/*
 * SUTTON PREDICTOR — a 1974 teletext service that somehow runs on Rails.
 *
 * The whole palette is the seven teletext colours (plus black). Nothing else is
 * allowed in. Text is uppercase, spacing is on a character grid, and the header
 * apes a CEEFAX page furniture bar.
 */

:root {
  --tt-black: #000000;
  --tt-red: #ff0000;
  --tt-green: #00ff00;
  --tt-yellow: #ffff00;
  --tt-blue: #0000ff;
  --tt-magenta: #ff00ff;
  --tt-cyan: #00ffff;
  --tt-white: #ffffff;

  --tt-dim: #6a6a6a;
  --tt-font: "Cascadia Mono", "SF Mono", ui-monospace, Menlo, Consolas, "DejaVu Sans Mono", monospace;
  --tt-cell: 1ch;
}

* { box-sizing: border-box; }

html {
  background: var(--tt-black);
  font-size: clamp(14px, 1.05vw + 10px, 19px);
}

body {
  margin: 0;
  padding: 0 0 4rem;
  background: var(--tt-black);
  color: var(--tt-white);
  font-family: var(--tt-font);
  font-weight: 700;
  letter-spacing: 0.06em;
  line-height: 1.35;
  text-transform: uppercase;
  -webkit-font-smoothing: none;
  font-smooth: never;
}

/* The faint horizontal ruling of a CRT, kept subtle enough to read through. */
body::after {
  content: "";
  position: fixed;
  inset: 0;
  pointer-events: none;
  z-index: 50;
  background: repeating-linear-gradient(
    to bottom,
    rgba(0, 0, 0, 0) 0,
    rgba(0, 0, 0, 0) 2px,
    rgba(0, 0, 0, 0.22) 3px,
    rgba(0, 0, 0, 0.22) 4px
  );
}

.screen {
  max-width: 46rem;
  margin: 0 auto;
  padding: 0.75rem 0.75rem 0;
}

/* ---------- page furniture ---------------------------------------------- */

.tt-header {
  display: flex;
  flex-wrap: wrap;
  gap: 0 1ch;
  align-items: baseline;
  justify-content: space-between;
  color: var(--tt-cyan);
  padding-bottom: 0.35rem;
}

.tt-header a { color: var(--tt-cyan); }
.tt-header__page { color: var(--tt-white); background: var(--tt-red); padding: 0 1ch; }
.tt-header__service { color: var(--tt-yellow); }
.tt-header__clock { color: var(--tt-white); margin-left: auto; }

/* Double-height headline, the teletext staple. */
.tt-title {
  display: block;
  background: var(--tt-blue);
  color: var(--tt-yellow);
  font-size: 1.9rem;
  line-height: 1.15;
  letter-spacing: 0.12em;
  padding: 0.15em 1ch;
  margin: 0 0 0.6rem;
  overflow-wrap: anywhere;
}

.tt-title--red { background: var(--tt-red); color: var(--tt-white); }
.tt-title--green { background: var(--tt-green); color: var(--tt-black); }
.tt-title--cyan { background: var(--tt-cyan); color: var(--tt-black); }
.tt-title--magenta { background: var(--tt-magenta); color: var(--tt-black); }

.tt-subtitle {
  color: var(--tt-cyan);
  margin: 0 0 0.9rem;
  font-size: 1rem;
}

/* A run of mosaic blocks used as a rule between sections. */
.tt-rule {
  color: var(--tt-blue);
  overflow: hidden;
  white-space: nowrap;
  margin: 0.9rem 0;
  user-select: none;
}
.tt-rule::before { content: "████████████████████████████████████████████████████████████"; }
.tt-rule--yellow { color: var(--tt-yellow); }
.tt-rule--cyan { color: var(--tt-cyan); }
.tt-rule--green { color: var(--tt-green); }
.tt-rule--magenta { color: var(--tt-magenta); }
.tt-rule--red { color: var(--tt-red); }

.tt-section {
  color: var(--tt-black);
  background: var(--tt-cyan);
  display: inline-block;
  padding: 0 1ch;
  margin: 1.4rem 0 0.6rem;
  font-size: 1rem;
}
.tt-section--yellow { background: var(--tt-yellow); }
.tt-section--green { background: var(--tt-green); }
.tt-section--magenta { background: var(--tt-magenta); }
.tt-section--white { background: var(--tt-white); }
.tt-section--red { background: var(--tt-red); color: var(--tt-white); }

/* ---------- colour utilities -------------------------------------------- */

.c-red { color: var(--tt-red); }
.c-green { color: var(--tt-green); }
.c-yellow { color: var(--tt-yellow); }
.c-blue { color: var(--tt-blue); }
.c-magenta { color: var(--tt-magenta); }
.c-cyan { color: var(--tt-cyan); }
.c-white { color: var(--tt-white); }
.c-dim { color: var(--tt-dim); }

.tt-flash { animation: tt-flash 1s steps(1) infinite; }
@keyframes tt-flash { 50% { opacity: 0; } }

@media (prefers-reduced-motion: reduce) {
  .tt-flash { animation: none; }
}

/* ---------- links and buttons ------------------------------------------- */

a {
  color: var(--tt-cyan);
  text-decoration: none;
  border-bottom: 2px solid currentColor;
}
a:hover, a:focus-visible { background: var(--tt-cyan); color: var(--tt-black); outline: none; }

.tt-btn {
  display: inline-block;
  font: inherit;
  text-transform: uppercase;
  letter-spacing: 0.08em;
  background: var(--tt-white);
  color: var(--tt-black);
  border: 0;
  border-bottom: 0;
  padding: 0.35rem 1.5ch;
  cursor: pointer;
  text-decoration: none;
}
.tt-btn:hover, .tt-btn:focus-visible { background: var(--tt-yellow); color: var(--tt-black); outline: 2px solid var(--tt-white); }
.tt-btn--green { background: var(--tt-green); }
.tt-btn--yellow { background: var(--tt-yellow); }
.tt-btn--cyan { background: var(--tt-cyan); }
.tt-btn--red { background: var(--tt-red); color: var(--tt-white); }
.tt-btn--magenta { background: var(--tt-magenta); color: var(--tt-black); }
.tt-btn--big { font-size: 1.25rem; padding: 0.5rem 2ch; }
.tt-btn:disabled { background: var(--tt-dim); color: var(--tt-black); cursor: not-allowed; }

/* The four coloured fastext keys along the bottom of every page. */
.tt-fastext {
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  gap: 1px;
  margin: 1.5rem 0 0.75rem;
  font-size: 0.8rem;
}
.tt-fastext a {
  border: 0;
  padding: 0.4rem 0.5ch;
  text-align: center;
  color: var(--tt-black);
  overflow: hidden;
  text-overflow: ellipsis;
  white-space: nowrap;
}
.tt-fastext a:nth-child(1) { background: var(--tt-red); color: var(--tt-white); }
.tt-fastext a:nth-child(2) { background: var(--tt-green); }
.tt-fastext a:nth-child(3) { background: var(--tt-yellow); }
.tt-fastext a:nth-child(4) { background: var(--tt-cyan); }
.tt-fastext a:hover, .tt-fastext a:focus-visible { outline: 2px solid var(--tt-white); outline-offset: -2px; }

/* ---------- messages ----------------------------------------------------- */

.tt-flash-msg {
  padding: 0.35rem 1ch;
  margin: 0 0 0.75rem;
  background: var(--tt-green);
  color: var(--tt-black);
}
.tt-flash-msg--alert { background: var(--tt-red); color: var(--tt-white); }

.tt-errors {
  border: 2px solid var(--tt-red);
  color: var(--tt-red);
  padding: 0.5rem 1ch;
  margin-bottom: 1rem;
}
.tt-errors ul { margin: 0.25rem 0 0; padding-left: 3ch; }

/* ---------- tables ------------------------------------------------------- */

.tt-table {
  width: 100%;
  border-collapse: collapse;
  font-size: 0.95rem;
}
.tt-table th {
  text-align: left;
  color: var(--tt-black);
  background: var(--tt-cyan);
  padding: 0.15rem 1ch;
  font-weight: 700;
}
.tt-table td { padding: 0.15rem 1ch; color: var(--tt-white); }
.tt-table tbody tr:nth-child(odd) td { background: #000080; }
.tt-table .num { text-align: right; font-variant-numeric: tabular-nums; }
.tt-table__pos { color: var(--tt-yellow); }
.tt-scroll { overflow-x: auto; }

/* ---------- match cards -------------------------------------------------- */

.tt-match {
  border: 2px solid var(--tt-blue);
  padding: 0.6rem 1ch;
  margin-bottom: 0.75rem;
}
.tt-match__meta { color: var(--tt-green); font-size: 0.8rem; }
.tt-match__teams {
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  gap: 0 1ch;
  font-size: 1.05rem;
  color: var(--tt-white);
  margin: 0.2rem 0 0.5rem;
}
.tt-match__v { color: var(--tt-yellow); }
.tt-match__result { color: var(--tt-yellow); font-size: 1.3rem; }

/* Score entry: two fat teletext boxes with a dash between. */
.tt-scorebox {
  display: flex;
  align-items: center;
  gap: 1ch;
  flex-wrap: wrap;
}
.tt-scorebox input[type="number"] {
  width: 4ch;
  font: inherit;
  font-size: 1.6rem;
  text-align: center;
  background: var(--tt-black);
  color: var(--tt-yellow);
  border: 2px solid var(--tt-white);
  padding: 0.1rem 0;
  -moz-appearance: textfield;
}
.tt-scorebox input[type="number"]::-webkit-outer-spin-button,
.tt-scorebox input[type="number"]::-webkit-inner-spin-button { -webkit-appearance: none; margin: 0; }
.tt-scorebox input:focus { outline: none; background: var(--tt-blue); color: var(--tt-white); }
.tt-scorebox__dash { color: var(--tt-white); font-size: 1.4rem; }
.tt-scorebox__label { color: var(--tt-cyan); font-size: 0.8rem; min-width: 12ch; }

/* ---------- forms -------------------------------------------------------- */

.tt-field { margin-bottom: 0.9rem; }
.tt-field label, .tt-label { display: block; color: var(--tt-cyan); margin-bottom: 0.2rem; font-size: 0.9rem; }

.tt-input, input[type="text"], input[type="email"], input[type="password"],
input[type="datetime-local"], input[type="date"], input[type="number"], select, textarea {
  width: 100%;
  font: inherit;
  text-transform: uppercase;
  background: var(--tt-black);
  color: var(--tt-white);
  border: 2px solid var(--tt-white);
  padding: 0.3rem 1ch;
}
textarea { text-transform: none; min-height: 4.5rem; resize: vertical; }
input:focus, select:focus, textarea:focus { outline: none; border-color: var(--tt-yellow); color: var(--tt-yellow); }
select { border-radius: 0; }
.tt-hint { color: var(--tt-dim); font-size: 0.8rem; text-transform: none; }
.tt-inline { display: flex; gap: 1ch; flex-wrap: wrap; align-items: flex-end; }
.tt-inline > * { flex: 1 1 12ch; }

/* Choice rows: big tap targets, no fiddly checkboxes. */
.tt-choice {
  display: flex;
  align-items: center;
  gap: 1ch;
  border: 2px solid var(--tt-blue);
  padding: 0.4rem 1ch;
  margin-bottom: 0.4rem;
  cursor: pointer;
  color: var(--tt-white);
}
.tt-choice input { position: absolute; opacity: 0; pointer-events: none; }
.tt-choice__box {
  flex: 0 0 auto;
  width: 3ch;
  text-align: center;
  color: var(--tt-yellow);
}
.tt-choice__box::before { content: "[ ]"; }
.tt-choice:has(input:checked) { border-color: var(--tt-green); background: #002200; }
.tt-choice:has(input:checked) .tt-choice__box { color: var(--tt-green); }
.tt-choice:has(input:checked) .tt-choice__box::before { content: "[X]"; }
.tt-choice:has(input:focus-visible) { outline: 2px solid var(--tt-white); }
.tt-choice__votes { margin-left: auto; color: var(--tt-cyan); font-size: 0.8rem; }

/* ---------- the sidebet wheel -------------------------------------------- */

.tt-wheel-stage { text-align: center; padding: 0.5rem 0 1rem; }

.tt-wheel-wrap {
  position: relative;
  width: min(16rem, 70vw);
  margin: 0.75rem auto;
  aspect-ratio: 1;
}

.tt-wheel {
  width: 100%;
  height: 100%;
  border-radius: 50%;
  border: 4px solid var(--tt-white);
  background: conic-gradient(
    var(--tt-red) 0deg 45deg,
    var(--tt-yellow) 45deg 90deg,
    var(--tt-green) 90deg 135deg,
    var(--tt-cyan) 135deg 180deg,
    var(--tt-blue) 180deg 225deg,
    var(--tt-magenta) 225deg 270deg,
    var(--tt-white) 270deg 315deg,
    var(--tt-black) 315deg 360deg
  );
  transform: rotate(0deg);
  transition: transform 3.2s cubic-bezier(0.15, 0.85, 0.2, 1);
  cursor: pointer;
  display: block;
  padding: 0;
}
.tt-wheel:focus-visible { outline: 3px solid var(--tt-yellow); outline-offset: 4px; }

.tt-wheel__hub {
  position: absolute;
  inset: 50% auto auto 50%;
  transform: translate(-50%, -50%);
  background: var(--tt-black);
  color: var(--tt-yellow);
  border: 3px solid var(--tt-white);
  border-radius: 50%;
  width: 42%;
  aspect-ratio: 1;
  display: grid;
  place-content: center;
  font-size: 0.8rem;
  text-align: center;
  pointer-events: none;
  line-height: 1.2;
}

.tt-wheel__pointer {
  position: absolute;
  top: -0.6rem;
  left: 50%;
  transform: translateX(-50%);
  color: var(--tt-white);
  font-size: 1.5rem;
  line-height: 1;
  pointer-events: none;
}

@media (prefers-reduced-motion: reduce) {
  .tt-wheel { transition: none; }
}

.tt-sidebet-question {
  border: 2px solid var(--tt-magenta);
  padding: 0.6rem 1ch;
  color: var(--tt-magenta);
  font-size: 1.15rem;
  margin-bottom: 0.5rem;
}
.tt-sidebet-detail { color: var(--tt-cyan); font-size: 0.85rem; text-transform: none; }

/* ---------- misc --------------------------------------------------------- */

.tt-stack > * + * { margin-top: 0.75rem; }
.tt-grid { display: grid; gap: 0.75rem; grid-template-columns: repeat(auto-fit, minmax(14rem, 1fr)); }
.tt-panel { border: 2px solid var(--tt-blue); padding: 0.6rem 1ch; }
.tt-panel__value { color: var(--tt-yellow); font-size: 1.6rem; }
.tt-panel__label { color: var(--tt-cyan); font-size: 0.8rem; }
.tt-center { text-align: center; }
.tt-right { text-align: right; }
.tt-actions { display: flex; gap: 1ch; flex-wrap: wrap; align-items: center; margin-top: 1rem; }
.tt-nowrap { white-space: nowrap; }
.tt-small { font-size: 0.8rem; }
.tt-copy { text-transform: none; word-break: break-all; color: var(--tt-yellow); }

.tt-empty { border: 2px dashed var(--tt-dim); color: var(--tt-dim); padding: 1rem 1ch; text-align: center; }

.visually-hidden {
  position: absolute; width: 1px; height: 1px; padding: 0; margin: -1px;
  overflow: hidden; clip: rect(0 0 0 0); white-space: nowrap; border: 0;
}

/* Admin pages wear a green service bar so you always know where you are. */
.admin .tt-header__page { background: var(--tt-green); color: var(--tt-black); }