/* A deliberately plain, kitchen-table look: flat felt, flat card faces, a
   cheap patterned card back.  No gradients or gloss — it should feel like
   playing a friend with an ordinary deck, not a casino app. */

:root {
  --felt: #2c7a63;
  --card-bg: #fdfdf7;
  --red: #c0392b;
  --black: #1b1b1b;
  --green: #1e7a45;
  --blue: #1a74d9;
  --back: #b23a3a;
  --gold: #f5c518;
  --card-w: 2.7rem;
  --card-h: 3.8rem;
}

* { box-sizing: border-box; }

body {
  margin: 0;
  font: 15px/1.4 system-ui, sans-serif;
  color: #f2f2f2;
  background: var(--felt);
  display: grid;
  grid-template-columns: 1fr minmax(0, 17rem);
  grid-template-rows: auto 1fr;
  grid-template-areas:
    "header header"
    "main   log";
  min-height: 100vh;
}

header {
  grid-area: header;
  padding: 0.5rem 1rem;
  display: flex;
  align-items: baseline;
  gap: 1rem;
  border-bottom: 1px solid rgba(0, 0, 0, 0.2);
}
h1 { font-size: 1.2rem; margin: 0; }
.score { opacity: 0.9; }

/* Quiet header controls — not game actions, so styled apart from the felt's
   gold action buttons.  `.difficulty` carries the auto margin that pushes
   this whole trailing group (itself and `.sort`) to the header's right edge. */
.difficulty,
.sort {
  font: inherit;
  font-size: 0.85rem;
  padding: 0.2rem 0.6rem;
  border: 1px solid rgba(255, 255, 255, 0.35);
  border-radius: 5px;
  background: transparent;
  color: inherit;
  cursor: pointer;
}
.difficulty { margin-left: auto; }
.difficulty:hover, .sort:hover { background: rgba(255, 255, 255, 0.12); }
.difficulty option { color: #222; }

main {
  grid-area: main;
  display: flex;
  flex-direction: column;
  align-items: center;
  gap: 1rem;
  padding: 1rem;
}

/* Opponent: a face-down fan sized to their hand. */
.opp { display: flex; flex-direction: column; align-items: center; gap: 0.3rem; }
.seat { opacity: 0.85; font-weight: 600; }
.fan { display: flex; }
.fan .card { margin-left: -1.5rem; box-shadow: -1px 1px 2px rgba(0, 0, 0, 0.3); }
.fan .card:first-child { margin-left: 0; }

/* Centre of the table: the concealed deck and the discard pile. */
.table {
  display: flex;
  gap: 2.5rem;
  align-items: center;
  justify-content: center;
  padding: 1.5rem 0;
  min-height: calc(var(--card-h) + 2rem);
}
.stack {
  position: relative;
  display: flex;
  align-items: center;
  justify-content: center;
  width: var(--card-w);
  height: var(--card-h);
}
.badge {
  position: absolute;
  bottom: -0.5rem;
  background: rgba(0, 0, 0, 0.65);
  color: var(--gold);
  font-size: 0.72rem;
  font-weight: 700;
  padding: 0.02rem 0.35rem;
  border-radius: 0.6rem;
}

/* Your hand: melds tinted, loose cards plain. */
.hand {
  display: flex;
  flex-wrap: wrap;
  align-items: flex-end;
  justify-content: center;
  gap: 0.6rem;
}
.group { display: flex; gap: 0.3rem; padding: 0.3rem; border-radius: 7px; }
.meld { background: rgba(120, 210, 140, 0.22); }

/* The bot's hand turned face up at the showdown; cards flip into view. */
.reveal { gap: 0.4rem; }
.reveal .card { animation: flip 0.3s ease both; }
.laidoff .card { opacity: 0.8; outline: 2px dashed var(--gold); outline-offset: -2px; }
@keyframes flip {
  from { transform: rotateY(90deg); opacity: 0; }
  to { transform: rotateY(0); opacity: 1; }
}

/* Cards. */
.card {
  width: var(--card-w);
  height: var(--card-h);
  background: var(--card-bg);
  border-radius: 6px;
  box-shadow: 0 1px 2px rgba(0, 0, 0, 0.4);
  display: flex;
  flex-direction: column;
  justify-content: space-between;
  padding: 0.2rem 0.3rem;
  font-weight: 600;
  flex: none;
}
.card .suit { align-self: flex-end; font-size: 1.2rem; }
.card.red { color: var(--red); }
.card.black { color: var(--black); }
.card.green { color: var(--green); }
.card.blue { color: var(--blue); }

.card.back {
  background-color: var(--back);
  background-image: repeating-linear-gradient(
    45deg, rgba(255, 255, 255, 0.18) 0 5px, transparent 5px 10px);
  border: 2px solid #fff;
}
.card.slot {
  background: transparent;
  border: 2px dashed rgba(255, 255, 255, 0.3);
  box-shadow: none;
}

.card.clickable { cursor: pointer; transition: transform 0.08s; }
.card.clickable:hover { transform: translateY(-0.4rem); }
.card.taken { opacity: 0.45; }

/* A card the player just drew, pulsed so it is easy to spot in the sorted hand. */
.justdrawn { animation: pulse 0.9s ease; }
@keyframes pulse {
  0%, 100% { box-shadow: 0 1px 2px rgba(0, 0, 0, 0.4); }
  30% { box-shadow: 0 0 0 3px var(--gold); }
}

/* A card mid-flight between zones. */
.ghost {
  position: fixed;
  margin: 0;
  z-index: 100;
  pointer-events: none;
  transition: transform 0.35s ease;
}

.actions {
  display: flex;
  align-items: center;
  gap: 0.6rem;
  flex-wrap: wrap;
  min-height: 2.4rem;
}
.dead { font-weight: 600; opacity: 0.9; }
.muted { opacity: 0.7; font-style: italic; }
.banner { font-size: 1.1rem; font-weight: 700; }
button {
  font: inherit;
  padding: 0.4rem 0.9rem;
  border: 0;
  border-radius: 6px;
  background: var(--gold);
  color: #222;
  cursor: pointer;
  font-weight: 600;
}
button:hover { background: #ffd83a; }

.log {
  grid-area: log;
  padding: 0.5rem 1rem;
  background: rgba(0, 0, 0, 0.18);
  overflow-y: auto;
  max-height: 100vh;
  font-size: 0.85rem;
}
.log h2 { font-size: 0.8rem; text-transform: uppercase; letter-spacing: 0.05em; opacity: 0.7; }
.log div { padding: 0.1rem 0; opacity: 0.9; }

/* Hidden by default: drop the panel and reclaim its grid column so `main`
   spans the full width instead of leaving a gutter. */
body.log-hidden {
  grid-template-columns: 1fr;
  grid-template-areas: "header" "main";
}
body.log-hidden .log { display: none; }

@media (max-width: 40rem) {
  body {
    grid-template-columns: 1fr;
    grid-template-rows: none;
    grid-template-areas: "header" "main" "log";
  }
  .log { max-height: 12rem; }
}