:root {
  color-scheme: dark;
  --void-bg: #030303;
  --void-surface: rgba(255, 255, 255, 0.045);
  --void-surface-muted: rgba(255, 255, 255, 0.03);
  --void-border: rgba(255, 255, 255, 0.08);
  --void-border-strong: rgba(255, 255, 255, 0.16);
  --void-accent: #4dffb3;
  --void-accent-rgb: 77, 255, 179;
  --void-accent-soft: rgba(var(--void-accent-rgb), 0.18);
  --void-text: #e4e4e4;
  --void-muted: rgba(228, 228, 228, 0.72);
  --void-error: #ff6f87;
  --void-radius: 18px;
  font-family: "Inter", "Segoe UI", system-ui, -apple-system, BlinkMacSystemFont,
    "Helvetica Neue", sans-serif;
}

* {
  box-sizing: border-box;
}

body {
  margin: 0;
  min-height: 100vh;
  background: radial-gradient(circle at top, rgba(var(--void-accent-rgb), 0.05), transparent 60%),
    var(--void-bg);
  color: var(--void-text);
}

.main-shell {
  max-width: 1100px;
  margin: 0 auto;
  padding: 32px 24px 64px;
  display: flex;
  flex-direction: column;
  gap: 24px;
}

.top-bar {
  display: flex;
  justify-content: space-between;
  align-items: flex-start;
  flex-wrap: wrap;
  gap: 16px;
}

.brand {
  display: flex;
  flex-direction: column;
  gap: 6px;
}

.brand-title {
  font-size: 1.4rem;
  letter-spacing: 0.18em;
  text-transform: uppercase;
}

.brand-subtitle {
  font-size: 0.77rem;
  color: var(--void-muted);
  letter-spacing: 0.12em;
}

.meta-row {
  display: flex;
  align-items: center;
  gap: 14px;
  flex-wrap: wrap;
}

.meta-chip {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  padding: 8px 14px;
  border-radius: 999px;
  background: var(--void-surface);
  border: 1px solid var(--void-border);
  font-size: 0.78rem;
  letter-spacing: 0.08em;
  text-transform: uppercase;
}

.meta-link {
  color: var(--void-accent);
  text-decoration: none;
  letter-spacing: 0.08em;
  font-size: 0.78rem;
}

.protocol-shell {
  display: flex;
  flex-direction: column;
  gap: 28px;
  background: var(--void-surface-muted);
  border: 1px solid var(--void-border);
  border-radius: var(--void-radius);
  padding: 32px;
}

.protocol-header {
  display: flex;
  flex-direction: column;
  gap: 12px;
}

.protocol-title {
  font-size: 1.8rem;
  letter-spacing: 0.18em;
  text-transform: uppercase;
  margin: 0;
}

.protocol-description {
  margin: 0;
  font-size: 0.98rem;
  line-height: 1.6;
  color: var(--void-muted);
  max-width: 640px;
}

.controls-grid {
  display: grid;
  gap: 20px;
  grid-template-columns: repeat(auto-fit, minmax(240px, 1fr));
}

.control-group {
  display: flex;
  flex-direction: column;
  gap: 10px;
  padding: 16px;
  border-radius: 16px;
  background: var(--void-surface);
  border: 1px solid var(--void-border);
}

.control-label {
  text-transform: uppercase;
  letter-spacing: 0.12em;
  font-size: 0.72rem;
  color: var(--void-muted);
}

.control-input {
  appearance: none;
  padding: 12px 14px;
  border-radius: 12px;
  border: 1px solid var(--void-border);
  background: rgba(0, 0, 0, 0.3);
  color: var(--void-text);
  font-size: 0.92rem;
  font-family: inherit;
}

.control-input:focus {
  outline: none;
  border-color: var(--void-accent);
}

.control-hint {
  font-size: 0.68rem;
  color: var(--void-muted);
  letter-spacing: 0.06em;
}

.table-area {
  display: flex;
  flex-direction: column;
  gap: 32px;
  padding: 32px 24px;
  background: rgba(0, 0, 0, 0.3);
  border: 1px solid var(--void-border);
  border-radius: 16px;
  min-height: 400px;
}

.dealer-zone,
.player-zone {
  display: flex;
  flex-direction: column;
  gap: 16px;
}

.zone-label {
  margin: 0;
  font-size: 0.85rem;
  letter-spacing: 0.14em;
  text-transform: uppercase;
  color: var(--void-muted);
  display: flex;
  align-items: center;
  gap: 12px;
}

.hand-value {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  min-width: 48px;
  padding: 4px 12px;
  border-radius: 8px;
  background: var(--void-surface);
  border: 1px solid var(--void-border);
  font-size: 0.9rem;
  color: var(--void-accent);
}

.card-hand {
  display: flex;
  gap: 12px;
  flex-wrap: wrap;
  min-height: 120px;
  align-items: flex-start;
}

.card {
  width: 80px;
  height: 112px;
  border-radius: 10px;
  background: linear-gradient(145deg, rgba(255, 255, 255, 0.95), rgba(240, 240, 240, 0.9));
  border: 2px solid rgba(0, 0, 0, 0.1);
  display: flex;
  flex-direction: column;
  align-items: center;
  justify-content: center;
  font-size: 1.8rem;
  font-weight: 600;
  color: #1a1a1a;
  position: relative;
  box-shadow: 0 4px 12px rgba(0, 0, 0, 0.3);
  transition: transform 200ms ease;
}

.card--red {
  color: #d32f2f;
}

.card--hidden {
  background: linear-gradient(145deg, rgba(var(--void-accent-rgb), 0.15), rgba(var(--void-accent-rgb), 0.08));
  border-color: var(--void-accent);
  color: var(--void-accent);
  font-size: 1.2rem;
}

.card-suit {
  font-size: 1rem;
  margin-top: 4px;
}

.action-row {
  display: flex;
  gap: 12px;
  flex-wrap: wrap;
}

.action-button {
  appearance: none;
  padding: 14px 24px;
  border-radius: 14px;
  border: 1px solid var(--void-border);
  background: var(--void-surface);
  color: var(--void-text);
  font-size: 0.82rem;
  letter-spacing: 0.12em;
  text-transform: uppercase;
  cursor: pointer;
  transition: all 180ms ease;
  font-family: inherit;
  font-weight: 500;
}

.action-button:hover:not(:disabled) {
  border-color: var(--void-accent);
  background: var(--void-accent-soft);
}

.action-button:disabled {
  opacity: 0.4;
  cursor: not-allowed;
}

.action-button.accent {
  background: var(--void-accent);
  color: #030303;
  border-color: var(--void-accent);
}

.action-button.accent:hover:not(:disabled) {
  background: rgba(var(--void-accent-rgb), 0.85);
}

.result-section {
  min-height: 60px;
  display: flex;
  align-items: center;
  justify-content: center;
}

.result-message {
  margin: 0;
  font-size: 1.1rem;
  letter-spacing: 0.1em;
  text-transform: uppercase;
  text-align: center;
  padding: 16px 24px;
  border-radius: 12px;
  background: var(--void-surface);
  border: 1px solid var(--void-border);
}

.result-message.win {
  color: var(--void-accent);
  border-color: var(--void-accent);
  background: var(--void-accent-soft);
}

.result-message.lose {
  color: var(--void-error);
  border-color: var(--void-error);
  background: rgba(255, 111, 135, 0.12);
}

.result-message.push {
  color: var(--void-muted);
}

.log-section {
  display: flex;
  flex-direction: column;
  gap: 14px;
}

.log-title {
  margin: 0;
  font-size: 0.82rem;
  letter-spacing: 0.14em;
  text-transform: uppercase;
  color: var(--void-muted);
}

.log-list {
  list-style: none;
  margin: 0;
  padding: 0;
  display: flex;
  flex-direction: column;
  gap: 8px;
  max-height: 240px;
  overflow-y: auto;
}

.log-entry {
  padding: 12px 16px;
  border-radius: 10px;
  background: var(--void-surface);
  border: 1px solid var(--void-border);
  font-size: 0.78rem;
  letter-spacing: 0.06em;
  display: flex;
  justify-content: space-between;
  align-items: center;
}

.log-entry.win {
  border-color: rgba(var(--void-accent-rgb), 0.3);
}

.log-entry.lose {
  border-color: rgba(255, 111, 135, 0.3);
}

.status-line {
  margin: 0;
  padding: 14px 18px;
  border-radius: 12px;
  background: var(--void-surface);
  border: 1px solid var(--void-border);
  font-size: 0.78rem;
  letter-spacing: 0.08em;
  text-align: center;
  color: var(--void-muted);
}

@media (max-width: 640px) {
  .card {
    width: 64px;
    height: 90px;
    font-size: 1.4rem;
  }

  .card-suit {
    font-size: 0.85rem;
  }

  .action-row {
    flex-direction: column;
  }

  .action-button {
    width: 100%;
  }
}