:root {
    color-scheme: light dark;
    --color-bg: #12161c;
    --color-surface: #1b212b;
    --color-text: #e8ecf1;
    --color-muted: #8a94a3;
    --color-accent: #4fd1c5;
    --color-danger: #e05561;
}

* {
    box-sizing: border-box;
}

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

.app-header {
    display: flex;
    align-items: center;
    justify-content: space-between;
    padding: 0.75rem 1.5rem;
    background: var(--color-surface);
    border-bottom: 1px solid rgba(255, 255, 255, 0.08);
}

.app-header__brand {
    font-weight: 700;
    color: var(--color-accent);
    text-decoration: none;
    font-size: 1.1rem;
}

.app-header__nav a {
    color: var(--color-text);
    text-decoration: none;
    margin-left: 1.25rem;
    font-size: 0.9rem;
}

.app-header__nav a:hover {
    color: var(--color-accent);
}

.app-main {
    max-width: 960px;
    margin: 0 auto;
    padding: 1.5rem;
}

.flash {
    padding: 0.75rem 1rem;
    border-radius: 6px;
    margin-bottom: 1rem;
    font-size: 0.9rem;
}

.flash--info {
    background: rgba(79, 209, 197, 0.15);
    color: var(--color-accent);
}

.flash--error {
    background: rgba(224, 85, 97, 0.15);
    color: var(--color-danger);
}

.btn {
    display: inline-block;
    padding: 0.6rem 1.1rem;
    border: none;
    border-radius: 6px;
    background: var(--color-accent);
    color: #0b1210;
    font-weight: 600;
    text-decoration: none;
    cursor: pointer;
    font-size: 0.95rem;
}

.btn--secondary {
    background: var(--color-surface);
    color: var(--color-text);
    border: 1px solid rgba(255, 255, 255, 0.15);
}

.case-grid {
    display: grid;
    grid-template-columns: repeat(auto-fill, minmax(220px, 1fr));
    gap: 1rem;
    margin-top: 1rem;
}

.case-card {
    display: block;
    padding: 1rem;
    background: var(--color-surface);
    border-radius: 8px;
    text-decoration: none;
    color: var(--color-text);
    border: 1px solid rgba(255, 255, 255, 0.08);
}

.case-card h2 {
    margin: 0 0 0.5rem;
    font-size: 1.05rem;
}

.case-card__score {
    font-size: 0.85rem;
    color: var(--color-accent);
    margin: 0.5rem 0 0;
}

.case-card__score--muted {
    color: var(--color-muted);
}

.patient-card {
    background: var(--color-surface);
    border-radius: 8px;
    padding: 1rem;
    margin-bottom: 1.5rem;
    border: 1px solid rgba(255, 255, 255, 0.08);
}

.exam-actions__buttons {
    display: flex;
    flex-wrap: wrap;
    gap: 0.5rem;
    margin-bottom: 1rem;
}

.exam-results {
    list-style: none;
    padding: 0;
    display: flex;
    flex-direction: column;
    gap: 0.5rem;
}

.exam-results li {
    background: var(--color-surface);
    border-radius: 6px;
    padding: 0.6rem 0.8rem;
    font-size: 0.9rem;
}

.diagnosis-option {
    display: block;
    margin-bottom: 0.5rem;
}

.highscore-section {
    margin-bottom: 2rem;
}

.highscore-list {
    list-style: decimal;
    padding-left: 1.5rem;
    display: flex;
    flex-direction: column;
    gap: 0.4rem;
}

.highscore-list li {
    display: flex;
    gap: 1rem;
    background: var(--color-surface);
    border-radius: 6px;
    padding: 0.5rem 0.8rem;
}

.highscore-list__name {
    flex: 1;
    font-weight: 600;
}

.highscore-list__score {
    color: var(--color-accent);
}

.highscore-list__time {
    color: var(--color-muted);
}