:root {
  --bg: #0b0f14;
  --bg-soft: #0f141b;
  --panel: #121822;
  --panel-2: #182131;
  --border: #1e2a3a;
  --text: #e7ecf3;
  --muted: #8a97a8;
  --accent: #7aa2ff;
  --accent-soft: #1a2742;
  --good: #5bd6a1;
  --warn: #f6b05c;
  --bad: #ff7a7a;
  --mono: ui-monospace, SFMono-Regular, Menlo, Consolas, "Liberation Mono", monospace;
  --radius: 10px;
}

* { box-sizing: border-box; }
html, body { margin: 0; padding: 0; background: var(--bg); color: var(--text); }
body {
  font: 14px/1.5 -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto, Ubuntu, "Helvetica Neue", Arial, sans-serif;
  min-height: 100vh;
}

code { font-family: var(--mono); font-size: 0.92em; color: #cdd8ea; background: rgba(122, 162, 255, 0.08); padding: 1px 5px; border-radius: 4px; }
a { color: var(--accent); text-decoration: none; }
a:hover { text-decoration: underline; }

/* ───── topbar ───── */
.topbar {
  position: sticky; top: 0; z-index: 20;
  background: rgba(11, 15, 20, 0.85);
  backdrop-filter: blur(10px);
  border-bottom: 1px solid var(--border);
  padding: 14px 24px;
  display: flex; align-items: center; justify-content: space-between; gap: 24px;
  flex-wrap: wrap;
}
.brand { display: flex; align-items: center; gap: 14px; }
.logo {
  width: 40px; height: 40px; border-radius: 10px;
  display: grid; place-items: center;
  background: linear-gradient(135deg, #7aa2ff, #5bd6a1);
  color: #0b0f14; font-weight: 800; letter-spacing: .5px;
}
.brand h1 { margin: 0; font-size: 17px; font-weight: 600; }
.tag { margin: 0; color: var(--muted); font-size: 12px; }
.nav { display: flex; gap: 4px; flex-wrap: wrap; }
.nav a {
  padding: 7px 12px; border-radius: 7px; color: var(--muted); font-size: 13px;
}
.nav a:hover { color: var(--text); background: var(--panel); text-decoration: none; }

/* ───── layout ───── */
main { max-width: 1200px; margin: 0 auto; padding: 28px 24px 80px; display: grid; gap: 24px; }
.card {
  background: var(--panel);
  border: 1px solid var(--border);
  border-radius: var(--radius);
  padding: 22px;
}
.card-head { margin-bottom: 18px; }
.card-head h2 { margin: 0 0 4px; font-size: 18px; font-weight: 600; }
.card-head p { margin: 0; color: var(--muted); font-size: 13px; }

.footer {
  text-align: center; color: var(--muted); padding: 30px 20px 60px; font-size: 12px;
}

/* ───── forms ───── */
.form-row { display: flex; flex-wrap: wrap; gap: 12px; align-items: end; margin-bottom: 14px; }
.form-row label { display: flex; flex-direction: column; gap: 6px; flex: 0 0 auto; }
.form-row label.grow { flex: 1 1 260px; }
.form-row span { font-size: 11px; text-transform: uppercase; letter-spacing: .7px; color: var(--muted); font-weight: 600; }
input, select, button {
  background: var(--bg-soft);
  border: 1px solid var(--border);
  color: var(--text);
  padding: 9px 11px;
  border-radius: 7px;
  font: inherit;
  outline: none;
}
input:focus, select:focus { border-color: var(--accent); box-shadow: 0 0 0 3px rgba(122, 162, 255, 0.15); }
button { cursor: pointer; transition: background .15s; }
button.primary { background: var(--accent); color: #0b0f14; border-color: var(--accent); font-weight: 600; }
button.primary:hover { filter: brightness(1.1); }
button.ghost { background: transparent; color: var(--muted); }
button.ghost:hover { color: var(--text); background: var(--panel-2); }

/* ───── now big ───── */
.now-big {
  display: grid; grid-template-columns: 1fr 1fr; gap: 18px; margin-bottom: 20px;
  background: linear-gradient(180deg, var(--panel-2), var(--panel));
  border: 1px solid var(--border); border-radius: var(--radius); padding: 20px;
}
.big-label { font-size: 11px; text-transform: uppercase; letter-spacing: .8px; color: var(--muted); font-weight: 600; }
.big-date, .big-ts {
  font-family: var(--mono); font-size: 26px; font-weight: 600; color: var(--text);
  margin: 6px 0 4px;
}
.big-meta { color: var(--muted); font-size: 12px; font-family: var(--mono); }
@media (max-width: 700px) { .now-big { grid-template-columns: 1fr; } }

/* ───── clock ───── */
.clock-controls { display: flex; gap: 10px; margin-bottom: 16px; }
.clock-controls input { flex: 1; }

.grid {
  display: grid; grid-template-columns: repeat(auto-fill, minmax(240px, 1fr)); gap: 12px;
}
.tile {
  background: var(--bg-soft); border: 1px solid var(--border); border-radius: 8px;
  padding: 12px 14px; position: relative; transition: border-color .15s;
}
.tile:hover { border-color: var(--accent); }
.tile .tz-name { font-size: 12px; color: var(--muted); font-family: var(--mono); }
.tile .tz-time { font-family: var(--mono); font-size: 18px; font-weight: 600; margin: 4px 0; }
.tile .tz-meta { font-size: 11px; color: var(--muted); display: flex; gap: 8px; }
.tile .tz-del {
  position: absolute; top: 6px; right: 6px; width: 22px; height: 22px; line-height: 1;
  padding: 0; font-size: 14px; background: transparent; border: none; color: var(--muted);
  opacity: 0; transition: opacity .15s;
}
.tile:hover .tz-del { opacity: 1; }
.tile .tz-del:hover { color: var(--bad); }
.chip { display: inline-block; padding: 1px 7px; border-radius: 999px; font-size: 10px; font-weight: 600; }
.chip.dst { background: rgba(246, 176, 92, .15); color: var(--warn); }

/* ───── result ───── */
.result {
  font-family: var(--mono); font-size: 13px;
  background: var(--bg-soft); border: 1px solid var(--border); border-radius: 8px;
  padding: 14px 16px; min-height: 48px; white-space: pre-wrap; word-break: break-word;
}
.result.error { border-color: var(--bad); color: var(--bad); }
.kv { display: grid; grid-template-columns: max-content 1fr; gap: 6px 16px; }
.kv .k { color: var(--muted); }
.kv .v { color: var(--text); }

.result table { border-collapse: collapse; width: 100%; font-size: 13px; }
.result th, .result td {
  text-align: left; padding: 6px 10px; border-bottom: 1px solid var(--border);
}
.result th { color: var(--muted); font-weight: 600; font-size: 11px; text-transform: uppercase; letter-spacing: .6px; }

/* ───── tokens table ───── */
.tokens { margin-top: 14px; }
.tokens summary { cursor: pointer; color: var(--muted); font-size: 13px; }
.tokens table { border-collapse: collapse; margin-top: 10px; font-size: 13px; width: 100%; max-width: 620px; }
.tokens th, .tokens td { padding: 6px 10px; border-bottom: 1px solid var(--border); text-align: left; }
.tokens th { color: var(--muted); font-weight: 600; font-size: 11px; text-transform: uppercase; letter-spacing: .6px; }

/* ───── manipulate ───── */
.manip-bar {
  display: flex; flex-wrap: wrap; gap: 8px; margin-bottom: 14px;
  background: var(--bg-soft); border: 1px solid var(--border);
  border-radius: 8px; padding: 12px;
}
.manip-bar > * { flex: 0 0 auto; }
.manip-bar input[type=number] { width: 90px; }
.manip-bar input#manTzArg { min-width: 180px; }
.manip-bar select { min-width: 130px; }

.history { list-style: none; padding: 0; margin: 14px 0 0; display: grid; gap: 6px; }
.history li {
  font-family: var(--mono); font-size: 12px; color: var(--muted);
  background: var(--bg-soft); border-left: 3px solid var(--accent);
  padding: 6px 10px; border-radius: 4px;
}
.history li .op { color: var(--accent); }
.history li .arrow { color: var(--muted); margin: 0 8px; }
.history li .res { color: var(--text); }