/* Slnočas
   A borderless sheet of ruled rows: reading first, controls after.
   The ink follows the sun: white page while slnočas >= 0, black page while < 0. */

/* ---------- Tokens ---------- */

:root {
  --bg: #ffffff;
  --fg: #000000;
  --font: "Datatype", ui-monospace, Menlo, Consolas, monospace;
  --tap: 44px;
  color-scheme: light;
}

:root[data-sun="night"] {
  --bg: #000000;
  --fg: #ffffff;
  color-scheme: dark;
}

/* ---------- Base ---------- */

*, *::before, *::after { box-sizing: border-box; border-radius: 0; }
[hidden] { display: none !important; }

html, body { margin: 0; }

body {
  background: var(--bg);
  color: var(--fg);
  font-family: var(--font);
  font-size: 14px;
  line-height: 1.45;
  font-variant-numeric: tabular-nums;
  -webkit-text-size-adjust: 100%;
  padding-top: max(16px, env(safe-area-inset-top, 0px));
  padding-bottom: max(40px, env(safe-area-inset-bottom, 0px));
  padding-left: max(16px, env(safe-area-inset-left, 0px));
  padding-right: max(16px, env(safe-area-inset-right, 0px));
}

h1 { margin: 0; font-size: 16px; font-weight: 700; letter-spacing: .02em; }
h2 { margin: 0; font-weight: 400; }
p  { margin: 0; max-width: 65ch; }

a {
  color: inherit;
  text-decoration: underline;
  text-decoration-thickness: 1px;
  text-underline-offset: 3px;
}

.k { text-transform: uppercase; letter-spacing: .1em; font-size: 11px; }
.small { font-size: 12px; }

/* Before a place is known, only the prompt is shown; afterwards, only the readings. */
body.no-place .needs-place,
body:not(.no-place) .empty-state { display: none; }

/* ---------- Sheet ---------- */

.sheet { max-width: 860px; margin: 0 auto; }

.cell { border-bottom: 1px solid var(--fg); padding: 14px 0; min-width: 0; }
.cell:last-child { border-bottom: 0; }

header.cell {
  display: flex;
  justify-content: space-between;
  align-items: center;
  gap: 12px;
  padding-top: 4px;
}

.empty-state { display: grid; gap: 12px; justify-items: start; }

/* ---------- Reading ---------- */

.value {
  font-weight: 700;
  font-size: clamp(56px, 16vw, 112px);
  line-height: 1;
  letter-spacing: -.04em;
  margin: 8px 0 6px;
  white-space: nowrap;
}
.arrow { font-size: .5em; vertical-align: .25em; margin-right: .08em; }
#phase { font-size: 15px; }
#nextEvent { font-size: 13px; margin-top: 2px; }

canvas { display: block; width: 100%; max-width: 100%; }
#wave { height: 240px; }
#year { height: 120px; cursor: pointer; touch-action: pan-y; }

/* ---------- Tables ---------- */

table { width: 100%; border-collapse: collapse; font-size: 13px; }
th, td {
  border: 1px solid var(--fg);
  padding: 7px 8px;
  text-align: left;
  font-weight: 400;
  vertical-align: middle;
}
th { text-transform: uppercase; letter-spacing: .08em; font-size: 10.5px; }
.num { text-align: right; white-space: nowrap; }

.flush { padding: 0; }
.flush table, .results { border-style: hidden; }
.flush tr > :first-child, .results td:first-child { padding-left: 0; }
.flush tr > :last-child,  .results td:last-child  { padding-right: 0; }

.kv th { width: 1%; white-space: nowrap; }

.current td { background: var(--fg); color: var(--bg); }
.current td:first-child { padding-left: 6px; }

/* hour bars: filled for day, outlined for night, centred on zero */
.bar { position: relative; height: 9px; width: 100%; min-width: 80px; }
.bar::before { content: ""; position: absolute; left: 50%; top: -3px; bottom: -3px; border-left: 1px solid currentColor; }
.bar i { position: absolute; top: 0; bottom: 0; background: currentColor; }
.bar i.night { background: transparent; border: 1px solid currentColor; }

/* ---------- Controls ---------- */

.controls, .place-panel { display: grid; gap: 12px; }
.row { display: flex; flex-wrap: wrap; gap: 8px; align-items: center; }
.field { display: grid; gap: 4px; flex: 1 1 150px; min-width: 0; }
.field input { width: 100%; }
.align-end { align-self: end; }
.push-right { margin-left: auto; }

input {
  font: inherit;
  font-size: 16px; /* keeps iOS from zooming on focus */
  height: var(--tap);
  padding: 0 10px;
  border: 1px solid var(--fg);
  background: var(--bg);
  color: var(--fg);
  min-width: 0;
}

button {
  font: inherit;
  font-size: 12px;
  text-transform: uppercase;
  letter-spacing: .08em;
  min-height: var(--tap);
  min-width: var(--tap);
  padding: 0 14px;
  border: 1px solid var(--fg);
  background: var(--bg);
  color: var(--fg);
  cursor: pointer;
  touch-action: manipulation;
}

.tabs { display: grid; grid-template-columns: 1fr 1fr; border: 1px solid var(--fg); }
.tabs button { border: 0; }
.tabs button + button { border-left: 1px solid var(--fg); }
.tabs button[aria-selected="true"] { background: var(--fg); color: var(--bg); }

.place-button {
  display: grid;
  justify-items: end;
  gap: 1px;
  max-width: 70%;
  padding: 4px 0 4px 12px;
  border: 0;
  text-align: right;
  text-transform: none;
  letter-spacing: 0;
  font-size: 14px;
}
.place-name {
  max-width: 100%;
  overflow: hidden;
  text-overflow: ellipsis;
  white-space: nowrap;
  text-decoration: underline;
  text-decoration-thickness: 1px;
  text-underline-offset: 3px;
}
.place-name::after { content: " ▾"; }
.place-button[aria-expanded="true"] .place-name::after { content: " ▴"; }

.results td { padding-top: 4px; padding-bottom: 4px; }
.results button {
  width: 100%;
  padding: 0;
  border: 0;
  text-align: left;
  text-transform: none;
  letter-spacing: 0;
  font-size: 14px;
}

/* ---------- About ---------- */

.about { display: grid; gap: 12px; padding-top: 28px; }
.about h2 { margin-bottom: 4px; }
.about p { font-size: 15px; line-height: 1.6; text-wrap: pretty; }

/* ---------- States ---------- */

@media (hover: hover) {
  button:hover { background: var(--fg); color: var(--bg); }
  .place-button:hover, .results button:hover { background: var(--bg); color: var(--fg); }
  .place-button:hover .place-name, .results button:hover { text-decoration: underline 2px; }
  a:hover { background: var(--fg); color: var(--bg); text-decoration: none; }
}

button:focus-visible, input:focus-visible, a:focus-visible { outline: 2px solid var(--fg); outline-offset: 2px; }

@media (max-width: 560px) {
  #wave { height: 190px; }
}