:root {
    color-scheme: dark;
    font-family: Inter, "Segoe UI", Arial, sans-serif;

    --background: #0b1120;
    --surface: #151f30;
    --border: #263449;
    --text: #f1f5f9;
    --muted: #94a3b8;
    --subtle: #64748b;
    --accent: #60a5fa;
    --accent-light: #93c5fd;
}

* {
    box-sizing: border-box;
}

body {
    margin: 0;
    min-height: 100vh;
    background: var(--background);
    color: var(--text);
}

.container {
    width: min(100% - 48px, 760px);
    margin: 0 auto;
    padding: 110px 0 48px;
}

/* Nagłówek */

.header {
    margin-bottom: 64px;
}

.eyebrow {
    color: var(--accent);
    font-size: 12px;
    font-weight: 700;
    letter-spacing: 2px;
}

h1 {
    margin: 18px 0 12px;
    font-size: clamp(36px, 6vw, 56px);
    font-weight: 650;
    letter-spacing: -2px;
    line-height: 1.15;
}

.author {
    margin: 0;
    color: var(--muted);
    font-size: 16px;
    line-height: 1.6;
}

.separator {
    color: var(--subtle);
    padding: 0 4px;
}

/* Lista laboratoriów */

.labs {
    border-top: 1px solid var(--border);
}

.lab {
    display: flex;
    align-items: center;
    gap: 24px;
    padding: 24px 8px;
    border-bottom: 1px solid var(--border);
    color: var(--text);
    text-decoration: none;
    transition: background 0.2s, padding 0.2s;
}

.lab:hover {
    background: var(--surface);
    padding-left: 18px;
}

.lab-number {
    color: var(--subtle);
    font-size: 14px;
    font-variant-numeric: tabular-nums;
}

.lab-name {
    flex: 1;
    font-size: 17px;
    font-weight: 500;
}

.arrow {
    color: var(--accent-light);
    font-size: 22px;
    transition: transform 0.2s;
}

.lab:hover .arrow {
    transform: translate(3px, -3px);
}

.lab:focus-visible {
    outline: 2px solid var(--accent);
    outline-offset: -2px;
}

/* Stopka */

.footer {
    display: flex;
    justify-content: space-between;
    align-items: center;
    gap: 16px;
    flex-wrap: wrap;
    margin-top: 64px;
    color: var(--subtle);
    font-size: 12px;
}

/* Urządzenia mobilne */

@media (max-width: 600px) {
    .container {
        padding-top: 64px;
    }

    .header {
        margin-bottom: 44px;
    }

    .author {
        font-size: 14px;
    }

    .lab {
        gap: 16px;
        padding: 20px 4px;
    }

    .lab-name {
        font-size: 16px;
    }

    .footer {
        margin-top: 48px;
    }
}

/* Ograniczenie animacji */

@media (prefers-reduced-motion: reduce) {
    .lab,
    .arrow {
        transition: none;
    }
}