/* Channel aquarium (channels.html). Builds on site.css variables; every
   class is prefixed with aquarium- so the homepage is unaffected. */

/* Use the available screen width, keeping the shared page padding and credit gutter. */
.aquarium-main {
  max-width: none;
  width: 100%;
}

.aquarium {
  margin: 1.25rem 0 1.5rem;
}

.aquarium-head h2 {
  margin: 0;
  font-size: clamp(1.5rem, 6vw, 2.25rem);
  line-height: 1.1;
  text-shadow: 0 0 16px rgba(41, 224, 255, 0.55);
}

.aquarium-meta {
  margin: 0 0 0.35rem;
}

.aquarium-note,
.aquarium-hint {
  margin: 0 0 0.9rem;
  color: var(--muted);
  font-size: 0.8125rem;
}

.aquarium-hint {
  margin: 0.6rem 0 0;
}

/* The scene area is reserved from the first render, so nothing shifts when
   the loader is replaced by the aquarium. */
.aquarium-stage {
  position: relative;
  height: clamp(22rem, 68vh, 46rem);
  overflow: hidden;
  border: 1px solid var(--line);
  border-radius: var(--radius);
  background:
    radial-gradient(40rem 22rem at 20% 0%, rgba(41, 224, 255, 0.08), transparent 70%),
    radial-gradient(36rem 26rem at 90% 100%, rgba(163, 92, 255, 0.1), transparent 70%),
    repeating-radial-gradient(circle at 30% 40%, rgba(41, 224, 255, 0.025) 0 2px, transparent 2px 46px),
    var(--bg);
  box-shadow: 0 10px 30px rgba(0, 0, 0, 0.35);
}

.aquarium-viewport,
.aquarium-svg {
  position: absolute;
  inset: 0;
  width: 100%;
  height: 100%;
}

.aquarium-svg {
  display: block;
  cursor: grab;
}

.aquarium-svg:active {
  cursor: grabbing;
}

.aquarium-world {
  fill: rgba(41, 224, 255, 0.015);
  stroke: rgba(160, 150, 255, 0.1);
  stroke-width: 2;
  pointer-events: none;
}

.aquarium-node {
  cursor: pointer;
  outline: none;
}

.aquarium-fallback {
  fill: var(--panel-solid);
}

.aquarium-initials {
  fill: var(--cyan);
  font-weight: 800;
  pointer-events: none;
  user-select: none;
}

.aquarium-ring {
  fill: none;
  stroke: rgba(41, 224, 255, 0.45);
  stroke-width: 2;
  pointer-events: none;
}

.aquarium-node.is-active .aquarium-ring {
  stroke: var(--cyan);
  stroke-width: 3;
}

.aquarium-node:focus-visible .aquarium-ring {
  stroke: var(--violet);
  stroke-width: 4;
}

/* --- Controls and detail (outside the camera transform) ----------------- */

.aquarium-controls {
  position: absolute;
  top: 0.6rem;
  right: 0.6rem;
  z-index: 3;
  display: flex;
  gap: 0.35rem;
}

.aquarium-btn {
  min-width: 2.5rem;
  min-height: 2.5rem;
  padding: 0.35rem 0.75rem;
  border: 1px solid var(--line);
  border-radius: 999px;
  background: var(--panel);
  color: var(--text);
  font: inherit;
  font-size: 0.875rem;
  font-weight: 700;
  cursor: pointer;
  touch-action: manipulation;
}

.aquarium-btn:hover {
  border-color: var(--cyan);
}

.aquarium-btn[aria-pressed="true"] {
  border-color: var(--cyan);
  background: rgba(41, 224, 255, 0.14);
}

.aquarium-detail {
  position: absolute;
  z-index: 4;
  max-width: min(18rem, calc(100% - 1.5rem));
  padding: 0.6rem 0.8rem;
  border: 1px solid var(--line);
  border-radius: 12px;
  background: var(--panel-solid);
  box-shadow: 0 10px 30px rgba(0, 0, 0, 0.45);
}

.aquarium-detail--tooltip {
  pointer-events: none;
}

.aquarium-detail--panel {
  left: 0.75rem;
  right: 0.75rem;
  max-width: 22rem;
}

.aquarium-detail--bottom {
  bottom: 0.75rem;
}

.aquarium-detail--top {
  top: 3.6rem;
}

.aquarium-detail-name {
  margin: 0 0 0.35rem;
  font-weight: 700;
  overflow-wrap: anywhere;
}

.aquarium-detail-stats {
  display: flex;
  flex-wrap: wrap;
  gap: 0.25rem 1rem;
  margin: 0;
}

.aquarium-detail-stats dt {
  color: var(--muted);
  font-size: 0.6875rem;
  letter-spacing: 0.06em;
  text-transform: uppercase;
}

.aquarium-detail-stats dd {
  margin: 0;
  font-weight: 700;
  font-variant-numeric: tabular-nums;
}

.aquarium-detail-actions {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 0.75rem;
  margin: 0.6rem 0 0;
}

.aquarium-detail-actions[hidden] {
  display: none;
}

.aquarium-detail-link {
  color: var(--cyan);
  font-weight: 700;
}

/* --- Loader --------------------------------------------------------------- */

.aquarium-loader {
  position: absolute;
  inset: 0;
  z-index: 5;
  display: flex;
  flex-direction: column;
  align-items: center;
  justify-content: center;
  gap: 0.75rem;
  padding: 1.5rem;
  background: rgba(6, 7, 26, 0.88);
  text-align: center;
}

.aquarium-loader[hidden],
.aquarium-controls[hidden],
.aquarium-detail[hidden],
.aquarium-viewport[hidden] {
  display: none;
}

.aquarium-loader-text {
  margin: 0;
  color: var(--text);
  font-weight: 600;
  font-variant-numeric: tabular-nums;
}

.aquarium-message {
  max-width: 28rem;
  margin: 0;
  color: var(--muted);
}

.aquarium-message a {
  color: var(--cyan);
}

.aquarium-message .aquarium-btn {
  margin-top: 0.75rem;
}

.aquarium-progress {
  width: min(16rem, 80%);
  height: 0.5rem;
  border: 0;
  border-radius: 999px;
  overflow: hidden;
  background: rgba(160, 150, 255, 0.15);
  accent-color: var(--cyan);
}

.aquarium-progress::-webkit-progress-bar {
  background: rgba(160, 150, 255, 0.15);
}

.aquarium-progress::-webkit-progress-value {
  background: linear-gradient(90deg, var(--violet), var(--cyan));
}

.aquarium-progress::-moz-progress-bar {
  background: linear-gradient(90deg, var(--violet), var(--cyan));
}

.aquarium-spinner {
  width: 2.25rem;
  height: 2.25rem;
  border: 3px solid rgba(160, 150, 255, 0.2);
  border-top-color: var(--cyan);
  border-right-color: var(--violet);
  border-radius: 50%;
  animation: aquarium-spin 1s linear infinite;
}

/* Without JavaScript only the noscript message is meaningful. */
.aquarium-stage:not([data-js]) .aquarium-spinner,
.aquarium-stage:not([data-js]) .aquarium-loader-text,
.aquarium-stage:not([data-js]) .aquarium-progress,
.aquarium-spinner[hidden],
.aquarium-loader-text[hidden],
.aquarium-progress[hidden],
.aquarium-message[hidden] {
  display: none;
}

@keyframes aquarium-spin {
  to {
    transform: rotate(360deg);
  }
}

@media (min-width: 48rem) {
  .aquarium-stage {
    height: clamp(28rem, 72vh, 52rem);
  }
}

/* site.css already disables animations and transitions; keep a static ring. */
@media (prefers-reduced-motion: reduce) {
  .aquarium-spinner {
    animation: none;
    border-color: var(--cyan);
    border-right-color: var(--violet);
  }
}