html, body.game-body {
  height: 100%;
  margin: 0;
  overflow: hidden;
  background: #0a1420;
}

.auth-gate {
  height: 100%;
  display: flex;
  flex-direction: column;
  align-items: center;
  justify-content: center;
  gap: 1.5rem;
  color: var(--text-dim);
  text-align: center;
  padding: 0 1.5rem;
}

.auth-gate[hidden] {
  display: none;
}

.game-root {
  position: relative;
  width: 100%;
  height: 100%;
}

#scene {
  display: block;
  width: 100%;
  height: 100%;
}

.game-hud {
  position: fixed;
  top: 0;
  left: 0;
  right: 0;
  z-index: 10;
  display: flex;
  align-items: center;
  gap: 1.25rem;
  padding: 1rem 1.5rem;
  background: linear-gradient(180deg, rgba(5, 6, 10, 0.85), rgba(5, 6, 10, 0));
  pointer-events: none;
}

.game-hud .brand {
  font-weight: 700;
  color: var(--gold-bright);
  pointer-events: auto;
}

.greeting {
  margin: 0;
  flex: 1;
  color: var(--text);
  font-size: 0.9rem;
}

.logout-btn {
  pointer-events: auto;
  background: rgba(18, 16, 22, 0.75);
  border: 1px solid var(--border);
  color: var(--text);
  padding: 0.5rem 1rem;
  border-radius: 999px;
  font-size: 0.8rem;
  cursor: pointer;
  transition: border-color 0.2s ease, color 0.2s ease;
}

.logout-btn:hover {
  border-color: var(--amber);
  color: var(--gold-bright);
}

.nav-icons {
  display: flex;
  gap: 0.5rem;
  pointer-events: auto;
}

.nav-icon-btn {
  display: flex;
  align-items: center;
  justify-content: center;
  width: 38px;
  height: 38px;
  background: rgba(18, 16, 22, 0.75);
  border: 1px solid var(--border);
  border-radius: 999px;
  font-size: 1.1rem;
  text-decoration: none;
  cursor: pointer;
  transition: border-color 0.2s ease, transform 0.15s ease;
}

.nav-icon-btn:hover {
  border-color: var(--amber);
  transform: translateY(-1px);
}

.panel-section {
  margin-top: 0.5rem;
}

.panel-section hr {
  border: none;
  border-top: 1px solid var(--border);
  margin: 0 0 1rem;
}

.panel-section-title {
  margin: 0 0 0.75rem;
  color: var(--gold-bright);
  font-weight: 700;
  font-size: 0.9rem;
  font-family: "Cinzel", serif;
  letter-spacing: 0.02em;
}

.troop-list {
  display: flex;
  flex-direction: column;
  gap: 0.6rem;
}

.troop-row {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 0.75rem;
  background: var(--bg);
  border: 1px solid var(--border);
  border-radius: 8px;
  padding: 0.6rem 0.75rem;
}

.troop-row-info {
  font-size: 0.82rem;
  color: var(--text-dim);
  line-height: 1.4;
}

.troop-row-info strong {
  color: var(--text);
}

.troop-row-cost {
  font-size: 0.78rem;
}

.troop-locked {
  font-size: 0.75rem;
  color: var(--text-faint);
  text-align: right;
  max-width: 120px;
}

.troop-train-btn {
  width: auto;
  padding: 0.5rem 0.9rem;
  font-size: 0.75rem;
  white-space: nowrap;
}

.exchange-row {
  display: flex;
  align-items: center;
  gap: 0.5rem;
  margin-bottom: 0.75rem;
  color: var(--text-dim);
}

.exchange-row select,
#panel-exchange-amount {
  flex: 1;
  background: var(--bg);
  border: 1px solid var(--border);
  border-radius: 8px;
  padding: 0.5rem;
  color: var(--text);
  font-family: inherit;
  font-size: 0.85rem;
}

#panel-exchange-amount {
  width: 100%;
  margin-bottom: 0.75rem;
}

.troop-row input[type="number"] {
  background: var(--bg);
  border: 1px solid var(--border);
  border-radius: 8px;
  padding: 0.4rem;
  color: var(--text);
  font-family: inherit;
  font-size: 0.85rem;
}

.panel-section input[type="text"] {
  width: 100%;
  background: var(--bg);
  border: 1px solid var(--border);
  border-radius: 8px;
  padding: 0.5rem;
  color: var(--text);
  font-family: inherit;
  font-size: 0.85rem;
  box-sizing: border-box;
}

.loading-overlay {
  position: fixed;
  inset: 0;
  z-index: 20;
  display: flex;
  align-items: center;
  justify-content: center;
  background: #0a1420;
  color: var(--text-dim);
  font-size: 0.95rem;
  transition: opacity 0.3s ease;
}

.loading-overlay[hidden] {
  display: none;
}

.resource-bar {
  position: fixed;
  top: 4.25rem;
  left: 1.5rem;
  z-index: 10;
  display: flex;
  gap: 0.75rem;
}

.resource-pill {
  display: flex;
  flex-direction: column;
  gap: 0.25rem;
  background: rgba(18, 16, 22, 0.78);
  border: 1px solid var(--border);
  padding: 0.4rem 0.85rem;
  border-radius: 10px;
  font-size: 0.85rem;
  color: var(--text);
  backdrop-filter: blur(6px);
  min-width: 88px;
}

.resource-pill-top {
  display: flex;
  align-items: center;
  gap: 0.4rem;
}

.resource-pill .icon {
  font-size: 1rem;
}

.resource-pill-fill-track {
  height: 3px;
  border-radius: 999px;
  background: rgba(255, 255, 255, 0.08);
  overflow: hidden;
}

.resource-pill-fill {
  height: 100%;
  background: linear-gradient(90deg, var(--gold) 0%, var(--gold-bright) 100%);
  border-radius: 999px;
  transition: width 0.4s ease;
}

.resource-pill-fill.is-near-full {
  background: linear-gradient(90deg, var(--amber) 0%, var(--danger) 100%);
}

.building-labels {
  position: fixed;
  inset: 0;
  z-index: 8;
  pointer-events: none;
}

.building-label {
  position: absolute;
  transform: translate(-50%, -100%);
  background: rgba(18, 16, 22, 0.8);
  border: 1px solid var(--border);
  color: var(--gold-bright);
  font-size: 0.75rem;
  font-weight: 700;
  padding: 0.2rem 0.55rem;
  border-radius: 999px;
  white-space: nowrap;
}

.building-label.is-upgrading {
  color: var(--amber);
  border-color: var(--amber);
}

.building-panel {
  position: fixed;
  top: 50%;
  left: 50%;
  transform: translate(-50%, -50%);
  z-index: 30;
  width: 340px;
  max-height: min(80vh, 640px);
  overflow-y: auto;
  background:
    radial-gradient(120% 60% at 50% 0%, rgba(216, 168, 79, 0.08), transparent 60%),
    linear-gradient(180deg, var(--panel-raised) 0%, var(--panel) 100%);
  border: 1px solid var(--border);
  border-radius: 14px;
  padding: 1.5rem 1.5rem 1.75rem;
  box-shadow: 0 24px 70px rgba(0, 0, 0, 0.6), inset 0 1px 0 rgba(255, 255, 255, 0.04);
}

.building-panel[hidden] {
  display: none;
}

.panel-corner {
  position: absolute;
  width: 16px;
  height: 16px;
  pointer-events: none;
  border: 2px solid var(--gold);
  opacity: 0.7;
}

.panel-corner-tl { top: 6px; left: 6px; border-right: none; border-bottom: none; }
.panel-corner-tr { top: 6px; right: 6px; border-left: none; border-bottom: none; }
.panel-corner-bl { bottom: 6px; left: 6px; border-right: none; border-top: none; }
.panel-corner-br { bottom: 6px; right: 6px; border-left: none; border-top: none; }

.panel-header {
  display: flex;
  align-items: center;
  gap: 0.85rem;
  margin: 0 0 0.6rem;
  padding-right: 1.5rem;
}

.panel-icon {
  flex: none;
  display: flex;
  align-items: center;
  justify-content: center;
  width: 46px;
  height: 46px;
  font-size: 1.5rem;
  background: radial-gradient(circle at 30% 30%, rgba(216, 168, 79, 0.22), rgba(216, 168, 79, 0.06));
  border: 1px solid var(--border);
  border-radius: 10px;
}

.panel-header-text h3 {
  margin: 0;
  color: var(--gold-bright);
  font-size: 1.2rem;
  line-height: 1.2;
}

.panel-level-badge {
  display: inline-block;
  margin-top: 0.2rem;
  font-size: 0.72rem;
  font-weight: 700;
  letter-spacing: 0.04em;
  text-transform: uppercase;
  color: var(--amber);
  background: rgba(224, 138, 60, 0.12);
  border: 1px solid rgba(224, 138, 60, 0.35);
  padding: 0.15rem 0.55rem;
  border-radius: 999px;
}

.panel-description {
  margin: 0 0 1rem;
  color: var(--text-dim);
  font-size: 0.82rem;
  line-height: 1.5;
  font-style: italic;
}

.panel-effect-row {
  display: flex;
  align-items: stretch;
  gap: 0.5rem;
  margin-bottom: 1rem;
}

.panel-effect-box {
  flex: 1;
  background: var(--bg);
  border: 1px solid var(--border);
  border-radius: 9px;
  padding: 0.55rem 0.7rem;
  min-width: 0;
}

.panel-effect-box-next {
  border-color: rgba(216, 168, 79, 0.4);
}

.panel-effect-label {
  display: block;
  font-size: 0.65rem;
  text-transform: uppercase;
  letter-spacing: 0.05em;
  color: var(--text-faint);
  margin-bottom: 0.2rem;
}

.panel-effect-value {
  display: block;
  font-size: 0.85rem;
  font-weight: 700;
  color: var(--text);
  overflow-wrap: break-word;
}

.panel-effect-box-next .panel-effect-value {
  color: var(--gold-bright);
}

.panel-effect-arrow {
  align-self: center;
  color: var(--text-faint);
  font-size: 0.9rem;
}

.panel-progress {
  height: 6px;
  border-radius: 999px;
  background: rgba(255, 255, 255, 0.08);
  overflow: hidden;
  margin-bottom: 0.5rem;
}

.panel-progress-fill {
  height: 100%;
  width: 0%;
  background: linear-gradient(90deg, var(--amber) 0%, var(--gold-bright) 100%);
  transition: width 0.3s linear;
}

.panel-progress-fill.is-indeterminate {
  width: 35%;
  animation: panel-progress-sweep 1.3s ease-in-out infinite;
}

@keyframes panel-progress-sweep {
  0% { margin-left: 0%; }
  50% { margin-left: 65%; }
  100% { margin-left: 0%; }
}

.panel-level {
  margin: 0 0 1rem;
  color: var(--text-dim);
  font-size: 0.85rem;
}

.panel-cost-label {
  margin: 0 0 0.5rem;
  font-size: 0.7rem;
  text-transform: uppercase;
  letter-spacing: 0.05em;
  color: var(--text-faint);
}

.panel-cost {
  display: flex;
  gap: 0.5rem;
  margin-bottom: 1rem;
  flex-wrap: wrap;
}

.cost-chip {
  display: inline-flex;
  align-items: center;
  gap: 0.3rem;
  background: var(--bg);
  border: 1px solid var(--border);
  border-radius: 999px;
  padding: 0.3rem 0.65rem;
  font-size: 0.8rem;
  font-weight: 600;
  color: var(--success);
}

.cost-chip.is-insufficient {
  color: var(--danger);
  border-color: rgba(227, 123, 123, 0.4);
}

.panel-countdown {
  color: var(--amber);
  font-size: 0.85rem;
  margin: 0 0 1rem;
}

.panel-close {
  position: absolute;
  top: 0.75rem;
  right: 0.9rem;
  background: none;
  border: none;
  color: var(--text-faint);
  font-size: 1.3rem;
  cursor: pointer;
  line-height: 1;
  z-index: 1;
}

.panel-close:hover {
  color: var(--text);
}

.building-panel .cta {
  width: 100%;
  text-align: center;
  border: none;
  cursor: pointer;
  font-family: inherit;
  font-size: 0.85rem;
}

.building-panel .cta:disabled {
  opacity: 0.5;
  cursor: default;
}

.game-hint {
  position: fixed;
  bottom: 1.25rem;
  left: 50%;
  transform: translateX(-50%);
  margin: 0;
  font-size: 0.75rem;
  color: var(--text-faint);
  background: rgba(18, 16, 22, 0.7);
  border: 1px solid var(--border);
  padding: 0.5rem 1rem;
  border-radius: 999px;
  z-index: 10;
  pointer-events: none;
}