:root {
  --glass-bg: rgba(50, 50, 50, 0.85);
  --glass-border: rgba(255, 255, 255, 0.14);
  --glass-highlight: rgba(255, 255, 255, 0.18);
  --glass-shadow: 0 24px 80px rgba(0, 0, 0, 0.28);
  --glass-blur: blur(20px) saturate(180%);
  --glass-radius: 16px;
  --glass-radius-sm: 10px;
  --glass-radius-pill: 999px;
  --ease-smooth: cubic-bezier(0.22, 1, 0.36, 1);
  --z-map: 1;
  --z-panel: 30;
  --z-chrome: 40;
  --z-dropdown: 50;
}

.glass-panel {
  position: relative;
  border: 1px solid var(--glass-border);
  border-radius: var(--glass-radius);
  background: transparent;
  box-shadow: var(--glass-shadow);
}

.glass-panel::before {
  content: "";
  position: absolute;
  inset: 0;
  z-index: 0;
  border-radius: inherit;
  background: var(--glass-bg);
  box-shadow:
    inset 0 1px 0 var(--glass-highlight),
    inset 0 -1px 0 rgba(255, 255, 255, 0.04);
  backdrop-filter: var(--glass-blur);
  -webkit-backdrop-filter: var(--glass-blur);
  pointer-events: none;
}

.sidebar.glass-panel > *,
.map-toolbar.glass-panel > * {
  position: relative;
  z-index: 1;
}

.sidebar.glass-panel,
.map-toolbar.glass-panel {
  --glass-bg: rgba(24, 24, 26, 0.58);
}

.glass-surface {
  border: 1px solid var(--glass-border);
  background: var(--glass-bg);
  box-shadow:
    var(--glass-shadow),
    inset 0 1px 0 var(--glass-highlight),
    inset 0 -1px 0 rgba(255, 255, 255, 0.04);
  backdrop-filter: var(--glass-blur);
  -webkit-backdrop-filter: var(--glass-blur);
}

.glass-btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  border: 1px solid rgba(255, 255, 255, 0.12);
  border-radius: var(--glass-radius-sm);
  background: rgba(255, 255, 255, 0.05);
  color: rgba(255, 255, 255, 0.88);
  font-family: inherit;
  font-size: 0.82rem;
  font-weight: 300;
  letter-spacing: 0.04em;
  cursor: pointer;
  transition:
    background 0.25s var(--ease-smooth),
    border-color 0.25s var(--ease-smooth),
    color 0.25s var(--ease-smooth),
    transform 0.25s var(--ease-smooth),
    opacity 0.25s var(--ease-smooth);
}

.glass-btn:hover {
  background: rgba(255, 255, 255, 0.1);
  border-color: rgba(255, 255, 255, 0.22);
  color: #fff;
}

.glass-btn:active {
  transform: scale(0.96);
}

.glass-btn--icon {
  width: 2.25rem;
  height: 2.25rem;
  padding: 0;
  font-size: 1rem;
  line-height: 1;
}

.glass-btn--circle {
  border-radius: 50%;
}

@keyframes glass-panel-enter {
  from {
    opacity: 0;
    transform: scale(0.96) translateY(10px);
  }

  to {
    opacity: 1;
    transform: none;
  }
}

@keyframes glass-panel-exit {
  from {
    opacity: 1;
    transform: none;
  }

  to {
    opacity: 0;
    transform: scale(0.97) translateY(6px);
  }
}

@keyframes glass-backdrop-enter {
  from {
    opacity: 0;
  }

  to {
    opacity: 1;
  }
}

@keyframes glass-backdrop-exit {
  from {
    opacity: 1;
  }

  to {
    opacity: 0;
  }
}

.glass-pill-btn {
  display: flex;
  align-items: center;
  justify-content: center;
  width: 100%;
  padding: 0.65rem 1rem;
  border: 1px solid rgba(255, 255, 255, 0.14);
  border-radius: var(--glass-radius-pill);
  background: rgba(255, 255, 255, 0.07);
  color: rgba(255, 255, 255, 0.9);
  font-family: inherit;
  font-size: 0.78rem;
  font-weight: 300;
  letter-spacing: 0.1em;
  text-transform: uppercase;
  cursor: pointer;
  transition:
    background 0.3s var(--ease-smooth),
    border-color 0.3s var(--ease-smooth),
    transform 0.3s var(--ease-smooth),
    opacity 0.3s var(--ease-smooth);
}

.glass-pill-btn:hover {
  background: rgba(255, 255, 255, 0.12);
  border-color: rgba(255, 255, 255, 0.24);
}

.glass-pill-btn.is-animating {
  animation: glass-pill-enter 0.5s var(--ease-smooth) both;
}

@keyframes glass-pill-enter {
  from {
    opacity: 0;
    transform: translateY(6px) scale(0.97);
  }

  to {
    opacity: 1;
    transform: translateY(0) scale(1);
  }
}

.glass-input {
  width: 100%;
  border: 1px solid rgba(255, 255, 255, 0.12);
  border-radius: var(--glass-radius-pill);
  background: rgba(0, 0, 0, 0.2);
  color: rgba(255, 255, 255, 0.9);
  padding: 0.55rem 0.85rem;
  font: inherit;
  font-size: 0.78rem;
  font-weight: 300;
  letter-spacing: 0.02em;
  transition: border-color 0.25s var(--ease-smooth), background 0.25s var(--ease-smooth);
}

.glass-input:focus {
  outline: none;
  border-color: rgba(255, 255, 255, 0.28);
  background: rgba(0, 0, 0, 0.3);
}

.glass-input::placeholder {
  color: rgba(255, 255, 255, 0.35);
}

.glass-select {
  width: 100%;
  border: 1px solid rgba(255, 255, 255, 0.12);
  border-radius: var(--glass-radius-pill);
  background: rgba(0, 0, 0, 0.25);
  color: rgba(255, 255, 255, 0.9);
  padding: 0.55rem 0.85rem;
  font: inherit;
  font-size: 0.78rem;
  font-weight: 300;
  letter-spacing: 0.04em;
  cursor: pointer;
  transition: border-color 0.25s var(--ease-smooth);
  appearance: none;
  background-image: url("data:image/svg+xml,%3Csvg xmlns='http://www.w3.org/2000/svg' width='10' height='6' viewBox='0 0 10 6'%3E%3Cpath fill='rgba(255,255,255,0.5)' d='M1 1l4 4 4-4'/%3E%3C/svg%3E");
  background-repeat: no-repeat;
  background-position: right 0.85rem center;
  padding-right: 2rem;
}

.glass-select:focus {
  outline: none;
  border-color: rgba(255, 255, 255, 0.28);
}

.glass-select option {
  background: #1a1a1a;
  color: #fff;
}