:root {
    --bg: #f4f7f8;
    --card: #ffffff;
    --text: #1f2a37;
    --muted: #5b6b7f;
    --primary: #ea580c;
    --primary-dark: #c2410c;
    --accent: #fb923c;
    --border: #dce3ea;
}

* {
    box-sizing: border-box;
}

body {
    margin: 0;
    font-family: "Segoe UI", "Tahoma", sans-serif;
    background: var(--bg);
    color: var(--text);
    min-height: 100vh;
}

.page-bg {
    position: fixed;
    inset: 0;
    z-index: -1;
    background:
        radial-gradient(circle at 10% 10%, rgba(234, 88, 12, 0.18), transparent 35%),
        radial-gradient(circle at 90% 30%, rgba(251, 146, 60, 0.22), transparent 40%),
        linear-gradient(120deg, #f5f9fb 0%, #edf4f7 100%);
}

.container {
    width: min(1100px, 92%);
    margin: 0 auto;
}

.topbar {
    background: rgba(255, 255, 255, 0.85);
    backdrop-filter: blur(8px);
    border-bottom: 1px solid var(--border);
    position: sticky;
    top: 0;
    z-index: 10;
}

.topbar-inner {
    display: flex;
    align-items: center;
    justify-content: space-between;
    gap: 1rem;
    padding: 0.8rem 0;
}

.topbar h1 {
    font-size: 1.25rem;
    margin: 0;
}

.topbar h1 a {
    color: var(--text);
    text-decoration: none;
}

nav {
    display: flex;
    gap: 0.8rem;
    flex-wrap: wrap;
}

nav a {
    text-decoration: none;
    color: var(--text);
    padding: 0.35rem 0.65rem;
    border-radius: 8px;
}

nav a:hover {
    background: #e9f1f3;
}

.main-content {
    padding: 1.25rem 0 2rem;
}

.card {
    background: var(--card);
    border: 1px solid var(--border);
    border-radius: 16px;
    padding: 1.2rem;
    box-shadow: 0 8px 20px rgba(0, 0, 0, 0.04);
    margin-bottom: 1rem;
}

.auth-card {
    max-width: 520px;
    margin: 2rem auto;
}

.hero {
    background: linear-gradient(130deg, #ffffff 0%, #f3fbfa 100%);
}

.grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(250px, 1fr));
    gap: 1rem;
}

.quiz-card .meta,
.muted {
    color: var(--muted);
}

.score {
    color: var(--primary-dark);
    font-weight: 600;
}

.btn {
    display: inline-block;
    padding: 0.65rem 1rem;
    border-radius: 10px;
    border: 0;
    background: var(--primary);
    color: #fff;
    text-decoration: none;
    cursor: pointer;
    font-weight: 600;
}

.btn:hover {
    background: var(--primary-dark);
}

.btn.secondary {
    background: #334155;
}

.btn.tiny {
    padding: 0.45rem 0.65rem;
    font-size: 0.84rem;
}

.btn.danger {
    background: #b91c1c;
}

.btn.danger:hover {
    background: #991b1b;
}

.btn.alt {
    background: var(--accent);
    color: #1f2937;
}

.inline-actions {
    display: flex;
    gap: 0.6rem;
    flex-wrap: wrap;
}

.form-grid p {
    margin: 0 0 0.85rem;
}

.input-field {
    width: 100%;
    margin-top: 0.4rem;
    padding: 0.6rem 0.75rem;
    border: 1px solid var(--border);
    border-radius: 10px;
}

.question-box {
    border: 1px solid var(--border);
    border-radius: 12px;
    padding: 1rem;
    margin-bottom: 0.9rem;
}

.option-item {
    display: flex;
    gap: 0.55rem;
    padding: 0.35rem 0;
}

.result-card {
    text-align: center;
}

.score-big {
    font-size: 2rem;
    margin: 0.5rem 0;
    color: var(--primary-dark);
}

.rank {
    font-size: 1.05rem;
}

.leaderboard {
    display: grid;
    gap: 0.55rem;
}

.leader-row {
    display: grid;
    grid-template-columns: 80px 1fr 130px;
    padding: 0.6rem;
    border: 1px solid var(--border);
    border-radius: 10px;
    align-items: center;
}

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

.quiz-builder-card {
    max-width: 980px;
    margin: 0 auto;
}

.builder-list {
    display: grid;
    gap: 1rem;
}

.builder-question {
    border: 1px solid var(--border);
    border-radius: 14px;
    padding: 1rem;
    background: linear-gradient(180deg, #ffffff 0%, #f8fcfc 100%);
}

.builder-question h3 {
    margin: 0 0 0.8rem;
}

.builder-options {
    display: grid;
    grid-template-columns: repeat(2, minmax(0, 1fr));
    gap: 0.8rem;
}

.builder-option {
    border: 1px dashed #bdd1d6;
    border-radius: 12px;
    padding: 0.7rem;
    display: grid;
    gap: 0.5rem;
}

.builder-option > span:first-child {
    font-weight: 600;
    color: #334155;
}

.correct-pick {
    display: inline-flex;
    gap: 0.35rem;
    align-items: center;
    color: #c2410c;
    font-size: 0.92rem;
}

.table {
    width: 100%;
    border-collapse: collapse;
}

.table th,
.table td {
    text-align: left;
    padding: 0.7rem 0.6rem;
    border-bottom: 1px solid var(--border);
    vertical-align: top;
}

.table th {
    color: #334155;
    font-size: 0.92rem;
}

.actions {
    display: flex;
    gap: 0.4rem;
    flex-wrap: wrap;
}

.message-wrap {
    display: grid;
    gap: 0.6rem;
    margin-bottom: 1rem;
}

.message {
    padding: 0.7rem 0.9rem;
    border-radius: 10px;
    font-weight: 500;
}

.message.success {
    background: #dcfce7;
    color: #14532d;
}

.message.error {
    background: #fee2e2;
    color: #7f1d1d;
}

.message.warning {
    background: #fef3c7;
    color: #7c2d12;
}

.message.info {
    background: #dbeafe;
    color: #1e3a8a;
}

.form-foot {
    margin-top: 0.9rem;
}

@media (max-width: 700px) {
    .topbar-inner {
        flex-direction: column;
        align-items: flex-start;
    }

    .leader-row {
        grid-template-columns: 1fr;
        gap: 0.2rem;
    }

    .builder-options {
        grid-template-columns: 1fr;
    }
}