.3s, background 0.2s;
    flex-shrink: 0;
}
.conv-swap:hover {
    background: rgba(247,147,26,0.1);
    transform: rotate(180deg);
}

/* ── Platforms ── */
#platforms { padding: 80px 0; }
.platforms-grid {
    display: grid;
    grid-template-columns: repeat(2, 1fr);
    gap: 20px;
}
.platform-card {
    border-radius: var(--radius);
    padding: 30px;
    text-decoration: none; color: inherit;
    display: flex; flex-direction: column;
    position: relative;
    overflow: hidden;
    transform-style: preserve-3d;
    transition: transform 0.4s ease, border-color 0.4s ease, box-shadow 0.4s ease;
    will-change: transform;
}
.platform-card:hover {
    transform: translateY(-6px) rotateX(2deg);
    box-shadow: 0 20px 60px rgba(0,0,0,0.4);
}
.platform-card:hover .card-shine {
    opacity: 1;
    transform: translateX(100%);
}

/* Glow border on hover using data-glow color */
.platform-card::before {
    content: '';
    position: absolute; inset: -1px;
    border-radius: var(--radius);
    padding: 1px;
    background: linear-gradient(135deg, transparent 40%, var(--glass-border) 50%, transparent 60%);
    -webkit-mask: linear-gradient(#fff 0 0) content-box, linear-gradient(#fff 0 0);
    -webkit-mask-composite: xor;
    mask-composite: exclude;
    opacity: 0;
    transition: opacity 0.4s;
    pointer-events: none;
}
.platform-card:hover::before {
    opacity: 1;
}
.platform-card[data-glow="#f3ba2f"]:hover {
    border-color: rgba(243, 186, 47, 0.3);
    box-shadow: 0 20px 60px rgba(243, 186, 47, 0.08), 0 0 40px rgba(243, 186, 47, 0.05);
}
.platform-card[data-glow="#0052ff"]:hover {
    border-color: rgba(0, 82, 255, 0.3);
    box-shadow: 0 20px 60px rgba(0, 82, 255, 0.08), 0 0 40px rgba(0, 82, 255, 0.05);
}
.platform-card[data-glow="#7b3fe4"]:hover {
    border-color: rgba(123, 63, 228, 0.3);
    box-shadow: 0 20px 60px rgba(123, 63, 228, 0.08), 0 0 40px rgba(123, 63, 228, 0.05);
}
.platform-card[data-glow="#1e88e5"]:hover {
    border-color: rgba(30, 136, 229, 0.3);
    box-shadow: 0 20px 60px rgba(30, 136, 229, 0.08), 0 0 40px rgba(30, 136, 229, 0.05);
}

/* Shine sweep effect */
.card-shine {
    position: absolute;
    top: 0; left: -75%;
    width: 50%; height: 100%;
    background: linear-gradient(
        90deg,
        transparent,
        rgba(255, 255, 255, 0.04),
        rgba(255, 255, 255, 0.08),
        rgba(255, 255, 255, 0.04),
        transparent
    );
    transform: translateX(-100%);
    opacity: 0;
    transition: transform 0.7s ease, opacity 0.3s;
    pointer-events: none;
    z-index: 1;
}

.platform-header {
    display: flex; align-items: center;
    gap: 14px; margin-bottom: 20px;
    position: relative; z-index: 2;
}
.platform-logo {
    width: 50px; height: 50px;
    border-radius: 14px;
    display: flex; align-items: center; justify-content: center;
    flex-shrink: 0;
    transition: transform 0.3s;
}
.platform-card:hover .platform-logo {
    transform: scale(1.1) rotate(-3deg);
}
.platform-logo.binance { background: rgba(243, 186, 47, 0.12); }
.platform-logo.coinbase { background: rgba(0, 82, 255, 0.12); }
.platform-logo.kraken { background: rgba(123, 63, 228, 0.12); }
.platform-logo.bitvavo { background: rgba(30, 136, 229, 0.12); }
.platform-name { font-weight: 700; font-size: 1.15rem; }
.platform-tag {
    font-size: 0.72rem; color: var(--text3);
    font-weight: 500;
}
.platform-badge {
    margin-left: auto;
    font-size: 0.68rem; font-weight: 600;
    text-transform: uppercase;
    letter-spacing: 0.06em;
    padding: 4px 10px;
    border-radius: 6px;
    background: rgba(247, 147, 26, 0.12);
    color: var(--accent);
}
.platform-features {
    list-style: none;
    margin-bottom: 22px; flex: 1;
    position: relative; z-index: 2;
}
.platform-features li {
    font-size: 0.86rem; color: var(--text2);
    padding: 6px 0; padding-left: 22px;
    position: relative;
    transition: color 0.2s, transform 0.2s;
}
.platform-card:hover .platform-features li {
    color: var(--text);
}
.platform-features li::before {
    content: '✓';
    position: absolute;
    left: 0; top: 6px;
    font-size: 0.75rem;
    color: var(--green);
    font-weight: 700;
}
.platform-bottom {
    position: relative; z-index: 2;
    border-top: 1px solid var(--glass-border);
    padding-top: 18px;
}
.platform-cta {
    font-size: 0.9rem; font-weight: 600;
    color: var(--accent);
    display: inline-flex;
    align-items: center; gap: 8px;
    transition: gap 0.3s;
}
.platform-cta svg {
    transition: transform 0.3s;
}
.platform-card:hover .platform-cta {
    gap: 12px;
}
.platform-card:hover .platform-cta svg {
    transform: translateX(4px);
}

/* ── About ── */
#about { padding: 80px 0; }
.about-grid {
    display: grid;
    grid-template-columns: 1.3fr 1fr;
    gap: 48px; align-items: center;
}
.about-text h2 {
    font-size: 2rem; font-weight: 700;
    margin-bottom: 20px; letter-spacing: -0.02em;
}
.about-text p {
    color: var(--text2); font-size: 0.95rem;
    line-height: 1.8; margin-bottom: 14px;
}
.about-text strong { color: var(--text); }
.about-numbers {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 12px;
}
.about-num {
    border-radius: var(--radius);
    padding: 24px;
    text-align: center;
    transition: transform 0.3s;
}
.about-num:hover { transform: scale(1.04); }
.num-value {
    font-size: 1.8rem; font-weight: 700;
    color: var(--accent);
    display: block; margin-bottom: 4px;
    font-family: var(--mono);
}
.num-label {
    font-size: 0.72rem; color: var(--text3);
    text-transform: uppercase;
    letter-spacing: 0.05em; font-weight: 500;
}

/* ── Footer ── */
footer {
    border-top: 1px solid var(--glass-border);
    padding: 48px 0; margin-top: 40px;
}
.footer-inner { text-align: center; }
.footer-brand {
    font-size: 1.05rem; font-weight: 700;
    margin-bottom: 16px;
}
.footer-legal {
    font-size: 0.78rem; color: var(--text3);
    max-width: 560px; margin: 0 auto 10px;
    line-height: 1.6;
}
.footer-copy { font-size: 0.72rem; color: var(--text3); }

/* ── Modal ── */
.modal-overlay {
    position: fixed; inset: 0;
    background: rgba(0, 0, 0, 0.7);
    backdrop-filter: blur(8px);
    -webkit-backdrop-filter: blur(8px);
    display: flex; align-items: center; justify-content: center;
    z-index: 1000;
    padding: 24px;
    animation: fadeIn 0.25s ease;
}
.modal-overlay.hidden { display: none; }
@keyframes fadeIn {
    from { opacity: 0; }
    to { opacity: 1; }
}
.modal {
    width: 100%; max-width: 480px;
    border-radius: var(--radius);
    padding: 36px;
    position: relative;
    animation: slideUp 0.35s ease;
    max-height: 90vh;
    overflow-y: auto;
}
@keyframes slideUp {
    from { opacity: 0; transform: translateY(24px); }
    to { opacity: 1; transform: translateY(0); }
}
.modal h3 {
    font-size: 1.4rem; font-weight: 700;
    margin-bottom: 8px; letter-spacing: -0.02em;
}
.modal-sub {
    font-size: 0.85rem; color: var(--text2);
    margin-bottom: 28px;
}
.modal-close {
    position: absolute; top: 16px; right: 20px;
    background: none; border: none;
    color: var(--text3); font-size: 1.5rem;
    cursor: pointer; line-height: 1;
    transition: color 0.2s;
}
.modal-close:hover { color: var(--text); }
.form-group {
    margin-bottom: 18px;
}
.form-group label {
    display: block; font-size: 0.75rem;
    font-weight: 600; color: var(--text2);
    text-transform: uppercase;
    letter-spacing: 0.05em;
    margin-bottom: 6px;
}
.form-group input,
.form-group textarea {
    width: 100%;
    background: rgba(255, 255, 255, 0.04);
    border: 1px solid var(--glass-border);
    border-radius: var(--radius-sm);
    color: var(--text);
    font-family: var(--font);
    font-size: 0.92rem;
    padding: 12px 16px;
    outline: none;
    transition: border-color 0.2s;
    resize: vertical;
}
.form-group input::placeholder,
.form-group textarea::placeholder {
    color: var(--text3);
}
.form-group input:focus,
.form-group textarea:focus {
    border-color: var(--accent);
}
.form-submit {
    width: 100%;
    margin-top: 6px;
    font-size: 0.95rem;
    padding: 14px;
}
.form-success {
    text-align: center;
    padding: 40px 0 20px;
}
.form-success.hidden { display: none; }
.success-icon {
    width: 56px; height: 56px;
    border-radius: 50%;
    background: var(--green-bg);
    color: var(--green);
    font-size: 1.6rem;
    display: flex; align-items: center; justify-content: center;
    margin: 0 auto 16px;
}
.form-success p {
    color: var(--text2);
    font-size: 0.95rem;
}

/* ── Responsive ── */
@media (max-width: 768px) {
    .stats-row { grid-template-columns: 1fr 1fr; }
    .platforms-grid { grid-template-columns: 1fr; }
    .about-grid { grid-template-columns: 1fr; }
    .chart-wrap { height: 260px; }
    .menu-toggle { display: flex; }
    nav {
        display: none; position: absolute;
        top: 64px; left: 0; right: 0;
        background: rgba(6,8,13,0.95);
        backdrop-filter: blur(20px);
        flex-direction: column;
        padding: 16px 24px;
        border-bottom: 1px solid var(--glass-border);
    }
    nav.open { display: flex; }
    nav a { padding: 12px 0; }
    #hero { min-height: 80vh; }
}

@media (max-width: 480px) {
    .stats-row { grid-template-columns: 1fr; }
    .hero-ticker { flex-direction: column; gap: 8px; padding: 14px 20px; }
    .converter { flex-direction: column; }
    .conv-swap { transform: rotate(90deg); }
    .conv-swap:hover { transform: rotate(270deg); }
    .about-numbers { grid-template-columns: 1fr 1fr; }
}