*,
*::before,
*::after {
    box-sizing: border-box;
    margin: 0;
    padding: 0;
}

body {
    font-family: var(--font-family);
    background: var(--background);
    color: var(--text);
    line-height: 1.6;
    min-height: 100vh;
    display: flex;
    flex-direction: column;
}

.container {
    width: min(960px, 92%);
    margin: 0 auto;
}

.site-header {
    background: var(--surface);
    border-bottom: 1px solid color-mix(in srgb, var(--text) 12%, transparent);
    padding: 1rem 0;
    box-shadow: 0 1px 3px rgba(0, 0, 0, 0.06);
}

.header-inner {
    display: flex;
    align-items: center;
    justify-content: space-between;
    gap: 1rem;
    flex-wrap: wrap;
}

.logo {
    font-size: 1.25rem;
    font-weight: 700;
    color: var(--primary);
    text-decoration: none;
}

.nav {
    display: flex;
    align-items: center;
    gap: 1rem;
    flex-wrap: wrap;
}

.nav a {
    color: var(--text);
    text-decoration: none;
    font-weight: 500;
}

.nav a:hover {
    color: var(--primary);
}

.nav-user {
    font-size: 0.9rem;
    opacity: 0.8;
}

.main-content {
    flex: 1;
    padding: 2rem 0 3rem;
}

.site-footer {
    padding: 1.25rem 0;
    text-align: center;
    font-size: 0.875rem;
    opacity: 0.7;
    border-top: 1px solid color-mix(in srgb, var(--text) 10%, transparent);
}

.card {
    background: var(--surface);
    border-radius: 12px;
    padding: 1.75rem;
    box-shadow: 0 4px 16px rgba(0, 0, 0, 0.06);
    border: 1px solid color-mix(in srgb, var(--text) 8%, transparent);
}

.card + .card {
    margin-top: 1.5rem;
}

.card h1,
.card h2 {
    margin-bottom: 0.75rem;
    color: var(--primary);
}

.card p.subtitle {
    margin-bottom: 1.5rem;
    opacity: 0.85;
}

.form-group {
    margin-bottom: 1.25rem;
}

.form-group label {
    display: block;
    margin-bottom: 0.4rem;
    font-weight: 600;
    font-size: 0.95rem;
}

.form-group input[type="text"],
.form-group input[type="password"],
.form-group select {
    width: 100%;
    padding: 0.65rem 0.85rem;
    border: 1px solid color-mix(in srgb, var(--text) 20%, transparent);
    border-radius: 8px;
    font-family: inherit;
    font-size: 1rem;
    background: var(--background);
    color: var(--text);
}

.form-group input[type="color"] {
    width: 100%;
    height: 42px;
    border: none;
    border-radius: 8px;
    cursor: pointer;
    background: transparent;
}

.form-row {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(200px, 1fr));
    gap: 1rem;
}

.btn {
    display: inline-block;
    padding: 0.65rem 1.25rem;
    border-radius: 8px;
    font-family: inherit;
    font-size: 0.95rem;
    font-weight: 600;
    text-decoration: none;
    border: 2px solid transparent;
    cursor: pointer;
    transition: opacity 0.15s, transform 0.15s;
}

.btn:hover {
    opacity: 0.92;
    transform: translateY(-1px);
}

.btn-primary {
    background: linear-gradient(135deg, var(--primary), var(--secondary));
    color: #fff;
}

.btn-outline {
    background: transparent;
    border-color: var(--primary);
    color: var(--primary);
}

.btn-sm {
    padding: 0.4rem 0.85rem;
    font-size: 0.85rem;
}

.btn-block {
    width: 100%;
    text-align: center;
}

.alert {
    padding: 0.85rem 1rem;
    border-radius: 8px;
    margin-bottom: 1.25rem;
    font-weight: 500;
}

.alert-success {
    background: #dcfce7;
    color: #166534;
    border: 1px solid #86efac;
}

.alert-error {
    background: #fee2e2;
    color: #991b1b;
    border: 1px solid #fca5a5;
}

.alert-info {
    background: #dbeafe;
    color: #1e40af;
    border: 1px solid #93c5fd;
}

.login-wrapper {
    max-width: 420px;
    margin: 2rem auto;
}

.quiz-question {
    margin-bottom: 1.75rem;
    padding-bottom: 1.75rem;
    border-bottom: 1px solid color-mix(in srgb, var(--text) 10%, transparent);
}

.quiz-question:last-of-type {
    border-bottom: none;
    margin-bottom: 0;
    padding-bottom: 0;
}

.quiz-question h3 {
    margin-bottom: 0.85rem;
    font-size: 1.05rem;
}

.option {
    display: flex;
    align-items: center;
    gap: 0.6rem;
    padding: 0.55rem 0;
    cursor: pointer;
}

.option input {
    accent-color: var(--primary);
    width: 18px;
    height: 18px;
}

.score-box {
    text-align: center;
    padding: 2rem;
}

.score-box .score-value {
    font-size: 3rem;
    font-weight: 800;
    background: linear-gradient(135deg, var(--primary), var(--secondary));
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
    background-clip: text;
}

.table {
    width: 100%;
    border-collapse: collapse;
    font-size: 0.95rem;
}

.table th,
.table td {
    padding: 0.75rem;
    text-align: left;
    border-bottom: 1px solid color-mix(in srgb, var(--text) 10%, transparent);
}

.table th {
    font-weight: 700;
    color: var(--primary);
}

.badge {
    display: inline-block;
    padding: 0.2rem 0.55rem;
    border-radius: 999px;
    font-size: 0.75rem;
    font-weight: 700;
    text-transform: uppercase;
}

.badge-admin {
    background: color-mix(in srgb, var(--primary) 15%, transparent);
    color: var(--primary);
}

.badge-user {
    background: color-mix(in srgb, var(--text) 10%, transparent);
    color: var(--text);
}

.badge-yes {
    background: #dcfce7;
    color: #166534;
}

.badge-no {
    background: #fee2e2;
    color: #991b1b;
}

.btn-danger {
    background: #dc2626;
    color: #fff;
    border-color: #dc2626;
}

.table-actions {
    display: flex;
    gap: 0.5rem;
    flex-wrap: wrap;
    align-items: center;
}

.inline-form {
    display: inline;
}

.checkbox-inline {
    display: flex;
    align-items: center;
    gap: 0.4rem;
}

.checkbox-inline input {
    accent-color: var(--primary);
}

.actions {
    display: flex;
    gap: 0.75rem;
    flex-wrap: wrap;
    margin-top: 1.5rem;
}

.preview-box {
    margin-top: 1.5rem;
    padding: 1.25rem;
    border-radius: 10px;
    border: 2px dashed color-mix(in srgb, var(--primary) 40%, transparent);
    background: var(--background);
}

.preview-box h3 {
    color: var(--primary);
    margin-bottom: 0.5rem;
}

.stats-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(180px, 1fr));
    gap: 1rem;
    margin-bottom: 1.5rem;
}

.stat-card {
    background: var(--background);
    border-radius: 10px;
    padding: 1rem;
    text-align: center;
}

.stat-card .stat-value {
    font-size: 1.75rem;
    font-weight: 800;
    color: var(--primary);
}

.stat-card .stat-label {
    font-size: 0.85rem;
    opacity: 0.75;
}

@media (max-width: 600px) {
    .main-content {
        padding: 1.25rem 0 2rem;
    }

    .card {
        padding: 1.25rem;
    }
}