:root {
    --bg: #0a0e17;
    --card-bg: #121826;
    --border: #1f2a3d;
    --accent: #3ec6e0;
    --accent-ink: #05131a;
    --text: #e5e7eb;
    --text-muted: #8b95a7;
}

body {
    background-color: var(--bg);
    color: var(--text);
    font-family: 'Poppins', -apple-system, BlinkMacSystemFont, 'Segoe UI', sans-serif;
}

h1, h2, h3, .card-title {
    color: #ffffff;
    font-weight: 700;
}

.text-muted {
    color: var(--text-muted) !important;
}

.quiz-navbar {
    background-color: #0d131f;
    border-bottom: 1px solid var(--border);
    padding: 1rem 1.5rem;
}

.quiz-navbar-inner {
    max-width: 640px;
    margin: 0 auto;
    display: flex;
    align-items: center;
    gap: 0.75rem;
}

.quiz-logo {
    height: 32px;
    width: auto;
}

.quiz-brand {
    color: #ffffff;
    font-weight: 700;
    letter-spacing: 0.08em;
    font-size: 1.1rem;
}

.quiz-container {
    max-width: 640px;
    margin: 0 auto;
    padding: 3rem 1rem;
}

.quiz-footer {
    text-align: center;
    color: var(--text-muted);
    font-size: 0.85rem;
    padding: 1.5rem 1rem 2.5rem;
}

.quiz-kicker {
    color: var(--accent);
    text-transform: uppercase;
    letter-spacing: 0.1em;
    font-size: 0.75rem;
    font-weight: 600;
    margin-bottom: 0.35rem;
}

.title-accent {
    position: relative;
    padding-bottom: 0.6rem;
    margin-bottom: 1.25rem;
}

.title-accent::after {
    content: '';
    position: absolute;
    left: 0;
    bottom: 0;
    width: 48px;
    height: 3px;
    background-color: var(--accent);
    border-radius: 2px;
}

.card {
    background-color: var(--card-bg);
    border: 1px solid var(--border);
    border-radius: 0.9rem;
    box-shadow: 0 8px 24px rgba(0, 0, 0, 0.35);
    color: var(--text);
}

.btn-primary {
    background-color: var(--accent);
    border-color: var(--accent);
    color: var(--accent-ink);
    font-weight: 600;
    box-shadow: 0 0 16px rgba(62, 198, 224, 0.35);
}

.btn-primary:hover {
    background-color: #2fb0c9;
    border-color: #2fb0c9;
    color: var(--accent-ink);
    box-shadow: 0 0 24px rgba(62, 198, 224, 0.5);
}

.btn-outline-light {
    border-color: var(--accent);
    color: var(--accent);
}

.btn-outline-light:hover {
    background-color: var(--accent);
    color: var(--accent-ink);
}

.badge-timer {
    background-color: var(--accent);
    color: var(--accent-ink);
    font-weight: 600;
    padding: 0.5rem 0.85rem;
    border-radius: 999px;
}

.progress {
    background-color: var(--border);
    border-radius: 999px;
    overflow: hidden;
}

.progress-bar {
    background-color: var(--accent);
}

.alert {
    border-radius: 0.75rem;
    color: var(--text);
}

.alert-warning {
    background-color: rgba(62, 198, 224, 0.1);
    border-color: var(--accent);
}

.alert-info {
    background-color: rgba(62, 198, 224, 0.1);
    border-color: var(--accent);
}

.alert-danger {
    background-color: rgba(239, 68, 68, 0.1);
    border-color: #ef4444;
}

.alert-secondary {
    background-color: rgba(139, 149, 167, 0.1);
    border-color: var(--border);
}

.list-group-item {
    background-color: var(--card-bg);
    border-color: var(--border);
    color: var(--text);
    display: flex;
    align-items: flex-start;
    gap: 0.6rem;
    word-break: break-word;
}

.list-group-item:hover {
    background-color: #1a2233;
}

.list-group-item .form-check-input {
    margin-top: 0.25rem;
    flex-shrink: 0;
}

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

.table {
    color: var(--text);
}

.table > :not(caption) > * > * {
    background-color: transparent;
    border-bottom-color: var(--border);
    color: var(--text);
    word-break: break-word;
    overflow-wrap: anywhere;
}

.leaderboard-table {
    table-layout: fixed;
    width: 100%;
}

.leaderboard-table th:first-child,
.leaderboard-table td:first-child {
    width: 2.5rem;
}

.leaderboard-table th:last-child,
.leaderboard-table td:last-child {
    width: 5.5rem;
}

i.bi {
    color: var(--accent);
}

.bi-check-circle-fill {
    color: #22c55e !important;
}

@media (max-width: 576px) {
    .quiz-container {
        padding: 2rem 1rem;
    }

    .card-body {
        padding: 1.25rem;
    }

    .display-4 {
        font-size: 2.25rem;
    }

    .quiz-brand {
        font-size: 0.95rem;
    }

    .quiz-logo {
        height: 26px;
    }

    .btn {
        width: 100%;
    }

    .table {
        font-size: 0.85rem;
    }
}
.home-container {
    max-width: 960px;
    margin: 0 auto;
    padding: 3rem 1rem;
}

.hero-section {
    text-align: center;
    padding: 3rem 1rem 4rem;
    background: radial-gradient(circle at 50% 0%, rgba(62, 198, 224, 0.12), transparent 60%);
    border-radius: 1rem;
    margin-bottom: 3rem;
}

.hero-eyebrow {
    color: var(--accent);
    text-transform: uppercase;
    letter-spacing: 0.15em;
    font-size: 0.8rem;
    font-weight: 700;
    margin-bottom: 1rem;
}

.hero-title {
    font-size: 2.75rem;
    font-weight: 700;
    color: #ffffff;
    line-height: 1.2;
    margin-bottom: 1.25rem;
}

.hero-subtitle {
    color: var(--text-muted);
    font-size: 1.1rem;
    max-width: 640px;
    margin: 0 auto 2rem;
    line-height: 1.6;
}

.hero-actions {
    display: flex;
    justify-content: center;
    gap: 1rem;
    flex-wrap: wrap;
}

.section-heading {
    text-align: center;
    color: #ffffff;
    font-weight: 700;
    margin-bottom: 2rem;
}

.feature-card {
    background-color: var(--card-bg);
    border: 1px solid var(--border);
    border-radius: 0.9rem;
    padding: 1.75rem 1.5rem;
    height: 100%;
}

.feature-card i {
    font-size: 1.75rem;
    color: var(--accent);
    margin-bottom: 0.75rem;
    display: inline-block;
}

.feature-card h3 {
    color: #ffffff;
    font-size: 1.05rem;
    margin-bottom: 0.5rem;
}

.feature-card p {
    color: var(--text-muted);
    font-size: 0.9rem;
    line-height: 1.5;
    margin: 0;
}

.step-item {
    text-align: center;
    padding: 1.5rem 1rem;
}

.step-number {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    width: 40px;
    height: 40px;
    border-radius: 50%;
    background-color: rgba(62, 198, 224, 0.12);
    color: var(--accent);
    font-weight: 700;
    margin-bottom: 0.75rem;
}

@media (max-width: 576px) {
    .home-container {
        padding: 2rem 1rem;
    }

    .hero-title {
        font-size: 2rem;
    }

    .hero-section {
        padding: 2rem 1rem 2.5rem;
    }
}