/* Travel Clock — styles. Color tokens live on :root; dark is the default, light follows the system or the toggle. */

:root {
  --bg: #0b1220;
  --bg-2: #14203d;
  --surface: #131c31;
  --surface-2: #1a2643;
  --text: #e9eef8;
  --muted: #9aa7c0;
  --border: rgba(255, 255, 255, 0.09);
  --day: #f6bd47;
  --day-deep: #e0a42c;
  --day-now: #b95f06;
  --day-text: #1c1500;
  --night: #36538c;
  --night-deep: #2a4374;
  --night-now: #0e1b3a;
  --night-text: #ecf1ff;
  --accent: #6cc4ff;
  --focus: #8fd3ff;
  --shadow: 0 14px 36px rgba(3, 8, 20, 0.45);
  --radius: 18px;
  color-scheme: dark;
}

:root[data-theme="light"] {
  --bg: #f3f5fa;
  --bg-2: #dfe6f5;
  --surface: #ffffff;
  --surface-2: #f4f6fb;
  --text: #101828;
  --muted: #5b6780;
  --border: rgba(16, 24, 40, 0.10);
  --day: #ffd166;
  --day-deep: #f2b840;
  --day-now: #c27800;
  --day-text: #1c1500;
  --night: #c9d9f5;
  --night-deep: #b1c6ec;
  --night-now: #5b86cf;
  --night-text: #0f1c3a;
  --accent: #0b6fd6;
  --focus: #0b6fd6;
  --shadow: 0 12px 30px rgba(16, 24, 40, 0.10);
  color-scheme: light;
}

@media (prefers-color-scheme: light) {
  :root:not([data-theme="dark"]) {
    --bg: #f3f5fa;
    --bg-2: #dfe6f5;
    --surface: #ffffff;
    --surface-2: #f4f6fb;
    --text: #101828;
    --muted: #5b6780;
    --border: rgba(16, 24, 40, 0.10);
    --day: #ffd166;
    --day-deep: #f2b840;
    --day-now: #c27800;
    --day-text: #1c1500;
    --night: #c9d9f5;
    --night-deep: #b1c6ec;
    --night-now: #5b86cf;
    --night-text: #0f1c3a;
    --accent: #0b6fd6;
    --focus: #0b6fd6;
    --shadow: 0 12px 30px rgba(16, 24, 40, 0.10);
    color-scheme: light;
  }
}

*, *::before, *::after { box-sizing: border-box; }

html { -webkit-text-size-adjust: 100%; }

body {
  margin: 0;
  padding: 0 16px calc(28px + env(safe-area-inset-bottom));
  font-family: Inter, system-ui, -apple-system, "Segoe UI", Roboto, sans-serif;
  font-size: 16px;
  line-height: 1.45;
  color: var(--text);
  background:
    radial-gradient(1200px 520px at 15% -10%, var(--bg-2), transparent 70%),
    var(--bg);
  min-height: 100vh;
}

header.top, main, footer.foot { max-width: 1080px; margin: 0 auto; }

h1, h2, h3, p { margin: 0; }

.skip {
  position: absolute; left: 16px; top: -40px;
  background: var(--accent); color: #fff; padding: 8px 12px; border-radius: 8px; z-index: 10;
}
.skip:focus { top: 12px; }

/* ---------- header ---------- */
.top {
  display: flex; align-items: center; justify-content: space-between; gap: 16px; flex-wrap: wrap;
  padding: 22px 0 10px;
}
.brand { display: flex; align-items: center; gap: 14px; }
.brand-mark { width: 40px; height: 40px; color: var(--day); flex: none; }
h1 { font-size: 1.55rem; font-weight: 800; letter-spacing: -0.02em; line-height: 1.15; }
.tagline { color: var(--muted); font-weight: 500; font-size: 0.95rem; display: flex; align-items: center; gap: 8px; flex-wrap: wrap; }
.chip {
  display: inline-block; padding: 2px 9px; border-radius: 999px; font-size: 0.76rem; font-weight: 700;
  color: var(--text); background: var(--surface-2); border: 1px solid var(--border); letter-spacing: .01em;
}
.chip:empty { display: none; }
.controls { display: flex; gap: 10px; flex-wrap: wrap; }

/* ---------- buttons & fields ---------- */
.btn {
  display: inline-flex; align-items: center; gap: 8px;
  border: 1px solid var(--border); background: var(--surface-2); color: var(--text);
  padding: 9px 14px; border-radius: 999px; font: inherit; font-weight: 600; font-size: 0.92rem;
  cursor: pointer; transition: border-color .15s, background .15s, transform .05s;
}
.btn svg { width: 18px; height: 18px; }
.btn:hover { border-color: var(--accent); }
.btn:active { transform: translateY(1px); }
.btn:focus-visible, select:focus-visible, input:focus-visible {
  outline: 2px solid var(--focus); outline-offset: 2px;
}
.btn.ghost { background: transparent; }

.field { display: grid; gap: 6px; min-width: 0; font-size: 0.8rem; color: var(--muted); font-weight: 600; text-transform: uppercase; letter-spacing: .04em; }
.field select, .field input {
  font: inherit; font-size: 1rem; font-weight: 500; letter-spacing: 0; text-transform: none;
  color: var(--text); background: var(--surface-2); border: 1px solid var(--border);
  border-radius: 12px; padding: 10px 12px; min-height: 44px; width: 100%; min-width: 0;
}

/* ---------- clock cards ---------- */
.clocks { margin-top: 14px; }
.clock-grid { display: grid; grid-template-columns: repeat(3, minmax(0, 1fr)); gap: 16px; }

.clock {
  position: relative; overflow: hidden;
  background: var(--surface); border: 1px solid var(--border); border-radius: var(--radius);
  padding: 20px 22px 18px; box-shadow: var(--shadow);
}
.clock::before {
  content: ""; position: absolute; inset: 0 0 auto 0; height: 5px;
  background: linear-gradient(90deg, var(--night), var(--night-deep));
}
.clock.is-day::before { background: linear-gradient(90deg, var(--day), var(--day-deep)); }

.clock-head { display: flex; align-items: flex-start; justify-content: space-between; gap: 12px; }
.city { font-size: 1.15rem; font-weight: 700; display: flex; align-items: center; gap: 8px; flex-wrap: wrap; }
.region { color: var(--muted); font-size: 0.86rem; margin-top: 2px; }
.region .why { opacity: .85; }
.sky { width: 30px; height: 30px; flex: none; }
.sky svg { width: 30px; height: 30px; display: block; }
.sky .sun { color: var(--day); }
.sky .moon { color: var(--accent); }
.clock.is-day .moon, .clock.is-night .sun { display: none; }

.clock .time {
  margin-top: 10px;
  font-size: clamp(2.1rem, 4.2vw, 2.9rem); font-weight: 800; letter-spacing: -0.03em; line-height: 1.05;
  font-variant-numeric: tabular-nums;
}
.clock .date { margin-top: 6px; font-weight: 600; }
.clock .zone { color: var(--muted); font-size: 0.9rem; margin-top: 2px; }
.clock .delta { margin-top: 12px; font-size: 0.9rem; font-weight: 600; color: var(--muted); border-top: 1px solid var(--border); padding-top: 10px; }

.here-badge {
  display: inline-block; font-size: 0.7rem; font-weight: 700; letter-spacing: .04em; text-transform: uppercase;
  color: var(--day-text); background: var(--day); border-radius: 999px; padding: 3px 9px;
}

.here-note { margin-top: 14px; color: var(--muted); font-size: 0.92rem; }
.loc-status { margin-top: 4px; color: var(--accent); font-size: 0.9rem; min-height: 1.3em; }

/* ---------- panels ---------- */
.panel {
  margin-top: 26px; background: var(--surface); border: 1px solid var(--border);
  border-radius: var(--radius); padding: 20px 22px 22px; box-shadow: var(--shadow);
}
.panel-head { display: flex; align-items: baseline; justify-content: space-between; gap: 12px; flex-wrap: wrap; margin-bottom: 14px; }
.panel h2 { font-size: 1.15rem; font-weight: 700; letter-spacing: -0.01em; }
.panel h3 { font-size: 0.82rem; font-weight: 700; color: var(--muted); text-transform: uppercase; letter-spacing: .05em; margin-bottom: 10px; }
.legend { display: flex; gap: 16px; flex-wrap: wrap; color: var(--muted); font-size: 0.86rem; }
.legend span { display: inline-flex; align-items: center; gap: 6px; }
.swatch { display: inline-block; width: 14px; height: 14px; border-radius: 4px; }
.swatch.day { background: var(--day); }
.swatch.night { background: var(--night); }
.swatch.split { background: linear-gradient(110deg, var(--night) 0 48%, var(--day) 52% 100%); }

/* ---------- 24-hour table ---------- */
.table-wrap { overflow-x: auto; -webkit-overflow-scrolling: touch; margin: 0 -6px; }
table { width: 100%; border-collapse: separate; border-spacing: 5px; min-width: 420px; }
th {
  text-align: left; font-size: 0.8rem; font-weight: 700; color: var(--muted);
  text-transform: uppercase; letter-spacing: .05em; padding: 4px 12px 8px;
}
th small { display: block; font-weight: 500; text-transform: none; letter-spacing: 0; font-size: 0.78rem; }
td {
  padding: 9px 12px; border-radius: 11px; font-variant-numeric: tabular-nums;
  white-space: nowrap; font-size: 0.98rem;
}
td.day { background: var(--day); color: var(--day-text); }
td.night { background: var(--night); color: var(--night-text); }
td .t { font-weight: 700; }
td .d { opacity: .85; margin-left: 6px; font-size: 0.86rem; }
td .d em { font-style: normal; font-weight: 600; opacity: .9; margin-left: 4px; }
/* Current hour: solid, darkest shade of whichever state the sun is in right now at that place. */
td.now-day { background: var(--day-now); color: var(--day-text); }
td.now-night { background: var(--night-now); color: var(--night-text); }
tr.now td { box-shadow: inset 0 0 0 1.5px rgba(255, 255, 255, 0.22); }
th .sun-times { font-size: 0.72rem; opacity: .85; }

/* Transition blocks: the sun rises (night→day) or sets (day→night) during that hour. The boundary sits at
   --cut (25/50/75 %, set from JS) and leans like a "/" . Text keeps the normal block typography; its color
   follows the wider segment, with a faint halo so it stays legible where it crosses the boundary. */
td.split-rise, td.split-set { --cut: 50%; }
td.split-rise { background: linear-gradient(110deg, var(--night) 0 calc(var(--cut) - 0.8%), var(--day) calc(var(--cut) + 0.8%) 100%); }
td.split-set  { background: linear-gradient(110deg, var(--day) 0 calc(var(--cut) - 0.8%), var(--night) calc(var(--cut) + 0.8%) 100%); }
td.split-rise.text-first, td.split-set.text-second { color: var(--night-text); text-shadow: 0 0 3px rgba(0, 0, 0, 0.5); }
td.split-rise.text-second, td.split-set.text-first { color: var(--day-text); text-shadow: 0 0 3px rgba(255, 255, 255, 0.4); }
.now-pill {
  float: right; font-size: 0.66rem; font-weight: 800; letter-spacing: .06em; text-transform: uppercase;
  background: var(--text); color: var(--bg); border-radius: 999px; padding: 2px 7px; margin-left: 8px;
}

/* ---------- converter ---------- */
.conv-form { display: grid; grid-template-columns: 1.5fr 1fr 1fr auto; gap: 12px; align-items: end; }
.conv-form .btn { min-height: 44px; justify-content: center; }
.conv-results { display: grid; grid-template-columns: repeat(auto-fit, minmax(210px, 1fr)); gap: 12px; margin-top: 16px; }
.conv { border-radius: 14px; padding: 14px 16px 12px; }
.conv.day { background: var(--day); color: var(--day-text); }
.conv.night { background: var(--night); color: var(--night-text); }
.conv.src { outline: 2px solid var(--text); outline-offset: 2px; }
.conv h3 { color: inherit; opacity: .85; margin-bottom: 4px; display: flex; align-items: center; gap: 8px; }
.conv .time { font-size: 1.7rem; font-weight: 800; letter-spacing: -0.02em; font-variant-numeric: tabular-nums; }
.conv .date { font-weight: 600; margin-top: 2px; display: flex; align-items: center; gap: 8px; flex-wrap: wrap; }
.conv .zone { opacity: .8; font-size: 0.86rem; margin-top: 2px; }
.tag {
  display: inline-block; font-size: 0.66rem; font-weight: 800; letter-spacing: .05em; text-transform: uppercase;
  border-radius: 999px; padding: 2px 7px; background: rgba(0, 0, 0, .18); color: inherit;
}
.tag.rel { background: rgba(255, 255, 255, .28); }
.day .tag.rel { background: rgba(0, 0, 0, .14); }
.hint { color: var(--muted); font-size: 0.9rem; grid-column: 1 / -1; }
.hint.warn { color: var(--day); }

/* ---------- notes ---------- */
.notes-grid { display: grid; grid-template-columns: 1fr 1fr; gap: 24px; }
.itin, .dst { list-style: none; margin: 0; padding: 0; display: grid; gap: 8px; }
.itin li {
  display: grid; grid-template-columns: 200px 1fr; gap: 10px; padding: 8px 12px;
  border-left: 3px solid var(--border); border-radius: 6px; font-size: 0.92rem;
}
.itin li .when { color: var(--muted); font-variant-numeric: tabular-nums; }
.itin li .what small { display: block; font-size: 0.8rem; color: var(--muted); margin-top: 1px; }
.itin li.past { opacity: .6; }
.itin li.current { border-left-color: var(--day); background: var(--surface-2); }
.itin li.current .when { color: var(--text); }
.itin li.pending { border-left-style: dashed; color: var(--muted); }
.itin .tag { background: var(--surface-2); border: 1px solid var(--border); color: var(--text); margin-left: 6px; vertical-align: middle; }
.itin .tag.who { background: var(--accent); border-color: transparent; color: #fff; }
.itin li.current .tag:not(.who) { background: var(--day); color: var(--day-text); border-color: transparent; }
.dst li { padding: 8px 12px; border-left: 3px solid var(--accent); border-radius: 6px; font-size: 0.92rem; }
.dst li.quiet { border-left-color: var(--border); color: var(--muted); }

.foot { margin-top: 26px; color: var(--muted); font-size: 0.82rem; text-align: center; }

/* ---------- responsive ---------- */
@media (max-width: 860px) {
  .clock-grid { grid-template-columns: 1fr; }
  .notes-grid { grid-template-columns: 1fr; }
  .conv-form { grid-template-columns: 1fr 1fr; }
  .conv-form .field:first-child { grid-column: 1 / -1; }
  .conv-form .btn { grid-column: 1 / -1; }
}
@media (max-width: 520px) {
  body { padding-left: 12px; padding-right: 12px; }
  .panel { padding: 16px 14px 18px; }

  /* Compact header: brand and controls share one row. */
  .top { padding: 12px 0 4px; flex-wrap: nowrap; align-items: flex-start; gap: 10px; }
  .brand { gap: 10px; min-width: 0; flex: 1; }
  .brand-mark { width: 30px; height: 30px; margin-top: 2px; }
  h1 { font-size: 1.2rem; }
  .tagline { font-size: 0.82rem; gap: 6px; }
  .chip { font-size: 0.7rem; padding: 1px 7px; }
  .controls { flex: none; gap: 6px; }
  .controls .btn { padding: 7px 10px; font-size: 0.8rem; }
  #locBtn span { display: none; }

  /* Compact clock cards so all three fit the first screen. */
  .clocks { margin-top: 8px; }
  .clock-grid { gap: 10px; }
  .clock { padding: 12px 14px 12px; border-radius: 14px; }
  .clock::before { height: 4px; }
  .city { font-size: 1rem; }
  .here-badge { font-size: 0.62rem; padding: 2px 7px; }
  .sky, .sky svg { width: 24px; height: 24px; }
  .clock .time { font-size: 2.1rem; margin-top: 4px; }
  .clock .date, .clock .delta { display: inline; font-size: 0.9rem; }
  .clock .delta { border: 0; padding: 0; margin: 0; font-weight: 500; }
  .clock .delta::before { content: " · "; }
  .here-note { margin-top: 8px; font-size: 0.8rem; }
  .loc-status { font-size: 0.8rem; }
  table { min-width: 0; border-spacing: 3px; }
  th, td { padding-left: 8px; padding-right: 8px; }
  td { font-size: 0.9rem; }
  td .d { display: block; margin-left: 0; font-size: 0.78rem; }
  .now-pill { float: none; display: inline-block; margin-left: 6px; }
  .itin li { grid-template-columns: 1fr; gap: 2px; }
}

@media (prefers-reduced-motion: reduce) {
  * { transition: none !important; }
}