:root {
  --bg: #0f1419;
  --panel: #1a222d;
  --panel-border: #2a3647;
  --felt: #1e4d2b;
  --felt-dark: #163d22;
  --text: #e8eef5;
  --muted: #8fa3b8;
  --accent: #4da3ff;
  --accent-dim: #2d6cb3;
  --danger: #ff6b6b;
  --man: #e85d5d;
  --pin: #5d8de8;
  --sou: #5dbd7a;
  --honor: #c9a84c;
  --tile-bg: #f7f3ea;
  --tile-border: #c8bfa8;
  --reach: #ff4444;
  --board-size: 280px;
  --sidebar-w: 232px;
  --controls-w: 268px;
  --sidebar-strip-h: 128px;
}

* { box-sizing: border-box; }

html, body {
  height: 100%;
  overflow: hidden;
}

body {
  margin: 0;
  font-family: "Segoe UI", system-ui, sans-serif;
  background: var(--bg);
  color: var(--text);
}

#app {
  display: flex;
  flex-direction: column;
  height: 100vh;
  height: 100dvh;
  max-height: 100vh;
  max-height: 100dvh;
  overflow: hidden;
}

.top-bar {
  flex-shrink: 0;
  display: flex;
  align-items: center;
  gap: 1.5rem;
  padding: 0.75rem 1.25rem;
  background: var(--panel);
  border-bottom: 1px solid var(--panel-border);
}

.brand { font-weight: 700; letter-spacing: 0.04em; }
.match-info { flex: 1; color: var(--muted); }
.wall-info { font-variant-numeric: tabular-nums; }

.workspace {
  flex: 1;
  min-height: 0;
  display: grid;
  overflow: hidden;
}

.sidebar,
.table-area,
.controls {
  min-width: 0;
  min-height: 0;
}

.sidebar { grid-area: sidebar; }
.table-area { grid-area: board; }
.controls { grid-area: controls; }

.workspace[data-layout="sidebar-left"] {
  grid-template-columns: var(--sidebar-w) minmax(0, 1fr);
  grid-template-rows: minmax(0, 1fr) auto;
  grid-template-areas:
    "sidebar board"
    "sidebar controls";
}

.workspace[data-layout="sidebar-right"] {
  grid-template-columns: minmax(0, 1fr) var(--sidebar-w);
  grid-template-rows: minmax(0, 1fr) auto;
  grid-template-areas:
    "board sidebar"
    "controls sidebar";
}

.workspace[data-layout="stacked"] {
  grid-template-columns: minmax(0, 1fr);
  grid-template-rows: auto minmax(0, 1fr) auto;
  grid-template-areas:
    "sidebar"
    "board"
    "controls";
}

.workspace[data-layout="controls-right"] {
  grid-template-columns: var(--sidebar-w) minmax(0, 1fr) var(--controls-w);
  grid-template-rows: minmax(0, 1fr);
  grid-template-areas: "sidebar board controls";
}

.sidebar {
  display: flex;
  flex-direction: column;
  background: var(--panel);
  padding: 0.75rem;
  overflow: hidden;
}

.workspace[data-layout="sidebar-left"] .sidebar {
  border-right: 1px solid var(--panel-border);
}

.workspace[data-layout="sidebar-right"] .sidebar {
  border-left: 1px solid var(--panel-border);
}

.workspace[data-layout="stacked"] .sidebar {
  max-height: var(--sidebar-strip-h);
  border-bottom: 1px solid var(--panel-border);
}

.workspace[data-layout="controls-right"] .sidebar {
  border-right: 1px solid var(--panel-border);
}

.sidebar h2 { margin: 0 0 0.75rem; font-size: 1rem; flex-shrink: 0; }
.sidebar .btn { flex-shrink: 0; }

.log-list {
  list-style: none;
  flex: 1;
  min-height: 0;
  margin: 0.75rem 0 0;
  padding: 0;
  overflow-y: auto;
}

.workspace[data-layout="stacked"] .log-list {
  display: flex;
  flex-direction: row;
  gap: 0.35rem;
  overflow-x: auto;
  overflow-y: hidden;
}

.workspace[data-layout="stacked"] .log-item {
  flex: 0 0 220px;
  margin-bottom: 0;
}

.table-area {
  display: flex;
  align-items: center;
  justify-content: center;
  overflow: hidden;
  background: radial-gradient(ellipse at center, var(--felt) 0%, var(--felt-dark) 70%);
}

.arena {
  width: min(var(--board-size), 100%);
  height: min(var(--board-size), 100%);
  aspect-ratio: 1;
  position: relative;
  flex-shrink: 0;
  font-size: max(9px, calc(var(--board-size) * 0.014));
  /* w=x, h=4x/3; board cross-section 4h+4h+6w=50x/3 → x<0.06; test x=0.05·board */
  --tile-w: calc(var(--board-size) * 0.05);
  --tile-h: calc(var(--tile-w) * 4 / 3);
  --tile-gap: max(1px, calc(var(--tile-w) * 0.08));
  --tile-radius: max(1px, calc(var(--tile-w) * 0.1));
  --kawa-inset-y: calc(var(--tile-h) * 2);
  --kawa-inset-x: calc(var(--tile-w) * 3);
  --anim-lift: calc(var(--tile-h) * 0.45);
}

.board {
  width: 100%;
  height: 100%;
  position: relative;
}

.seat {
  position: absolute;
  display: flex;
  flex-direction: column;
  gap: 0.35rem;
  min-width: calc(var(--board-size) * 0.42);
  transition: transform 0.35s ease, opacity 0.35s ease;
}

.seat-bottom { bottom: 0; left: 50%; transform: translateX(-50%); align-items: center; }
.seat-top { top: 0; left: 50%; transform: translateX(-50%); align-items: center; }
.seat-left { left: 0; top: 50%; transform: translateY(-50%); align-items: flex-start; }
.seat-right { right: 0; top: 50%; transform: translateY(-50%); align-items: flex-end; }

.seat-left .tile-row,
.seat-right .tile-row {
  flex-direction: column;
  align-items: center;
}

.seat-head {
  display: flex;
  align-items: center;
  gap: 0.5rem;
  font-size: 0.85rem;
}

.seat-label {
  font-weight: 600;
  padding: 0.15rem 0.45rem;
  border-radius: 4px;
  background: rgba(0,0,0,0.35);
}

.seat-label.dealer { outline: 2px solid var(--honor); }
.seat-label.active-turn { outline: 2px solid var(--accent); }

.score { font-variant-numeric: tabular-nums; color: var(--text); }
.reach-badge {
  color: var(--reach);
  font-size: 0.75rem;
  font-weight: 700;
}

.center-info {
  position: absolute;
  top: 50%;
  left: 50%;
  transform: translate(-50%, -50%);
  text-align: center;
  background: rgba(0,0,0,0.45);
  padding: 0.75rem 1rem;
  border-radius: calc(var(--board-size) * 0.013);
  min-width: calc(var(--board-size) * 0.15);
  z-index: 2;
}

.kawa-ring {
  position: absolute;
  inset: 0;
  pointer-events: none;
}

.kawa {
  position: absolute;
  display: grid;
  gap: var(--tile-gap);
  pointer-events: auto;
}

.kawa-bottom {
  left: 50%;
  top: calc(50% + var(--kawa-inset-y));
  transform: translateX(-50%);
  grid-template-columns: repeat(6, var(--tile-w));
}

.kawa-top {
  left: 50%;
  bottom: calc(50% + var(--kawa-inset-y));
  transform: translateX(-50%);
  grid-template-columns: repeat(6, var(--tile-w));
  direction: rtl;
}

.kawa-right {
  left: calc(50% + var(--kawa-inset-x));
  top: 50%;
  transform: translateY(-50%);
  display: flex;
  flex-direction: row;
  gap: var(--tile-gap);
}

.kawa-top .tile {
  direction: ltr;
}

.kawa-left {
  right: calc(50% + var(--kawa-inset-x));
  top: 50%;
  transform: translateY(-50%);
  display: flex;
  flex-direction: row;
  gap: var(--tile-gap);
}

.kawa-col {
  display: flex;
  flex-direction: column;
  gap: var(--tile-gap);
}

.dora-row, .center-meta { font-size: 0.8rem; color: var(--muted); }
.last-action {
  margin-top: 0.35rem;
  font-size: 0.9rem;
  color: var(--accent);
}

.tile-row {
  display: flex;
  flex-wrap: wrap;
  gap: var(--tile-gap);
  justify-content: center;
}

.seat-bottom .tile-row.hand,
.seat-top .tile-row.hand {
  flex-wrap: nowrap;
}

.tile {
  width: var(--tile-w);
  height: var(--tile-h);
  display: flex;
  align-items: center;
  justify-content: center;
  background: transparent;
  border: none;
  box-shadow: none;
  overflow: visible;
  flex-shrink: 0;
}

.tile-face {
  width: var(--tile-w);
  height: var(--tile-h);
  background: #fff;
  border-radius: var(--tile-radius);
  overflow: hidden;
  display: flex;
  align-items: center;
  justify-content: center;
  transition: transform 0.25s ease;
  flex-shrink: 0;
}

.tile img {
  width: 100%;
  height: 100%;
  object-fit: contain;
  display: block;
  pointer-events: none;
}

.tile-face.fallback {
  background: var(--tile-bg);
  border: 1px solid var(--tile-border);
  box-shadow: 0 2px 4px rgba(0,0,0,0.25);
  font-weight: 700;
  font-size: 0.72rem;
  line-height: 1;
}

.tile.man .tile-face.fallback { color: var(--man); }
.tile.pin .tile-face.fallback { color: var(--pin); }
.tile.sou .tile-face.fallback { color: var(--sou); }
.tile.honor .tile-face.fallback { color: var(--honor); }
.tile.red .tile-face.fallback { background: #ffe8e8; }

.tile.tsumogiri .tile-face { opacity: 0.45; }
.tile.reach-discard .tile-face { transform: rotate(90deg); }
.tile.discard-anim .tile-face { animation: discard-fly 0.35s ease; }
.tile.draw-anim .tile-face { animation: draw-pop 0.35s ease; }

@keyframes discard-fly {
  from { transform: translateY(calc(-1 * var(--anim-lift))) scale(0.85); opacity: 0.3; }
  to { transform: translateY(0) scale(1); opacity: 1; }
}

@keyframes draw-pop {
  from { transform: scale(0.6); opacity: 0.2; }
  to { transform: scale(1); opacity: 1; }
}

.meld-group {
  display: flex;
  gap: max(1px, calc(var(--tile-gap) * 0.67));
  padding: max(1px, calc(var(--tile-gap) * 0.67));
  border-radius: calc(var(--board-size) * 0.007);
  background: rgba(0,0,0,0.2);
}

.meld-group .tile.side .tile-face { opacity: 0.75; transform: rotate(90deg); }

.seat-right .tile,
.kawa-right .tile,
.seat-left .tile,
.kawa-left .tile {
  width: var(--tile-h);
  height: var(--tile-w);
}

.seat-right .tile-face,
.kawa-right .tile-face {
  transform: rotate(-90deg);
}

.seat-left .tile-face,
.kawa-left .tile-face {
  transform: rotate(90deg);
}

.seat-right .tile.reach-discard .tile-face,
.kawa-right .tile.reach-discard .tile-face {
  transform: rotate(180deg);
}

.seat-left .tile.reach-discard .tile-face,
.kawa-left .tile.reach-discard .tile-face {
  transform: rotate(0deg);
}

.seat-right .meld-group .tile.side .tile-face {
  opacity: 0.75;
  transform: rotate(180deg);
}

.seat-left .meld-group .tile.side .tile-face {
  opacity: 0.75;
  transform: rotate(0deg);
}

.seat-right .tile.discard-anim .tile-face { animation: discard-fly-side-right 0.35s ease; }
.seat-left .tile.discard-anim .tile-face { animation: discard-fly-side-left 0.35s ease; }
.seat-right .tile.draw-anim .tile-face { animation: draw-pop-side-right 0.35s ease; }
.seat-left .tile.draw-anim .tile-face { animation: draw-pop-side-left 0.35s ease; }
.kawa-right .tile.discard-anim .tile-face { animation: discard-fly-side-right 0.35s ease; }
.kawa-left .tile.discard-anim .tile-face { animation: discard-fly-side-left 0.35s ease; }

@keyframes draw-pop-side-right {
  from { transform: rotate(-90deg) scale(0.6); opacity: 0.2; }
  to { transform: rotate(-90deg) scale(1); opacity: 1; }
}

@keyframes draw-pop-side-left {
  from { transform: rotate(90deg) scale(0.6); opacity: 0.2; }
  to { transform: rotate(90deg) scale(1); opacity: 1; }
}

@keyframes discard-fly-side-right {
  from { transform: rotate(-90deg) translateY(calc(-1 * var(--anim-lift))) scale(0.85); opacity: 0.3; }
  to { transform: rotate(-90deg) translateY(0) scale(1); opacity: 1; }
}

@keyframes discard-fly-side-left {
  from { transform: rotate(90deg) translateY(calc(-1 * var(--anim-lift))) scale(0.85); opacity: 0.3; }
  to { transform: rotate(90deg) translateY(0) scale(1); opacity: 1; }
}

.tile.reach-discard.discard-anim .tile-face { animation: discard-fly-reach 0.35s ease; }
.seat-right .tile.reach-discard.discard-anim .tile-face,
.kawa-right .tile.reach-discard.discard-anim .tile-face { animation: discard-fly-reach-side-right 0.35s ease; }
.seat-left .tile.reach-discard.discard-anim .tile-face,
.kawa-left .tile.reach-discard.discard-anim .tile-face { animation: discard-fly-reach-side-left 0.35s ease; }

@keyframes discard-fly-reach {
  from { transform: rotate(90deg) translateY(calc(-1 * var(--anim-lift))) scale(0.85); opacity: 0.3; }
  to { transform: rotate(90deg) translateY(0) scale(1); opacity: 1; }
}

@keyframes discard-fly-reach-side-right {
  from { transform: rotate(180deg) translateY(calc(-1 * var(--anim-lift))) scale(0.85); opacity: 0.3; }
  to { transform: rotate(180deg) translateY(0) scale(1); opacity: 1; }
}

@keyframes discard-fly-reach-side-left {
  from { transform: rotate(0deg) translateY(calc(-1 * var(--anim-lift))) scale(0.85); opacity: 0.3; }
  to { transform: rotate(0deg) translateY(0) scale(1); opacity: 1; }
}

.controls {
  background: var(--panel);
  border-top: 1px solid var(--panel-border);
  padding: 0.5rem 0.85rem 0.65rem;
  overflow: auto;
}

.workspace[data-layout="sidebar-left"] .controls,
.workspace[data-layout="sidebar-right"] .controls {
  border-top: 1px solid var(--panel-border);
}

.workspace[data-layout="controls-right"] .controls {
  border-top: none;
  border-left: 1px solid var(--panel-border);
  display: flex;
  flex-direction: column;
  gap: 0.65rem;
  padding: 0.75rem;
}

.workspace[data-layout="controls-right"] .transport {
  flex-direction: column;
  align-items: stretch;
  margin-bottom: 0;
}

.workspace[data-layout="controls-right"] .speed-label {
  margin-left: 0;
}

.workspace[data-layout="controls-right"] .event-panel {
  grid-template-columns: 1fr;
}

.workspace[data-layout="controls-right"] .event-json {
  max-height: none;
  flex: 1;
  min-height: 0;
}

.log-item {
  padding: 0.6rem 0.75rem;
  margin-bottom: 0.35rem;
  border-radius: 8px;
  cursor: pointer;
  border: 1px solid transparent;
  background: rgba(255,255,255,0.03);
  transition: border-color 0.15s, background 0.15s;
}

.log-item:hover { border-color: var(--panel-border); }
.log-item.active {
  border-color: var(--accent);
  background: rgba(77, 163, 255, 0.12);
}

.log-item .name {
  font-size: 0.85rem;
  overflow: hidden;
  display: -webkit-box;
  -webkit-box-orient: vertical;
  -webkit-line-clamp: 2;
  line-clamp: 2;
  word-break: break-all;
}

.log-item .meta {
  font-size: 0.75rem;
  color: var(--muted);
  margin-top: 0.25rem;
  overflow: hidden;
  text-overflow: ellipsis;
  white-space: nowrap;
}

.transport {
  display: flex;
  align-items: center;
  gap: 0.5rem;
  flex-wrap: wrap;
  margin-bottom: 0.5rem;
}

.btn {
  border: 1px solid var(--panel-border);
  background: rgba(255,255,255,0.06);
  color: var(--text);
  padding: 0.45rem 0.85rem;
  border-radius: 8px;
  cursor: pointer;
  font-size: 0.9rem;
}

.btn:hover { background: rgba(255,255,255,0.1); }
.btn.primary { background: var(--accent-dim); border-color: var(--accent); }
.btn.secondary { font-size: 0.8rem; }

.speed-label { margin-left: auto; font-size: 0.85rem; color: var(--muted); }
.speed-label select {
  margin-left: 0.35rem;
  background: var(--bg);
  color: var(--text);
  border: 1px solid var(--panel-border);
  border-radius: 6px;
  padding: 0.25rem;
}

.timeline-wrap { position: relative; margin-bottom: 0.5rem; }

#timeline {
  width: 100%;
  accent-color: var(--accent);
}

.kyoku-ticks {
  position: relative;
  height: 12px;
  margin-top: 2px;
}

.kyoku-tick {
  position: absolute;
  top: 0;
  width: 2px;
  height: 10px;
  background: var(--honor);
  transform: translateX(-1px);
}

.event-panel {
  display: grid;
  grid-template-columns: 200px 1fr;
  gap: 0.75rem;
  align-items: start;
}

.event-summary { font-size: 0.85rem; color: var(--muted); }

.event-json {
  margin: 0;
  padding: 0.4rem 0.65rem;
  background: var(--bg);
  border: 1px solid var(--panel-border);
  border-radius: 8px;
  font-size: 0.72rem;
  max-height: 64px;
  overflow: auto;
  white-space: pre-wrap;
  word-break: break-all;
}

.agari-overlay {
  position: absolute;
  inset: 0;
  display: flex;
  align-items: center;
  justify-content: center;
  background: rgba(0,0,0,0.55);
  animation: fade-in 0.3s ease;
}

.agari-overlay.hidden { display: none; }

.agari-card {
  background: var(--panel);
  border: 2px solid var(--honor);
  border-radius: 16px;
  padding: 1.5rem 2rem;
  text-align: center;
  animation: scale-in 0.35s ease;
}

@keyframes fade-in { from { opacity: 0; } to { opacity: 1; } }
@keyframes scale-in { from { transform: scale(0.85); } to { transform: scale(1); } }

.hidden { display: none !important; }

@media (max-width: 640px) {
  html, body { overflow: auto; }
  #app {
    height: auto;
    max-height: none;
    overflow: visible;
  }
  .workspace {
    display: flex;
    flex-direction: column;
    overflow: visible;
  }
  .workspace[data-layout] {
    grid-template-columns: 1fr;
    grid-template-rows: auto auto auto;
    grid-template-areas:
      "sidebar"
      "board"
      "controls";
  }
  .sidebar {
    max-height: 140px;
    border-right: none !important;
    border-left: none !important;
    border-bottom: 1px solid var(--panel-border);
  }
  .log-list {
    display: flex;
    flex-direction: row;
    gap: 0.35rem;
    overflow-x: auto;
    overflow-y: hidden;
  }
  .log-item {
    flex: 0 0 200px;
    margin-bottom: 0;
  }
  .table-area {
    min-height: min(var(--board-size), 72vw);
  }
  .arena {
    width: min(var(--board-size), 100vw);
    height: min(var(--board-size), 100vw);
  }
  .controls {
    border-left: none !important;
  }
  .event-panel { grid-template-columns: 1fr; }
}