/* ─── Variables ─────────────────────────── */
:root {
    --primary: #4a7cff;
    --primary-dark: #111214;
    --success: #22c55e;
    --danger: #e05252;
    --warning: #f59e0b;
    --text-muted: #a8adb8;
    --border: #2e3038;
    --radius: 8px;
    --bg-page: #1a1b1e;
    --bg-surface: #25262b;
    --bg-dark: #111214;
    --text: #e1e3e8;
    --text-secondary: #c1c4ce;
}

/* ─── Reset básico ──────────────────────── */
* {
    box-sizing: border-box;
}

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

/* ─── Layout ────────────────────────────── */
.page-content {
    max-width: 900px;
    margin: 0 auto;
    padding: 20px;
}

.form-container {
    max-width: 500px;
}

.auth-container {
    max-width: 400px;
    margin: 80px auto;
    background: var(--bg-surface);
    border: 1px solid var(--border);
    border-radius: var(--radius);
    padding: 32px;
}

/* ─── Navbar ────────────────────────────── */
.navbar {
    padding: 10px 20px;
    background: var(--bg-dark);
    color: var(--text);
    display: flex;
    gap: 16px;
    align-items: center;
    border-bottom: 1px solid var(--border);
}

    .navbar a {
        color: var(--text-secondary);
        text-decoration: none;
        transition: color 0.15s;
    }

        .navbar a:hover {
            color: var(--text);
        }

    .navbar .nav-right {
        margin-left: auto;
        display: flex;
        gap: 12px;
        align-items: center;
    }

    .navbar .rol-label {
        font-size: 0.85em;
        color: var(--text-muted);
    }

/* ─── Botones ───────────────────────────── */
.btn {
    padding: 8px 16px;
    border: none;
    border-radius: var(--radius);
    cursor: pointer;
    text-decoration: none;
    font-size: 0.9em;
    display: inline-block;
    transition: opacity 0.15s;
    background: #3a3d45; /* ← botones sin clase de color: gris visible */
    color: var(--text);
}

.btn-primary {
    background: var(--primary);
    color: white;
}

.btn-success {
    background: #16a34a;
    color: white;
}

.btn-danger {
    background: var(--danger);
    color: white;
}

.btn-sm {
    padding: 4px 10px;
    font-size: 0.85em;
}

.btn:disabled {
    opacity: 0.5;
    cursor: not-allowed;
}

.btn:hover:not(:disabled) {
    opacity: 0.85;
}

/* ─── Formularios ───────────────────────── */
.form-group {
    margin-bottom: 14px;
}

    .form-group label {
        display: block;
        margin-bottom: 5px;
        font-weight: 500;
        font-size: 0.9em;
        color: var(--text-secondary);
    }

    .form-group input,
    .form-group select,
    input[type="number"],
    input[type="text"],
    input[type="email"],
    input[type="password"],
    input[type="date"],
    input[type="datetime-local"],
    select { /* ← cubre inputs fuera de .form-group */
        display: block;
        width: 100%;
        padding: 9px 12px;
        background: var(--bg-page);
        border: 1px solid var(--border);
        border-radius: var(--radius);
        color: var(--text);
        font-size: 0.95em;
        transition: border-color 0.15s;
    }

input[type="number"] {
    width: auto;
}
/* los numéricos inline no deben ser 100% */
input:focus,
select:focus {
    outline: none;
    border-color: var(--primary);
}

input::placeholder {
    color: var(--text-muted);
}

/* ─── Tarjetas ──────────────────────────── */
.card {
    background: var(--bg-surface);
    border: 1px solid var(--border);
    border-radius: var(--radius);
    padding: 16px;
    color: var(--text);
}

    .card p {
        color: var(--text-secondary);
        margin: 4px 0;
    }
    /* ← p dentro de card */
    .card strong {
        color: var(--text);
    }

.card-grid {
    display: flex;
    flex-wrap: wrap;
    gap: 16px;
}

.card-student {
    width: 200px;
}

/* ─── Stats (panel admin) ───────────────── */
.stats-grid {
    display: flex;
    gap: 16px;
    flex-wrap: wrap;
    margin-bottom: 32px;
}

.stat-card {
    border-radius: 10px;
    padding: 20px;
    min-width: 150px;
    text-align: center;
    color: white;
}

    .stat-card p {
        margin: 0;
        color: rgba(255,255,255,0.85);
    }

    .stat-card .stat-number {
        font-size: 2em;
        font-weight: bold;
        color: white;
    }

.stat-primary {
    background: #1e3a6e;
}

.stat-warning {
    background: #6b3f00;
}

.stat-success {
    background: #14532d;
}

/* ─── Tabla ─────────────────────────────── */
.table {
    width: 100%;
    border-collapse: collapse;
    margin-top: 16px;
}

    .table th {
        background: var(--bg-dark);
        color: var(--text-muted);
        text-align: left;
        padding: 10px 12px;
        font-weight: 500;
        font-size: 0.85em;
        text-transform: uppercase;
        letter-spacing: 0.03em;
    }

    .table td {
        padding: 10px 12px;
        border-bottom: 1px solid var(--border);
        color: var(--text-secondary);
        background: var(--bg-page); 
    }

    .table tr:last-child td {
        border-bottom: none;
    }

    .table tr:hover td {
        background: var(--bg-surface); 
        color: var(--text); 
    }

    .table td select {
        width: auto;
        padding: 4px 8px;
        font-size: 0.85em;
        background: var(--bg-page);
        border: 1px solid var(--border);
        border-radius: var(--radius);
        color: var(--text);
    }

/* ─── Badge de estado ───────────────────── */
.badge {
    padding: 4px 10px;
    border-radius: 12px;
    font-size: 0.82em;
    font-weight: 500;
}

.badge-success {
    background: #14532d;
    color: #4ade80;
}

.badge-danger {
    background: #450a0a;
    color: #f87171;
}

.badge-warning {
    background: #3a2a00;
    color: #fbbf24;
}

.badge-primary {
    background: #1a2d5a;
    color: #93b4ff;
}


/* ─── Sesiones ──────────────────────────── */
.session-item {
    background: var(--bg-surface);
    border: 1px solid var(--border);
    border-radius: var(--radius);
    padding: 16px;
    display: flex;
    justify-content: space-between;
    align-items: center;
    transition: border-color 0.15s;
}

    .session-item:hover {
        border-color: #444750;
    }

    .session-item p {
        color: var(--text-secondary);
        margin: 4px 0;
    }

    .session-item strong {
        color: var(--text);
    }

.session-list {
    display: flex;
    flex-direction: column;
    gap: 12px;
    margin-top: 16px;
}

/* ─── Upload zona ───────────────────────── */
.upload-zone {
    background: var(--bg-surface);
    border: 1px dashed #444750;
    border-radius: var(--radius);
    padding: 20px;
    margin-top: 16px;
}


/* ─── Mensajes ──────────────────────────── */
.text-error {
    color: #f87171 !important;
}

.text-success {
    color: #4ade80 !important;
}

.text-muted {
    color: #a8adb8 !important;
}

/* ─── Utilidades ─────────────────────────── */
.flex {
    display: flex;
}

.flex-between {
    display: flex;
    justify-content: space-between;
    align-items: center;
}

.gap-sm {
    gap: 8px;
}

.gap-md {
    gap: 16px;
}

.mt-sm {
    margin-top: 8px;
}

.mt-md {
    margin-top: 16px;
}

.mt-lg {
    margin-top: 24px;
}

.back-link {
    font-size: 0.9em;
    text-decoration: none;
    color: var(--primary);
}

    .back-link:hover {
        opacity: 0.8;
    }

/* ─── Headings y texto global ────────────── */
h2, h3, h4 {
    color: var(--text);
}

p {
    color: var(--text-secondary);
}

a {
    color: var(--primary);
}

strong {
    color: var(--text);
}

label {
    color: var(--text-secondary);
}

/* ─── Blazor error UI ───────────────────── */
#blazor-error-ui {
    display: none;
    background: #2a1a1a;
    color: #f87171;
    border-top: 1px solid #450a0a;
    bottom: 0;
    left: 0;
    padding: 0.6rem 1.25rem 0.7rem;
    position: fixed;
    width: 100%;
    z-index: 1000;
}

    #blazor-error-ui .dismiss {
        cursor: pointer;
        position: absolute;
        right: 0.75rem;
        top: 0.5rem;
    }