:root {
  /* Premium Palette */
  --bg-body: #f1f5f9;
  /* Slate 100 */
  --glass-bg: rgba(255, 255, 255, 0.7);
  --glass-border: rgba(255, 255, 255, 0.5);
  --glass-shadow: 0 8px 32px rgba(0, 0, 0, 0.05);
}

html,
body {
  height: 100%;
}

body {
  background: var(--bg-body);
  color: var(--text-main);
  /* Subtle pattern can be added here if needed */
}

/* Theme Utilities */
.bg-surface {
  background-color: var(--bg-card);
}

.bg-body {
  background-color: var(--bg-body);
}

.bg-hover {
  background-color: var(--bg-hover);
}

.bg-input {
  background-color: var(--bg-input);
}

.bg-subtle {
  background-color: var(--bg-subtle);
}

.border-border {
  border-color: var(--border-border);
}

.text-text-main {
  color: var(--text-main);
}

.text-text-muted {
  color: var(--text-muted);
}

.divide-border> :not([hidden])~ :not([hidden]) {
  border-color: var(--border-border);
}

/* Glassmorphism Utilities */
.glass-panel {
  background: var(--glass-bg);
  backdrop-filter: blur(12px);
  -webkit-backdrop-filter: blur(12px);
  border: 1px solid var(--glass-border);
  box-shadow: var(--glass-shadow);
}

.glass-header {
  background: rgba(255, 255, 255, 0.85);
  backdrop-filter: blur(12px);
  -webkit-backdrop-filter: blur(12px);
  border-bottom: 1px solid rgba(226, 232, 240, 0.6);
  /* Slate 200/60 */
}

/* App-like scrollbars */
* {
  scrollbar-width: thin;
  scrollbar-color: rgba(148, 163, 184, 0.5) transparent;
  /* Slate 400 */
}

*::-webkit-scrollbar {
  width: 6px;
  height: 6px;
}

*::-webkit-scrollbar-track {
  background: transparent;
}

*::-webkit-scrollbar-thumb {
  background-color: rgba(148, 163, 184, 0.5);
  border-radius: 999px;
}

*::-webkit-scrollbar-thumb:hover {
  background-color: rgba(100, 116, 139, 0.8);
  /* Slate 500 */
}

/* Smooth Focus Rings */
.pln-focus-ring:focus-visible {
  outline: none;
  box-shadow: 0 0 0 2px rgba(255, 255, 255, 0.9), 0 0 0 4px #2563eb;
}

/* Animations */
@keyframes fadeIn {
  from {
    opacity: 0;
    transform: translateY(5px);
  }

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

.animate-fade-in {
  animation: fadeIn 0.3s ease-out forwards;
}