/*
 * FLL Team Code Sync — styles.
 *
 * Built for 9-to-11-year-olds on shared tablets: big targets (NFR-4),
 * one primary action per screen, no hover-only behaviour (NFR-2), and colors
 * driven entirely by CSS variables the app sets from settings (CS-9).
 *
 * The --*-text variables are computed in JavaScript so every text/background
 * pair clears WCAG AA 4.5:1, whatever colors the coach picks (NFR-8).
 */

:root {
  --primary: #006633;
  --primary-text: #ffffff;
  --primary-dark: #004d26;
  --accent: #feb835;
  --accent-text: #141414;

  --ink: #17201b;
  --ink-soft: #4a544d;
  --page: #f4f6f4;
  --card: #ffffff;
  --line: #d3dad4;
  --good: #14733c;
  --good-bg: #e6f4ea;
  --bad: #9a1b1b;
  --bad-bg: #fdeaea;

  --radius: 16px;
  --tap: 64px;          /* NFR-4: minimum button height */
  --gap: 16px;
  --font: 'Segoe UI', system-ui, -apple-system, 'Helvetica Neue', Arial, sans-serif;
}

* { box-sizing: border-box; }

/*
 * Several classes here set `display`, which would otherwise beat the browser's
 * own rule for the `hidden` attribute and leave empty boxes on screen.
 */
[hidden] { display: none !important; }

html, body { height: 100%; }

body {
  margin: 0;
  font-family: var(--font);
  font-size: 20px;               /* NFR-4: 20px or larger text */
  line-height: 1.45;
  color: var(--ink);
  background: var(--page);
  -webkit-text-size-adjust: 100%;
}

.sprite { display: none; }

.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;
}

/* --- Header --- */

.app-header { position: sticky; top: 0; z-index: 5; }

.app-header__stripe { height: 10px; background: var(--accent); }

.app-header__bar {
  display: flex; align-items: center; justify-content: space-between; gap: var(--gap);
  padding: 12px 20px;
  background: var(--primary);
  color: var(--primary-text);
}

.app-header__title {
  display: flex; align-items: center; gap: 12px;
  margin: 0; font-size: 26px; line-height: 1.2;
}

.icon { width: 1.2em; height: 1.2em; flex: none; }
.icon--title { width: 32px; height: 32px; }
.icon--big { width: 40px; height: 40px; }
.icon--huge { width: 110px; height: 110px; }

.coach-link {
  display: inline-flex; align-items: center; gap: 8px;
  min-height: 48px; padding: 8px 16px;
  font: inherit; font-size: 18px;
  color: var(--primary-text);
  background: transparent;
  border: 2px solid currentColor; border-radius: 999px;
  cursor: pointer;
}

.coach-link:focus-visible, .btn:focus-visible, .card:focus-visible,
.field__input:focus-visible, summary:focus-visible, .dropzone:focus-visible {
  outline: 4px solid #1d4ed8;
  outline-offset: 3px;
}

/* --- Layout --- */

.main {
  max-width: 900px;
  margin: 0 auto;
  padding: 24px 20px 40px;
}

.screen { display: grid; gap: var(--gap); }
.screen--center { justify-items: center; text-align: center; }

.screen__title { margin: 0; font-size: 30px; line-height: 1.2; }
.screen__title--huge { font-size: 44px; }
.screen__help { margin: 0; font-size: 20px; color: var(--ink-soft); }

.stack { display: grid; gap: var(--gap); }

/* --- Buttons --- */

.btn {
  display: flex; align-items: center; gap: 14px;
  width: 100%;
  min-height: var(--tap);
  padding: 14px 20px;
  font: inherit; font-size: 22px; font-weight: 600; text-align: left;
  color: var(--ink);
  background: var(--card);
  border: 3px solid var(--line);
  border-radius: var(--radius);
  cursor: pointer;
  -webkit-tap-highlight-color: transparent;
}

a.btn { text-decoration: none; }

.btn:active { transform: translateY(1px); }

.btn__stack { display: grid; }
.btn__main { font-size: 22px; }
.btn__hint { font-size: 16px; font-weight: 500; opacity: 0.85; }

.btn--tall { min-height: 88px; }

.btn--primary {
  color: var(--primary-text);
  background: var(--primary);
  border-color: var(--primary-dark);
  font-size: 24px;
}

.btn--accent {
  color: var(--accent-text);
  background: var(--accent);
  border-color: var(--accent);
}

.btn--secondary {
  color: var(--primary);
  background: var(--card);
  border-color: var(--primary);
}

.btn--quiet {
  min-height: 56px;
  font-size: 19px; font-weight: 600;
  color: var(--ink-soft);
  background: transparent;
  border: 2px solid var(--line);
}

.btn--back {
  width: auto; min-height: 52px; padding: 8px 18px;
  font-size: 18px; color: var(--ink-soft);
  background: transparent; border: 2px solid var(--line);
  justify-self: start;
}

.btn--spike { min-height: 80px; }

.btn--danger { color: var(--bad); border-color: var(--bad); background: var(--card); }

.btn[disabled] { opacity: 0.55; cursor: default; }

/* --- Program cards (FR-5) --- */

.cards {
  display: grid; gap: 18px;
  grid-template-columns: repeat(auto-fill, minmax(260px, 1fr));
}

.card {
  display: grid; gap: 6px; align-content: start;
  min-height: 150px; padding: 20px;
  font: inherit; text-align: left;
  color: var(--card-text, #fff);
  background: var(--card-color, var(--primary));
  border: 4px solid rgba(0, 0, 0, 0.18);
  border-radius: var(--radius);
  cursor: pointer;
}

.card__name { font-size: 28px; font-weight: 700; line-height: 1.15; }
.card__meta { display: flex; align-items: center; gap: 8px; font-size: 17px; opacity: 0.95; }
.card__icon { width: 34px; height: 34px; margin-bottom: 4px; }

/* --- Fields --- */

.field { display: grid; gap: 8px; }
.field__label { font-size: 19px; font-weight: 600; }
.field__hint { font-size: 16px; color: var(--ink-soft); }

.field__input, .field__select {
  width: 100%; min-height: 56px; padding: 12px 16px;
  font: inherit; font-size: 20px;
  color: var(--ink); background: #fff;
  border: 3px solid var(--line); border-radius: 12px;
}

.field__input--big { min-height: var(--tap); font-size: 28px; letter-spacing: 0.06em; }

input[type="color"].field__input { min-height: 56px; padding: 6px; }
input[type="file"].field__input { padding: 10px; font-size: 17px; }

/* --- Messages (NFR-7: never color alone) --- */

.message {
  display: flex; align-items: flex-start; gap: 12px;
  padding: 16px 18px;
  font-size: 20px;
  background: var(--card);
  border: 3px solid var(--line); border-left-width: 10px;
  border-radius: 12px;
}

.message--good { color: #0e5c2f; background: var(--good-bg); border-color: var(--good); }
.message--bad { color: var(--bad); background: var(--bad-bg); border-color: var(--bad); }
.message__text { margin: 0; }
.message .icon { width: 30px; height: 30px; }

/* --- Dropzone (FR-12) --- */

.dropzone {
  display: flex; align-items: center; justify-content: center; gap: 14px;
  min-height: 130px; padding: 20px;
  font-size: 20px; color: var(--ink-soft); text-align: center;
  background: var(--card);
  border: 4px dashed var(--line); border-radius: var(--radius);
}

.dropzone--active { color: var(--primary); background: var(--good-bg); border-color: var(--primary); }

/* --- Saved screen --- */

.big-check {
  display: grid; place-items: center;
  width: 170px; height: 170px;
  color: #fff; background: var(--good);
  border-radius: 50%;
}

/* --- History (FR-19) --- */

.history { display: grid; gap: 14px; margin: 0; padding: 0; list-style: none; }

.history__item {
  display: grid; gap: 10px;
  padding: 18px;
  background: var(--card);
  border: 3px solid var(--line); border-radius: var(--radius);
}

.history__when { font-size: 21px; font-weight: 700; }
.history__who { font-size: 17px; color: var(--ink-soft); }

/* --- Coach screen --- */

.coach { display: grid; gap: 26px; }

.coach__section {
  display: grid; gap: 16px;
  padding: 20px;
  background: var(--card);
  border: 3px solid var(--line); border-radius: var(--radius);
}

.coach__section h3 { margin: 0; font-size: 24px; }

.coach__row { display: grid; gap: 16px; grid-template-columns: repeat(auto-fit, minmax(220px, 1fr)); }

.coach__inline { display: flex; flex-wrap: wrap; gap: 12px; }
.coach__inline .btn { width: auto; }

.preview { display: grid; gap: 0; overflow: hidden; border: 3px solid var(--line); border-radius: 12px; }
.preview__stripe { height: 8px; }
.preview__bar { padding: 14px 18px; font-size: 22px; font-weight: 700; }
.preview__buttons { display: flex; flex-wrap: wrap; gap: 12px; padding: 16px; background: var(--page); }
.preview__btn { padding: 14px 20px; font-size: 19px; font-weight: 700; border-radius: 12px; }

.subteam {
  display: grid; gap: 12px;
  padding: 16px;
  border: 3px solid var(--line); border-radius: 12px;
}

.subteam__head { display: flex; align-items: center; gap: 12px; }
.subteam__swatch { width: 34px; height: 34px; flex: none; border: 2px solid rgba(0,0,0,.25); border-radius: 8px; }
.subteam__name { font-size: 21px; font-weight: 700; }
.subteam__file { font-size: 16px; color: var(--ink-soft); word-break: break-all; }

.check-row { display: flex; align-items: center; gap: 12px; font-size: 19px; }
.check-row__state { font-weight: 700; }
.check-row__state--pass { color: var(--good); }
.check-row__state--fail { color: var(--bad); }

/* --- Dialog (FR-7, FR-14, FR-16) --- */

.ask {
  width: min(520px, calc(100vw - 32px));
  padding: 0;
  color: var(--ink);
  background: var(--card);
  border: none; border-radius: var(--radius);
  box-shadow: 0 18px 50px rgba(0, 0, 0, 0.3);
}

.ask::backdrop { background: rgba(0, 0, 0, 0.55); }
.ask__form { display: grid; gap: 16px; padding: 24px; }
.ask__title { margin: 0; font-size: 26px; }
.ask__text { margin: 0; font-size: 20px; }
.ask__buttons { display: grid; gap: 12px; }

/* --- Sign-in QR code (coach screen) --- */

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

.qr svg {
  max-width: 100%; height: auto;
  background: #fff;
  border: 1px solid var(--line); border-radius: 8px;
}

.qr__link {
  margin: 0; padding: 10px 12px;
  font-family: ui-monospace, Menlo, Consolas, monospace; font-size: 13px;
  word-break: break-all;
  background: var(--page); border-radius: 8px;
}

.field__hint--warn { font-weight: 600; color: var(--bad); }

/* --- The printable card --- */

.print-card { display: none; }

@media print {
  /* Only the card goes on the paper. */
  body > *:not(.print-card) { display: none !important; }

  /* White paper, black ink: the app's page color is not worth a toner cartridge. */
  html, body { background: #fff !important; color: #000 !important; }

  .print-card {
    display: grid !important; gap: 28px; place-content: center; justify-items: center;
    min-height: 88vh;
    padding: 24px; text-align: center;
  }

  .print-card__team { margin: 0; font-size: 34pt; }
  .print-card__how { margin: 0; font-size: 18pt; }
  .print-card svg { border: none; }

  @page { margin: 16mm; }
}

/* --- Busy overlay --- */

.busy {
  position: fixed; inset: 0; z-index: 20;
  display: grid; place-items: center;
  background: rgba(23, 32, 27, 0.6);
}

.busy__box {
  display: grid; gap: 14px; justify-items: center;
  min-width: 260px; padding: 28px 34px;
  background: var(--card); border-radius: var(--radius);
}

.busy__text { margin: 0; font-size: 22px; font-weight: 600; text-align: center; }

.spinner {
  width: 46px; height: 46px; margin: 0;
  border: 6px solid var(--line); border-top-color: var(--primary);
  border-radius: 50%;
  animation: spin 900ms linear infinite;
}

@keyframes spin { to { transform: rotate(360deg); } }

@media (prefers-reduced-motion: reduce) {
  .spinner { animation-duration: 3s; }
  .btn:active { transform: none; }
}

/* --- Footer / coach details (NFR-6) --- */

.app-footer { max-width: 900px; margin: 0 auto; padding: 0 20px 32px; }

.details { font-size: 16px; color: var(--ink-soft); }
.details summary { min-height: 44px; padding: 10px 0; cursor: pointer; }

.details__log {
  max-height: 260px; margin: 0; padding: 14px;
  overflow: auto;
  font-family: ui-monospace, Menlo, Consolas, monospace; font-size: 14px;
  white-space: pre-wrap; word-break: break-word;
  background: #1d2621; color: #e7ece8; border-radius: 10px;
}

/* --- Small screens and portrait tablets (NFR-2) --- */

@media (max-width: 620px) {
  body { font-size: 19px; }
  .app-header__title { font-size: 22px; }
  .screen__title { font-size: 26px; }
  .screen__title--huge { font-size: 36px; }
  .main { padding: 18px 14px 32px; }
  .cards { grid-template-columns: 1fr; }
}

@media (min-width: 1024px) {
  .btn--primary { font-size: 26px; }
}

@media (forced-colors: active) {
  .btn, .card, .message, .dropzone { border-color: CanvasText; }
}