:root {
  --bg: #f5f5f7;
  --bg-elev: #ffffff;
  --surface-soft: rgba(255, 255, 255, 0.72);
  --border: rgba(15, 23, 42, 0.08);
  --text: #111827;
  --muted: #6b7280;
  --accent: #111827;
  --accent-dim: #374151;
  --danger: #d92d20;
  --warn: #b7791f;
  --shadow: 0 24px 60px rgba(15, 23, 42, 0.08);
  --radius: 22px;
  --font: -apple-system, BlinkMacSystemFont, 'SF Pro Display', 'SF Pro Text', 'Segoe UI', sans-serif;
}

*,
*::before,
*::after {
  box-sizing: border-box;
}

html,
body {
  margin: 0;
  min-height: 100%;
  background:
    radial-gradient(900px 500px at 0% 0%, rgba(255, 255, 255, 0.95) 0%, rgba(245, 245, 247, 0) 60%),
    radial-gradient(1000px 600px at 100% 10%, rgba(226, 232, 240, 0.9) 0%, rgba(245, 245, 247, 0) 58%),
    linear-gradient(180deg, #fbfbfd 0%, var(--bg) 100%);
  color: var(--text);
  font-family: var(--font);
  line-height: 1.5;
}

a {
  color: var(--accent);
  text-decoration: none;
}
a:hover {
  opacity: 0.72;
}

.topbar {
  border-bottom: 1px solid var(--border);
  background: rgba(255, 255, 255, 0.78);
  backdrop-filter: blur(18px);
  position: sticky;
  top: 0;
  z-index: 10;
}

.topbar-inner {
  max-width: 960px;
  margin: 0 auto;
  padding: 14px 18px;
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 16px;
}

.brand {
  font-weight: 700;
  letter-spacing: -0.03em;
  color: var(--text);
  font-size: 1.25rem;
}

.nav {
  display: flex;
  gap: 14px;
  font-size: 0.95rem;
}

.nav a {
  color: var(--muted);
}

.shell {
  max-width: 960px;
  margin: 0 auto;
  padding: 28px 18px 80px;
}

.shell.narrow {
  max-width: 640px;
}

.card {
  background: var(--surface-soft);
  border: 1px solid var(--border);
  border-radius: var(--radius);
  padding: 24px;
  box-shadow: var(--shadow);
  backdrop-filter: blur(22px);
}

.hero h1 {
  margin: 8px 0 12px;
  font-size: clamp(2.4rem, 7vw, 4.6rem);
  letter-spacing: -0.02em;
  font-weight: 700;
}

.eyebrow {
  text-transform: uppercase;
  letter-spacing: 0.12em;
  font-size: 0.72rem;
  color: var(--muted);
  margin: 0;
}

.lede {
  color: var(--muted);
  max-width: 56ch;
}

.muted {
  color: var(--muted);
}

.small {
  font-size: 0.9rem;
}

.actions {
  display: flex;
  flex-wrap: wrap;
  gap: 10px;
  margin-top: 16px;
}

.actions.row {
  margin-top: 10px;
}

.btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: 8px;
  padding: 11px 18px;
  border-radius: 999px;
  border: 1px solid var(--border);
  background: rgba(255, 255, 255, 0.86);
  color: var(--text);
  cursor: pointer;
  font-weight: 600;
  font-size: 0.95rem;
  box-shadow: 0 8px 20px rgba(15, 23, 42, 0.06);
}

.btn:disabled {
  opacity: 0.55;
  cursor: not-allowed;
}

.btn-primary {
  background: linear-gradient(180deg, #1f2937 0%, #111827 100%);
  border-color: rgba(17, 24, 39, 0.15);
  color: #fff;
}

.btn-ghost {
  background: rgba(255, 255, 255, 0.66);
}

.btn-danger {
  background: linear-gradient(180deg, #f97066 0%, #d92d20 100%);
  border-color: rgba(217, 45, 32, 0.18);
  color: #fff;
}

.form {
  display: flex;
  flex-direction: column;
  gap: 12px;
  margin-top: 16px;
}

.field {
  display: flex;
  flex-direction: column;
  gap: 6px;
  font-size: 0.92rem;
}

.field span {
  color: var(--muted);
}

input,
select,
textarea {
  width: 100%;
  padding: 10px 12px;
  border-radius: 14px;
  border: 1px solid rgba(15, 23, 42, 0.14);
  background: linear-gradient(180deg, rgba(255, 255, 255, 0.98) 0%, rgba(240, 243, 248, 0.96) 100%);
  color: var(--text);
  font-size: 1rem;
  box-shadow:
    inset 0 1px 0 rgba(255, 255, 255, 0.95),
    0 8px 20px rgba(15, 23, 42, 0.04);
}

input:focus,
select:focus,
textarea:focus {
  outline: 3px solid rgba(17, 24, 39, 0.08);
  border-color: rgba(17, 24, 39, 0.18);
  box-shadow:
    0 0 0 6px rgba(255, 255, 255, 0.66),
    0 10px 30px rgba(15, 23, 42, 0.08);
}

input::placeholder,
textarea::placeholder {
  color: #98a2b3;
}

.mono {
  font-family: ui-monospace, SFMono-Regular, Menlo, Monaco, Consolas, 'Liberation Mono', 'Courier New', monospace;
}

.big-code {
  font-size: 1.4rem;
  letter-spacing: 0.2em;
  text-align: center;
}

.join-code {
  width: 100%;
  padding: 10px 12px;
  border-radius: 14px;
  border: 1px solid var(--border);
  background: rgba(255, 255, 255, 0.9);
}

.form-error {
  color: var(--danger);
  margin: 0;
}

.info-note {
  margin: 0;
}

.sticky-error {
  padding: 10px 12px;
  border: 1px solid rgba(217, 45, 32, 0.14);
  border-radius: 14px;
  background: rgba(255, 243, 242, 0.92);
}

.result-block {
  margin-top: 12px;
}

.ok {
  color: var(--accent);
}

.game-layout {
  display: flex;
  flex-direction: column;
  gap: 14px;
}

.game-meta {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(160px, 1fr));
  gap: 10px;
}

.player-meta {
  display: flex;
  flex-direction: column;
  gap: 8px;
  padding: 10px 12px;
  border: 1px solid var(--border);
  border-radius: 16px;
  background: rgba(255, 255, 255, 0.82);
}

.player-attempts {
  display: flex;
  align-items: center;
}

.attempts-badge {
  display: inline-block;
  padding: 2px 8px;
  border-radius: 8px;
  font-size: 0.8rem;
  font-weight: 700;
  background: #eef2f7;
  border: 1px solid var(--border);
  color: var(--accent);
}

.attempts-badge-muted {
  color: var(--accent-dim);
  background: #f3f4f6;
  font-weight: 700;
}

.lbl {
  color: var(--muted);
  font-size: 0.85rem;
  margin-right: 6px;
}

.timer {
  margin-top: 12px;
  padding: 10px 12px;
  border-radius: 16px;
  border: 1px dashed rgba(17, 24, 39, 0.14);
  background: rgba(255, 255, 255, 0.72);
  text-align: center;
}

.chain {
  list-style: none;
  padding: 0;
  margin: 12px 0 0;
  display: flex;
  flex-direction: column;
  gap: 8px;
}

.chain li {
  display: flex;
  justify-content: space-between;
  gap: 12px;
  padding: 10px 12px;
  border: 1px solid var(--border);
  border-radius: 14px;
  background: rgba(255, 255, 255, 0.85);
}

.chain .club {
  font-weight: 600;
}

.chain .who {
  color: var(--muted);
  font-size: 0.9rem;
}

.rule-hint {
  margin: 6px 0 0;
}

.required-letter-hint {
  display: block;
  font-size: 1.05rem;
  margin-bottom: 6px;
}

.required-letter-hint strong {
  color: var(--warn);
  font-size: 1.15rem;
}

.pill {
  display: inline-block;
  padding: 2px 10px;
  border-radius: 999px;
  background: #182031;
  border: 1px solid var(--border);
}

.approval-card {
  margin-top: 8px;
}

.finish-layout {
  display: flex;
  flex-direction: column;
  gap: 18px;
}

.club-big {
  font-size: 1.35rem;
  font-weight: 700;
  margin: 8px 0;
}

.reject-box {
  margin-top: 12px;
  padding-top: 12px;
  border-top: 1px dashed var(--border);
}

.pending-note {
  margin: 0;
  color: var(--warn);
}

.cards-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(112px, 1fr));
  gap: 14px;
  margin-top: 16px;
  perspective: 1200px;
}

.card-back {
  aspect-ratio: 3 / 4;
  position: relative;
  display: flex;
  align-items: center;
  justify-content: center;
  overflow: hidden;
  border-radius: 22px;
  border: 1px solid rgba(15, 23, 42, 0.08);
  background:
    radial-gradient(circle at top left, rgba(255, 255, 255, 0.98), rgba(255, 255, 255, 0.74) 52%, rgba(230, 236, 244, 0.92) 100%);
  color: var(--text);
  cursor: pointer;
  box-shadow:
    0 18px 34px rgba(15, 23, 42, 0.10),
    inset 0 1px 0 rgba(255, 255, 255, 0.9);
  transform: translateY(18px) rotate(var(--rot, 0deg)) scale(0.96);
  opacity: 0;
  transition:
    transform 0.45s cubic-bezier(0.22, 1, 0.36, 1),
    opacity 0.35s ease,
    box-shadow 0.35s ease,
    border-color 0.35s ease,
    filter 0.35s ease;
}

.deal .card-back {
  opacity: 1;
  transform: translateY(0) rotate(var(--rot, 0deg)) scale(1);
}

.card-back:nth-child(1) {
  --rot: -4deg;
}
.card-back:nth-child(2) {
  --rot: 2deg;
}
.card-back:nth-child(3) {
  --rot: -2deg;
}
.card-back:nth-child(4) {
  --rot: 3deg;
}
.card-back:nth-child(5) {
  --rot: -1deg;
}

.card-back:hover {
  border-color: rgba(17, 24, 39, 0.18);
  box-shadow:
    0 24px 44px rgba(15, 23, 42, 0.14),
    inset 0 1px 0 rgba(255, 255, 255, 0.96);
  transform: translateY(-6px) rotate(var(--rot, 0deg)) scale(1.02);
}

.back-inner {
  position: relative;
  z-index: 2;
  display: inline-flex;
  align-items: center;
  justify-content: center;
  width: 56px;
  height: 56px;
  border-radius: 50%;
  border: 1px solid rgba(17, 24, 39, 0.08);
  background: rgba(255, 255, 255, 0.7);
  font-size: 1.7rem;
  font-weight: 800;
  color: #1f2937;
  box-shadow: 0 8px 20px rgba(15, 23, 42, 0.08);
}

.card-back::before {
  content: "";
  position: absolute;
  inset: 10px;
  border-radius: 18px;
  border: 1px dashed rgba(148, 163, 184, 0.45);
}

.card-back::after {
  content: "";
  position: absolute;
  inset: auto 18px 18px;
  height: 26px;
  border-radius: 999px;
  background: linear-gradient(90deg, rgba(226, 232, 240, 0), rgba(148, 163, 184, 0.3), rgba(226, 232, 240, 0));
}

.card-shine {
  position: absolute;
  inset: -35% auto -35% -55%;
  width: 42%;
  transform: rotate(18deg);
  background: linear-gradient(180deg, rgba(255, 255, 255, 0), rgba(255, 255, 255, 0.55), rgba(255, 255, 255, 0));
  opacity: 0;
}

.card-back:hover .card-shine {
  opacity: 1;
  animation: cardShine 0.9s ease;
}

.cards-grid.is-picking .card-back {
  pointer-events: none;
}

.card-back.is-dimmed {
  opacity: 0.42;
  transform: translateY(8px) scale(0.94);
  filter: saturate(0.7);
}

.card-back.is-selected {
  border-color: rgba(17, 24, 39, 0.18);
  box-shadow:
    0 28px 52px rgba(15, 23, 42, 0.18),
    inset 0 1px 0 rgba(255, 255, 255, 0.96);
  animation: chosenCard 0.62s cubic-bezier(0.22, 1, 0.36, 1) forwards;
}

.reveal-open {
  margin-top: 18px;
  padding: 18px;
  border-radius: 22px;
  border: 1px solid rgba(17, 24, 39, 0.08);
  background: linear-gradient(180deg, rgba(255, 255, 255, 0.98) 0%, rgba(248, 250, 252, 0.94) 100%);
  box-shadow:
    0 18px 40px rgba(15, 23, 42, 0.08),
    inset 0 1px 0 rgba(255, 255, 255, 0.92);
  animation: revealCard 0.5s cubic-bezier(0.22, 1, 0.36, 1);
}

.reveal-open .label {
  color: var(--muted);
  margin: 0 0 6px;
}

.task-text {
  margin: 0;
  font-size: 1.08rem;
  line-height: 1.6;
}

.room-chat-card {
  margin-top: 18px;
  padding: 0;
  border: 0;
  border-radius: 0;
  background: transparent;
  box-shadow: none;
  backdrop-filter: none;
}

.finish-layout .room-chat-card {
  margin-top: 0;
}

.chat-head h2 {
  margin: 0 0 4px;
}

.chat-head p {
  margin: 0;
}

.chat-feed {
  display: flex;
  flex-direction: column;
  gap: 10px;
  margin-top: 14px;
  max-height: 260px;
  overflow-y: auto;
  scrollbar-width: none;
  -ms-overflow-style: none;
}

.chat-feed::-webkit-scrollbar {
  display: none;
}

.chat-msg {
  width: fit-content;
  max-width: min(80%, 520px);
  padding: 12px 14px;
  border-radius: 18px 18px 18px 8px;
  background: linear-gradient(180deg, rgba(229, 231, 235, 0.96) 0%, rgba(209, 213, 219, 0.96) 100%);
  border: 1px solid rgba(107, 114, 128, 0.16);
  box-shadow:
    0 12px 24px rgba(15, 23, 42, 0.06),
    inset 0 1px 0 rgba(255, 255, 255, 0.55);
}

.chat-msg-mine {
  align-self: flex-end;
  width: fit-content;
  max-width: min(80%, 520px);
  border-radius: 18px 18px 8px 18px;
  background: linear-gradient(180deg, #1f2937 0%, #111827 100%);
  color: #fff;
}

.chat-msg-name {
  margin: 0 0 4px;
  font-size: 0.8rem;
  color: var(--muted);
}

.chat-msg-mine .chat-msg-name {
  color: rgba(255, 255, 255, 0.72);
}

.chat-msg-text {
  margin: 0;
  line-height: 1.5;
  white-space: pre-wrap;
  word-break: break-word;
}

.chat-form {
  margin-top: 14px;
}

.chat-form textarea {
  resize: none;
  min-height: 72px;
  height: 72px;
  border-radius: 18px;
  border: 1px solid rgba(17, 24, 39, 0.12);
  background: linear-gradient(180deg, rgba(229, 231, 235, 0.96) 0%, rgba(209, 213, 219, 0.96) 100%);
  color: var(--text);
  box-shadow:
    inset 0 1px 0 rgba(255, 255, 255, 0.55),
    0 8px 20px rgba(15, 23, 42, 0.05);
}

.chat-form textarea::placeholder {
  color: #6b7280;
}

.chat-form textarea:focus {
  border-color: rgba(17, 24, 39, 0.18);
  box-shadow:
    0 0 0 5px rgba(255, 255, 255, 0.45),
    0 10px 26px rgba(15, 23, 42, 0.08);
}

.chat-draft {
  margin: 12px 0 0;
  font-size: 0.92rem;
}

.shake {
  animation: shake 0.45s ease;
}

@keyframes shake {
  0%,
  100% {
    transform: translateX(0);
  }
  25% {
    transform: translateX(-6px);
  }
  50% {
    transform: translateX(6px);
  }
  75% {
    transform: translateX(-4px);
  }
}

@keyframes chosenCard {
  0% {
    transform: translateY(-6px) rotate(var(--rot, 0deg)) scale(1.02);
  }
  45% {
    transform: translateY(-18px) rotate(calc(var(--rot, 0deg) * -1)) scale(1.06);
  }
  100% {
    transform: translateY(-10px) rotate(0deg) scale(1.04);
  }
}

@keyframes revealCard {
  0% {
    opacity: 0;
    transform: translateY(14px) scale(0.98);
  }
  100% {
    opacity: 1;
    transform: translateY(0) scale(1);
  }
}

@keyframes cardShine {
  0% {
    transform: translateX(0) rotate(18deg);
  }
  100% {
    transform: translateX(320%) rotate(18deg);
  }
}

@media (max-width: 520px) {
  .topbar-inner {
    flex-direction: column;
    align-items: flex-start;
  }
}