:root {
    --bg: #f0f3f8;
    --panel: #ffffff;
    --ink: #1f2a37;
    --muted: #5a6a7d;
    --line: #d9e2ec;
    --accent: #0d6e6e;
    --accent-soft: #e2f2f2;
}

* {
    box-sizing: border-box;
}

body {
    margin: 0;
    background: radial-gradient(circle at 20% 0%, #fafcff 0%, #edf2fb 45%, #e5ebf5 100%);
    color: var(--ink);
    font-family: "Segoe UI", Tahoma, sans-serif;
}

.layout {
    max-width: 1200px;
    margin: 0 auto;
    padding: 24px;
    display: grid;
    gap: 18px;
}

.header h1 {
    margin: 0 0 8px;
}

.header p {
    margin: 0;
    color: var(--muted);
}

.panel {
    background: var(--panel);
    border: 1px solid var(--line);
    border-radius: 12px;
    padding: 14px;
    box-shadow: 0 8px 20px rgba(21, 40, 70, 0.06);
}

.nav {
    display: flex;
    gap: 12px;
    flex-wrap: wrap;
}

.nav a {
    text-decoration: none;
    color: var(--accent);
    font-weight: 600;
}

.filters {
    display: grid;
    grid-template-columns: repeat(4, minmax(0, 1fr));
    gap: 12px;
    align-items: end;
}

.single-row {
    grid-template-columns: 1fr auto;
}

label {
    display: grid;
    gap: 6px;
    font-size: 14px;
}

input, select, button, textarea {
    border: 1px solid var(--line);
    border-radius: 8px;
    padding: 10px;
    font-size: 14px;
}

button {
    cursor: pointer;
    background: var(--accent);
    color: white;
    border-color: var(--accent);
}

.grid {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 18px;
}

.game-list {
    margin: 0;
    padding: 0;
    list-style: none;
    display: grid;
    gap: 8px;
    max-height: 520px;
    overflow: auto;
}

.game-item button {
    width: 100%;
    text-align: left;
    background: var(--accent-soft);
    color: var(--ink);
    border: 1px solid #c5dddd;
    display: grid;
    gap: 3px;
}

.details.empty {
    color: var(--muted);
}

pre {
    background: #f5f8fc;
    border: 1px solid var(--line);
    border-radius: 8px;
    padding: 12px;
    overflow: auto;
}

.tables {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 12px;
}

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

th, td {
    border: 1px solid var(--line);
    padding: 8px;
    font-size: 13px;
}

th {
    background: #f5f8fc;
}

.form-grid {
    margin-top: 14px;
    display: grid;
    grid-template-columns: repeat(4, minmax(0, 1fr));
    gap: 10px;
    align-items: end;
}

.form-grid .full {
    grid-column: 1 / -1;
}

@media (max-width: 900px) {
    .filters {
        grid-template-columns: 1fr;
    }
    .grid {
        grid-template-columns: 1fr;
    }
    .tables {
        grid-template-columns: 1fr;
    }
    .form-grid {
        grid-template-columns: 1fr;
    }
}