:root {
    color-scheme: dark;
    --bg: #0f1220;
    --card: #1a1f34;
    --text: #f4f7ff;
    --muted: #a9b3ce;
    --accent: #7cd0ff;
    --accent-2: #8fffbe;
    --danger: #ff8f8f;
    --border: #2d3557;
}

* {
    box-sizing: border-box;
}

body {
    margin: 0;
    font-family: Inter, -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto, sans-serif;
    background: radial-gradient(circle at top, #1a1f34 0%, var(--bg) 55%);
    color: var(--text);
    min-height: 100vh;
}

.container {
    max-width: 820px;
    margin: 0 auto;
    padding: 24px 16px 48px;
    display: grid;
    gap: 16px;
}

.hero h1 {
    margin: 0;
    font-size: 2rem;
}

.hero p {
    margin: 8px 0 0;
    color: var(--muted);
}

.card {
    background: linear-gradient(180deg, #1b2138 0%, var(--card) 100%);
    border: 1px solid var(--border);
    border-radius: 12px;
    padding: 16px;
}

.card h2 {
    margin-top: 0;
    font-size: 1.2rem;
}

.card.small p {
    margin: 8px 0;
    color: var(--muted);
}

.grid-form {
    display: grid;
    gap: 12px;
}

label {
    display: grid;
    gap: 6px;
    font-size: 0.95rem;
    color: var(--muted);
}

input,
select,
button {
    border-radius: 10px;
    border: 1px solid var(--border);
    font-size: 1rem;
    padding: 10px 12px;
}

input,
select {
    background: #0f1324;
    color: var(--text);
}

button {
    cursor: pointer;
    background: linear-gradient(135deg, var(--accent), var(--accent-2));
    color: #091321;
    border: none;
    font-weight: 700;
}

button:hover {
    filter: brightness(1.05);
}

.result {
    margin-top: 14px;
    background: #10152a;
    border: 1px solid var(--border);
    border-radius: 10px;
    padding: 12px;
    min-height: 62px;
}

.result p {
    margin: 6px 0;
}

.result .ok {
    color: var(--accent-2);
    font-weight: 600;
}

.result .warn {
    color: #ffd38f;
    font-weight: 600;
}

.result .error {
    color: var(--danger);
    font-weight: 700;
}

ul.plates {
    list-style: none;
    margin: 10px 0 0;
    padding: 0;
    display: grid;
    gap: 6px;
}

ul.plates li {
    display: flex;
    justify-content: space-between;
    border-bottom: 1px dashed #2b3456;
    padding-bottom: 4px;
}