:root {
    --bg: #0f172a;
    --panel: #1e293b;
    --border: #334155;
    --text: #e2e8f0;
    --muted: #94a3b8;
    --accent: #2563eb;
    --ok: #16a34a;
    --warn: #dc2626;
}

* { box-sizing: border-box; }

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

header {
    display: flex;
    align-items: center;
    gap: 1.5rem;
    padding: 0.75rem 1.5rem;
    background: var(--panel);
    border-bottom: 1px solid var(--border);
}

header .brand { font-weight: 700; color: var(--text); text-decoration: none; font-size: 1.1rem; }
header nav { display: flex; gap: 1rem; }
header nav a, header .logout { color: var(--muted); text-decoration: none; }
header nav a:hover, header .logout:hover { color: var(--text); }
header .search { margin-left: auto; }
header .search input { padding: 0.4rem 0.6rem; border-radius: 6px; border: 1px solid var(--border); background: var(--bg); color: var(--text); }

main { max-width: 1000px; margin: 2rem auto; padding: 0 1.5rem; }

h1 { margin-top: 0; }
.meta, .breadcrumb { color: var(--muted); font-size: 0.9rem; }
.breadcrumb a { color: var(--muted); }

table { width: 100%; border-collapse: collapse; margin-top: 1rem; }
th, td { text-align: left; padding: 0.6rem 0.8rem; border-bottom: 1px solid var(--border); }
th { color: var(--muted); font-weight: 600; font-size: 0.85rem; text-transform: uppercase; }
tr:hover td { background: rgba(255,255,255,0.02); }
a { color: var(--accent); }

.badge { padding: 0.15rem 0.5rem; border-radius: 999px; font-size: 0.85rem; font-weight: 600; }
.badge.ok { background: rgba(22,163,74,0.15); color: var(--ok); }
.badge.warn { background: rgba(220,38,38,0.15); color: var(--warn); }

.tabs { display: flex; gap: 0.5rem; margin-bottom: 1rem; }
.tabs a { padding: 0.4rem 0.9rem; border-radius: 6px; text-decoration: none; color: var(--muted); border: 1px solid var(--border); }
.tabs a.active { background: var(--accent); color: white; border-color: var(--accent); }

button {
    background: var(--accent);
    color: white;
    border: none;
    padding: 0.5rem 1rem;
    border-radius: 6px;
    cursor: pointer;
    font-size: 0.9rem;
}
button:hover { opacity: 0.9; }
form.inline { display: inline-block; margin: 0.5rem 0; }

.rango-selector { display: flex; gap: 0.4rem; margin: 1rem 0 0.5rem; }
.rango-selector button { background: var(--panel); border: 1px solid var(--border); color: var(--muted); }
.rango-selector button.active { background: var(--accent); border-color: var(--accent); color: white; }

.evento-abierto td { background: rgba(220,38,38,0.08); }

.login-body { display: flex; align-items: center; justify-content: center; height: 100vh; }
.login-box { display: flex; flex-direction: column; gap: 0.75rem; width: 280px; background: var(--panel); padding: 2rem; border-radius: 10px; border: 1px solid var(--border); }
.login-box h1 { margin: 0 0 0.5rem; text-align: center; font-size: 1.3rem; }
.login-box input { padding: 0.6rem; border-radius: 6px; border: 1px solid var(--border); background: var(--bg); color: var(--text); }
.login-box .error { color: var(--warn); font-size: 0.85rem; margin: 0; }

@media (prefers-color-scheme: light) {
    :root {
        --bg: #f8fafc;
        --panel: #ffffff;
        --border: #e2e8f0;
        --text: #0f172a;
        --muted: #64748b;
    }
}