:root {
  color-scheme: light;
  --ink: #202124;
  --muted: #626560;
  --paper: #f4f6f1;
  --surface: #ffffff;
  --line: #d8ddd0;
  --coal: #262522;
  --teal: #17766f;
  --red: #b63d32;
  --amber: #b67916;
  --green: #2f7d45;
  --shadow: 0 16px 42px rgba(32, 33, 36, 0.12);
}

* {
  box-sizing: border-box;
}

body {
  margin: 0;
  min-height: 100vh;
  background:
    linear-gradient(135deg, rgba(23, 118, 111, 0.08), transparent 28rem),
    linear-gradient(180deg, #f8f9f4 0%, #eef3ec 100%);
  color: var(--ink);
  font-family:
    Inter, ui-sans-serif, system-ui, -apple-system, BlinkMacSystemFont, "Segoe UI", sans-serif;
}

button,
input,
select {
  font: inherit;
}

button {
  border: 0;
}

.app-shell {
  min-height: 100vh;
}

.loading {
  display: grid;
  min-height: 100vh;
  place-items: center;
  color: var(--muted);
}

.topbar {
  display: grid;
  grid-template-columns: minmax(0, 1fr) minmax(240px, auto);
  gap: 16px;
  align-items: center;
  padding: 22px clamp(16px, 4vw, 36px);
  background: var(--coal);
  color: #fff;
}

.topbar h1,
.topbar p {
  margin: 0;
}

.topbar h1 {
  font-size: clamp(24px, 3vw, 36px);
  letter-spacing: 0;
}

.topbar p {
  max-width: 720px;
  color: rgba(255, 255, 255, 0.78);
}

.layout {
  display: grid;
  grid-template-columns: minmax(260px, 360px) minmax(320px, 1fr) minmax(280px, 380px);
  gap: 18px;
  padding: 18px clamp(16px, 4vw, 36px) 32px;
}

.surface {
  display: grid;
  align-content: start;
  gap: 14px;
  min-width: 0;
}

.panel,
.room-focus,
.empty-state {
  border: 1px solid var(--line);
  border-radius: 8px;
  background: rgba(255, 255, 255, 0.94);
  box-shadow: var(--shadow);
}

.panel,
.room-focus,
.empty-state {
  padding: 16px;
}

.panel-title {
  display: flex;
  gap: 10px;
  align-items: center;
  justify-content: space-between;
  margin-bottom: 12px;
}

.panel-title h2,
.empty-state h2,
.score-panel h3 {
  margin: 0;
  font-size: 18px;
  letter-spacing: 0;
}

.empty-state {
  display: grid;
  min-height: 240px;
  align-content: center;
  gap: 8px;
}

.empty-state p,
.game-row p {
  margin: 0;
  color: var(--muted);
}

.stack,
.game-list,
.known-list,
.room-focus,
.score-panel {
  display: grid;
  gap: 10px;
}

.field {
  display: grid;
  gap: 6px;
}

.field span {
  color: var(--muted);
  font-size: 13px;
}

.field input,
.field select,
select[data-action] {
  width: 100%;
  min-height: 42px;
  border: 1px solid var(--line);
  border-radius: 8px;
  padding: 9px 11px;
  background: #fff;
  color: var(--ink);
  outline: none;
}

.field input:focus,
.field select:focus,
select[data-action]:focus {
  border-color: var(--teal);
  box-shadow: 0 0 0 3px rgba(23, 118, 111, 0.14);
}

.button {
  display: inline-flex;
  min-height: 40px;
  align-items: center;
  justify-content: center;
  border-radius: 8px;
  padding: 9px 14px;
  background: var(--coal);
  color: #fff;
  cursor: pointer;
  font-weight: 800;
}

.button.primary {
  background: var(--teal);
}

.button.secondary {
  border: 1px solid var(--line);
  background: #fff;
  color: var(--ink);
}

.button:disabled {
  cursor: not-allowed;
  opacity: 0.58;
}

.action-row {
  display: flex;
  flex-wrap: wrap;
  gap: 8px;
}

.notice {
  justify-self: end;
  border-left: 4px solid var(--amber);
  border-radius: 8px;
  padding: 10px 12px;
  background: rgba(182, 121, 22, 0.16);
  color: #fff;
}

.notice.error {
  border-color: var(--red);
  background: rgba(182, 61, 50, 0.22);
}

.room-code {
  border-radius: 8px;
  padding: 18px;
  background: var(--coal);
  color: #fff;
  font-size: clamp(32px, 8vw, 68px);
  font-weight: 900;
  letter-spacing: 0;
  text-align: center;
}

.room-meta {
  display: flex;
  flex-wrap: wrap;
  gap: 8px;
}

.tag {
  display: inline-flex;
  min-height: 24px;
  align-items: center;
  border-radius: 999px;
  padding: 3px 9px;
  background: #eef0ea;
  color: var(--muted);
  font-size: 12px;
  white-space: nowrap;
}

.game-row {
  display: grid;
  grid-template-columns: minmax(0, 1fr) auto;
  gap: 10px;
  align-items: start;
  min-height: 72px;
  border: 1px solid var(--line);
  border-radius: 8px;
  padding: 12px;
  background: #fff;
}

.game-row h3 {
  margin: 0 0 4px;
  font-size: 16px;
}

.game-row.placeholder {
  opacity: 0.62;
}

.known-room,
.score-row {
  display: flex;
  min-height: 42px;
  align-items: center;
  justify-content: space-between;
  gap: 10px;
  border: 1px solid var(--line);
  border-radius: 8px;
  padding: 8px 10px;
  background: #fff;
  color: var(--ink);
}

.known-room {
  cursor: pointer;
  text-align: left;
}

.known-room span,
.score-row span:last-child {
  color: var(--muted);
  font-size: 13px;
}

@media (max-width: 1080px) {
  .layout {
    grid-template-columns: minmax(260px, 360px) minmax(0, 1fr);
  }

  .surface:last-child {
    grid-column: 1 / -1;
  }
}

@media (max-width: 760px) {
  .topbar,
  .layout {
    grid-template-columns: 1fr;
  }

  .notice {
    justify-self: stretch;
  }
}