:root {
    --tdc-ink: #0b1b3a;
    --tdc-primary: #0b3d91;
    --tdc-primary-600: #1449b8;
    --tdc-accent: #ffc107;
    --tdc-green: #1a7f4e;
    --tdc-red: #c0392b;
    --tdc-surface: #ffffff;
    --tdc-surface-muted: #f3f5fa;
    --tdc-border: #e4e8f1;
    --tdc-text: #0f172a;
    --tdc-text-muted: #475569;
}

[data-bs-theme="dark"] {
    --tdc-ink: #05112a;
    --tdc-surface: #0e1b33;
    --tdc-surface-muted: #17243f;
    --tdc-border: #22304f;
    --tdc-text: #e8eefb;
    --tdc-text-muted: #95a3c1;
}

html, body { background: var(--tdc-surface-muted); color: var(--tdc-text); }
body { font-family: -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto, "Helvetica Neue", Arial, sans-serif; }

a { color: var(--tdc-primary); text-decoration: none; }
a:hover { color: var(--tdc-primary-600); text-decoration: underline; }

/* ---------- Navbar ---------- */
.tdc-nav {
    background: linear-gradient(180deg, var(--tdc-ink) 0%, var(--tdc-primary) 100%);
    border-bottom: 1px solid rgba(255,255,255,.08);
    padding-top: .55rem; padding-bottom: .55rem;
}
.tdc-brand { letter-spacing: -.02em; font-size: 1.05rem; }
.tdc-logo {
    display: inline-flex; align-items: center; justify-content: center;
    width: 32px; height: 32px;
    border-radius: 8px;
    background: var(--tdc-accent); color: var(--tdc-ink);
    font-weight: 800; font-size: .78rem;
}
.tdc-nav .nav-link {
    color: rgba(255,255,255,.86) !important;
    font-weight: 500;
    border-radius: 8px;
    padding: .4rem .85rem;
}
.tdc-nav .nav-link:hover { background: rgba(255,255,255,.08); color: #fff !important; }
.tdc-nav .nav-link.active { background: rgba(255,255,255,.14); color: #fff !important; }

/* ---------- Hero ---------- */
.tdc-hero {
    background:
        radial-gradient(1200px 400px at 80% -20%, rgba(255,193,7,.18), transparent 60%),
        linear-gradient(135deg, var(--tdc-ink) 0%, var(--tdc-primary) 100%);
    color: #fff;
    padding: 3rem 0 6rem;
}
.tdc-hero h1 { font-weight: 800; letter-spacing: -.02em; }
.tdc-hero .eyebrow { color: var(--tdc-accent); font-weight: 600; letter-spacing: .04em; text-transform: uppercase; font-size: .78rem; }

/* ---------- Stat cards (overlap the hero) ---------- */
.tdc-stats { margin-top: -4rem; position: relative; z-index: 2; }
.tdc-stat-card {
    background: var(--tdc-surface);
    border: 1px solid var(--tdc-border);
    border-radius: 16px;
    padding: 20px;
    box-shadow: 0 10px 28px rgba(11,27,58,.08);
    height: 100%;
}
.tdc-stat-card .label { font-size: .78rem; font-weight: 600; text-transform: uppercase; letter-spacing: .06em; color: var(--tdc-text-muted); }
.tdc-stat-card .value { font-size: 2rem; font-weight: 800; letter-spacing: -.02em; color: var(--tdc-text); margin-top: 6px; }
.tdc-stat-card .meta { font-size: .8rem; color: var(--tdc-text-muted); margin-top: 4px; }
.tdc-stat-card.compra .value { color: var(--tdc-green); }
.tdc-stat-card.venta .value { color: var(--tdc-red); }

/* ---------- Section headings ---------- */
section > .container > h2.section-title {
    font-weight: 700;
    letter-spacing: -.02em;
    margin-bottom: 1.25rem;
}

/* ---------- Bank table ---------- */
.tdc-table-wrap {
    background: var(--tdc-surface);
    border: 1px solid var(--tdc-border);
    border-radius: 14px;
    overflow: hidden;
    box-shadow: 0 6px 18px rgba(11,27,58,.05);
}
.tdc-table { --bs-table-bg: transparent; margin-bottom: 0; color: var(--tdc-text); }
.tdc-table thead th {
    background: var(--tdc-surface-muted);
    color: var(--tdc-text-muted);
    font-size: .78rem;
    font-weight: 600;
    text-transform: uppercase;
    letter-spacing: .05em;
    border-bottom: 1px solid var(--tdc-border) !important;
    white-space: nowrap;
}
.tdc-table tbody tr { border-top: 1px solid var(--tdc-border); }
.tdc-table tbody tr:first-child { border-top: 0; }
.tdc-table tbody tr:hover { background: var(--tdc-surface-muted); }
.tdc-table td { vertical-align: middle; padding: 14px 12px; }
.tdc-table .inst-name { font-weight: 600; color: var(--tdc-text); }
.tdc-table .inst-kind {
    display: inline-block;
    font-size: .68rem;
    text-transform: uppercase;
    letter-spacing: .05em;
    font-weight: 600;
    color: var(--tdc-primary);
    background: rgba(11,61,145,.08);
    padding: 2px 8px;
    border-radius: 999px;
    margin-top: 3px;
}
[data-bs-theme="dark"] .tdc-table .inst-kind { background: rgba(255,193,7,.12); color: var(--tdc-accent); }
.tdc-table .rate { font-variant-numeric: tabular-nums; font-weight: 600; }
.tdc-table .rate.compra { color: var(--tdc-green); }
.tdc-table .rate.venta  { color: var(--tdc-red); }
.tdc-table .date { color: var(--tdc-text-muted); font-size: .85rem; white-space: nowrap; }
.tdc-table .spread { color: var(--tdc-text-muted); font-size: .85rem; font-variant-numeric: tabular-nums; }
.tdc-kind-filter .btn { border-radius: 999px; font-size: .8rem; }

/* ---------- Converter ---------- */
.tdc-convert input, .tdc-convert select {
    border-color: var(--tdc-border);
    background: var(--tdc-surface);
    color: var(--tdc-text);
}

/* ---------- News cards ---------- */
.tdc-news-card {
    position: relative;
    background: var(--tdc-surface);
    border: 1px solid var(--tdc-border);
    border-radius: 12px;
    height: 100%;
    transition: transform .15s ease, box-shadow .15s ease;
}
.tdc-news-card:hover { transform: translateY(-2px); box-shadow: 0 8px 22px rgba(11,27,58,.08); }
.tdc-news-card .source { color: var(--tdc-primary); font-weight: 600; font-size: .78rem; text-transform: uppercase; letter-spacing: .04em; }

/* ---------- Chart wrapper ---------- */
.tdc-chart-card {
    background: var(--tdc-surface);
    border: 1px solid var(--tdc-border);
    border-radius: 14px;
    padding: 18px;
    box-shadow: 0 6px 18px rgba(11,27,58,.05);
}

/* ---------- Footer ---------- */
footer { background: var(--tdc-surface); border-top: 1px solid var(--tdc-border); }

/* ---------- Theme toggle (swaps icon by mode) ---------- */
.tdc-theme-toggle .tdc-icon-light { display: none; }
[data-bs-theme="dark"] .tdc-theme-toggle .tdc-icon-dark { display: none; }
[data-bs-theme="dark"] .tdc-theme-toggle .tdc-icon-light { display: inline-block; }

/* ---------- Icon button (copy/share) ---------- */
.tdc-icon-btn {
    color: var(--tdc-text-muted);
    border: none;
    background: transparent;
    transition: color .15s ease, transform .1s ease;
}
.tdc-icon-btn:hover { color: var(--tdc-primary); transform: translateY(-1px); }
.tdc-icon-btn:focus-visible { outline: 2px solid var(--tdc-primary); border-radius: 4px; }

/* ---------- Toast ---------- */
.tdc-toast {
    position: fixed;
    bottom: 24px;
    left: 50%;
    transform: translateX(-50%) translateY(12px);
    background: var(--tdc-ink);
    color: #fff;
    padding: 10px 16px;
    border-radius: 999px;
    font-size: .9rem;
    box-shadow: 0 8px 22px rgba(0,0,0,.18);
    opacity: 0;
    pointer-events: none;
    transition: opacity .2s ease, transform .2s ease;
    z-index: 1080;
}
.tdc-toast.show { opacity: 1; transform: translateX(-50%) translateY(0); }

/* ---------- Accordion in dark mode ---------- */
[data-bs-theme="dark"] .accordion-item { background: var(--tdc-surface); border-color: var(--tdc-border); }
[data-bs-theme="dark"] .accordion-button { background: var(--tdc-surface); color: var(--tdc-text); }
[data-bs-theme="dark"] .accordion-button:not(.collapsed) { background: var(--tdc-surface-muted); color: var(--tdc-text); }

/* ---------- Utilities ---------- */
.tabular { font-variant-numeric: tabular-nums; }

@media (max-width: 576px) {
    .tdc-hero { padding: 2rem 0 5rem; }
    .tdc-stats { margin-top: -3.5rem; }
    .tdc-stat-card .value { font-size: 1.6rem; }
}

@media print {
    .tdc-nav, footer, .btn, canvas, .tdc-kind-filter { display: none !important; }
    body { color: #000; background: #fff; }
    .tdc-table-wrap { box-shadow: none; border: 1px solid #ccc; }
}