:root {
  --bg: #f8f4ee;
  --surface: #ffffff;
  --text: #1e1b18;
  --muted: #6c6258;
  --accent: #199ec5;
  --accent-contrast: #ffffff;
  --danger: #c33149;
  --line: #ddd1c4;
}

* {
  box-sizing: border-box;
}

body {
  margin: 0;
  font-family: "Avenir Next", Avenir, "Segoe UI", sans-serif;
  background: radial-gradient(circle at top, #fff7ec 0%, var(--bg) 55%);
  color: var(--text);
}

.flash {
  max-width: 980px;
  margin: 1rem auto 0;
  padding: 0.75rem 1rem;
  border-radius: 0.5rem;
  background: #eaf7f1;
  border: 1px solid #bedfce;
}

.flash.alert {
  background: #ffeef0;
  border-color: #f6c5ce;
}

.page {
  max-width: 980px;
  margin: 1rem auto 2rem;
  padding: 0 1rem;
}

.page-header {
  display: flex;
  flex-wrap: wrap;
  gap: 0.75rem;
  justify-content: space-between;
  align-items: flex-start;
}

.grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(260px, 1fr));
  gap: 1rem;
}

.card {
  background: var(--surface);
  border: 1px solid var(--line);
  border-radius: 0.75rem;
  padding: 1rem;
  margin-top: 1rem;
}

.field {
  margin-bottom: 0.75rem;
}

label {
  display: block;
  font-weight: 600;
  margin-bottom: 0.25rem;
}

input[type="text"],
input[type="password"],
input[type="number"] {
  width: 100%;
  border: 1px solid var(--line);
  border-radius: 0.5rem;
  padding: 0.55rem 0.65rem;
  font-size: 1rem;
}

.button {
  display: inline-block;
  border: 1px solid var(--line);
  border-radius: 0.5rem;
  background: #fff;
  color: var(--text);
  text-decoration: none;
  padding: 0.5rem 0.8rem;
  cursor: pointer;
  font-size: 0.95rem;
}

.button-primary {
  background: var(--accent);
  color: var(--accent-contrast);
  border-color: var(--accent);
}

.card-actions {
  display: flex;
  flex-wrap: wrap;
  gap: 0.5rem;
}

.card-button {
  min-width: 3rem;
  text-align: center;
}

.rooms {
  list-style: none;
  margin: 0;
  padding: 0;
}

.room-row {
  display: flex;
  justify-content: space-between;
  align-items: center;
  border-top: 1px solid var(--line);
  padding: 0.75rem 0;
}

.room-row:first-child {
  border-top: 0;
}

.meta {
  display: block;
  color: var(--muted);
  font-size: 0.9rem;
}

.badge {
  display: inline-block;
  background: #ecf5f1;
  color: #156b83;
  border: 1px solid #c8e4d8;
  border-radius: 999px;
  padding: 0.15rem 0.55rem;
  margin-right: 0.4rem;
  font-size: 0.78rem;
}

.badge-danger {
  background: #fdecef;
  color: #8c1e34;
  border-color: #f3c0cc;
}

.errors {
  margin-top: 1rem;
  padding-left: 1rem;
  color: #912338;
}

.actions {
  display: flex;
  flex-wrap: wrap;
  gap: 0.5rem;
}

.actions form {
  margin: 0;
}

.chat-messages {
  list-style: none;
  margin: 0;
  padding: 0;
  display: flex;
  flex-direction: column;
  gap: 0.55rem;
  min-height: 0;
  flex: 1;
  overflow-y: auto;
}

.chat-message {
  display: flex;
}

.chat-bubble {
  width: 100%;
  border: 1px solid #ddd5cb;
  border-radius: 0.8rem;
  padding: 0.55rem 0.65rem;
  background: #fffdf8;
}

.chat-meta {
  display: flex;
  justify-content: space-between;
  gap: 0.5rem;
  font-size: 0.78rem;
  color: var(--muted);
  margin-bottom: 0.25rem;
}

.chat-content {
  line-height: 1.35;
  word-break: break-word;
}

.chat-form-row {
  display: grid;
  grid-template-columns: 1fr auto;
  gap: 0.5rem;
}

.chat-input-wrap {
  border-top: 1px solid #e7ddd1;
  padding-top: 0.75rem;
  margin-top: 0.5rem;
}

.chat-send {
  min-width: 5rem;
}

.chat-locked {
  margin: 0;
}

.played-stack {
  display: flex;
  gap: 0.4rem;
  overflow-x: auto;
  padding-bottom: 0.2rem;
}

.stack-card {
  min-width: 3.3rem;
  border: 1px solid var(--line);
  border-radius: 0.5rem;
  background: #fefdf9;
  padding: 0.35rem 0.45rem;
  text-align: center;
}

.stack-value {
  display: block;
  font-weight: 700;
}

.stack-meta {
  display: block;
  font-size: 0.68rem;
  color: var(--muted);
}

.stack-card-mistake {
  border-color: #f3c0cc;
  background: #fff3f6;
}

.room-layout {
  display: grid;
  grid-template-columns: minmax(0, 1fr) 22rem;
  gap: 1rem;
  align-items: start;
}

.room-main {
  min-width: 0;
}

.chat-shell {
  margin-top: 1rem;
  background: #fff;
  border: 1px solid var(--line);
  border-radius: 0.9rem;
  padding: 0.75rem;
  display: flex;
  flex-direction: column;
  height: min(70vh, 680px);
  min-height: 420px;
  max-height: 680px;
  position: relative;
}

.chat-new-indicator {
  align-self: center;
  margin-top: 0.35rem;
  margin-bottom: 0.35rem;
  border: 1px solid #d4e8dd;
  background: #f1fbf5;
  color: #156b83;
  border-radius: 999px;
  padding: 0.28rem 0.72rem;
  font-size: 0.78rem;
  cursor: pointer;
}

@media (max-width: 980px) {
  .room-layout {
    grid-template-columns: 1fr;
  }

  .chat-shell {
    order: 2;
    height: 460px;
    min-height: 460px;
  }
}

.game-shell {
  max-width: 1220px;
  margin: 0 auto;
  min-height: 100vh;
  padding: 0.8rem 1rem 1.2rem;
  color: #16202a;
  position: relative;
  z-index: 0;
}

.game-shell::before {
  content: "";
  position: fixed;
  inset: 0;
  z-index: -1;
  background:
    radial-gradient(circle at 12% 20%, #d9f2e8 0%, transparent 34%),
    radial-gradient(circle at 90% 80%, #ffe9d6 0%, transparent 35%),
    linear-gradient(170deg, #f8fbff 0%, #edf4f9 45%, #e8f0f7 100%);
}

.game-hud {
  display: flex;
  justify-content: space-between;
  align-items: center;
  gap: 1rem;
  padding: 0.55rem 0.75rem;
  border: 1px solid #b4c7d8;
  border-radius: 0.85rem;
  background: rgba(255, 255, 255, 0.86);
  backdrop-filter: blur(3px);
}

.hud-room {
  display: flex;
  align-items: center;
  gap: 0.65rem;
  flex-wrap: wrap;
}

.hud-name {
  font-size: 1.05rem;
  font-weight: 700;
  letter-spacing: 0.02em;
}

.hud-code {
  color: #4d5d6d;
  font-size: 0.9rem;
}

.hud-lock {
  font-size: 0.76rem;
  border: 1px solid #93abc0;
  border-radius: 999px;
  padding: 0.15rem 0.5rem;
  color: #385067;
}

.hud-actions .button,
.hud-actions .button-primary {
  background: #ffffff;
  border-color: #98afc3;
  color: #233547;
}

.hud-actions {
  display: flex;
  flex-wrap: wrap;
  gap: 0.5rem;
  align-items: center;
}

.hud-actions form {
  display: inline-block;
  margin: 0;
}

.hud-actions .button-primary {
  background: var(--accent);
  border-color: var(--accent);
}

.join-overlay {
  margin-top: 0.9rem;
  max-width: 420px;
  background: rgba(255, 255, 255, 0.94);
  border: 1px solid #b4c7d8;
  border-radius: 0.8rem;
  padding: 0.85rem;
}

.arena-layout {
  margin-top: 0.9rem;
  display: grid;
  grid-template-columns: minmax(0, 1fr) 320px;
  gap: 1rem;
}

.playfield {
  min-width: 0;
  background: radial-gradient(circle at 50% 12%, #f3fbf5 0%, #edf5fb 52%, #e7f0f8 100%);
  border: 1px solid #b4c7d8;
  border-radius: 1rem;
  padding: 0.85rem;
}

.status-hud {
  display: flex;
  flex-wrap: wrap;
  gap: 0.7rem;
  margin-bottom: 0.8rem;
  font-size: 0.92rem;
  color: #233547;
}

.status-hud-alert {
  animation: hud-alert-flash 900ms ease-out;
}

.player-strip {
  list-style: none;
  margin: 0;
  padding: 0;
  display: flex;
  flex-wrap: wrap;
  gap: 0.55rem;
}

.player-chip {
  display: inline-flex;
  align-items: center;
  gap: 0.45rem;
  background: rgba(255, 255, 255, 0.92);
  border: 1px solid #b2c6d9;
  border-radius: 999px;
  padding: 0.25rem 0.55rem;
}

.player-name {
  font-weight: 600;
}

.player-cards {
  color: #4a5d70;
  font-size: 0.8rem;
}

.stack-field {
  margin-top: 0.85rem;
  min-height: 88px;
}

.played-stack .stack-card:first-child {
  animation: stack-card-pop 260ms cubic-bezier(0.18, 0.85, 0.32, 1.2);
}

.stack-empty {
  margin: 0.4rem 0;
  color: #506276;
}

.hand-hud {
  margin-top: 0.85rem;
  border-top: 1px solid #b4c7d8;
  padding-top: 0.65rem;
}

.hand-label {
  font-size: 0.84rem;
  text-transform: uppercase;
  letter-spacing: 0.07em;
  color: #506276;
  margin-bottom: 0.45rem;
}

.hand-cards {
  display: flex;
  flex-wrap: wrap;
  gap: 0.5rem;
}

.hand-card {
  min-width: 3.2rem;
  border: 1px solid #91aac1;
  border-radius: 0.55rem;
  background: linear-gradient(180deg, #ffffff 0%, #eef5fd 100%);
  color: #1b3249;
  padding: 0.45rem 0.7rem;
  font-weight: 700;
  cursor: pointer;
}

.radio-panel {
  background: rgba(255, 255, 255, 0.94);
  border: 1px solid #b4c7d8;
  border-radius: 1rem;
  padding: 0.75rem;
  display: flex;
  flex-direction: column;
  height: min(80vh, 760px);
  min-height: 460px;
}

.radio-panel .chat-bubble {
  background: #f7fbff;
  color: #203547;
  border-color: #b4c7d8;
}

.radio-panel .chat-meta {
  color: #5a6f82;
}

.radio-panel input[type="text"] {
  background: #ffffff;
  color: #203547;
  border-color: #9bb1c5;
}

.badge-ready {
  animation: ready-pulse 1.7s ease-in-out infinite;
}

@keyframes stack-card-pop {
  0% {
    transform: scale(0.86);
    opacity: 0;
  }
  100% {
    transform: scale(1);
    opacity: 1;
  }
}

@keyframes ready-pulse {
  0%,
  100% {
    box-shadow: 0 0 0 0 rgba(25, 158, 197, 0);
  }
  45% {
    box-shadow: 0 0 0 6px rgba(25, 158, 197, 0.2);
  }
}

@keyframes hud-alert-flash {
  0% {
    background: rgba(255, 120, 120, 0.38);
  }
  100% {
    background: transparent;
  }
}

.stack-card {
  min-width: 3.6rem;
  border: 1px solid #8da7be;
  border-radius: 0.55rem;
  background: linear-gradient(180deg, #ffffff 0%, #edf5fd 100%);
  box-shadow: 0 1px 0 rgba(50, 72, 93, 0.08);
  padding: 0.4rem 0.5rem;
  text-align: center;
}

.stack-value {
  display: block;
  font-weight: 800;
  font-size: 1.03rem;
  color: #122a43;
}

.stack-meta {
  display: block;
  font-size: 0.69rem;
  color: #4c6178;
}

@media (max-width: 980px) {
  .game-shell {
    padding: 0.65rem 0.7rem 1rem;
  }

  .arena-layout {
    grid-template-columns: 1fr;
  }

  .radio-panel {
    height: 460px;
    min-height: 460px;
  }

  .game-hud {
    flex-direction: column;
    align-items: flex-start;
  }
}