/* Tetarti — dusk over the dunes.
   Moody sea-and-sand palette with a low sun and pyramid silhouettes. */

:root {
  --sky-1: #0d2b34;      /* deep petrol dusk */
  --sky-2: #17505a;      /* teal near the horizon */
  --sea: #123c42;
  --sand-1: #4d3d28;     /* dark shoreline sand */
  --sand-2: #2b2317;
  --sun: #e8b45e;        /* low golden sun */
  --sun-soft: rgba(232, 180, 94, 0.4);
  --terracotta: #b8452f; /* red suits */
  --ink: #2a251c;        /* black suits — warm ink */
  --lapis: #3b5bb5;      /* jokers */
  --papyrus: #f4e9cf;    /* card faces */
  --panel: rgba(8, 26, 29, 0.84);
  --panel-edge: rgba(232, 180, 94, 0.22);
  --text: #ece4d2;
  --cw: 96px;  --ch: 134px;   /* hand cards */
  --cw-sm: 76px; --ch-sm: 106px; /* board & center */
  --cw-xs: 44px; --ch-xs: 62px; /* opponent board */
  --step: 34px;    /* vertical offset between stacked board cards */
  --step-xs: 19px;
}

* { margin: 0; padding: 0; box-sizing: border-box; }

html, body { min-height: 100%; }

body {
  font-family: -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto, Helvetica, Arial, sans-serif;
  color: var(--text);
  background: linear-gradient(180deg,
    var(--sky-1) 0%, var(--sky-2) 30%,
    #7c5030 42%, #a06a3c 46%,      /* sunset band */
    var(--sea) 52%, #10333a 62%,   /* the sea */
    var(--sand-1) 74%, var(--sand-2) 100%) fixed;
  -webkit-tap-highlight-color: transparent;
  user-select: none;
}

/* ---------- backdrop scene ---------- */

.scene { position: fixed; inset: 0; z-index: -1; pointer-events: none; overflow: hidden; }

.scene .sun {
  position: absolute;
  top: 7%; left: 76%;
  width: 110px; height: 110px;
  border-radius: 50%;
  background: radial-gradient(circle, #f6d38c 0 40%, var(--sun) 70%, rgba(232,180,94,0));
  box-shadow: 0 0 90px 40px rgba(232, 180, 94, 0.25);
  opacity: 0.85;
}

.scene .pyramid {
  position: absolute;
  bottom: 52%;
  left: 12%;
  width: 0; height: 0;
  border-left: 170px solid transparent;
  border-right: 170px solid transparent;
  border-bottom: 130px solid rgba(16, 14, 10, 0.5);
}
.scene .pyramid.far {
  left: 33%;
  border-left-width: 100px;
  border-right-width: 100px;
  border-bottom-width: 76px;
  opacity: 0.7;
}

.scene .sea {
  position: absolute;
  top: 48%; height: 14%; width: 100%;
  background: linear-gradient(180deg, rgba(232,180,94,0.10), transparent 60%);
}
.scene .sand { display: none; }

#app { max-width: 1200px; margin: 0 auto; padding: 0 14px 30px; }

/* ---------- header ---------- */

header {
  display: flex;
  align-items: center;
  gap: 16px;
  flex-wrap: wrap;
  padding: 12px 4px 10px;
  border-bottom: 1px solid var(--panel-edge);
  margin-bottom: 10px;
}

.brand {
  font-family: Georgia, "Times New Roman", serif;
  font-size: 26px;
  letter-spacing: 6px;
  color: var(--sun);
  text-shadow: 0 1px 8px rgba(0, 0, 0, 0.55);
}
.brand .pyr { font-size: 0.72em; margin-right: 10px; vertical-align: 2px; color: #c98d4f; }
.brand.xl { font-size: 42px; margin-bottom: 6px; }

.strong-badge {
  font-size: 13px;
  background: rgba(6, 20, 22, 0.45);
  border: 1px solid var(--sun-soft);
  border-radius: 999px;
  padding: 5px 12px;
  color: var(--sun);
}
.strong-badge b { color: var(--text); }

.scores { margin-left: auto; font-size: 14px; display: flex; align-items: center; gap: 8px; }
.score { opacity: 0.65; padding: 4px 10px; border-radius: 999px; }
.score.turn {
  opacity: 1;
  background: rgba(232, 180, 94, 0.16);
  border: 1px solid var(--sun-soft);
}
.score b { color: var(--sun); }
.score-sep { opacity: 0.4; }

.header-btns { display: flex; gap: 8px; }

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

.card {
  width: var(--cw);
  height: var(--ch);
  border-radius: 9px;
  background: var(--papyrus);
  border: 1px solid #c4b48b;
  box-shadow: 0 2px 7px rgba(0, 0, 0, 0.45);
  position: relative;
  color: var(--ink);
  flex-shrink: 0;
  font-weight: 700;
}
.card.red { color: var(--terracotta); }
.card.sm { width: var(--cw-sm); height: var(--ch-sm); border-radius: 7px; }
.card.xs { width: var(--cw-xs); height: var(--ch-xs); border-radius: 5px; box-shadow: 0 1px 3px rgba(0,0,0,.4); }

.corner {
  position: absolute;
  font-size: 19px;
  line-height: 1;
  display: flex;
  flex-direction: column;
  align-items: center;
}
.corner span { font-size: 17px; }
.corner.tl { top: 6px; left: 8px; }
.corner.br { bottom: 6px; right: 8px; transform: rotate(180deg); }
/* stacked board cards: rank+suit side by side so both peek out */
.card.sm .corner { font-size: 15px; flex-direction: row; gap: 2px; }
.card.sm .corner span { font-size: 14px; }
.card.xs .corner { font-size: 12px; flex-direction: row; gap: 1px; }
.card.xs .corner span { font-size: 11px; }
.card.sm .corner.br, .card.xs .corner.br { display: none; }

.pip {
  position: absolute;
  inset: 0;
  display: grid;
  place-items: center;
  font-size: 46px;
}
.card.sm .pip { font-size: 34px; }
.card.xs .pip { font-size: 20px; }

.card.joker { color: var(--lapis); }
.card.joker .pip { font-size: 40px; }
.joker-label {
  position: absolute;
  bottom: 20px;
  width: 100%;
  text-align: center;
  font-size: 10px;
  letter-spacing: 2px;
}
.card.sm .joker-label, .card.xs .joker-label { display: none; }

.ace-dir {
  position: absolute;
  bottom: 4px;
  width: 100%;
  text-align: center;
  font-size: 9px;
  letter-spacing: 1px;
  text-transform: uppercase;
  opacity: 0.75;
}

/* card back: a pyramid under a small sun, on papyrus sand */
.card.back {
  background:
    radial-gradient(circle at 50% 22%, var(--sun) 0 14%, rgba(232,180,94,0.35) 20%, transparent 30%),
    linear-gradient(to top right, #7d5b34 49.6%, transparent 50%) no-repeat 0 100% / 50% 58%,
    linear-gradient(to top left, #7d5b34 49.6%, transparent 50%) no-repeat 100% 100% / 50% 58%,
    #cfb083;
  border: 2px solid #8a6438;
}

.card.outline {
  background: rgba(244, 233, 207, 0.05);
  border: 1.5px dashed rgba(244, 233, 207, 0.3);
  box-shadow: none;
}
.ghost-suit {
  position: absolute;
  inset: 0;
  display: grid;
  place-items: center;
  font-size: 24px;
  opacity: 0.35;
}
.ghost-suit.red { color: #f3a58c; }
.ghost-suit.black { color: #ded5c0; }

/* interactive states */
.clickable { cursor: pointer; }
[data-act] { cursor: pointer; }

.target.glow, .card.glow {
  outline: 2px solid var(--sun);
  outline-offset: 2px;
  animation: pulse 1.2s ease-in-out infinite;
}
@keyframes pulse {
  0%, 100% { box-shadow: 0 0 4px 1px var(--sun-soft); }
  50% { box-shadow: 0 0 14px 4px var(--sun-soft); }
}

/* Informational halos: "look here" (just drawn / just played), distinct from
   .glow which marks an actionable target. box-shadow only — never transform,
   so it doesn't fight the translateX(-50%) centering on stacked board cards. */
.card.halo {
  animation: cardHaloPulse 1.3s ease-in-out infinite;
}
@keyframes cardHaloPulse {
  0%, 100% { box-shadow: 0 0 0 2px var(--sun), 0 0 14px 3px var(--sun-soft); }
  50% { box-shadow: 0 0 0 2px var(--sun), 0 0 24px 7px rgba(232, 180, 94, 0.6); }
}

/* A completed Biriba: a bigger initial flash, then a thicker, slower pulse. */
.card.halo-complete {
  z-index: 4;
  animation: cardHaloFlash 0.8s ease-out 1, cardHaloBig 1.5s ease-in-out infinite 0.8s;
}
@keyframes cardHaloFlash {
  0% { box-shadow: 0 0 0 3px var(--sun), 0 0 18px 5px var(--sun-soft); }
  35% { box-shadow: 0 0 0 8px var(--sun), 0 0 64px 22px rgba(232, 180, 94, 0.8); }
  100% { box-shadow: 0 0 0 5px var(--sun), 0 0 34px 10px rgba(232, 180, 94, 0.5); }
}
@keyframes cardHaloBig {
  0%, 100% { box-shadow: 0 0 0 5px var(--sun), 0 0 28px 8px rgba(232, 180, 94, 0.45); }
  50% { box-shadow: 0 0 0 5px var(--sun), 0 0 46px 15px rgba(232, 180, 94, 0.7); }
}

/* ---------- opponent strip ---------- */

.opp-area {
  background: var(--panel);
  border: 1px solid var(--panel-edge);
  border-radius: 14px;
  padding: 10px 14px;
  margin-bottom: 12px;
}

.opp-info { display: flex; align-items: center; gap: 14px; font-size: 13px; }
.pname { font-weight: 700; letter-spacing: 0.5px; }
.opp-hand { display: flex; align-items: center; }
.opp-hand .card { margin-left: -32px; }
.opp-hand .card:first-child { margin-left: 0; }
.hand-count { margin-left: 10px; opacity: 0.7; }
.opp-done { margin-left: auto; opacity: 0.7; }

.thinking { font-size: 12px; color: var(--sun); font-style: italic; }
.thinking .dots::after {
  content: '…';
  animation: dots 1.4s steps(3) infinite;
}
@keyframes dots { 0% { content: '.'; } 50% { content: '..'; } 100% { content: '…'; } }

.recap-line { font-size: 12px; opacity: 0.75; padding: 4px 0 2px; }

.opp-area .board.mini { margin-top: 8px; }

/* ---------- boards ---------- */

.board {
  display: grid;
  grid-template-columns: repeat(4, minmax(0, 1fr));
  gap: 12px;
}

.column {
  min-width: 0;
  background: rgba(244, 233, 207, 0.05);
  border: 1px solid rgba(244, 233, 207, 0.1);
  border-radius: 12px;
  padding: 8px;
  transition: background 0.15s;
}
.column.target { background: rgba(232, 180, 94, 0.10); }
.column.complete { border-color: var(--sun); box-shadow: 0 0 12px rgba(232, 180, 94, 0.25) inset; }

.col-head {
  display: flex;
  align-items: center;
  gap: 6px;
  font-size: 13px;
  margin-bottom: 7px;
}
.col-head .count { margin-left: auto; opacity: 0.65; font-size: 12px; }
.strong-star { color: var(--sun); }

.suit-chip { font-size: 16px; }
.suit-chip.red { color: #ff9d84; }
.suit-chip.black { color: #efe8d8; }

.stack { position: relative; height: calc(var(--ch-sm) + 6 * var(--step)); }
.column.xs .stack { height: calc(var(--ch-xs) + 6 * var(--step-xs)); }
.stack .card { position: absolute; left: 50%; transform: translateX(-50%); }

.empty-slot {
  position: absolute;
  left: 50%;
  transform: translateX(-50%);
  width: var(--cw-sm);
  height: var(--ch-sm);
  border: 1.5px dashed rgba(244, 233, 207, 0.25);
  border-radius: 7px;
  display: grid;
  place-items: center;
  font-size: 22px;
  opacity: 0.5;
}
.column.xs .empty-slot { width: var(--cw-xs); height: var(--ch-xs); font-size: 15px; }
.empty-slot.red { color: #f3a58c; }

.col-foot { font-size: 11px; opacity: 0.85; margin-top: 6px; text-align: center; min-height: 16px; }

.tag {
  display: inline-block;
  font-size: 10px;
  font-weight: 700;
  letter-spacing: 1px;
  border-radius: 4px;
  padding: 1px 6px;
}
.tag.done { background: var(--sun); color: #2b2005; }
.tag.wild { background: var(--lapis); color: #fff; }

/* ---------- center strip ---------- */

.center-area {
  display: flex;
  align-items: flex-start;
  justify-content: center;
  gap: 14px;
  padding: 12px 8px;
  margin-bottom: 12px;
  background: var(--panel);
  border: 1px solid var(--panel-edge);
  border-radius: 14px;
  transition: box-shadow 0.2s, border-color 0.2s;
}

/* Draw phase: halo the whole center strip so it's obvious where to look. */
.center-area.draw-ready {
  border-color: var(--sun);
  animation: centerHalo 1.5s ease-in-out infinite;
}
@keyframes centerHalo {
  0%, 100% { box-shadow: 0 0 20px 4px rgba(232, 180, 94, 0.25), 0 0 0 1px var(--sun-soft) inset; }
  50% { box-shadow: 0 0 44px 12px rgba(232, 180, 94, 0.45), 0 0 0 1px var(--sun) inset; }
}

.pile { display: flex; flex-direction: column; align-items: center; gap: 6px; }
.pile-label { font-size: 11px; opacity: 0.75; display: flex; gap: 4px; align-items: center; }
.pile-sep { width: 1px; align-self: stretch; background: rgba(244, 233, 207, 0.14); }

/* ---------- action bar + hand ---------- */

.hand-area { margin-top: 14px; }

.prompt {
  display: flex;
  align-items: center;
  justify-content: center;
  gap: 12px;
  flex-wrap: wrap;
  text-align: center;
  font-size: 14px;
  background: rgba(6, 20, 22, 0.78);
  border: 1px solid var(--sun-soft);
  border-radius: 999px;
  padding: 8px 18px;
  margin: 0 auto 12px;
  max-width: 760px;
  min-height: 20px;
}
.prompt b { color: var(--sun); }
.bar-btns { display: inline-flex; gap: 8px; }

.hand-row { display: flex; align-items: center; gap: 16px; }
.pname.mine { font-size: 13px; opacity: 0.85; width: 90px; text-align: right; }

.hand { display: flex; padding-top: 18px; flex: 1; flex-wrap: wrap; row-gap: 20px; }
.hand .card.in-fan { margin-left: -30px; transition: transform 0.12s, box-shadow 0.12s; }
.hand .card.in-fan:first-child { margin-left: 0; }
.hand .card.clickable:hover { transform: translateY(-12px); z-index: 2; }
.hand .card.selected {
  transform: translateY(-20px);
  outline: 2.5px solid var(--sun);
  z-index: 3;
  box-shadow: 0 8px 18px rgba(0, 0, 0, 0.5);
}
.hand .card.resting { opacity: 0.92; }

/* ---------- buttons ---------- */

.btn {
  font: inherit;
  font-weight: 600;
  border: none;
  border-radius: 999px;
  padding: 11px 22px;
  cursor: pointer;
  transition: transform 0.1s, filter 0.15s;
}
.btn:hover { filter: brightness(1.1); }
.btn:active { transform: scale(0.97); }

.btn.primary {
  background: linear-gradient(180deg, #f0c26a, #c99640);
  color: #2b2005;
  box-shadow: 0 2px 8px rgba(0, 0, 0, 0.4);
}

.btn.ghost {
  background: rgba(244, 233, 207, 0.08);
  border: 1px solid rgba(244, 233, 207, 0.28);
  color: var(--text);
}
.btn.small { padding: 6px 14px; font-size: 12px; }

.btn.suit-btn {
  font-size: 22px;
  width: 44px;
  height: 44px;
  padding: 0;
  border-radius: 12px;
  background: var(--papyrus);
}
.btn.suit-btn.small { width: 38px; height: 38px; font-size: 19px; }
.btn.suit-btn.red { color: var(--terracotta); }
.btn.suit-btn.black { color: var(--ink); }

.btn-row { display: flex; gap: 12px; justify-content: center; flex-wrap: wrap; margin-top: 16px; }

/* ---------- overlays (start / game over / rules) ---------- */

.overlay {
  position: fixed;
  inset: 0;
  display: grid;
  place-items: center;
  background: rgba(5, 15, 17, 0.8);
  z-index: 50;
  padding: 18px;
}

.panel {
  background: linear-gradient(180deg, #173c40, #0d272b);
  border: 1px solid var(--sun-soft);
  border-radius: 18px;
  padding: 30px 34px;
  max-width: 500px;
  width: 100%;
  text-align: center;
  box-shadow: 0 18px 50px rgba(0, 0, 0, 0.6);
}
.panel h2 { font-family: Georgia, serif; font-weight: 600; letter-spacing: 1px; margin-bottom: 14px; line-height: 1.35; }
.panel p { font-size: 14px; line-height: 1.55; margin-bottom: 10px; }
.panel .btn { margin-top: 8px; }

.gold { color: var(--sun); }
.tagline { opacity: 0.85; font-size: 14px; margin-bottom: 18px; line-height: 1.6; }

.name-inputs { display: flex; gap: 10px; justify-content: center; margin-bottom: 6px; }
.name-inputs input {
  font: inherit;
  padding: 10px 14px;
  border-radius: 10px;
  border: 1px solid rgba(244, 233, 207, 0.28);
  background: rgba(5, 15, 17, 0.4);
  color: var(--text);
  width: 170px;
  text-align: center;
}
.name-inputs input:focus { outline: 2px solid var(--sun-soft); }

.score-table {
  margin: 14px auto 10px;
  border-collapse: collapse;
  font-size: 14px;
  min-width: 300px;
}
.score-table th, .score-table td { padding: 7px 14px; }
.score-table th { font-size: 11px; text-transform: uppercase; letter-spacing: 1px; opacity: 0.65; }
.score-table tr + tr { border-top: 1px solid rgba(244, 233, 207, 0.12); }
.score-table td:first-child { text-align: left; }
.winner-row td { color: var(--sun); }

.rules-body { text-align: left; max-height: 55vh; overflow-y: auto; padding-right: 6px; }
.rules-body b { color: var(--sun); }

/* ---------- small screens ---------- */

@media (max-width: 760px) {
  :root {
    --cw: 70px;  --ch: 98px;
    --cw-sm: 58px; --ch-sm: 80px;
    --cw-xs: 34px; --ch-xs: 48px;
    --step: 26px;
    --step-xs: 15px;
  }
  #app { padding: 0 8px 24px; }
  .board { gap: 7px; }
  .column { padding: 5px; }
  .col-foot { font-size: 10px; }
  .opp-info { flex-wrap: wrap; }
  .pip { font-size: 32px; }
  .card.sm .pip { font-size: 24px; }
  .hand .card.in-fan { margin-left: -22px; }
  .pname.mine { display: none; }
  .brand { font-size: 20px; letter-spacing: 4px; }
  .scores { font-size: 12px; }
  .center-area { gap: 8px; flex-wrap: wrap; }
  .panel { padding: 22px 18px; }
  .scene .pyramid { border-left-width: 100px; border-right-width: 100px; border-bottom-width: 78px; }
  .scene .pyramid.far { border-left-width: 60px; border-right-width: 60px; border-bottom-width: 46px; }
}