:root {
    --bg: #fff5f5;
    --bg-soft: #ffffff;
    --text: #3a0d0d;
    --muted: #7f1d1d;
    --primary: #c1121f;
    --secondary: #7f1d1d;
    --correct: #16a34a;
    --wrong: #b91c1c;
}

* { box-sizing: border-box; }

body {
    margin: 0;
    font-family: Inter, system-ui, -apple-system, Segoe UI, Roboto, Arial, sans-serif;
    color: var(--text);
    background: linear-gradient(145deg, #fff7f7, #ffe4e6);
    min-height: 100vh;
}

a { color: var(--primary); text-decoration: none; }

a:hover { text-decoration: underline; }

.container {
    width: min(100%, 960px);
    margin: 0 auto;
    padding: 1.25rem;
}

.center-layout {
    min-height: 100vh;
    display: grid;
    place-items: center;
}

.card {
    background: rgba(255, 255, 255, 0.96);
    border: 1px solid rgba(185, 28, 28, 0.16);
    border-radius: 16px;
    padding: 1rem;
    box-shadow: 0 10px 30px rgba(0, 0, 0, 0.25);
}

.glass { backdrop-filter: blur(8px); }
.narrow { width: min(100%, 520px); }

h1, h2, h3 { margin-top: 0; }
.subtitle { color: var(--muted); margin-bottom: 1rem; }

.form { display: grid; gap: 0.75rem; }

input[type="text"],
input[type="password"] {
    width: 100%;
    padding: 0.7rem 0.8rem;
    border-radius: 10px;
    border: 1px solid #fecaca;
    background: #fff;
    color: var(--text);
}

.btn {
    display: inline-flex;
    justify-content: center;
    align-items: center;
    padding: 0.65rem 1rem;
    border-radius: 10px;
    border: none;
    cursor: pointer;
    font-weight: 600;
}

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

.btn-secondary {
    background: var(--secondary);
    color: #fff;
}

.btn-danger {
    background: #991b1b;
    color: #fff;
}

.topbar {
    display: flex;
    justify-content: space-between;
    align-items: center;
    gap: 0.75rem;
    margin-bottom: 1rem;
}

.quiz-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(220px, 1fr));
    gap: 0.9rem;
}

.meta {
    color: #991b1b;
    font-size: 0.92rem;
}

.option {
    display: flex;
    gap: 0.65rem;
    align-items: flex-start;
    border: 1px solid #fecaca;
    border-radius: 12px;
    padding: 0.7rem;
    background: #fff7f7;
}

.option:hover { border-color: var(--primary); }

.alert {
    padding: 0.7rem;
    border-radius: 8px;
}

.error {
    background: rgba(239, 68, 68, 0.16);
    border: 1px solid rgba(220, 38, 38, 0.45);
}

.success {
    background: rgba(22, 163, 74, 0.16);
    border: 1px solid rgba(22, 163, 74, 0.45);
}

.info {
    background: rgba(239, 68, 68, 0.12);
    border: 1px solid rgba(239, 68, 68, 0.35);
}

.progress-wrap { margin-bottom: 1rem; }

.progress-bar {
    height: 8px;
    border-radius: 20px;
    background: #fecaca;
    overflow: hidden;
    margin-top: 0.35rem;
}

.progress-bar > div {
    height: 100%;
    background: linear-gradient(90deg, #dc2626, #ef4444);
}

.result-list { display: grid; gap: 0.8rem; }

.result-item {
    border-radius: 12px;
    padding: 0.75rem;
    border: 1px solid;
}

.result-item.correct {
    border-color: rgba(22, 163, 74, 0.7);
    background: rgba(22, 163, 74, 0.15);
}

.result-item.wrong {
    border-color: rgba(220, 38, 38, 0.7);
    background: rgba(220, 38, 38, 0.12);
}

.table-wrap { overflow-x: auto; }

table {
    width: 100%;
    border-collapse: collapse;
    min-width: 580px;
}

th, td {
    border-bottom: 1px solid #fecaca;
    padding: 0.6rem;
    text-align: left;
}

.actions {
    margin-top: 1rem;
    display: flex;
    flex-wrap: wrap;
    gap: 0.75rem;
}

.admin-grid {
    display: grid;
    grid-template-columns: repeat(2, minmax(0, 1fr));
    gap: 0.9rem;
}

.admin-block {
    margin-bottom: 1rem;
}

.admin-answer-item {
    border-top: 1px solid #fecaca;
    padding-top: 0.65rem;
    margin-top: 0.65rem;
}

@media (max-width: 640px) {
    .container { padding: 0.85rem; }
    .card { padding: 0.85rem; }
    .topbar { flex-direction: column; align-items: flex-start; }
    .admin-grid { grid-template-columns: 1fr; }
    .btn { width: 100%; }
}