/* layer-panel.css — layer toggle panel (below brand, in left column) */

.hud-panel-layers {
  /* Lives inside .earth-left-column — narrower than brand panel intentionally */
  border-radius: 0;
  padding: 0;
  width: calc(260px * var(--hud-scale));
  z-index: 10;
  overflow: hidden;
  margin-top: calc(12px * var(--hud-scale));
}

/* ── Header / drag handle ─────────────────────────────────────── */

.layer-panel-header {
  display: flex;
  align-items: center;
  gap: calc(6px * var(--hud-scale));
  padding: calc(8px * var(--hud-scale)) calc(10px * var(--hud-scale));
  border-bottom: 1px solid var(--hud-line);
  cursor: grab;
  user-select: none;
}

.layer-panel-header:active {
  cursor: grabbing;
}

.layer-panel-icon {
  flex-shrink: 0;
  font-size: calc(15px * var(--hud-scale));
  color: var(--hud-text-soft);
  line-height: 1;
  font-variation-settings: 'FILL' 0, 'wght' 400, 'GRAD' 0, 'opsz' 20;
  pointer-events: none;
}

.layer-panel-title {
  flex: 1 1 auto;
  margin: 0;
  color: var(--hud-text-soft);
  font-size: var(--hud-panel-header-title-size);
  font-weight: 600;
  letter-spacing: 0.04em;
  line-height: 1.2;
}

/* ── Collapse / generic icon button ──────────────────────────── */

.layer-panel-btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  padding: calc(7px * var(--hud-scale));
  border: 1px solid transparent;
  border-radius: calc(4px * var(--hud-scale));
  background: transparent;
  color: var(--hud-text-muted);
  cursor: pointer;
  flex-shrink: 0;
  transition:
    background 0.18s ease,
    border-color 0.18s ease,
    color 0.18s ease,
    transform 0.18s ease,
    opacity 0.18s ease;
}

.layer-panel-btn:hover {
  background: rgba(255, 255, 255, 0.08);
  border-color: rgba(225, 239, 255, 0.14);
  color: var(--hud-accent-strong);
}

.layer-panel-btn .material-symbols-rounded {
  font-size: calc(16px * var(--hud-scale));
  line-height: 1;
  pointer-events: none;
  transition: color 0.18s ease;
  font-variation-settings: 'FILL' 0, 'wght' 400, 'GRAD' 0, 'opsz' 20;
}

/* ── Search bar ───────────────────────────────────────────────── */

.layer-panel-search {
  padding: calc(6px * var(--hud-scale)) calc(8px * var(--hud-scale));
  border-bottom: 1px solid var(--hud-line);
}

.layer-panel-search-box {
  display: flex;
  align-items: center;
  gap: calc(5px * var(--hud-scale));
  padding: calc(5px * var(--hud-scale)) calc(8px * var(--hud-scale));
  border: 1px solid rgba(201, 225, 247, 0.14);
  border-radius: calc(8px * var(--hud-scale));
  background: rgba(255, 255, 255, 0.04);
  transition: border-color 0.18s ease;
  box-sizing: border-box;
  height: calc(38px * var(--hud-scale));
}

.layer-panel-search-box:focus-within {
  border-color: rgba(201, 225, 247, 0.28);
}

.layer-panel-search-icon {
  flex-shrink: 0;
  color: var(--hud-text-soft);
  line-height: 1;
  pointer-events: none;
}

.layer-panel-search-icon.material-symbols-rounded {
  font-size: calc(20px * var(--hud-scale));
  font-variation-settings: 'FILL' 0, 'wght' 400, 'GRAD' 0, 'opsz' 20;
}

.layer-panel-search-input {
  flex: 1 1 auto;
  min-width: 0;
  border: none;
  background: transparent;
  color: var(--hud-text);
  font-size: calc(0.78rem * var(--hud-scale));
  line-height: 1.4;
  outline: none;
  padding: 0;
}

.layer-panel-search-input::placeholder {
  color: var(--hud-text-soft);
}

/* ── Empty search state ───────────────────────────────────────── */

.layer-panel-empty {
  padding: calc(12px * var(--hud-scale)) calc(10px * var(--hud-scale));
  color: var(--hud-text-soft);
  font-size: calc(0.78rem * var(--hud-scale));
  text-align: center;
}

/* ── Collapsible body ─────────────────────────────────────────── */

.layer-panel-body {
  overflow: hidden;
  max-height: 600px;
  transition: max-height 0.24s ease, opacity 0.18s ease;
  opacity: 1;
}

.layer-panel--collapsed .layer-panel-body {
  max-height: 0;
  opacity: 0;
}

/* ── Layer rows ───────────────────────────────────────────────── */

.layer-panel-list {
  display: flex;
  flex-direction: column;
}

.layer-row {
  display: flex;
  align-items: center;
  gap: calc(8px * var(--hud-scale));
  padding: calc(9px * var(--hud-scale)) calc(10px * var(--hud-scale));
  border-bottom: 1px solid var(--hud-line);
  transition: background 0.14s ease;
}

.layer-row:last-child {
  border-bottom: none;
}

.layer-row:hover {
  background: rgba(255, 255, 255, 0.03);
}

.layer-row-icon {
  flex-shrink: 0;
  font-size: calc(15px * var(--hud-scale));
  color: var(--hud-text-soft);
  line-height: 1;
  font-variation-settings: 'FILL' 0, 'wght' 400, 'GRAD' 0, 'opsz' 20;
  transition: color 0.18s ease;
}

/* Icon brightens when layer is active */
.layer-row:has(.layer-row-toggle.active) .layer-row-icon {
  color: var(--hud-accent);
}

.layer-row-copy {
  flex: 1 1 auto;
  min-width: 0;
  display: flex;
  flex-direction: column;
  gap: calc(1px * var(--hud-scale));
}

.layer-row-label {
  color: var(--hud-text);
  font-size: calc(0.82rem * var(--hud-scale));
  font-weight: 500;
  line-height: 1.2;
  white-space: nowrap;
  overflow: hidden;
  text-overflow: ellipsis;
  transition: color 0.18s ease;
}

.layer-row:has(.layer-row-toggle.active) .layer-row-label {
  color: var(--hud-title);
}

.layer-row-meta {
  color: var(--hud-text-soft);
  font-size: calc(0.58rem * var(--hud-scale));
  letter-spacing: 0.08em;
  text-transform: uppercase;
  line-height: 1.2;
}

/* ── Toggle switch ────────────────────────────────────────────── */

.layer-row-toggle {
  flex-shrink: 0;
  position: relative;
  width: calc(34px * var(--hud-scale));
  height: calc(20px * var(--hud-scale));
  padding: 0;
  border: none;
  background: transparent;
  cursor: pointer;
  transition: opacity 0.18s ease;
}

.layer-row-toggle-track {
  display: block;
  position: absolute;
  inset: 0;
  border-radius: 999px;
  background: rgba(255, 255, 255, 0.08);
  border: 1px solid rgba(215, 229, 242, 0.12);
  transition: background 0.18s ease, border-color 0.18s ease;
}

.layer-row-toggle:disabled {
  cursor: progress;
  opacity: 1;
}

/* Thumb */
.layer-row-toggle-track::after {
  content: "";
  position: absolute;
  top: calc(2px * var(--hud-scale));
  left: calc(2px * var(--hud-scale));
  width: calc(14px * var(--hud-scale));
  height: calc(14px * var(--hud-scale));
  border-radius: 50%;
  background: #c8d8ea;
  box-shadow: 0 2px 6px rgba(1, 8, 18, 0.3);
  transition: transform 0.18s ease, background 0.18s ease;
}

.layer-row-toggle.is-loading .layer-row-toggle-track {
  background: linear-gradient(
    90deg,
    rgba(104, 147, 221, 0.38),
    rgba(143, 185, 255, 0.72),
    rgba(104, 147, 221, 0.38)
  );
  background-size: 180% 100%;
  border-color: rgba(223, 236, 252, 0.28);
  animation: layer-toggle-loading-track 1.2s linear infinite;
}

.layer-row-toggle.is-loading .layer-row-toggle-track::after {
  background: #f0f6ff;
  transform: translateX(calc(7px * var(--hud-scale)));
  animation: layer-toggle-loading-thumb 1s ease-in-out infinite;
}

/* Active (ON) state */
.layer-row-toggle.active .layer-row-toggle-track {
  background: linear-gradient(180deg, rgba(143, 185, 255, 0.72), rgba(104, 147, 221, 0.78));
  border-color: rgba(223, 236, 252, 0.28);
}

.layer-row-toggle.active .layer-row-toggle-track::after {
  background: #f0f6ff;
  transform: translateX(calc(14px * var(--hud-scale)));
}

@keyframes layer-toggle-loading-track {
  0% {
    background-position: 0% 50%;
  }
  100% {
    background-position: 180% 50%;
  }
}

@keyframes layer-toggle-loading-thumb {
  0%,
  100% {
    box-shadow: 0 2px 6px rgba(1, 8, 18, 0.3), 0 0 0 rgba(174, 205, 255, 0.18);
  }
  50% {
    box-shadow: 0 2px 6px rgba(1, 8, 18, 0.3), 0 0 calc(10px * var(--hud-scale)) rgba(174, 205, 255, 0.42);
  }
}

/* Layout-expanded: layer panel slides off with .earth-left-column — no
   individual rule needed since the whole column translates together. */

.layout-mode-mobile .hud-panel-layers {
  position: fixed;
  left: 12px;
  right: 12px;
  bottom: calc(88px + var(--safe-bottom));
  width: auto;
  max-height: min(60vh, 520px);
  margin-top: 0;
  z-index: 220;
  transform: translateY(calc(100% + 28px));
  opacity: 0;
  pointer-events: none;
  transition: transform 0.24s ease, opacity 0.2s ease;
}

.layout-mode-mobile .hud-panel-layers.is-mobile-open {
  transform: translateY(0);
  opacity: 1;
  pointer-events: auto;
}

.layout-mode-mobile .layer-panel-body {
  max-height: min(52vh, 460px);
  overflow: auto;
}