/* === MAIN.CSS === */
/* assets/css/main.css */
/* НАЗНАЧЕНИЕ: Dev Terminal эстетика - монитор курсов обмена USDT */
/* СВЯЗИ: index.php, assets/js/app.js */

:root {
    /* OKLCH палитра - dark (дефолт) */
    --bg-primary: oklch(0.18 0.012 250);
    --bg-card: oklch(0.22 0.014 250);
    --bg-elevated: oklch(0.26 0.016 250);
    --border-subtle: oklch(0.32 0.02 250 / 0.6);
    --border-strong: oklch(0.40 0.025 250);

    --text-primary: oklch(0.96 0.005 250);
    --text-muted: oklch(0.68 0.015 250);
    --text-faint: oklch(0.52 0.015 250);

    --accent: oklch(0.78 0.16 155);          /* зелёный - выгодно */
    --accent-dim: oklch(0.78 0.16 155 / 0.15);
    --warn: oklch(0.80 0.15 75);             /* жёлтый - средне */
    --danger: oklch(0.68 0.20 25);           /* красный - невыгодно */
    --info: oklch(0.72 0.13 230);            /* синий - инфо */

    --font-mono: 'JetBrains Mono', ui-monospace, 'SF Mono', Menlo, monospace;
    --font-body: 'Inter', system-ui, sans-serif;

    --radius-sm: 6px;
    --radius: 10px;
    --radius-lg: 14px;

    --ease-out-quart: cubic-bezier(0.25, 1, 0.5, 1);
    --shadow: 0 2px 12px oklch(0 0 0 / 0.25);
}

html.light-theme {
    --bg-primary: oklch(0.97 0.005 250);
    --bg-card: oklch(1 0 0);
    --bg-elevated: oklch(0.99 0.004 250);
    --border-subtle: oklch(0.88 0.01 250 / 0.8);
    --border-strong: oklch(0.80 0.015 250);

    --text-primary: oklch(0.22 0.015 250);
    --text-muted: oklch(0.45 0.015 250);
    --text-faint: oklch(0.60 0.012 250);

    --accent: oklch(0.58 0.16 155);
    --accent-dim: oklch(0.58 0.16 155 / 0.12);
    --warn: oklch(0.65 0.14 75);
    --danger: oklch(0.58 0.20 25);
    --shadow: 0 2px 12px oklch(0 0 0 / 0.08);
}

.no-transition, .no-transition * { transition: none !important; }

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

body {
    background: var(--bg-primary);
    color: var(--text-primary);
    font-family: var(--font-body);
    font-size: 14px;
    line-height: 1.5;
    -webkit-font-smoothing: antialiased;
    transition: background 0.3s var(--ease-out-quart), color 0.3s var(--ease-out-quart);
    min-height: 100vh;
}

@media (prefers-reduced-motion: reduce) {
    *, *::before, *::after { animation-duration: 0.01ms !important; transition-duration: 0.01ms !important; }
}

.wrap { max-width: 1240px; margin: 0 auto; padding: 16px; }

/* === Header === */
.topbar {
    display: flex;
    align-items: center;
    justify-content: space-between;
    gap: 12px;
    padding: 14px 0;
    border-bottom: 1px solid var(--border-subtle);
    margin-bottom: 18px;
    flex-wrap: wrap;
}
.brand {
    display: flex;
    align-items: baseline;
    gap: 10px;
    font-family: var(--font-mono);
}
.brand h1 { font-size: 17px; font-weight: 700; letter-spacing: -0.02em; }
.brand .tag {
    font-size: 10px;
    color: var(--accent);
    background: var(--accent-dim);
    padding: 2px 7px;
    border-radius: 5px;
    text-transform: uppercase;
    letter-spacing: 0.05em;
}
.topbar-right { display: flex; align-items: center; gap: 10px; }
.updated {
    font-family: var(--font-mono);
    font-size: 11px;
    color: var(--text-faint);
    white-space: nowrap;
}
.btn {
    font-family: var(--font-mono);
    font-size: 12px;
    color: var(--text-primary);
    background: var(--bg-elevated);
    border: 1px solid var(--border-subtle);
    border-radius: var(--radius-sm);
    padding: 7px 12px;
    cursor: pointer;
    transition: all 0.15s var(--ease-out-quart);
    display: inline-flex;
    align-items: center;
    gap: 6px;
}
.btn:hover { border-color: var(--border-strong); background: var(--bg-card); }
.btn:active { transform: translateY(1px); }
.icon-btn { padding: 7px; }
.icon-btn svg { display: block; }

.mode-icon-light { display: none; }
.mode-icon-dark { display: block; }
html.light-theme .mode-icon-light { display: block; }
html.light-theme .mode-icon-dark { display: none; }

/* === Banner: лучший вариант === */
.hero-best {
    background: linear-gradient(135deg, var(--accent-dim), transparent 70%);
    border: 1px solid var(--accent);
    border-radius: var(--radius-lg);
    padding: 16px 18px;
    margin-bottom: 18px;
    display: flex;
    align-items: center;
    justify-content: space-between;
    gap: 14px;
    flex-wrap: wrap;
}
.hero-best .label { font-size: 11px; color: var(--text-muted); text-transform: uppercase; letter-spacing: 0.06em; }
.hero-best .val {
    font-family: var(--font-mono);
    font-size: 30px;
    font-weight: 700;
    color: var(--accent);
    line-height: 1;
    margin-top: 4px;
}
.hero-best .sub { font-size: 13px; color: var(--text-muted); margin-top: 6px; }
.hero-best .sub b { color: var(--text-primary); }

/* === Grid направлений === */
.grid {
    display: grid;
    grid-template-columns: repeat(auto-fill, minmax(360px, 1fr));
    gap: 12px;
}
.card {
    background: var(--bg-card);
    border: 1px solid var(--border-subtle);
    border-radius: var(--radius);
    padding: 14px;
    transition: border-color 0.15s var(--ease-out-quart);
}
.card:hover { border-color: var(--border-strong); }
.card-head {
    display: flex;
    align-items: flex-start;
    justify-content: space-between;
    gap: 8px;
    margin-bottom: 12px;
}
.card-title { font-size: 13px; font-weight: 600; line-height: 1.3; }
.badge {
    flex: 0 0 auto;
    white-space: nowrap;
    font-family: var(--font-mono);
    font-size: 9px;
    padding: 3px 7px;
    border-radius: 5px;
    text-transform: uppercase;
    letter-spacing: 0.04em;
}
.badge.cash { background: var(--accent-dim); color: var(--accent); }
.badge.cashless { background: oklch(0.72 0.13 230 / 0.15); color: var(--info); }

.card-best {
    display: flex;
    align-items: baseline;
    gap: 8px;
    margin-bottom: 4px;
}
.card-best .num {
    font-family: var(--font-mono);
    font-size: 26px;
    font-weight: 700;
    line-height: 1;
}
.card-best .unit { font-family: var(--font-mono); font-size: 13px; color: var(--text-muted); }
.card-best .loss {
    margin-left: auto;
    font-family: var(--font-mono);
    font-size: 11px;
    padding: 2px 7px;
    border-radius: 5px;
    white-space: nowrap;
}
.loss.good { background: var(--accent-dim); color: var(--accent); }
.loss.mid { background: oklch(0.80 0.15 75 / 0.15); color: var(--warn); }
.loss.bad { background: oklch(0.68 0.20 25 / 0.15); color: var(--danger); }

.card-meta {
    font-size: 11px;
    color: var(--text-faint);
    font-family: var(--font-mono);
    margin-bottom: 12px;
}
.card-meta b { color: var(--text-muted); }

/* Топ обменников */
.changers { display: flex; flex-direction: column; gap: 1px; }
.changer-row {
    display: flex;
    align-items: center;
    gap: 8px;
    padding: 6px 8px;
    border-radius: var(--radius-sm);
    font-family: var(--font-mono);
    font-size: 12px;
    transition: background 0.12s;
}
.changer-row:hover { background: var(--bg-elevated); }
.changer-row .rank { color: var(--text-faint); width: 16px; flex: 0 0 auto; }
.changer-row .name { flex: 1 1 auto; color: var(--text-primary); white-space: nowrap; overflow: hidden; text-overflow: ellipsis; }
.changer-row .rate { flex: 0 0 auto; font-weight: 600; }
.changer-row .rev { flex: 0 0 auto; font-size: 10px; color: var(--text-faint); white-space: nowrap; }
.changer-row .v { color: var(--accent); font-size: 10px; flex: 0 0 auto; }

/* Кнопка графика */
.card-foot { margin-top: 10px; display: flex; gap: 8px; }
.link-chart {
    font-family: var(--font-mono);
    font-size: 11px;
    color: var(--info);
    background: none;
    border: none;
    cursor: pointer;
    padding: 4px 0;
    text-decoration: underline;
    text-underline-offset: 2px;
}

/* === Чужой курс (сравнение) === */
.compare {
    background: var(--bg-card);
    border: 1px solid var(--border-subtle);
    border-radius: var(--radius);
    padding: 14px;
    margin-bottom: 18px;
    display: flex;
    align-items: center;
    gap: 12px;
    flex-wrap: wrap;
}
.compare label { font-size: 12px; color: var(--text-muted); font-family: var(--font-mono); }
.compare input, .compare select {
    font-family: var(--font-mono);
    font-size: 13px;
    background: var(--bg-elevated);
    color: var(--text-primary);
    border: 1px solid var(--border-subtle);
    border-radius: var(--radius-sm);
    padding: 6px 9px;
    width: 90px;
}
.compare select { width: auto; }
.compare .verdict {
    font-family: var(--font-mono);
    font-size: 13px;
    font-weight: 600;
    margin-left: auto;
    white-space: nowrap;
}

/* === States === */
.loading, .empty {
    text-align: center;
    padding: 50px 20px;
    color: var(--text-faint);
    font-family: var(--font-mono);
    font-size: 13px;
}
.skeleton {
    background: linear-gradient(90deg, var(--bg-card) 25%, var(--bg-elevated) 50%, var(--bg-card) 75%);
    background-size: 200% 100%;
    animation: shimmer 1.4s infinite;
    border-radius: var(--radius);
    height: 200px;
}
@keyframes shimmer { 0% { background-position: 200% 0; } 100% { background-position: -200% 0; } }

.footer {
    margin-top: 28px;
    padding-top: 14px;
    border-top: 1px solid var(--border-subtle);
    font-family: var(--font-mono);
    font-size: 11px;
    color: var(--text-faint);
    text-align: center;
}
.footer a { color: var(--text-muted); }

/* === Modal графика (нативный dialog) === */
dialog.chart-modal {
    background: var(--bg-card);
    color: var(--text-primary);
    border: 1px solid var(--border-strong);
    border-radius: var(--radius-lg);
    padding: 18px;
    max-width: 720px;
    width: 92vw;
    box-shadow: var(--shadow);
}
dialog.chart-modal::backdrop { background: oklch(0 0 0 / 0.6); backdrop-filter: blur(2px); }
.chart-modal h3 { font-family: var(--font-mono); font-size: 14px; margin-bottom: 12px; }
.chart-modal .close-x {
    position: absolute; top: 14px; right: 16px;
    background: none; border: none; color: var(--text-muted);
    font-size: 20px; cursor: pointer; line-height: 1;
}

@media (max-width: 560px) {
    .grid { grid-template-columns: 1fr; }
    .hero-best .val { font-size: 24px; }
    .wrap { padding: 12px; }
}