:root {
  --bg: #0f1524;
  --bg-soft: #182033;
  --card: #f6f8fc;
  --text: #0f1524;
  --text-soft: #4f5d7a;
  --line: #d5ddeb;
  --accent: #0b7fab;
  --accent-2: #0fbe9b;
  --danger: #be3652;
  --white: #ffffff;
}

* {
  box-sizing: border-box;
}

body {
  margin: 0;
  min-height: 100vh;
  font-family: "Avenir Next", "Segoe UI", sans-serif;
  color: var(--text);
  background:
    radial-gradient(circle at 10% 10%, #1f2f51 0%, transparent 40%),
    radial-gradient(circle at 90% 90%, #11405e 0%, transparent 35%),
    var(--bg);
}

.app-shell {
  max-width: 920px;
  margin: 0 auto;
  padding: 2rem 1rem 3rem;
}

.app-header {
  color: var(--white);
  margin-bottom: 1rem;
}

.eyebrow {
  margin: 0;
  letter-spacing: 0.12em;
  text-transform: uppercase;
  opacity: 0.85;
  font-size: 0.75rem;
}

h1 {
  margin: 0.2rem 0 0.25rem;
  font-size: clamp(2rem, 4vw, 3rem);
}

.subtitle {
  margin: 0;
  opacity: 0.9;
}

.banner {
  margin: 1rem 0;
  padding: 0.7rem 0.9rem;
  border-radius: 10px;
  background: #fef3d8;
  color: #5f4e21;
}

.card {
  background: var(--card);
  border-radius: 16px;
  padding: 1.2rem;
  box-shadow: 0 12px 32px rgba(8, 14, 28, 0.25);
}

h2, h3 {
  margin-top: 0;
}

.field {
  display: grid;
  gap: 0.45rem;
  margin-bottom: 0.9rem;
}

.field span {
  font-size: 0.9rem;
  color: var(--text-soft);
}

input,
select {
  width: 100%;
  border: 1px solid var(--line);
  border-radius: 10px;
  padding: 0.62rem 0.7rem;
  font-size: 1rem;
  background: #fff;
}

input:focus,
select:focus {
  outline: 2px solid #b7e7f5;
  border-color: var(--accent);
}

.actions {
  margin: 0.8rem 0 1rem;
}

.section-block {
  padding: 0.8rem 0;
}

.section-block + .section-block {
  border-top: 1px solid var(--line);
}

.join-block {
  padding-top: 0.8rem;
  border-top: 1px solid var(--line);
}

.btn {
  border: 0;
  border-radius: 10px;
  padding: 0.62rem 0.85rem;
  cursor: pointer;
  font-weight: 700;
  transition: transform 0.14s ease, opacity 0.14s ease;
}

.btn:hover {
  transform: translateY(-1px);
}

.btn:disabled {
  opacity: 0.45;
  cursor: not-allowed;
  transform: none;
}

.btn-primary {
  background: linear-gradient(135deg, var(--accent), var(--accent-2));
  color: var(--white);
}

.btn-secondary {
  background: #1f2840;
  color: var(--white);
}

.btn-ghost {
  background: #e7edf8;
  color: #1f2d48;
}

.btn.small {
  padding: 0.45rem 0.65rem;
  font-size: 0.85rem;
}

.hidden {
  display: none;
}

.lobby-head {
  display: flex;
  justify-content: space-between;
  align-items: center;
  gap: 0.8rem;
}

.meta-grid {
  margin: 0.8rem 0 1.2rem;
  display: grid;
  grid-template-columns: repeat(3, minmax(0, 1fr));
  gap: 0.8rem;
}

.meta {
  border: 1px solid var(--line);
  border-radius: 12px;
  padding: 0.72rem;
  background: #fff;
}

.meta-label {
  margin: 0;
  color: var(--text-soft);
  font-size: 0.8rem;
  text-transform: uppercase;
  letter-spacing: 0.08em;
}

.meta-value {
  margin: 0.26rem 0 0;
  font-size: 1.08rem;
  font-weight: 700;
}

.inline {
  display: flex;
  align-items: center;
  gap: 0.6rem;
}

.lobby-grid {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 0.8rem;
}

.panel {
  border: 1px solid var(--line);
  border-radius: 12px;
  padding: 0.85rem;
  background: #fff;
}

.players-list {
  list-style: none;
  padding: 0;
  margin: 0;
  display: grid;
  gap: 0.45rem;
}

.player-item {
  display: flex;
  justify-content: space-between;
  align-items: center;
  gap: 0.6rem;
  border: 1px solid var(--line);
  border-radius: 10px;
  padding: 0.55rem 0.65rem;
}

.tag {
  padding: 0.2rem 0.42rem;
  border-radius: 999px;
  font-size: 0.75rem;
  color: #fff;
  background: var(--accent);
}

.hint {
  min-height: 1.2rem;
  color: var(--text-soft);
  margin-bottom: 0;
}

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

  .lobby-grid {
    grid-template-columns: 1fr;
  }
}