:root {
    --bg: #fafaf9;
    --card: #ffffff;
    --text: #1c1917;
    --muted: #78716c;
    --border: #e7e5e4;
    --accent: #0f766e;
    --accent-soft: #ccfbf1;
    --danger: #b91c1c;
}

* { box-sizing: border-box; }

body {
    margin: 0;
    font-family: -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto, sans-serif;
    background: var(--bg);
    color: var(--text);
    line-height: 1.5;
}

.topbar {
    display: flex;
    align-items: center;
    justify-content: space-between;
    padding: 0.75rem 1.5rem;
    background: var(--card);
    border-bottom: 1px solid var(--border);
}

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

nav a { margin-left: 1.25rem; color: var(--muted); text-decoration: none; }
nav a:hover { color: var(--text); }

main {
    max-width: 60rem;
    margin: 0 auto;
    padding: 1.5rem;
}

h1 { font-size: 1.5rem; margin: 0.5rem 0 1rem; }
h2 { font-size: 1rem; margin: 1.5rem 0 0.5rem; color: var(--muted); }

.card {
    background: var(--card);
    border: 1px solid var(--border);
    border-radius: 8px;
    padding: 1rem 1.25rem;
}

.narrow { max-width: 24rem; }

main:has(> .centered) {
    display: flex;
    align-items: center;
    justify-content: center;
    min-height: 100vh;
}

.centered { width: 24rem; }

label { display: block; margin: 0.75rem 0; }
input[type="text"], input[type="password"] {
    display: block;
    width: 100%;
    padding: 0.5rem;
    margin-top: 0.25rem;
    border: 1px solid var(--border);
    border-radius: 6px;
    font: inherit;
}

button {
    margin-top: 0.75rem;
    padding: 0.5rem 1.25rem;
    border: none;
    border-radius: 6px;
    background: var(--accent);
    color: #fff;
    font: inherit;
    cursor: pointer;
}

button.link { background: none; color: var(--accent); padding: 0; margin: 0; }
button.danger { color: var(--danger); }

form.inline { display: inline; }

.error { color: var(--danger); }
.notice { color: var(--accent); }

code {
    background: var(--accent-soft);
    border-radius: 4px;
    padding: 0.1rem 0.35rem;
    font-size: 0.85em;
    word-break: break-all;
}

table { width: 100%; border-collapse: collapse; }
td, th {
    padding: 0.4rem 0.5rem;
    border-bottom: 1px solid var(--border);
    text-align: left;
}
td.num { text-align: right; font-variant-numeric: tabular-nums; }

.site-picker, .range-picker { display: flex; gap: 0.75rem; flex-wrap: wrap; }
.site-picker a, .range-picker a {
    color: var(--muted);
    text-decoration: none;
    padding: 0.15rem 0.5rem;
    border-radius: 999px;
}
.site-picker a.active, .range-picker a.active {
    background: var(--accent-soft);
    color: var(--accent);
    font-weight: 600;
}

.stats { display: flex; gap: 1rem; flex-wrap: wrap; }
.stat { flex: 1; min-width: 9rem; text-align: center; }
.stat strong { display: block; font-size: 2rem; }
.stat span { color: var(--muted); }

.chart {
    display: flex;
    align-items: flex-end;
    gap: 3px;
    height: 10rem;
    background: var(--card);
    border: 1px solid var(--border);
    border-radius: 8px;
    padding: 1rem 1rem 0.25rem;
}

.bar-col { flex: 1; display: flex; flex-direction: column; justify-content: flex-end; height: 100%; }
.bar { background: var(--accent); border-radius: 2px 2px 0 0; min-height: 1px; }
.bar-label { text-align: center; font-size: 0.6rem; color: var(--muted); }

.grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(16rem, 1fr));
    gap: 0 2rem;
}