:root {
  --bg: #0e1016;
  --bg-panel: rgba(23, 27, 38, 0.95);
  --accent: #ffae42;
  --accent-dark: #d98b1a;
  --text: #f4f5f7;
  --muted: #9aa0b5;
  --success: #4caf50;
  --danger: #ff6b6b;
  font-size: 16px;
}

* {
  box-sizing: border-box;
}

body {
  margin: 0;
  font-family: "Segoe UI", system-ui, -apple-system, sans-serif;
  background: radial-gradient(circle at top, #1f2a44, #0e1016 60%);
  color: var(--text);
  min-height: 100vh;
  display: flex;
  flex-direction: column;
}

img {
  max-width: 100%;
  display: block;
}

.app-header,
.app-footer {
  text-align: center;
  padding: 1.5rem 1rem;
  background: rgba(15, 19, 29, 0.82);
  backdrop-filter: blur(8px);
  border-bottom: 1px solid rgba(255, 255, 255, 0.05);
}

.app-footer {
  border-top: 1px solid rgba(255, 255, 255, 0.05);
  border-bottom: none;
  margin-top: auto;
}

.tagline {
  margin: 0.35rem 0 0;
  color: var(--muted);
  font-size: 1rem;
}

.layout {
  flex: 1;
  display: grid;
  gap: 1.25rem;
  padding: 1.5rem;
  grid-template-columns: repeat(auto-fit, minmax(280px, 1fr));
  align-content: start;
}

.panel {
  background: var(--bg-panel);
  border-radius: 14px;
  padding: 1.2rem 1.35rem 1.6rem;
  box-shadow: 0 18px 40px rgba(0, 0, 0, 0.25);
  display: flex;
  flex-direction: column;
  gap: 1rem;
  min-height: 0;
}

.panel h2 {
  margin: 0;
  font-size: 1.35rem;
  letter-spacing: 0.02em;
}

.panel-header {
  display: flex;
  justify-content: space-between;
  align-items: baseline;
  gap: 1rem;
}

.world-panel {
  grid-column: span 2;
}

@media (max-width: 960px) {
  .layout {
    grid-template-columns: 1fr;
  }
  .world-panel {
    grid-column: span 1;
  }
}

button {
  background: rgba(255, 255, 255, 0.08);
  border: 1px solid rgba(255, 255, 255, 0.08);
  color: var(--text);
  border-radius: 10px;
  padding: 0.55rem 0.85rem;
  cursor: pointer;
  transition: transform 0.15s ease, background 0.2s ease, border 0.2s ease;
  font: inherit;
}

button:hover:not(:disabled) {
  transform: translateY(-1px);
  background: rgba(255, 255, 255, 0.14);
}

button:disabled {
  cursor: not-allowed;
  opacity: 0.6;
}

button.primary {
  background: var(--accent);
  border-color: var(--accent-dark);
  color: #1b1e27;
  font-weight: 600;
}

.build-button {
  display: grid;
  gap: 0.25rem;
  align-items: center;
  text-align: left;
  min-width: 9.5rem;
}

.build-button.active {
  border-color: var(--accent);
  background: rgba(255, 174, 66, 0.2);
}

.build-button--cancel {
  justify-self: flex-end;
}

.build-label {
  font-weight: 600;
}

.build-count {
  font-size: 0.8rem;
  color: var(--muted);
}

.world-toolbar {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(160px, 1fr));
  gap: 0.75rem;
  align-items: stretch;
}

.world-grid {
  display: grid;
  grid-template-columns: repeat(12, minmax(52px, 1fr));
  grid-auto-rows: minmax(52px, 1fr);
  gap: 0.65rem;
  background: rgba(12, 15, 23, 0.7);
  padding: 0.85rem;
  border-radius: 16px;
  border: 1px solid rgba(255, 255, 255, 0.05);
}

.world-tile {
  position: relative;
  border-radius: 12px;
  border: 1px solid rgba(255, 255, 255, 0.05);
  background: rgba(255, 255, 255, 0.04);
  display: flex;
  align-items: center;
  justify-content: center;
  aspect-ratio: 1 / 1;
  min-height: 52px;
  overflow: hidden;
  padding: 0.35rem;
  transition: border 0.2s ease, transform 0.15s ease;
  color: var(--text);
  font: inherit;
}

.world-tile::after {
  content: "";
  position: absolute;
  inset: 0;
  border-radius: inherit;
  box-shadow: inset 0 0 0 1px rgba(255, 255, 255, 0.04);
  pointer-events: none;
}

.world-tile img {
  width: 72%;
  pointer-events: none;
}

.world-tile:hover:not(:disabled) {
  border-color: rgba(255, 255, 255, 0.2);
  transform: translateY(-1px);
}

.world-tile .tile-label {
  position: absolute;
  bottom: 0.35rem;
  left: 0.4rem;
  right: 0.4rem;
  padding: 0.15rem 0.35rem;
  border-radius: 6px;
  background: rgba(10, 13, 19, 0.8);
  font-size: 0.65rem;
  text-align: center;
}

.world-tile--eligible {
  border-color: var(--accent);
  box-shadow: 0 0 0 2px rgba(255, 174, 66, 0.3);
}

.world-tile:focus-visible {
  outline: 2px solid var(--accent);
  outline-offset: 2px;
}

.tile-info {
  background: rgba(255, 255, 255, 0.05);
  border-radius: 10px;
  padding: 0.75rem;
  min-height: 3rem;
}

.inventory-grid,
.storage-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(120px, 1fr));
  gap: 0.75rem;
}

.inventory-item,
.storage-item {
  background: rgba(255, 255, 255, 0.05);
  border-radius: 12px;
  padding: 0.75rem;
  border: 1px solid rgba(255, 255, 255, 0.06);
  display: grid;
  gap: 0.45rem;
}

.inventory-title {
  display: flex;
  align-items: center;
  gap: 0.4rem;
  font-weight: 600;
}

.inventory-title img {
  width: 28px;
  height: 28px;
}

.meta {
  color: var(--muted);
  font-size: 0.85rem;
}

.machine-card {
  background: rgba(255, 255, 255, 0.05);
  border: 1px solid rgba(255, 255, 255, 0.06);
  border-radius: 12px;
  padding: 0.9rem;
  display: grid;
  gap: 0.65rem;
}

.machine-card header {
  display: flex;
  justify-content: space-between;
  align-items: baseline;
}

.machine-card select {
  width: 100%;
  padding: 0.4rem 0.5rem;
  border-radius: 8px;
  border: 1px solid rgba(255, 255, 255, 0.15);
  background: rgba(0, 0, 0, 0.25);
  color: var(--text);
}

.machine-card .status {
  font-size: 0.9rem;
  color: var(--muted);
  line-height: 1.4;
}

.badge {
  padding: 0.2rem 0.45rem;
  border-radius: 999px;
  font-size: 0.75rem;
  background: rgba(255, 255, 255, 0.1);
  border: 1px solid rgba(255, 255, 255, 0.15);
}

.research-status {
  display: grid;
  gap: 0.6rem;
  font-size: 0.95rem;
  background: rgba(255, 255, 255, 0.05);
  padding: 0.9rem;
  border-radius: 12px;
}

.progress {
  height: 8px;
  border-radius: 999px;
  overflow: hidden;
  background: rgba(255, 255, 255, 0.1);
}

.progress-bar {
  height: 100%;
  width: 0;
  background: linear-gradient(135deg, var(--accent), var(--accent-dark));
  transition: width 0.3s ease;
}

.event-log {
  display: grid;
  gap: 0.4rem;
  max-height: 16rem;
  overflow-y: auto;
}

.event-log-item {
  font-size: 0.85rem;
  padding: 0.5rem 0.6rem;
  border-radius: 8px;
  background: rgba(255, 255, 255, 0.04);
  border: 1px solid rgba(255, 255, 255, 0.04);
  color: var(--muted);
}