:root {
    --bg: #1a1a2e;
    --surface: #16213e;
    --text: #eaeaea;
    --muted: #94a3b8;
    --up: #22c55e;
    --down: #ef4444;
    --pending: #eab308;
    --accent: #3b82f6;
}

* {
    box-sizing: border-box;
}

body {
    font-family: system-ui, -apple-system, sans-serif;
    background: var(--bg);
    color: var(--text);
    margin: 0;
    padding: 1rem 2rem;
    line-height: 1.5;
    display: flex;
    flex-direction: column;
    align-items: center;
}

header {
    display: flex;
    align-items: center;
    justify-content: center;
    gap: 1rem;
    margin-bottom: 1.5rem;
    border-bottom: 1px solid var(--surface);
    padding-bottom: 0.5rem;
    width: 100%;
    max-width: 900px;
}

header h1 {
    margin: 0;
    font-size: 1.5rem;
}

header h1 a {
    color: var(--text);
    text-decoration: none;
}

header h1 a:hover {
    color: var(--accent);
}

.version {
    color: var(--muted);
    font-size: 0.875rem;
}

main {
    max-width: 900px;
    width: 100%;
}

h2 {
    margin-top: 0;
    font-size: 1.25rem;
}

.add-form {
    display: flex;
    flex-wrap: wrap;
    gap: 0.5rem;
    margin-bottom: 1.5rem;
    padding: 1rem;
    background: var(--surface);
    border-radius: 6px;
}

.add-form input,
.add-form select {
    padding: 0.5rem 0.75rem;
    border: 1px solid var(--muted);
    border-radius: 4px;
    background: var(--bg);
    color: var(--text);
}

.add-form input[type="text"] {
    min-width: 140px;
}

.add-form input[type="number"] {
    width: 80px;
}

.add-form button {
    padding: 0.5rem 1rem;
    background: var(--accent);
    color: white;
    border: none;
    border-radius: 4px;
    cursor: pointer;
}

.add-form button:hover {
    opacity: 0.9;
}

.date-range-form {
    display: flex;
    flex-wrap: wrap;
    align-items: center;
    gap: 0.5rem;
    margin-bottom: 1rem;
    padding: 0.75rem;
    background: var(--surface);
    border-radius: 6px;
}

.date-range-form label {
    font-size: 0.875rem;
    color: var(--muted);
}

.date-range-form input {
    padding: 0.4rem 0.6rem;
    border: 1px solid var(--muted);
    border-radius: 4px;
    background: var(--bg);
    color: var(--text);
}

.date-range-form button {
    padding: 0.4rem 0.75rem;
    background: var(--accent);
    color: white;
    border: none;
    border-radius: 4px;
    cursor: pointer;
}

.date-range-form a {
    margin-left: 0.5rem;
}

.period-section {
    margin-bottom: 1.5rem;
}

.period-section h3 {
    margin: 0 0 0.5rem 0;
    font-size: 1rem;
}

.preset-buttons {
    display: flex;
    flex-wrap: wrap;
    gap: 0.5rem;
    margin-bottom: 0.75rem;
}

.preset-btn {
    display: inline-block;
    padding: 0.4rem 0.75rem;
    background: var(--surface);
    color: var(--text);
    border: 1px solid var(--muted);
    border-radius: 4px;
    text-decoration: none;
    font-size: 0.875rem;
}

.preset-btn:hover {
    border-color: var(--accent);
    color: var(--accent);
}

.preset-btn.preset-active {
    background: var(--accent);
    border-color: var(--accent);
    color: white;
}

.period-label {
    margin: 0 0 0.5rem 0;
    font-size: 0.875rem;
    color: var(--muted);
}

.chart-container {
    background: var(--surface);
    border-radius: 6px;
    padding: 1rem;
    margin-bottom: 1.5rem;
}

.chart-container h3 {
    margin: 0 0 1rem 0;
    font-size: 1rem;
}

.chart-wrapper {
    height: 200px;
    position: relative;
    overflow: hidden;
}

#response-chart {
    max-height: 200px;
}

.chart-empty {
    color: var(--muted);
    text-align: center;
    padding: 2rem;
    margin: 0;
}

.checks-filter-form {
    display: flex;
    flex-wrap: wrap;
    align-items: center;
    gap: 0.5rem;
    margin-bottom: 1rem;
}

.checks-filter-form select,
.checks-filter-form input[type="text"] {
    padding: 0.4rem 0.6rem;
    border: 1px solid var(--muted);
    border-radius: 4px;
    background: var(--bg);
    color: var(--text);
}

.checks-filter-form input[type="text"] {
    min-width: 180px;
}

.checks-filter-form button {
    padding: 0.4rem 0.75rem;
    background: var(--accent);
    color: white;
    border: none;
    border-radius: 4px;
    cursor: pointer;
}

.error-cell {
    font-size: 0.875rem;
    color: var(--muted);
    max-width: 300px;
    overflow: hidden;
    text-overflow: ellipsis;
}

.btn-delete {
    padding: 0.25rem 0.5rem;
    font-size: 0.8rem;
    background: transparent;
    color: var(--muted);
    border: 1px solid var(--muted);
    border-radius: 4px;
    cursor: pointer;
}

.btn-delete:hover {
    color: var(--down);
    border-color: var(--down);
}

.services-table,
.checks-table {
    width: 100%;
    border-collapse: collapse;
    background: var(--surface);
    border-radius: 6px;
    overflow: hidden;
}

.services-table th,
.services-table td,
.checks-table th,
.checks-table td {
    padding: 0.75rem 1rem;
    text-align: left;
    border-bottom: 1px solid var(--bg);
}

.services-table th,
.checks-table th {
    background: rgba(0, 0, 0, 0.2);
    font-weight: 600;
}

.services-table tbody tr:hover,
.checks-table tbody tr:hover {
    background: rgba(255, 255, 255, 0.03);
}

code {
    font-size: 0.9em;
    background: rgba(0, 0, 0, 0.3);
    padding: 0.2em 0.4em;
    border-radius: 4px;
}

.badge {
    display: inline-block;
    padding: 0.2em 0.5em;
    border-radius: 4px;
    font-size: 0.8rem;
    font-weight: 500;
}

.badge-up {
    background: rgba(34, 197, 94, 0.2);
    color: var(--up);
}

.badge-down {
    background: rgba(239, 68, 68, 0.2);
    color: var(--down);
}

.badge-pending {
    background: rgba(234, 179, 8, 0.2);
    color: var(--pending);
}

a {
    color: var(--accent);
    text-decoration: none;
}

a:hover {
    text-decoration: underline;
}

.stats-grid {
    display: grid;
    grid-template-columns: repeat(auto-fill, minmax(120px, 1fr));
    gap: 1rem;
    margin-bottom: 1.5rem;
}

.stat-card {
    background: var(--surface);
    padding: 1rem;
    border-radius: 6px;
    text-align: center;
    min-width: 0;
    overflow: hidden;
}

.stat-label {
    display: block;
    font-size: 0.75rem;
    color: var(--muted);
    text-transform: uppercase;
    letter-spacing: 0.05em;
}

.stat-value {
    font-size: 1.25rem;
    font-weight: 600;
    overflow: hidden;
    text-overflow: ellipsis;
}