/* ── Design tokens ───────────────────────────────────────────── */
:root {
  --c-bg:          #1a2332;
  --c-surface:     rgba(20, 30, 48, 0.82);
  --c-surface-alt: rgba(30, 44, 66, 0.90);
  --c-border:      rgba(100, 160, 220, 0.22);
  --c-border-hi:   rgba(140, 200, 255, 0.55);
  --c-text:        #dce8f5;
  --c-text-dim:    rgba(180, 210, 240, 0.60);
  --c-accent:      #4a9edd;
  --c-accent-hi:   #74bfff;
  --c-danger:      #e05555;
  --c-success:     #4bcc7a;
  --c-warn:        #f0b84a;
  --radius-sm:     6px;
  --radius-md:     10px;
  --radius-lg:     16px;
  --shadow-panel:  0 8px 32px rgba(0,0,0,0.55), 0 2px 8px rgba(0,0,0,0.35);
  --shadow-btn:    0 2px 6px rgba(0,0,0,0.4);
  --blur:          blur(12px);
  --transition:    150ms ease;
  --font-ui:       'Segoe UI', system-ui, -apple-system, sans-serif;
}

/* ── Reset ───────────────────────────────────────────────────── */
* { padding:0; margin:0;
    -webkit-user-select:none; -moz-user-select:none; user-select:none;
    box-sizing: border-box; }

html { width:100%; height:100%; }
body { background: var(--c-bg); font: 12px/1.4 var(--font-ui); width:100%; height:100%; color: var(--c-text); overflow:hidden; }

/* ── Containers ──────────────────────────────────────────────── */
#container { min-width:465px; min-height:465px; width:100%; height:100%; overflow:hidden; text-align:center; }
#container canvas { position:absolute; top:0; left:0; width:100%; height:100%; }
#hub { position:absolute; top:0; left:0; height:100%; width:100%; pointer-events:none; display:block; text-align:center; }

/* ── Hub panels / windows ────────────────────────────────────── */
.hub-panel {
  background: var(--c-surface);
  border: 1px solid var(--c-border);
  border-radius: var(--radius-md);
  box-shadow: var(--shadow-panel);
  -webkit-backdrop-filter: var(--blur);
  backdrop-filter: var(--blur);
  color: var(--c-text);
}

/* ── Buttons ─────────────────────────────────────────────────── */
.hub-btn {
  display: inline-block;
  background: var(--c-surface-alt);
  border: 1px solid var(--c-border);
  border-radius: var(--radius-sm);
  color: var(--c-text);
  font: 600 12px/1 var(--font-ui);
  letter-spacing: 0.04em;
  text-transform: uppercase;
  cursor: pointer;
  pointer-events: auto;
  transition: background var(--transition), border-color var(--transition),
              color var(--transition), transform var(--transition);
  box-shadow: var(--shadow-btn);
}
.hub-btn-select {
  display: inline-block;
  background: var(--c-accent);
  border: 1px solid var(--c-accent-hi);
  border-radius: var(--radius-sm);
  color: #fff;
  font: 600 12px/1 var(--font-ui);
  letter-spacing: 0.04em;
  text-transform: uppercase;
  cursor: pointer;
  pointer-events: auto;
  transition: background var(--transition), border-color var(--transition),
              color var(--transition), transform var(--transition);
  box-shadow: var(--shadow-btn);
}
.hub-btn:hover {
  background: var(--c-accent);
  border-color: var(--c-accent-hi);
  color: #fff;
  transform: translateY(-1px);
}
.selector-title {
  color: var(--c-text-dim);
  font-size:12px; 
  margin-top:4px;
  font-weight:600; 
  letter-spacing:0.06em;
}
.hub-btn:active { transform: translateY(0); }

/* ── Top menu strip ──────────────────────────────────────────── */
.hub-topmenu {
  position: absolute;
  top: 0; left: 0; right: 0;
  height: 36px;
  background: var(--c-surface);
  border-bottom: 1px solid var(--c-border);
  -webkit-backdrop-filter: var(--blur);
  backdrop-filter: var(--blur);
  display: flex;
  align-items: center;
  padding: 0 8px;
  gap: 6px;
  pointer-events: auto;
  z-index: 10;
}
.hub-topmenu .hub-btn {
  height: 26px;
  padding: 0 14px;
  font-size: 11px;
  border-radius: 4px;
}

/* ── Status bar ──────────────────────────────────────────────── */
.hub-statusbar {
  position: absolute;
  bottom: 0; left: 0;
  height: 44px;
  background: var(--c-surface);
  border-top: 1px solid var(--c-border);
  -webkit-backdrop-filter: var(--blur);
  backdrop-filter: var(--blur);
  display: flex;
  align-items: center;
  padding: 0 12px;
  gap: 0;
  pointer-events: none;
  z-index: 10;
}
.hub-stat {
  display: flex;
  flex-direction: column;
  align-items: center;
  padding: 0 16px;
  border-right: 1px solid var(--c-border);
}
.hub-stat:last-child { border-right: none; }
.hub-stat-label {
  font-size: 9px;
  font-weight: 600;
  letter-spacing: 0.08em;
  text-transform: uppercase;
  color: var(--c-text-dim);
  line-height: 1;
  margin-bottom: 2px;
}
.hub-stat-value {
  font-size: 13px;
  font-weight: 700;
  color: var(--c-text);
  line-height: 1;
}

/* ── Speed selector ──────────────────────────────────────────── */
.hub-speed {
  display: flex;
  align-items: center;
  gap: 2px;
  padding: 0 10px;
  border-right: 1px solid var(--c-border);
}
.hub-speed-btn {
  width: 28px;
  height: 24px;
  display: flex;
  align-items: center;
  justify-content: center;
  background: var(--c-surface-alt);
  border: 1px solid var(--c-border);
  border-radius: 4px;
  color: var(--c-text-dim);
  font-size: 11px;
  cursor: pointer;
  pointer-events: auto;
  transition: background var(--transition), color var(--transition);
}
.hub-speed-btn:hover, .hub-speed-btn.select {
  background: var(--c-accent);
  border-color: var(--c-accent-hi);
  color: #fff;
}

/* ── Tool info strip ──────────────────────────────────────────── */
.hub-toolinfo {
  position: absolute;
  top: 40px; right: 12px;
  width: 198px;
  height: 44px;
  font-size: 12px;
  font-weight: 600;
  color: var(--c-text);
  text-align: right;
  letter-spacing: 0.03em;
  pointer-events: none;
}

/* ── RCI indicator ───────────────────────────────────────────── */
#RCI {
  position: absolute;
  bottom: 54px; right: 12px;
  display: flex;
  flex-direction: column;
  align-items: center;
}
.rci-bars {
  display: flex;
  align-items: flex-end;
  gap: 8px;
  height: 32px;
}
.rci-bar {
  width: 10px;
  border-radius: 2px 2px 0 0;
  min-height: 2px;
}
.rci-label {
  font-size: 9px;
  font-weight: 700;
  letter-spacing: 0.15em;
  color: var(--c-text-dim);
  margin-top: 3px;
}

/* ── Slider ──────────────────────────────────────────────────── */
.hub-slider-track {
  border-radius: var(--radius-sm);
  background: rgba(255,255,255,0.08);
  border: 1px solid var(--c-border);
  cursor: w-resize;
  pointer-events: auto;
}
.hub-slider-track:hover { border-color: var(--c-border-hi); }
.hub-slider-fill { border-radius: var(--radius-sm); }

/* ── Notification message ────────────────────────────────────── */
.hub-msg {
  position: absolute;
  bottom: 54px; left: 12px;
  width: 420px;
  font-size: 13px;
  font-weight: 600;
  letter-spacing: 0.02em;
  color: var(--c-warn);
  pointer-events: none;
  text-shadow: 0 1px 4px rgba(0,0,0,0.8);
}

/* ── Loading overlay ─────────────────────────────────────────── */
#hub-loading {
  position: absolute; inset: 0;
  display: flex;
  flex-direction: column;
  align-items: center;
  justify-content: center;
  background: linear-gradient(160deg, #0f1923 0%, #1a2d45 50%, #0d1e2e 100%);
  pointer-events: none;
}
.loading-title {
  font-size: 52px;
  font-weight: 900;
  letter-spacing: 0.12em;
  color: var(--c-text);
  text-shadow: 0 0 40px rgba(74,158,221,0.6), 0 2px 8px rgba(0,0,0,0.8);
  margin-bottom: 8px;
}
.loading-subtitle {
  font-size: 13px;
  font-weight: 600;
  letter-spacing: 0.25em;
  color: var(--c-text-dim);
  text-transform: uppercase;
  margin-bottom: 56px;
}
.loading-status {
  font-size: 20px;
  font-weight: 500;
  color: var(--c-text);
  margin-top: 32px;
  letter-spacing: 0.06em;
  text-shadow:  0 1px 4px rgba(0,0,0,0.8);
}
.loading-spinner {
  width: 52px; height: 52px;
  border: 6px solid rgba(74,158,221,0.15);
  border-top-color: var(--c-accent);
  border-radius: 50%;
  animation: spin 0.9s linear infinite;
}
@keyframes spin { to { transform: rotate(360deg); } }

/* ── Season / time wheel ─────────────────────────────────────── */
.hub-timewheel {
  position: absolute;
  bottom: 54px; left: 12px;
  width: 54px; height: 54px;
  border-radius: 50%;
  background: var(--c-surface-alt);
  border: 1px solid var(--c-border);
  overflow: hidden;
  transform: rotate(45deg);
  pointer-events: auto;
}
.hub-timewheel-cell {
  position: absolute;
  width: 27px; height: 27px;
  cursor: pointer;
  transition: background var(--transition);
}
.hub-timewheel-cell:hover { filter: brightness(1.35); }

/* ── Winter toggle ────────────────────────────────────────────── */
.hub-winter {
  position: absolute;
  bottom: 116px; left: 25px;
  width: 28px; height: 28px;
  border-radius: 50%;
  background: transparent;
  border: 1.5px solid var(--c-border);
  cursor: pointer;
  pointer-events: auto;
  transition: background var(--transition), border-color var(--transition);
}
.hub-winter.on {
  background: rgba(180,220,255,0.35);
  border-color: var(--c-accent-hi);
}

/* ── Window headers ──────────────────────────────────────────── */
.hub-win-header {
  display: flex;
  align-items: center;
  padding: 8px 12px;
  border-bottom: 1px solid var(--c-border);
  gap: 8px;
  pointer-events: none;
  flex-shrink: 0;
}
.hub-win-title {
  flex: 1;
  font-size: 10px;
  font-weight: 700;
  letter-spacing: 0.12em;
  text-transform: uppercase;
  color: var(--c-accent-hi);
}
.hub-win-close {
  width: 20px; height: 20px;
  border-radius: 50%;
  display: flex; align-items: center; justify-content: center;
  background: transparent;
  border: 1px solid var(--c-border);
  color: var(--c-text-dim);
  font-size: 12px; line-height: 1;
  cursor: pointer; pointer-events: auto;
  transition: background var(--transition), border-color var(--transition),
              color var(--transition);
  flex-shrink: 0;
  font-family: var(--font-ui);
}
.hub-win-close:hover {
  background: var(--c-danger);
  border-color: var(--c-danger);
  color: #fff;
}

/* ── Keyboard shortcut badge ─────────────────────────────────── */
.hub-kbd {
  display: inline-block;
  padding: 1px 5px;
  background: rgba(255,255,255,0.05);
  border: 1px solid var(--c-border);
  border-radius: 3px;
  font-size: 9px;
  font-weight: 600;
  color: var(--c-text-dim);
  letter-spacing: 0.03em;
  font-family: var(--font-ui);
}

/* ── New-map modal overlay ───────────────────────────────────── */
.hub-newmap-overlay {
  position: absolute;
  inset: 0;
  display: flex;
  align-items: center;
  justify-content: center;
  background: rgba(8, 14, 24, 0.72);
  z-index: 20;
  pointer-events: auto;
  animation: msgIn 0.2s ease;
}

/* ── Option-button group (Size / Terrain / Difficulty) ────────── */
.hub-option-group {
  display: flex;
  flex-direction: column;
  gap: 5px;
}
.hub-option-label {
  font-size: 9px;
  font-weight: 700;
  letter-spacing: 0.1em;
  text-transform: uppercase;
  color: var(--c-text-dim);
}
.hub-option-btns {
  display: flex;
  gap: 5px;
}
.hub-option-btn {
  flex: 1;
  height: 28px;
  display: flex;
  align-items: center;
  justify-content: center;
  background: var(--c-surface-alt);
  border: 1px solid var(--c-border);
  border-radius: var(--radius-sm);
  color: var(--c-text-dim);
  font-size: 10px;
  font-weight: 600;
  letter-spacing: 0.05em;
  text-transform: uppercase;
  cursor: pointer;
  pointer-events: auto;
  transition: background var(--transition), border-color var(--transition),
              color var(--transition);
}
.hub-option-btn:hover {
  background: rgba(74, 158, 221, 0.22);
  border-color: var(--c-border-hi);
  color: var(--c-text);
}
.hub-option-btn.selected {
  background: var(--c-accent);
  border-color: var(--c-accent-hi);
  color: #fff;
}

/* ── Action buttons inside new-map modal ─────────────────────── */
.hub-newmap-actions {
  display: flex;
  gap: 8px;
  margin-top: 4px;
}
.hub-newmap-actions .hub-btn {
  flex: 1;
  height: 32px;
  padding: 0 8px;
  font-size: 10px;
}
.hub-newmap-actions .hub-btn.primary {
  background: var(--c-accent);
  border-color: var(--c-accent-hi);
  color: #fff;
}
.hub-newmap-actions .hub-btn.primary:hover {
  background: var(--c-accent-hi);
}

/* ── Notification animation ──────────────────────────────────── */
@keyframes msgIn {
  from { opacity: 0; transform: translateY(5px); }
  to   { opacity: 1; transform: translateY(0); }
}
.hub-msg:not(:empty) { animation: msgIn 0.25s ease; }

/* ── Links ───────────────────────────────────────────────────── */
a:link, a:visited { text-decoration:none; color: var(--c-accent); }
a:hover { text-decoration:underline; color: var(--c-accent-hi); }

/* ── Responsive / mobile layout ─────────────────────────────── */
@media (max-width: 600px) {
  /* Enlarge touch targets on top menu */
  .hub-topmenu {
    height: 44px;
    gap: 4px;
    padding: 0 4px;
    overflow-x: auto;
    overflow-y: hidden;
    -webkit-overflow-scrolling: touch;
    scrollbar-width: none;
  }
  .hub-topmenu::-webkit-scrollbar { display: none; }
  .hub-topmenu .hub-btn {
    height: 34px;
    padding: 0 10px;
    font-size: 10px;
    flex-shrink: 0;
  }
  /* Status bar: smaller, horizontally scrollable */
  .hub-statusbar {
    height: 40px;
    padding: 0 6px;
    overflow-x: auto;
    overflow-y: hidden;
    -webkit-overflow-scrolling: touch;
    scrollbar-width: none;
  }
  .hub-statusbar::-webkit-scrollbar { display: none; }
  .hub-stat {
    padding: 0 10px;
    flex-shrink: 0;
  }
  .hub-stat-label { font-size: 8px; }
  .hub-stat-value { font-size: 11px; }
  /* Speed buttons: slightly larger for touch */
  .hub-speed-btn {
    width: 32px;
    height: 30px;
    font-size: 12px;
  }
  /* Notification message: narrower on small screens */
  .hub-msg { width: calc(100vw - 24px); }
  /* Panel windows: constrain width on small screens */
  .hub-panel { max-width: calc(100vw - 20px); }
  /* Loading screen title */
  .loading-title { font-size: 36px; }
  .loading-subtitle { font-size: 11px; margin-bottom: 36px; }
}

@media (max-width: 380px) {
  .hub-topmenu .hub-btn { padding: 0 6px; font-size: 9px; }
  .hub-stat { padding: 0 7px; }
}

@media (max-height: 500px) and (orientation: landscape) {
  /* Landscape phone: compact vertical spacing */
  .hub-topmenu { height: 36px; }
  .hub-statusbar { height: 34px; }
  .hub-stat-value { font-size: 11px; }
  .hub-panel { max-height: calc(100vh - 80px); overflow-y: auto; }
}