:root {
    --navy: #0a1f44;
    --navy-light: #123166;
    --gold: #c9a227;
    --gold-light: #e6c65c;
    --gray-bg: #f4f6fb;
    --text: #1c2333;
    --danger: #b00020;
    --success: #1a7a3c;
}

* { box-sizing: border-box; }

body {
    margin: 0;
    font-family: 'Segoe UI', Arial, sans-serif;
    background: var(--gray-bg);
    color: var(--text);
}

/* --- Pantalla de login --- */
.login-wrap {
    min-height: 100vh;
    display: flex;
    align-items: center;
    justify-content: center;
    background: linear-gradient(135deg, var(--navy) 0%, var(--navy-light) 100%);
    padding: 20px;
}

.login-card {
    background: #fff;
    width: 100%;
    max-width: 380px;
    border-radius: 14px;
    padding: 36px 32px;
    box-shadow: 0 20px 50px rgba(0,0,0,0.35);
    border-top: 6px solid var(--gold);
}

.login-card h1 {
    font-size: 1.3rem;
    color: var(--navy);
    margin: 0 0 4px;
    text-align: center;
}

.login-card .sub {
    text-align: center;
    color: #666;
    font-size: 0.85rem;
    margin-bottom: 24px;
}

.login-card label {
    display: block;
    font-size: 0.82rem;
    font-weight: 600;
    color: var(--navy);
    margin: 14px 0 6px;
}

.login-card input[type=text],
.login-card input[type=password],
.login-card input[type=number],
.login-card select,
.login-card textarea {
    width: 100%;
    padding: 11px 12px;
    border: 1.5px solid #d7dce5;
    border-radius: 8px;
    font-size: 0.95rem;
}

.login-card input:focus, select:focus, textarea:focus {
    outline: none;
    border-color: var(--gold);
}

.btn {
    display: inline-block;
    background: var(--navy);
    color: #fff;
    border: none;
    padding: 12px 18px;
    border-radius: 8px;
    font-weight: 600;
    font-size: 0.95rem;
    cursor: pointer;
    text-decoration: none;
    text-align: center;
    transition: background 0.15s;
}
.btn:hover { background: var(--navy-light); }
.btn-gold { background: var(--gold); color: var(--navy); }
.btn-gold:hover { background: var(--gold-light); }
.btn-full { width: 100%; margin-top: 20px; }
.btn-sm { padding: 7px 12px; font-size: 0.82rem; }
.btn-danger { background: var(--danger); color: #fff; }

.error-msg {
    background: #fde8ea;
    color: var(--danger);
    padding: 10px 14px;
    border-radius: 8px;
    font-size: 0.85rem;
    margin-bottom: 12px;
}
.success-msg {
    background: #e6f4ea;
    color: var(--success);
    padding: 10px 14px;
    border-radius: 8px;
    font-size: 0.85rem;
    margin-bottom: 12px;
}

/* --- Layout interno --- */
.topbar {
    background: var(--navy);
    color: #fff;
    padding: 16px 24px;
    display: flex;
    align-items: center;
    justify-content: space-between;
    flex-wrap: wrap;
    gap: 10px;
}
.topbar .brand {
    font-weight: 700;
    letter-spacing: 0.3px;
}
.topbar .brand span { color: var(--gold-light); }
.topbar .user-info {
    font-size: 0.85rem;
    display: flex;
    align-items: center;
    gap: 14px;
}
.topbar a.logout {
    color: #fff;
    background: rgba(255,255,255,0.12);
    padding: 7px 14px;
    border-radius: 6px;
    text-decoration: none;
    font-size: 0.82rem;
}
.topbar a.logout:hover { background: rgba(255,255,255,0.22); }

.container {
    max-width: 1000px;
    margin: 30px auto;
    padding: 0 20px;
}

.card {
    background: #fff;
    border-radius: 12px;
    padding: 24px;
    box-shadow: 0 2px 10px rgba(0,0,0,0.06);
    margin-bottom: 20px;
}
.card h2 {
    color: var(--navy);
    font-size: 1.1rem;
    margin-top: 0;
    border-bottom: 2px solid var(--gold);
    padding-bottom: 10px;
}

table {
    width: 100%;
    border-collapse: collapse;
    font-size: 0.9rem;
}
th, td {
    text-align: left;
    padding: 10px 12px;
    border-bottom: 1px solid #eaedf3;
}
th {
    background: var(--gray-bg);
    color: var(--navy);
    font-size: 0.78rem;
    text-transform: uppercase;
    letter-spacing: 0.4px;
}
tr:hover td { background: #fafbfe; }

.badge {
    display: inline-block;
    padding: 3px 10px;
    border-radius: 20px;
    font-size: 0.75rem;
    font-weight: 600;
}
.badge-conductor { background: #dbe6ff; color: #1a3d8f; }
.badge-ayudante { background: #fdf0d5; color: #8a6100; }

.form-grid {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 14px 18px;
}
.form-grid .full { grid-column: 1 / -1; }
@media (max-width: 640px) {
    .form-grid { grid-template-columns: 1fr; }
}

label { font-size: 0.82rem; font-weight: 600; color: var(--navy); display:block; margin-bottom: 5px;}
input, select, textarea {
    width: 100%;
    padding: 9px 11px;
    border: 1.5px solid #d7dce5;
    border-radius: 7px;
    font-size: 0.9rem;
    font-family: inherit;
}

.empty-state {
    text-align: center;
    color: #888;
    padding: 40px 20px;
}

.nav-tabs {
    display: flex;
    gap: 8px;
    margin-bottom: 20px;
    flex-wrap: wrap;
}
.nav-tabs a {
    text-decoration: none;
    padding: 9px 16px;
    border-radius: 8px;
    background: #fff;
    color: var(--navy);
    font-size: 0.85rem;
    font-weight: 600;
    box-shadow: 0 1px 4px rgba(0,0,0,0.08);
}
.nav-tabs a.active { background: var(--navy); color: #fff; }