/* Depths — skin hooks for bb5 (caustics / palettes).
   CSS variables drive water tint, chrome, and dock. Canvas reads --water-* via JS. */

:root {
  /* Palette / water (overridden per location via JS on :root) */
  --water-top: #1a6a8a;
  --water-mid: #0c3d55;
  --water-deep: #041820;
  --water-tint: rgba(20, 120, 160, 0.35);
  --caustic-opacity: 0.22;
  --caustic-speed: 1;
  --ray-opacity: 0.18;
  --bubble-opacity: 0.45;

  /* Chrome UI */
  --chrome-bg: rgba(4, 18, 28, 0.55);
  --chrome-border: rgba(160, 220, 255, 0.18);
  --chrome-text: #e8f6ff;
  --chrome-muted: rgba(200, 230, 245, 0.7);
  --accent: #5ec8e8;
  --accent-soft: rgba(94, 200, 232, 0.25);
  --dock-width: min(280px, 86vw);
  --font-ui: "Outfit", "Segoe UI", system-ui, sans-serif;
  --font-display: "Fraunces", Georgia, serif;
  --radius: 14px;
  --shadow: 0 12px 40px rgba(0, 0, 0, 0.35);
}

*, *::before, *::after { box-sizing: border-box; }
html, body {
  margin: 0;
  height: 100%;
  overflow: hidden;
  background: var(--water-deep);
  color: var(--chrome-text);
  font-family: var(--font-ui);
}

.app { position: relative; width: 100%; height: 100%; }

#sea {
  position: absolute;
  inset: 0;
  width: 100%;
  height: 100%;
  display: block;
  background: linear-gradient(180deg, var(--water-top), var(--water-mid) 45%, var(--water-deep));
}

.chrome {
  position: absolute;
  z-index: 2;
  pointer-events: none;
  left: 0; right: 0;
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 1rem;
  padding: 0.85rem 1.1rem;
}

.chrome.top { top: 0; }
.chrome.bottom { bottom: 0; }

.brand {
  pointer-events: auto;
  display: flex;
  gap: 0.75rem;
  align-items: center;
  padding: 0.55rem 0.85rem;
  background: var(--chrome-bg);
  border: 1px solid var(--chrome-border);
  border-radius: var(--radius);
  backdrop-filter: blur(10px);
  box-shadow: var(--shadow);
}
.brand-mark {
  font-size: 1.4rem;
  color: var(--accent);
  text-shadow: 0 0 18px var(--accent-soft);
}
.brand h1 {
  margin: 0;
  font-family: var(--font-display);
  font-size: 1.2rem;
  font-weight: 500;
  letter-spacing: -0.01em;
}
.tagline {
  margin: 0.1rem 0 0;
  font-size: 0.72rem;
  color: var(--chrome-muted);
}

.status {
  pointer-events: none;
  font-size: 0.8rem;
  color: var(--chrome-muted);
  padding: 0.4rem 0.7rem;
  background: var(--chrome-bg);
  border: 1px solid var(--chrome-border);
  border-radius: 999px;
  backdrop-filter: blur(8px);
}

.loc-meta {
  pointer-events: none;
  margin: 0;
  max-width: min(520px, 70vw);
  font-size: 0.85rem;
  color: var(--chrome-text);
  padding: 0.55rem 0.85rem;
  background: var(--chrome-bg);
  border: 1px solid var(--chrome-border);
  border-radius: var(--radius);
  backdrop-filter: blur(10px);
}

.btn-ghost {
  pointer-events: auto;
  appearance: none;
  border: 1px solid var(--chrome-border);
  background: var(--chrome-bg);
  color: var(--chrome-text);
  border-radius: 999px;
  padding: 0.5rem 1rem;
  font: inherit;
  font-size: 0.85rem;
  cursor: pointer;
  backdrop-filter: blur(8px);
}
.btn-ghost:hover { border-color: var(--accent); color: var(--accent); }

.dock {
  position: absolute;
  z-index: 3;
  top: 50%;
  right: 1rem;
  transform: translateY(-50%);
  width: var(--dock-width);
  max-height: min(70vh, 560px);
  display: flex;
  flex-direction: column;
  gap: 0.5rem;
  padding: 0.85rem;
  background: var(--chrome-bg);
  border: 1px solid var(--chrome-border);
  border-radius: calc(var(--radius) + 4px);
  backdrop-filter: blur(14px);
  box-shadow: var(--shadow);
  overflow: hidden;
  transition: opacity 0.25s ease, transform 0.25s ease;
}
.dock.hidden {
  opacity: 0;
  pointer-events: none;
  transform: translateY(-50%) translateX(12px);
}
.dock-title {
  margin: 0 0 0.25rem;
  font-size: 0.75rem;
  text-transform: uppercase;
  letter-spacing: 0.08em;
  color: var(--chrome-muted);
}
.dock-list {
  overflow: auto;
  display: flex;
  flex-direction: column;
  gap: 0.35rem;
  padding-right: 0.15rem;
}
.loc-btn {
  appearance: none;
  text-align: left;
  border: 1px solid transparent;
  background: transparent;
  color: var(--chrome-text);
  border-radius: 10px;
  padding: 0.55rem 0.65rem;
  cursor: pointer;
  font: inherit;
  transition: background 0.15s ease, border-color 0.15s ease;
}
.loc-btn:hover { background: var(--accent-soft); }
.loc-btn.active {
  background: var(--accent-soft);
  border-color: var(--accent);
}
.loc-btn .name { display: block; font-weight: 600; font-size: 0.9rem; }
.loc-btn .region { display: block; font-size: 0.72rem; color: var(--chrome-muted); margin-top: 0.1rem; }


/* Soft underwater vignette over chrome edges */
.app::after {
  content: "";
  pointer-events: none;
  position: absolute;
  inset: 0;
  z-index: 1;
  background:
    radial-gradient(ellipse at 50% 0%, rgba(180, 230, 255, 0.08), transparent 45%),
    radial-gradient(ellipse at 50% 100%, rgba(0, 10, 20, 0.45), transparent 55%);
}

.loc-btn.active .name { color: var(--accent); }

@media (max-width: 720px) {
  .dock {
    top: auto;
    bottom: 4.2rem;
    right: 0.6rem;
    left: 0.6rem;
    width: auto;
    max-height: 42vh;
    transform: none;
  }
  .dock.hidden { transform: translateY(8px); }
  .brand h1 { font-size: 1rem; }
  .status { display: none; }
}


/* Custom canvas reticle — hide OS cursor over the sea */
#sea {
  cursor: none;
  touch-action: none;
}
#sea:active {
  cursor: none;
}