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

:root {
    --bg:        #0a0a0b;
    --surface:   #111114;
    --surface-2: #18181d;
    --border:    rgba(255,255,255,0.06);
    --border-hi: rgba(255,255,255,0.12);

    /* Dual-tone accents */
    --teal:      #00d4aa;
    --teal-dim:  rgba(0,212,170,0.12);
    --teal-glow: rgba(0,212,170,0.25);
    --amber:     #f5a623;
    --amber-dim: rgba(245,166,35,0.12);
    --amber-glow:rgba(245,166,35,0.22);
    --purple:    #9b7fe8;
    --purple-dim:rgba(155,127,232,0.22);

    --text-hi:   #f0f0f5;
    --text-md:   #9090a8;
    --text-lo:   #4a4a5e;

    --radius-sm: 6px;
    --radius:    12px;
    --radius-lg: 18px;
}

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

html { scroll-behavior: smooth; }

body {
    font-family: 'Syne', sans-serif;
    background: var(--bg);
    color: var(--text-hi);
    min-height: 100vh;
    display: flex;
    justify-content: center;
    align-items: flex-start;
    padding: 48px 20px 80px;

    /* Subtle grid texture */
    background-image:
        linear-gradient(var(--border) 1px, transparent 1px),
        linear-gradient(90deg, var(--border) 1px, transparent 1px);
    background-size: 40px 40px;
    background-position: center center;
}

/* ── Layout ───────────────────────────────────────── */

.container {
    display: flex;
    flex-direction: column;
    align-items: stretch;
    gap: 16px;
    max-width: 680px;
    width: 100%;
}

/* ── Header ───────────────────────────────────────── */

h1 {
    font-size: 13px;
    font-weight: 600;
    letter-spacing: 0.16em;
    text-transform: uppercase;
    color: var(--text-md);
    text-align: center;
    margin-bottom: 4px;
}

h1 #date {
    color: var(--teal);
}

/* ── Price Card ───────────────────────────────────── */

.price-card {
    background: var(--surface);
    border: 1px solid var(--border-hi);
    border-radius: var(--radius-lg);
    padding: 32px 28px;
    text-align: center;
    position: relative;
    overflow: hidden;
    transition: border-color 0.3s;
}

.price-card::before {
    content: '';
    position: absolute;
    top: 0; left: 0; right: 0;
    height: 1px;
    background: linear-gradient(90deg, transparent, var(--teal), transparent);
    opacity: 0.6;
}

.price-card::after {
    content: 'USD / BRL';
    position: absolute;
    top: 14px; right: 20px;
    font-family: 'DM Mono', monospace;
    font-size: 10px;
    letter-spacing: 0.12em;
    color: var(--text-lo);
}

.price-card:hover {
    border-color: var(--teal-glow);
}

.price-card p {
    font-size: 13px;
    font-weight: 600;
    letter-spacing: 0.1em;
    text-transform: uppercase;
    color: var(--text-md);
    margin-bottom: 10px;
}

.price-card #price {
    display: block;
    font-family: 'DM Mono', monospace;
    font-size: 52px;
    font-weight: 500;
    letter-spacing: -0.02em;
    color: var(--teal);
    line-height: 1;
    text-shadow: 0 0 40px var(--teal-glow), 0 0 80px rgba(0,212,170,0.1);
    margin-top: 6px;
}

/* ── Section headings ─────────────────────────────── */

h2 {
    font-size: 11px;
    font-weight: 700;
    letter-spacing: 0.18em;
    text-transform: uppercase;
    color: var(--text-lo);
    margin-bottom: 16px;
}

/* ── Converter ────────────────────────────────────── */

.converter {
    background: var(--surface);
    border: 1px solid var(--border);
    border-radius: var(--radius-lg);
    padding: 24px 28px;
}

.input-row {
    display: flex;
    gap: 12px;
}

.input-group {
    flex: 1;
}

.input-group label {
    display: block;
    font-family: 'DM Mono', monospace;
    font-size: 10px;
    letter-spacing: 0.14em;
    color: var(--text-lo);
    text-transform: uppercase;
    margin-bottom: 8px;
}

.input-group input {
    width: 100%;
    padding: 12px 14px;
    font-family: 'DM Mono', monospace;
    font-size: 18px;
    font-weight: 400;
    background: var(--surface-2);
    border: 1px solid var(--border);
    border-radius: var(--radius-sm);
    color: var(--text-hi);
    transition: border-color 0.2s, box-shadow 0.2s;
    -moz-appearance: textfield;
}

.input-group input::-webkit-outer-spin-button,
.input-group input::-webkit-inner-spin-button {
    -webkit-appearance: none;
}

.input-group input::placeholder { color: var(--text-lo); }

.input-group input:focus {
    outline: none;
    border-color: rgba(0,212,170,0.4);
    box-shadow: 0 0 0 3px rgba(0,212,170,0.07);
}

/* ── Chart ────────────────────────────────────────── */

.chart-card {
    background: var(--surface);
    border: 1px solid var(--border);
    border-radius: var(--radius-lg);
    padding: 24px 24px 20px;
}

canvas { max-width: 100%; display: block; }

/* ── Crypto / FX row ──────────────────────────────── */

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

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

/* shared token card base */
.token-card {
    background: var(--surface);
    border: 1px solid var(--border);
    border-radius: var(--radius);
    padding: 20px;
    position: relative;
    overflow: hidden;
    transition: border-color 0.25s, transform 0.2s;
}

.token-card:hover {
    transform: translateY(-2px);
}

.token-card .card-label {
    font-family: 'DM Mono', monospace;
    font-size: 10px;
    letter-spacing: 0.15em;
    text-transform: uppercase;
    color: var(--text-lo);
    margin-bottom: 10px;
    display: block;
}

.token-card .card-value {
    font-family: 'DM Mono', monospace;
    font-size: 22px;
    font-weight: 500;
    letter-spacing: -0.01em;
    line-height: 1;
}

.token-card .card-name {
    font-size: 11px;
    font-weight: 600;
    letter-spacing: 0.1em;
    text-transform: uppercase;
    color: var(--text-md);
    margin-top: 6px;
    display: block;
}

/* BTC — amber */
.btc-card {
    border-color: rgba(245,166,35,0.15);
}
.btc-card:hover { border-color: var(--amber-glow); }
.btc-card::before {
    content: '';
    position: absolute;
    top: 0; left: 0; right: 0;
    height: 1px;
    background: linear-gradient(90deg, transparent, var(--amber), transparent);
    opacity: 0.5;
}
.btc-card .card-value { color: var(--amber); text-shadow: 0 0 24px var(--amber-glow); }

/* ETH — purple */
.eth-card {
    border-color: rgba(155,127,232,0.15);
}
.eth-card:hover { border-color: var(--purple-dim); }
.eth-card::before {
    content: '';
    position: absolute;
    top: 0; left: 0; right: 0;
    height: 1px;
    background: linear-gradient(90deg, transparent, var(--purple), transparent);
    opacity: 0.5;
}
.eth-card .card-value { color: var(--purple); text-shadow: 0 0 24px var(--purple-dim); }

/* EUR — cyan */
.eur-card {
    border-color: rgba(0,187,212,0.15);
}
.eur-card:hover { border-color: rgba(0,187,212,0.35); }
.eur-card::before {
    content: '';
    position: absolute;
    top: 0; left: 0; right: 0;
    height: 1px;
    background: linear-gradient(90deg, transparent, rgba(0,187,212,1), transparent);
    opacity: 0.5;
}
.eur-card .card-value { color: rgba(0,187,212,1); text-shadow: 0 0 24px rgba(0,187,212,0.28); }

/* CAD — cool steel */
.cad-card {
    border-color: rgba(120,160,220,0.15);
}
.cad-card:hover { border-color: rgba(120,160,220,0.3); }
.cad-card::before {
    content: '';
    position: absolute;
    top: 0; left: 0; right: 0;
    height: 1px;
    background: linear-gradient(90deg, transparent, #78a0dc, transparent);
    opacity: 0.5;
}
.cad-card .card-value { color: #78a0dc; text-shadow: 0 0 24px rgba(120,160,220,0.25); }

/* ── Legacy selectors (keep HTML p tags working) ──── */

.btc-card p, .eth-card p { display: contents; }
.btc-card p *, .eth-card p * { display: contents; }

/* ── Fade-in animation ────────────────────────────── */

@keyframes fadeUp {
    from { opacity: 0; transform: translateY(12px); }
    to   { opacity: 1; transform: translateY(0); }
}

.container > * {
    animation: fadeUp 0.5s ease both;
}
.container > *:nth-child(1) { animation-delay: 0s; }
.container > *:nth-child(2) { animation-delay: 0.06s; }
.container > *:nth-child(3) { animation-delay: 0.12s; }
.container > *:nth-child(4) { animation-delay: 0.18s; }
.container > *:nth-child(5) { animation-delay: 0.24s; }
.container > *:nth-child(6) { animation-delay: 0.30s; }
.container > *:nth-child(7) { animation-delay: 0.36s; }

/* ── Responsive ───────────────────────────────────── */

@media (max-width: 480px) {
    body { padding: 32px 14px 60px; }

    .price-card #price { font-size: 42px; }

    .cards-row, .fx-row {
        grid-template-columns: 1fr 1fr;
        gap: 10px;
    }

    .token-card .card-value { font-size: 18px; }

    .input-group input { font-size: 16px; }
}