/* ===================================================================
   ANDMEBAASID JA AI — stiilileht
   Disainisuund: rahulik, akadeemiline "kataloogikaardi" esteetika.
   Paber-neutraalne taust, süvasinine tekst, vaoshoitud petrooleumsinine
   aktsentvärv, kolm vaikset kategooriavärvi (OTSI/KÜSI/MÕTLE), pitseri-
   moodi "TEHTUD" tempel täidetud ruutudel.
   =================================================================== */

:root {
  /* --- Värvid --- */
  --color-paper:        #F4F2EC;
  --color-paper-raised: #FFFFFF;
  --color-ink:          #1E2733;
  --color-ink-soft:     #4B5563;
  --color-line:         #DAD5C7;
  --color-line-strong:  #C2BCAA;

  --color-accent:       #1F6E76;   /* petrooleumsinine — peamine interaktiivne värv */
  --color-accent-dark:  #14515A;
  --color-accent-soft:  #E4EFEE;

  --color-gold:         #B0812A;   /* KÜSI */
  --color-gold-soft:    #F5EBD6;

  --color-plum:         #6E4577;   /* MÕTLE */
  --color-plum-soft:    #EFE5EF;

  --color-otsi:         var(--color-accent);
  --color-otsi-soft:    var(--color-accent-soft);
  --color-kysi:         var(--color-gold);
  --color-kysi-soft:    var(--color-gold-soft);
  --color-motle:        var(--color-plum);
  --color-motle-soft:   var(--color-plum-soft);

  --color-success:      #3E7D52;
  --color-success-soft: #E4F0E7;
  --color-retry:        #B0502F;
  --color-retry-soft:   #F6E7DF;

  /* --- Tüpograafia --- */
  --font-display: "Source Serif 4", Georgia, "Times New Roman", serif;
  --font-body: "Public Sans", -apple-system, BlinkMacSystemFont, "Segoe UI", sans-serif;

  /* --- Kuju --- */
  --radius-sm: 8px;
  --radius-md: 14px;
  --radius-lg: 22px;
  --shadow-card: 0 1px 2px rgba(30, 39, 51, 0.06), 0 8px 24px rgba(30, 39, 51, 0.07);
  --shadow-modal: 0 20px 60px rgba(20, 26, 33, 0.28);

  --focus-ring: 3px solid #2B7FE0;
}

/* ===================== RESET & ALUSED ===================== */

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

html { scroll-behavior: smooth; }

body {
  margin: 0;
  font-family: var(--font-body);
  color: var(--color-ink);
  background: var(--color-paper);
  background-image:
    radial-gradient(circle at 1px 1px, rgba(30,39,51,0.035) 1px, transparent 0);
  background-size: 22px 22px;
  line-height: 1.55;
  -webkit-font-smoothing: antialiased;
}

h1, h2, h3 { font-family: var(--font-display); font-weight: 600; margin: 0; color: var(--color-ink); }

p { margin: 0; }

button, input, select, textarea { font-family: inherit; font-size: 1rem; color: inherit; }

button { cursor: pointer; }

img, svg { display: block; max-width: 100%; }

.skip-link {
  position: absolute;
  left: -999px;
  top: 0;
  background: var(--color-ink);
  color: #fff;
  padding: 0.75rem 1.25rem;
  border-radius: 0 0 var(--radius-sm) 0;
  z-index: 1000;
}
.skip-link:focus {
  left: 0;
}

:focus-visible {
  outline: var(--focus-ring);
  outline-offset: 3px;
  border-radius: 4px;
}

/* ===================== PÄIS ===================== */

.site-header {
  border-bottom: 1px solid var(--color-line);
  background: var(--color-paper-raised);
}
.site-header__inner {
  max-width: 1080px;
  margin: 0 auto;
  padding: 0.9rem 1.5rem;
  display: flex;
  align-items: center;
  gap: 0.7rem;
}
.site-header__mark {
  font-family: var(--font-display);
  font-weight: 700;
  font-size: 1.1rem;
  color: var(--color-accent-dark);
  border: 1.5px solid var(--color-accent-dark);
  border-radius: 6px;
  padding: 0.1rem 0.45rem;
  letter-spacing: 0.02em;
}
.site-header__label {
  color: var(--color-ink-soft);
  font-size: 0.92rem;
}

/* ===================== ÜLDISED EKRAANID ===================== */

main { max-width: 1080px; margin: 0 auto; padding: 0 1.5rem 4rem; }

.screen { display: none; }
.screen.is-active { display: block; }

.btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: 0.5rem;
  border: 2px solid transparent;
  border-radius: 999px;
  padding: 0.85rem 1.7rem;
  font-weight: 600;
  font-size: 0.98rem;
  letter-spacing: 0.01em;
  transition: transform 0.12s ease, box-shadow 0.12s ease, background-color 0.12s ease, border-color 0.12s ease;
}
.btn:active { transform: translateY(1px); }

.btn--primary {
  background: var(--color-accent);
  color: #fff;
}
.btn--primary:hover { background: var(--color-accent-dark); }

.btn--secondary {
  background: var(--color-paper-raised);
  color: var(--color-accent-dark);
  border-color: var(--color-accent);
}
.btn--secondary:hover { background: var(--color-accent-soft); }

.btn--outline {
  background: transparent;
  color: var(--color-ink);
  border-color: var(--color-line-strong);
  text-decoration: none;
}
.btn--outline:hover { border-color: var(--color-ink); }

.btn--ghost {
  background: transparent;
  color: var(--color-ink-soft);
  border-color: transparent;
  text-decoration: underline;
  text-underline-offset: 3px;
}
.btn--ghost:hover { color: var(--color-ink); }

.btn--block { width: 100%; }
.btn--small { padding: 0.5rem 1rem; font-size: 0.88rem; }

.btn:disabled { opacity: 0.5; cursor: not-allowed; }

/* ===================== EKRAAN 1: AVALEHT ===================== */

.intro {
  display: grid;
  grid-template-columns: 1.15fr 0.85fr;
  gap: 3rem;
  padding-top: 3rem;
  align-items: start;
}

.intro__eyebrow {
  color: var(--color-accent-dark);
  font-weight: 600;
  font-size: 0.85rem;
  text-transform: none;
  margin-bottom: 0.6rem;
}

.intro__title {
  font-size: clamp(2.4rem, 5vw, 3.4rem);
  line-height: 1.05;
  margin-bottom: 0.9rem;
}

.intro__subtitle {
  font-size: 1.15rem;
  color: var(--color-ink-soft);
  margin-bottom: 1.4rem;
}

.intro__lede {
  font-size: 1.05rem;
  color: var(--color-ink);
  max-width: 46ch;
}
.intro__lede--secondary {
  margin-top: 0.9rem;
  color: var(--color-ink-soft);
}

.setup-card {
  background: var(--color-paper-raised);
  border: 1px solid var(--color-line);
  border-radius: var(--radius-lg);
  box-shadow: var(--shadow-card);
  padding: 1.8rem;
  display: flex;
  flex-direction: column;
  gap: 1.3rem;
}

.setup-card__title {
  font-size: 1.15rem;
  border-bottom: 1px solid var(--color-line);
  padding-bottom: 0.9rem;
}

.field { display: flex; flex-direction: column; gap: 0.5rem; border: none; padding: 0; margin: 0; }

.field label, .field legend {
  font-weight: 600;
  font-size: 0.95rem;
  padding: 0;
}

.required { color: var(--color-retry); }

select {
  padding: 0.7rem 0.9rem;
  border: 1.5px solid var(--color-line-strong);
  border-radius: var(--radius-sm);
  background: var(--color-paper-raised);
  appearance: none;
  background-image: linear-gradient(45deg, transparent 50%, var(--color-ink-soft) 50%), linear-gradient(135deg, var(--color-ink-soft) 50%, transparent 50%);
  background-position: calc(100% - 18px) center, calc(100% - 13px) center;
  background-size: 5px 5px, 5px 5px;
  background-repeat: no-repeat;
}
select:invalid { color: var(--color-ink-soft); }

.radio-row { display: flex; flex-direction: column; gap: 0.6rem; }

.radio-option {
  display: flex;
  align-items: center;
  gap: 0.6rem;
  font-weight: 400;
  padding: 0.55rem 0.75rem;
  border: 1.5px solid var(--color-line);
  border-radius: var(--radius-sm);
  cursor: pointer;
  transition: border-color 0.12s ease, background-color 0.12s ease;
}
.radio-option:has(input:checked) {
  border-color: var(--color-accent);
  background: var(--color-accent-soft);
}
.radio-option input { accent-color: var(--color-accent); width: 18px; height: 18px; }

.field__error {
  color: var(--color-retry);
  font-size: 0.85rem;
  font-weight: 500;
}

/* ---- Partnerid ---- */

.partners { margin-top: 4rem; }
.partners__title {
  font-size: 1.1rem;
  color: var(--color-ink-soft);
  text-align: center;
  margin-bottom: 1.4rem;
}
.partners__grid {
  list-style: none;
  margin: 0;
  padding: 0;
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  gap: 1rem;
}
.partner-logo {
  display: flex;
  align-items: center;
  justify-content: center;
  text-align: center;
  min-height: 104px;
  background: var(--color-paper-raised);
  border: 1px solid var(--color-line);
  border-radius: var(--radius-md);
  padding: 1.1rem;
  font-size: 0.82rem;
  font-weight: 600;
  color: var(--color-ink-soft);
}
.partner-logo img { max-height: 68px; max-width: 92%; width: auto; height: auto; object-fit: contain; }

/* ===================== EKRAAN 2: BINGO LAUD ===================== */

.board-header {
  padding-top: 2.5rem;
  display: flex;
  flex-wrap: wrap;
  align-items: flex-end;
  justify-content: space-between;
  gap: 0.8rem;
  margin-bottom: 1.8rem;
}
.board-header__eyebrow {
  color: var(--color-accent-dark);
  font-weight: 600;
  font-size: 0.85rem;
  margin-bottom: 0.3rem;
}
.board-header__title { font-size: clamp(1.7rem, 3.5vw, 2.3rem); }
.board-header__hint { color: var(--color-ink-soft); font-size: 0.95rem; max-width: 32ch; }

.bingo-board {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: clamp(0.6rem, 2vw, 1.1rem);
  max-width: 640px;
  margin: 0 auto;
}

.bingo-cell {
  position: relative;
  aspect-ratio: 1 / 1;
  display: flex;
  flex-direction: column;
  align-items: center;
  justify-content: center;
  gap: 0.4rem;
  padding: 0.7rem;
  text-align: center;
  background: var(--color-paper-raised);
  border: 1.5px solid var(--color-line);
  border-radius: var(--radius-md);
  box-shadow: var(--shadow-card);
  overflow: hidden;
  transition: transform 0.12s ease, box-shadow 0.12s ease, border-color 0.12s ease;
}
.bingo-cell:hover:not(:disabled) {
  transform: translateY(-2px);
  border-color: var(--color-accent);
}
.bingo-cell::before {
  /* Kategooria tuvastusriba */
  content: "";
  position: absolute;
  top: 0; left: 0; right: 0;
  height: 5px;
  background: var(--cell-color, var(--color-line-strong));
}
.bingo-cell[data-category="OTSI"] { --cell-color: var(--color-otsi); }
.bingo-cell[data-category="KÜSI"] { --cell-color: var(--color-kysi); }
.bingo-cell[data-category="MÕTLE"] { --cell-color: var(--color-motle); }

.bingo-cell__category {
  font-size: 0.72rem;
  font-weight: 700;
  letter-spacing: 0.04em;
  color: var(--cell-color, var(--color-ink-soft));
}
.bingo-cell__label {
  font-size: 0.92rem;
  font-weight: 600;
  line-height: 1.3;
  color: var(--color-ink);
}

.bingo-cell.is-solved {
  background: var(--color-success-soft);
  border-color: var(--color-success);
  cursor: default;
}
.bingo-cell.is-solved .bingo-cell__label,
.bingo-cell.is-solved .bingo-cell__category { opacity: 0; }

.bingo-cell__stamp {
  display: none;
  position: absolute;
  inset: 0;
  align-items: center;
  justify-content: center;
  flex-direction: column;
  gap: 0.15rem;
  color: var(--color-success);
  transform: rotate(-8deg);
}
.bingo-cell.is-solved .bingo-cell__stamp { display: flex; }
.bingo-cell__stamp-ring {
  width: 56%;
  aspect-ratio: 1;
  border: 2.5px solid var(--color-success);
  border-radius: 999px;
  display: flex;
  align-items: center;
  justify-content: center;
  font-family: var(--font-display);
  font-weight: 700;
  font-size: 0.8rem;
  letter-spacing: 0.04em;
}

.board-footer { text-align: center; margin-top: 2.2rem; }

/* ===================== MODAAL: KÜSIMUS ===================== */

.modal-overlay {
  position: fixed;
  inset: 0;
  background: rgba(20, 22, 26, 0.55);
  display: flex;
  align-items: center;
  justify-content: center;
  padding: 1rem;
  z-index: 500;
}
.modal-overlay[hidden] { display: none; }

.modal {
  position: relative;
  background: var(--color-paper-raised);
  border-radius: var(--radius-lg);
  box-shadow: var(--shadow-modal);
  max-width: 620px;
  width: 100%;
  max-height: min(88vh, 760px);
  overflow-y: auto;
  padding: 2.2rem;
}

.modal__close {
  position: absolute;
  top: 1rem;
  right: 1rem;
  width: 36px;
  height: 36px;
  border-radius: 999px;
  border: 1.5px solid var(--color-line);
  background: var(--color-paper-raised);
  font-size: 1rem;
  line-height: 1;
  color: var(--color-ink-soft);
}
.modal__close:hover { background: var(--color-paper); color: var(--color-ink); }

.modal__category {
  font-weight: 700;
  font-size: 0.78rem;
  letter-spacing: 0.04em;
  color: var(--color-accent-dark);
  margin-bottom: 0.4rem;
}
.modal__title { font-size: 1.5rem; margin-bottom: 1rem; padding-right: 2rem; }
.modal__body { font-size: 1.02rem; color: var(--color-ink); }
.modal__question-text {
  white-space: pre-line;
  margin-bottom: 1.3rem;
  background: var(--color-paper);
  border: 1px solid var(--color-line);
  border-radius: var(--radius-sm);
  padding: 0.9rem 1.1rem;
}

/* Vastusevariandid (multiple-choice / fill-blank / true-false) */
.answer-list { list-style: none; margin: 0; padding: 0; display: flex; flex-direction: column; gap: 0.6rem; }
.answer-option {
  display: block;
}
.answer-option label {
  display: flex;
  align-items: center;
  gap: 0.75rem;
  padding: 0.75rem 1rem;
  border: 1.5px solid var(--color-line);
  border-radius: var(--radius-sm);
  cursor: pointer;
  transition: border-color 0.12s ease, background-color 0.12s ease;
}
.answer-option label:hover { border-color: var(--color-accent); }
.answer-option input { accent-color: var(--color-accent); width: 18px; height: 18px; flex-shrink: 0; }
.answer-option:has(input:checked) label {
  border-color: var(--color-accent);
  background: var(--color-accent-soft);
  font-weight: 600;
}
.answer-option:has(input:disabled) label { cursor: default; }

/* Järjestamise (drag-and-drop) ülesanne */
.ordering-list {
  list-style: none;
  margin: 0 0 0.5rem;
  padding: 0;
  display: flex;
  flex-direction: column;
  gap: 0.55rem;
}
.ordering-item {
  display: flex;
  align-items: center;
  gap: 0.7rem;
  padding: 0.75rem 0.9rem;
  background: var(--color-paper);
  border: 1.5px solid var(--color-line-strong);
  border-radius: var(--radius-sm);
  cursor: grab;
}
.ordering-item:focus-visible { outline: var(--focus-ring); }
.ordering-item.is-dragging { opacity: 0.5; }
.ordering-item__handle { color: var(--color-ink-soft); font-size: 1.1rem; user-select: none; }
.ordering-item__text { flex: 1; }
.ordering-item__buttons { display: flex; gap: 0.3rem; }
.ordering-item__buttons button {
  background: var(--color-paper-raised);
  border: 1.5px solid var(--color-line);
  border-radius: 6px;
  width: 30px;
  height: 30px;
  font-size: 0.9rem;
  color: var(--color-ink-soft);
}
.ordering-item__buttons button:hover { border-color: var(--color-accent); color: var(--color-accent-dark); }
.ordering-hint-text { font-size: 0.85rem; color: var(--color-ink-soft); margin-bottom: 0.9rem; }

.modal__feedback { margin-top: 1.1rem; }
.feedback-msg {
  border-radius: var(--radius-sm);
  padding: 0.9rem 1.1rem;
  font-weight: 600;
  margin-bottom: 0.8rem;
  display: flex;
  align-items: center;
  gap: 0.6rem;
}
.feedback-msg--wrong { background: var(--color-retry-soft); color: var(--color-retry); }
.feedback-msg--correct { background: var(--color-success-soft); color: var(--color-success); }

.hint-box, .fact-box {
  border: 1px dashed var(--color-line-strong);
  border-radius: var(--radius-sm);
  padding: 0.9rem 1.1rem;
  font-size: 0.95rem;
  margin-top: 0.7rem;
}
.hint-box__label, .fact-box__label {
  display: block;
  font-weight: 700;
  margin-bottom: 0.3rem;
}

.modal__actions { margin-top: 1.4rem; display: flex; justify-content: flex-end; gap: 0.7rem; }
.modal__actions--split { justify-content: center; flex-wrap: wrap; }

.modal--celebrate { text-align: center; max-width: 460px; }
.modal--celebrate .modal__title { font-size: 2rem; padding-right: 0; }

/* ===================== EKRAAN 3: LÕPUEKRAAN ===================== */

.end-card {
  max-width: 620px;
  margin: 3rem auto 0;
  background: var(--color-paper-raised);
  border: 1px solid var(--color-line);
  border-radius: var(--radius-lg);
  box-shadow: var(--shadow-card);
  padding: 2.4rem;
  text-align: center;
}
.end-card__eyebrow { color: var(--color-accent-dark); font-weight: 600; font-size: 0.85rem; margin-bottom: 0.5rem; }
.end-card__title { font-size: 2rem; margin-bottom: 0.7rem; }
.end-card__result { font-size: 1.05rem; color: var(--color-ink-soft); margin-bottom: 0.4rem; }
.end-card__score { font-size: 0.95rem; color: var(--color-ink-soft); margin-bottom: 1.6rem; }

.feedback-block, .prize-block {
  border-top: 1px solid var(--color-line);
  margin-top: 2rem;
  padding-top: 2rem;
  text-align: left;
}
.feedback-block h2, .prize-block h2 { font-size: 1.15rem; margin-bottom: 0.8rem; text-align: center; }
.prize-block p { color: var(--color-ink-soft); font-size: 0.92rem; margin-bottom: 1.1rem; text-align: center; }
.prize-block { text-align: center; }

.star-rating { display: flex; justify-content: center; gap: 0.35rem; margin-bottom: 1.3rem; }
.star {
  background: none;
  border: none;
  font-size: 2rem;
  line-height: 1;
  color: var(--color-line-strong);
  padding: 0.1rem;
  transition: color 0.1s ease, transform 0.1s ease;
}
.star:hover { transform: scale(1.1); }
.star.is-filled { color: var(--color-gold); }

#feedback-form label { display: block; font-weight: 600; margin-bottom: 0.5rem; }
#feedback-form textarea {
  width: 100%;
  border: 1.5px solid var(--color-line-strong);
  border-radius: var(--radius-sm);
  padding: 0.8rem;
  resize: vertical;
  margin-bottom: 0.9rem;
}
.feedback-thanks { color: var(--color-success); font-weight: 600; margin-top: 0.8rem; text-align: center; }

/* ===================== VISUALLY HIDDEN UTIL ===================== */
.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;
}

/* ===================== RESPONSIIVSUS ===================== */

@media (max-width: 860px) {
  .intro { grid-template-columns: 1fr; gap: 2.2rem; padding-top: 2rem; }
  .partners__grid { grid-template-columns: repeat(2, 1fr); }
}

@media (max-width: 560px) {
  main { padding: 0 1rem 3rem; }
  .site-header__inner { padding: 0.8rem 1rem; }
  .intro__title { font-size: 2.1rem; }
  .setup-card { padding: 1.3rem; }
  .bingo-board { gap: 0.5rem; }
  .bingo-cell { border-radius: 10px; padding: 0.4rem; }
  .bingo-cell__label { font-size: 0.76rem; }
  .bingo-cell__category { font-size: 0.62rem; }
  .modal { padding: 1.4rem; border-radius: var(--radius-md); }
  .modal__title { font-size: 1.25rem; }
  .end-card { padding: 1.5rem; }
}

/* ===================== VÄHENDATUD LIIKUMISE EELISTUS ===================== */
@media (prefers-reduced-motion: reduce) {
  html { scroll-behavior: auto; }
  * { transition-duration: 0.001ms !important; animation-duration: 0.001ms !important; }
}