/* UPMonitor — plain CSS only (plan §3: no frameworks). */

:root {
    --bg: #f6f8fa;
    --panel: #ffffff;
    --ink: #1f2328;
    --muted: #59636e;
    --line: #d8dee4;
    --accent: #0b5cad;
    --up: #1a7f37;
    --down: #cf222e;
    --error: #bf8700;
    --radius: 10px;
}

* { box-sizing: border-box; }

body {
    margin: 0;
    font-family: -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto, Helvetica, Arial, sans-serif;
    background: var(--bg);
    color: var(--ink);
    line-height: 1.45;
}

/* ── Top bar ─────────────────────────────────────────────── */
.topbar {
    display: flex;
    align-items: center;
    justify-content: space-between;
    gap: 12px;
    padding: 10px 18px;
    background: var(--panel);
    border-bottom: 1px solid var(--line);
    position: sticky;
    top: 0;
    z-index: 5;
}

.brand { display: flex; align-items: center; gap: 10px; font-size: 16px; }
.brand small { color: var(--muted); font-weight: 400; }

.topbar-actions { display: flex; align-items: center; gap: 10px; flex-wrap: wrap; }
.clock { color: var(--muted); font-variant-numeric: tabular-nums; min-width: 86px; text-align: right; }

button {
    font: inherit;
    padding: 7px 12px;
    border-radius: 8px;
    border: 1px solid var(--line);
    background: #fff;
    cursor: pointer;
}
button:hover { border-color: var(--accent); color: var(--accent); }
button.danger { color: var(--down); }
button.danger:hover { border-color: var(--down); }

main { max-width: 1080px; margin: 24px auto 60px; padding: 0 18px; display: grid; gap: 30px; }
h1, h2 { margin: 0 0 12px; font-size: 20px; }

/* ── Status dots ─────────────────────────────────────────── */
.dot { width: 11px; height: 11px; border-radius: 50%; display: inline-block; flex: none; }
.dot.up { background: var(--up); box-shadow: 0 0 0 3px rgba(26, 127, 55, .18); }
.dot.down { background: var(--down); box-shadow: 0 0 0 3px rgba(207, 34, 46, .18); }
.dot.error { background: var(--error); }

/* ── Endpoint cards ──────────────────────────────────────── */
.grid { display: grid; gap: 12px; grid-template-columns: repeat(auto-fill, minmax(250px, 1fr)); }

.card {
    background: var(--panel);
    border: 1px solid var(--line);
    border-radius: var(--radius);
    padding: 14px 16px;
    display: grid;
    gap: 8px;
    cursor: pointer;
}
.card:hover { border-color: var(--accent); }
.card .card-top { display: flex; align-items: center; gap: 9px; font-weight: 600; }
.card .url { color: var(--muted); font-size: 12.5px; overflow: hidden; text-overflow: ellipsis; white-space: nowrap; }
.card .card-meta { display: flex; justify-content: space-between; color: var(--muted); font-size: 13px; }
.badge { font-size: 11.5px; padding: 2px 8px; border-radius: 999px; border: 1px solid var(--line); }
.badge.up { color: var(--up); border-color: rgba(26,127,55,.4); background: rgba(26,127,55,.08); }
.badge.down { color: var(--down); border-color: rgba(207,34,46,.4); background: rgba(207,34,46,.08); }
.badge.error { color: var(--error); border-color: rgba(191,135,0,.4); background: rgba(191,135,0,.08); }

/* ── Detail / chart ──────────────────────────────────────── */
#detail .row { display: flex; gap: 20px; align-items: center; justify-content: space-between; flex-wrap: wrap; }
.actions { display: grid; gap: 8px; }
#chart svg { max-width: 100%; height: auto; display: block; }
.empty-note { color: var(--muted); font-size: 14px; padding: 26px 0; text-align: center; }

/* ── Lists & metrics ─────────────────────────────────────── */
#incident-list { list-style: none; margin: 0; padding: 0; display: grid; gap: 8px; }
#incident-list li {
    background: var(--panel); border: 1px solid var(--line); border-radius: 8px; padding: 10px 14px; font-size: 14px;
}
.metrics { display: grid; gap: 6px; margin: 0; }
.metrics > div { background: var(--panel); border: 1px solid var(--line); border-radius: 8px; padding: 9px 13px; display: flex; justify-content: space-between; gap: 14px; }
.metrics dt { color: var(--muted); min-width: 130px; }
.metrics dd { margin: 0; font-family: ui-monospace, SFMono-Regular, Menlo, monospace; font-size: 12.5px; overflow-wrap: anywhere; text-align: right; }

/* ── Forms & dialogs ─────────────────────────────────────── */
.inline-form { display: grid; gap: 8px; max-width: 460px; }
label { display: grid; gap: 5px; font-size: 13.5px; color: var(--ink); margin-bottom: 4px; }
input, select {
    font: inherit; padding: 8px 10px; border: 1px solid var(--line); border-radius: 8px; background: #fff; width: 100%;
}
input:focus, select:focus { outline: 2px solid rgba(11, 92, 173, .35); border-color: var(--accent); }

dialog {
    border: none; border-radius: 14px; padding: 22px 24px; width: min(560px, calc(100vw - 32px));
    box-shadow: 0 18px 50px rgba(27, 31, 36, .28); background: #fff; color: var(--ink);
}
dialog::backdrop { background: rgba(24, 28, 33, .5); }
dialog h3 { margin: 0 0 14px; font-size: 17px; }
.row { display: flex; gap: 12px; flex-wrap: wrap; }
.row > label { flex: 1 1 140px; width: auto; margin-bottom: 8px; }

menu { list-style: none; padding: 0; margin: 16px 0 0; display: flex; justify-content: flex-end; gap: 10px; }
.hint { color: var(--muted); font-size: 12.5px; margin: 6px 0 0; }
.form-error { min-height: 18px; color: var(--down); font-weight: 600; }

#token-gate {
    background: var(--panel); border: 1px solid var(--line); border-radius: var(--radius); padding: 26px 28px; max-width: 560px;
}
#summary { color: var(--muted); font-size: 13.5px; }

.foot { text-align: center; color: var(--muted); font-size: 12.5px; padding: 18px; border-top: 1px solid var(--line); background: var(--panel); }

@media (max-width: 640px) {
    .topbar { flex-direction: column; align-items: stretch; }
    .topbar-actions { justify-content: space-between; }
}