:root {
    --meltsan-navy: #1E2761;
    --meltsan-navy-dark: #12173d;
    --bg: #f4f6fb;
    --card-bg: #ffffff;
    --text: #1c2333;
    --muted: #6b7280;
    --border: #e3e7f0;
}

* { box-sizing: border-box; }

body {
    margin: 0;
    font-family: "Segoe UI", Roboto, -apple-system, sans-serif;
    background: var(--bg);
    color: var(--text);
}

.filter-bar {
    position: sticky;
    top: 0;
    z-index: 50;
    display: flex;
    align-items: center;
    gap: 16px;
    flex-wrap: wrap;
    background: var(--meltsan-navy);
    color: #fff;
    padding: 14px 24px;
    box-shadow: 0 2px 8px rgba(0,0,0,0.15);
}

.filter-bar .brand {
    font-weight: 700;
    font-size: 1.1rem;
    margin-right: auto;
}

.filter-bar label {
    font-size: 0.85rem;
    opacity: 0.85;
    margin-right: 6px;
}

.filter-bar input[type="date"] {
    border: none;
    border-radius: 6px;
    padding: 6px 10px;
    font-size: 0.9rem;
}

.filter-bar button {
    background: #fff;
    color: var(--meltsan-navy);
    border: none;
    border-radius: 6px;
    padding: 7px 16px;
    font-weight: 600;
    cursor: pointer;
    transition: opacity 0.15s;
}

.filter-bar button:hover { opacity: 0.85; }

.filter-bar .quick-ranges {
    display: flex;
    gap: 6px;
}

.filter-bar .quick-ranges button {
    background: rgba(255,255,255,0.12);
    color: #fff;
    font-weight: 500;
    padding: 6px 10px;
    font-size: 0.8rem;
}

#status-msg {
    font-size: 0.8rem;
    opacity: 0.9;
}

.logout-link {
    color: #fff;
    opacity: 0.75;
    font-size: 0.8rem;
    text-decoration: none;
    border: 1px solid rgba(255,255,255,0.3);
    border-radius: 6px;
    padding: 6px 10px;
}
.logout-link:hover { opacity: 1; background: rgba(255,255,255,0.08); }

.login-wrap {
    min-height: 100vh;
    display: flex;
    align-items: center;
    justify-content: center;
    background: linear-gradient(135deg, var(--meltsan-navy), var(--meltsan-navy-dark));
}

.login-card {
    background: #fff;
    border-radius: 14px;
    padding: 36px 32px;
    width: 100%;
    max-width: 360px;
    box-shadow: 0 12px 40px rgba(0,0,0,0.25);
    display: flex;
    flex-direction: column;
    gap: 10px;
}

.login-brand {
    font-weight: 700;
    color: var(--meltsan-navy);
    font-size: 0.85rem;
    text-transform: uppercase;
    letter-spacing: 0.04em;
}

.login-card h1 {
    margin: 0 0 8px;
    font-size: 1.3rem;
    color: var(--text);
}

.login-card label {
    font-size: 0.82rem;
    color: var(--muted);
    margin-top: 6px;
}

.login-card input {
    border: 1px solid var(--border);
    border-radius: 8px;
    padding: 10px 12px;
    font-size: 0.95rem;
}

.login-card button {
    margin-top: 14px;
    background: var(--meltsan-navy);
    color: #fff;
    border: none;
    border-radius: 8px;
    padding: 11px;
    font-weight: 600;
    cursor: pointer;
}
.login-card button:hover { opacity: 0.9; }

.login-error {
    background: #fef2f2;
    color: #b91c1c;
    border: 1px solid #fecaca;
    border-radius: 8px;
    padding: 8px 10px;
    font-size: 0.85rem;
}

main {
    padding: 24px;
    max-width: 1400px;
    margin: 0 auto;
}

.tables-row {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(320px, 1fr));
    gap: 16px;
    margin-bottom: 24px;
}

.charts-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(480px, 1fr));
    gap: 20px;
}

.card {
    background: var(--card-bg);
    border: 1px solid var(--border);
    border-radius: 12px;
    padding: 18px;
    box-shadow: 0 1px 3px rgba(0,0,0,0.04);
}

.card h3 {
    margin: 0 0 4px;
    font-size: 0.95rem;
    color: var(--meltsan-navy);
}

.card .subtitle {
    font-size: 0.75rem;
    color: var(--muted);
    margin-bottom: 12px;
}

.chart-box {
    position: relative;
    width: 100%;
    height: 340px; /* la altura real la ajusta dashboard.js según cuántas barras haya */
}

.table-card table {
    width: 100%;
    border-collapse: collapse;
    font-size: 0.9rem;
}

.table-card th, .table-card td {
    padding: 8px 6px;
    text-align: left;
    border-bottom: 1px solid var(--border);
}

.table-card th {
    color: var(--meltsan-navy);
    font-size: 0.8rem;
    text-transform: uppercase;
    letter-spacing: 0.02em;
}

.legend-note {
    font-size: 0.72rem;
    color: var(--muted);
    margin-top: 8px;
}

.empty-state {
    text-align: center;
    color: var(--muted);
    padding: 60px 20px;
}