/* Frosted-glass chrome — same vocabulary as the login.
   Every surface that holds content is a glass card over the harbor backdrop. */

/* ─── Top app bar — translucent dark band ────────────────────────────── */
.app-bar {
  position: sticky;
  top: 0;
  z-index: 40;
  background: var(--glass-2);
  backdrop-filter: saturate(180%) blur(18px);
  -webkit-backdrop-filter: saturate(180%) blur(18px);
  border-bottom: 1px solid var(--glass-bord);
  padding: 12px 18px;
  padding-top: calc(12px + env(safe-area-inset-top));
  display: flex;
  align-items: center;
  gap: 12px;
}
.app-bar__mark {
  width: 34px;
  height: 34px;
  border-radius: 9px;
  overflow: hidden;
  box-shadow: 0 2px 6px rgba(0,0,0,0.4);
  flex-shrink: 0;
}
.app-bar__mark img { width: 100%; height: 100%; display: block; }
.app-bar__title-group { display: flex; flex-direction: column; }
.app-bar__wordmark {
  font: 400 var(--text-lg)/1 var(--font-display);
  letter-spacing: 0.005em;
  color: var(--text);
}
.app-bar__wordmark .v { color: var(--brand-yellow); }
.app-bar__sub {
  font: italic 400 13px/1 var(--font-accent);
  color: var(--text-muted);
  letter-spacing: 0.02em;
  margin-top: 4px;
}
.app-bar__spacer { flex: 1; }
.app-bar__icon {
  width: 36px;
  height: 36px;
  display: flex;
  align-items: center;
  justify-content: center;
  color: var(--text-muted);
  background: transparent;
  border: 0;
  border-radius: var(--radius-full);
  cursor: pointer;
  transition: background var(--duration-fast) var(--ease-out), color var(--duration-fast) var(--ease-out);
}
.app-bar__icon:hover { background: var(--glass); color: var(--text); }
.app-bar__icon svg { width: 20px; height: 20px; stroke: currentColor; fill: none; stroke-width: 1.8; stroke-linecap: round; stroke-linejoin: round; }

/* ─── Glass surface mixin ──────────────────────────────────────────────── */
.glass {
  background: var(--glass);
  backdrop-filter: saturate(160%) blur(20px);
  -webkit-backdrop-filter: saturate(160%) blur(20px);
  border: 1px solid var(--glass-bord);
  box-shadow:
    0 1px 0 rgba(255,255,255,0.06) inset,
    0 20px 40px -16px rgba(0,0,0,0.5);
}

/* ─── Bottom nav — translucent dark band ─────────────────────────────── */
.bottom-nav {
  position: fixed;
  bottom: 0; left: 0; right: 0;
  background: var(--glass-2);
  backdrop-filter: saturate(180%) blur(20px);
  -webkit-backdrop-filter: saturate(180%) blur(20px);
  border-top: 1px solid var(--glass-bord);
  display: flex;
  z-index: 50;
  padding-bottom: env(safe-area-inset-bottom);
}
.bottom-nav__tab {
  flex: 1; display: flex; flex-direction: column; align-items: center; justify-content: center;
  gap: 2px; height: 64px; color: var(--text-muted);
  text-decoration: none; min-height: 44px;
  transition: color var(--duration-fast);
}
.bottom-nav__tab.active {
  color: var(--brand-yellow);
}
.bottom-nav__tab.active .label { color: var(--text); }
.bottom-nav__tab svg { width: 24px; height: 24px; fill: none; stroke: currentColor; stroke-width: 2; }
.bottom-nav__tab .label {
  font-family: var(--font-display);
  font-size: var(--text-xs);
  letter-spacing: 0.16em;
  text-transform: uppercase;
}

.main-scroll {
  padding-bottom: calc(64px + env(safe-area-inset-bottom) + 32px);
  min-height: 100dvh;
}

/* ─── Brand signature ─────────────────────────────────────────────────── */
.signature {
  margin-top: 32px;
  padding: 32px 0 16px;
  border-top: 1px solid var(--glass-bord);
  display: flex;
  flex-direction: column;
  align-items: center;
  gap: 12px;
}
.signature__mark {
  width: 44px;
  height: 44px;
  border-radius: 10px;
  overflow: hidden;
  opacity: 0.9;
}
.signature__mark img { width: 100%; height: 100%; display: block; }
.signature__text {
  font: 400 14px/1.2 var(--font-display);
  letter-spacing: 0.32em;
  text-transform: uppercase;
  color: var(--text-muted);
  display: flex;
  align-items: center;
  gap: 10px;
}
.signature__text .v-mark { color: var(--brand-yellow); }
.signature__version {
  font: 400 italic 14px/1.3 var(--font-accent);
  letter-spacing: 0.02em;
  color: var(--text-muted);
  opacity: 0.7;
}

/* ─── Theme switcher (mockup only) ─────────────────────────────────────── */
.theme-switcher {
  position: fixed;
  bottom: 84px;
  right: 16px;
  z-index: 60;
  background: var(--glass-2);
  backdrop-filter: saturate(180%) blur(20px);
  border: 1px solid var(--glass-bord);
  border-radius: var(--radius-md);
  box-shadow: 0 12px 24px -8px rgba(0,0,0,0.5);
  padding: 10px;
  display: flex;
  flex-direction: column;
  gap: 8px;
  max-width: 220px;
}
.theme-switcher__label {
  font: var(--type-label);
  letter-spacing: 0.24em;
  text-transform: uppercase;
  color: var(--text-muted);
}
.theme-switcher__chips {
  display: flex;
  flex-wrap: wrap;
  gap: 4px;
}
.theme-switcher__chip {
  width: 26px; height: 26px;
  border: 2px solid var(--glass-bord);
  border-radius: var(--radius-full);
  cursor: pointer;
  position: relative;
  transition: transform var(--duration-fast);
}
.theme-switcher__chip:hover { transform: scale(1.1); }
.theme-switcher__chip.active { box-shadow: 0 0 0 2px var(--brand-yellow); }
/* each chip shows that theme's accent over its bg-base */
.theme-switcher__chip[data-theme="ocean-dusk"]   { background: linear-gradient(135deg, #06121f 50%, #4e9fc8 50%); }
.theme-switcher__chip[data-theme="amber-dusk"]   { background: linear-gradient(135deg, #1a0d05 50%, #e89048 50%); }
.theme-switcher__chip[data-theme="sage-dusk"]    { background: linear-gradient(135deg, #081208 50%, #88c068 50%); }
.theme-switcher__chip[data-theme="rose-dusk"]    { background: linear-gradient(135deg, #1a060f 50%, #d878a0 50%); }
.theme-switcher__chip[data-theme="mauve-dusk"]   { background: linear-gradient(135deg, #100618 50%, #b890d8 50%); }
.theme-switcher__chip[data-theme="honey-dusk"]   { background: linear-gradient(135deg, #18120a 50%, #e8c050 50%); }
