: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-warning: #ffb84d;
  --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(255, 184, 77, 0.04), 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-chip span {
  color: var(--void-accent);
}

.meta-link {
  color: var(--void-accent);
  text-decoration: none;
  letter-spacing: 0.08em;
  font-size: 0.78rem;
  transition: opacity 160ms ease;
}

.meta-link:hover {
  opacity: 0.7;
}

.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: 1.6rem;
  letter-spacing: 0.12em;
  text-transform: uppercase;
  margin: 0;
}

.protocol-description {
  font-size: 0.88rem;
  color: var(--void-muted);
  line-height: 1.6;
  margin: 0;
}

.round-info {
  display: grid;
  gap: 16px;
  padding: 24px;
  background: var(--void-surface);
  border: 1px solid var(--void-border);
  border-radius: var(--void-radius);
  text-align: center;
}

.round-info h2 {
  margin: 0;
  font-size: 1.2rem;
  color: var(--void-accent);
  letter-spacing: 0.15em;
  text-transform: uppercase;
}

.round-info p {
  margin: 0;
  font-size: 0.88rem;
  color: var(--void-muted);
  letter-spacing: 0.05em;
}

.multiplier {
  font-size: 2.4rem;
  font-weight: 700;
  color: var(--void-warning);
  margin: 8px 0;
  letter-spacing: 0.05em;
}

.controls-grid {
  display: grid;
  gap: 20px;
}

.control-group {
  display: flex;
  flex-direction: column;
  gap: 10px;
}

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

.control-input {
  padding: 14px 18px;
  font-size: 1rem;
  font-family: inherit;
  background: var(--void-surface);
  border: 1px solid var(--void-border);
  border-radius: 12px;
  color: var(--void-text);
  transition: all 160ms ease;
  text-align: center;
}

.control-input:focus {
  outline: none;
  border-color: var(--void-accent);
  background: rgba(var(--void-accent-rgb), 0.05);
}

.control-hint {
  font-size: 0.72rem;
  color: var(--void-muted);
  letter-spacing: 0.05em;
}

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

.btn {
  padding: 14px 28px;
  font-size: 0.82rem;
  font-weight: 600;
  font-family: inherit;
  letter-spacing: 0.12em;
  text-transform: uppercase;
  border-radius: 12px;
  border: 1px solid var(--void-border);
  background: var(--void-surface);
  color: var(--void-text);
  cursor: pointer;
  transition: all 160ms ease;
}

.btn:hover:not(:disabled) {
  background: var(--void-surface-muted);
  border-color: var(--void-border-strong);
}

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

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

.btn-primary:hover:not(:disabled) {
  background: rgba(var(--void-accent-rgb), 0.9);
  border-color: var(--void-accent);
}

.btn-secondary {
  background: var(--void-warning);
  border-color: var(--void-warning);
  color: #030303;
}

.btn-secondary:hover:not(:disabled) {
  background: rgba(255, 184, 77, 0.9);
  border-color: var(--void-warning);
}

.crate-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(110px, 1fr));
  gap: 16px;
  margin: 24px 0;
}

.crate {
  aspect-ratio: 1;
  background: linear-gradient(145deg, rgba(139, 92, 46, 0.15), rgba(101, 67, 33, 0.25));
  border: 1px solid rgba(139, 92, 46, 0.3);
  border-radius: 12px;
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 3.5rem;
  cursor: pointer;
  transition: all 200ms ease;
  position: relative;
  overflow: hidden;
}

.crate::before {
  content: '';
  position: absolute;
  inset: 0;
  background: linear-gradient(
    145deg,
    rgba(255, 255, 255, 0.08) 0%,
    transparent 50%,
    rgba(0, 0, 0, 0.15) 100%
  );
  opacity: 0;
  transition: opacity 200ms ease;
}

.crate:hover:not(.crate-opened):not(.crate-disabled)::before {
  opacity: 1;
}

.crate:hover:not(.crate-opened):not(.crate-disabled) {
  transform: translateY(-4px);
  border-color: rgba(139, 92, 46, 0.6);
}

.crate-opened {
  cursor: default;
  animation: crateOpen 0.4s ease;
}

.crate-safe {
  background: linear-gradient(145deg, rgba(var(--void-accent-rgb), 0.15), rgba(34, 197, 94, 0.25));
  border-color: var(--void-accent);
}

.crate-bomb {
  background: linear-gradient(145deg, rgba(255, 111, 135, 0.15), rgba(239, 68, 68, 0.25));
  border-color: var(--void-error);
  animation: crateExplode 0.5s ease;
}

.crate-disabled {
  opacity: 0.5;
  cursor: not-allowed;
  filter: grayscale(0.4);
}

@keyframes crateOpen {
  0% { 
    transform: scale(1) rotate(0deg);
  }
  40% { 
    transform: scale(1.12) rotate(6deg);
  }
  70% { 
    transform: scale(0.96) rotate(-4deg);
  }
  100% { 
    transform: scale(1) rotate(0deg);
  }
}

@keyframes crateExplode {
  0% { 
    transform: scale(1);
  }
  25% {
    transform: scale(1.2) rotate(8deg);
  }
  50% {
    transform: scale(0.92) rotate(-6deg);
  }
  75% {
    transform: scale(1.1) rotate(4deg);
  }
  100% { 
    transform: scale(1) rotate(0deg);
  }
}

.log-section {
  display: flex;
  flex-direction: column;
  gap: 12px;
  padding: 20px;
  background: var(--void-surface);
  border: 1px solid var(--void-border);
  border-radius: var(--void-radius);
}

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

.log-line {
  font-size: 0.88rem;
  color: var(--void-text);
  letter-spacing: 0.03em;
  margin: 0;
  padding: 12px 0;
  border-bottom: 1px solid var(--void-border);
}

.log-line:last-child {
  border-bottom: none;
}

.status-line {
  text-align: center;
  font-size: 0.72rem;
  letter-spacing: 0.12em;
  text-transform: uppercase;
  color: var(--void-muted);
  margin: 16px 0 0;
}

.status-line[data-state="ok"] {
  color: var(--void-accent);
}

.status-line[data-state="error"] {
  color: var(--void-error);
}

@media (max-width: 768px) {
  .main-shell {
    padding: 24px 16px 48px;
  }

  .protocol-shell {
    padding: 24px 20px;
  }

  .crate-grid {
    grid-template-columns: repeat(auto-fit, minmax(85px, 1fr));
    gap: 12px;
  }

  .crate {
    font-size: 2.8rem;
  }

  .multiplier {
    font-size: 2rem;
  }
}