/* ==========================================================================
   CLEAN & MINIMAL EXECUTIVE DESIGN SYSTEM
   - Soothing, high-contrast, easy-on-the-eyes dark & light palettes
   - Mobile-First & iPad-optimized typography and spacing tokens
   ========================================================================== */

@import url('https://fonts.googleapis.com/css2?family=Plus+Jakarta+Sans:wght@400;500;600;700&family=Prompt:wght@300;400;500;600&family=JetBrains+Mono:wght@400;500;600&display=swap');

:root {
  /* Clean Executive Dark Palette (Default) */
  --bg-base: #0b0f19;
  --bg-surface: #111827;
  --bg-surface-elevated: #1a2234;
  --bg-surface-glass: rgba(17, 24, 39, 0.82);
  --bg-card: rgba(22, 30, 46, 0.75);
  --bg-card-hover: rgba(30, 41, 62, 0.9);
  --bg-input: #0f172a;

  /* Refined Hairline Borders (Not Loud / Cluttered) */
  --border-subtle: rgba(255, 255, 255, 0.07);
  --border-medium: rgba(255, 255, 255, 0.12);
  --border-highlight: rgba(99, 102, 241, 0.35);

  /* Primary Brand & Accents (Calm & Elegant) */
  --primary: #6366f1;
  --primary-hover: #4f46e5;
  --primary-light: rgba(99, 102, 241, 0.12);
  --primary-glow: rgba(99, 102, 241, 0.25);

  --secondary: #06b6d4;
  --secondary-light: rgba(6, 182, 212, 0.12);

  --success: #10b981;
  --success-hover: #059669;
  --success-light: rgba(16, 185, 129, 0.12);
  --success-glow: rgba(16, 185, 129, 0.2);

  --warning: #f59e0b;
  --warning-light: rgba(245, 158, 11, 0.12);
  --warning-glow: rgba(245, 158, 11, 0.2);

  --danger: #f43f5e;
  --danger-light: rgba(244, 63, 94, 0.12);
  --danger-glow: rgba(244, 63, 94, 0.2);

  --info: #38bdf8;
  --info-light: rgba(56, 189, 248, 0.12);

  --purple: #a855f7;
  --purple-light: rgba(168, 85, 247, 0.12);

  /* Clean Typography Colors */
  --text-primary: #f8fafc;
  --text-secondary: #94a3b8;
  --text-muted: #64748b;
  --text-inverse: #0f172a;

  /* Subtle Soft Shadows */
  --shadow-sm: 0 1px 2px 0 rgba(0, 0, 0, 0.15);
  --shadow-md: 0 4px 6px -1px rgba(0, 0, 0, 0.2), 0 2px 4px -2px rgba(0, 0, 0, 0.15);
  --shadow-lg: 0 10px 15px -3px rgba(0, 0, 0, 0.25), 0 4px 6px -4px rgba(0, 0, 0, 0.2);
  --shadow-glow-primary: 0 0 20px rgba(99, 102, 241, 0.15);

  --backdrop-blur: blur(12px);
  --radius-sm: 6px;
  --radius-md: 10px;
  --radius-lg: 14px;
  --radius-xl: 20px;
  --radius-full: 9999px;

  /* Transitions */
  --transition-fast: 0.15s cubic-bezier(0.4, 0, 0.2, 1);
  --transition-normal: 0.25s cubic-bezier(0.4, 0, 0.2, 1);
  --transition-slow: 0.35s cubic-bezier(0.16, 1, 0.3, 1);
}

/* Eye-Friendly Clean Light Theme */
[data-theme="light"] {
  --bg-base: #f8fafc;
  --bg-surface: #ffffff;
  --bg-surface-elevated: #f1f5f9;
  --bg-surface-glass: rgba(255, 255, 255, 0.92);
  --bg-card: #ffffff;
  --bg-card-hover: #f8fafc;
  --bg-input: #f8fafc;

  --border-subtle: rgba(148, 163, 184, 0.18);
  --border-medium: rgba(148, 163, 184, 0.28);
  --border-highlight: rgba(99, 102, 241, 0.3);

  --text-primary: #0f172a;
  --text-secondary: #475569;
  --text-muted: #64748b;
  --text-inverse: #ffffff;

  --shadow-sm: 0 1px 2px 0 rgba(0, 0, 0, 0.04);
  --shadow-md: 0 4px 6px -1px rgba(0, 0, 0, 0.05), 0 2px 4px -2px rgba(0, 0, 0, 0.04);
  --shadow-lg: 0 10px 20px -3px rgba(0, 0, 0, 0.07), 0 4px 6px -4px rgba(0, 0, 0, 0.04);
  --shadow-glow-primary: 0 0 15px rgba(99, 102, 241, 0.1);
}

/* Base Resets */
*, *::before, *::after {
  box-sizing: border-box;
  margin: 0;
  padding: 0;
  -webkit-tap-highlight-color: transparent;
}

html {
  font-size: 15px;
  scroll-behavior: smooth;
  color-scheme: dark light;
}

body {
  font-family: 'Prompt', 'Plus Jakarta Sans', -apple-system, BlinkMacSystemFont, 'Segoe UI', Roboto, sans-serif;
  background-color: var(--bg-base);
  color: var(--text-primary);
  line-height: 1.5;
  min-height: 100vh;
  overflow-x: hidden;
  -webkit-font-smoothing: antialiased;
  -moz-osx-font-smoothing: grayscale;
}

/* Background Ambient Clean Mesh */
body::before {
  content: '';
  position: fixed;
  top: 0;
  left: 0;
  right: 0;
  bottom: 0;
  background: 
    radial-gradient(circle at 15% 15%, rgba(99, 102, 241, 0.05) 0%, transparent 40%),
    radial-gradient(circle at 85% 85%, rgba(6, 182, 212, 0.04) 0%, transparent 40%);
  pointer-events: none;
  z-index: 0;
}

/* Typography Utilities */
h1, h2, h3, h4, h5, h6 {
  font-family: 'Prompt', sans-serif;
  font-weight: 600;
  color: var(--text-primary);
  line-height: 1.25;
}

.font-mono {
  font-family: 'JetBrains Mono', monospace;
}

/* Clean Glass Card */
.glass-card {
  background: var(--bg-card);
  backdrop-filter: var(--backdrop-blur);
  -webkit-backdrop-filter: var(--backdrop-blur);
  border: 1px solid var(--border-subtle);
  border-radius: var(--radius-lg);
  box-shadow: var(--shadow-sm);
  transition: border-color var(--transition-fast), box-shadow var(--transition-fast), transform var(--transition-fast);
}

.glass-card:hover {
  border-color: var(--border-medium);
  box-shadow: var(--shadow-md);
}

/* Clean Button Tokens */
.btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: 0.5rem;
  padding: 0.55rem 1rem;
  font-size: 0.875rem;
  font-weight: 500;
  font-family: 'Prompt', sans-serif;
  border-radius: var(--radius-md);
  border: 1px solid transparent;
  cursor: pointer;
  transition: all var(--transition-fast);
  text-decoration: none;
  white-space: nowrap;
  user-select: none;
  min-height: 38px;
}

.btn-primary {
  background: var(--primary);
  color: #ffffff;
  box-shadow: 0 2px 8px var(--primary-glow);
}

.btn-primary:hover {
  background: var(--primary-hover);
  transform: translateY(-1px);
}

.btn-secondary {
  background: var(--bg-surface-elevated);
  color: var(--text-primary);
  border-color: var(--border-medium);
}

.btn-secondary:hover {
  background: var(--bg-card-hover);
  color: var(--text-primary);
}

.btn-outline {
  background: transparent;
  color: var(--text-secondary);
  border-color: var(--border-subtle);
}

.btn-outline:hover {
  background: var(--bg-surface-elevated);
  color: var(--text-primary);
  border-color: var(--border-medium);
}

.btn-sm {
  padding: 0.4rem 0.75rem;
  font-size: 0.8rem;
  border-radius: var(--radius-sm);
  min-height: 32px;
}

.btn-icon {
  width: 36px;
  height: 36px;
  padding: 0;
  border-radius: var(--radius-md);
  display: inline-flex;
  align-items: center;
  justify-content: center;
}

/* Clean Status Badges */
.badge {
  display: inline-flex;
  align-items: center;
  gap: 0.35rem;
  padding: 0.22rem 0.55rem;
  border-radius: var(--radius-full);
  font-size: 0.75rem;
  font-weight: 500;
  line-height: 1.2;
  white-space: nowrap;
}

.badge-primary {
  background: var(--primary-light);
  color: #818cf8;
  border: 1px solid rgba(99, 102, 241, 0.25);
}

.badge-success {
  background: var(--success-light);
  color: #34d399;
  border: 1px solid rgba(16, 185, 129, 0.25);
}

.badge-warning {
  background: var(--warning-light);
  color: #fbbf24;
  border: 1px solid rgba(245, 158, 11, 0.25);
}

.badge-danger {
  background: var(--danger-light);
  color: #fb7185;
  border: 1px solid rgba(244, 63, 94, 0.25);
}

.badge-neutral {
  background: var(--bg-surface-elevated);
  color: var(--text-secondary);
  border: 1px solid var(--border-subtle);
}

/* Animations */
@keyframes fadeIn {
  from { opacity: 0; transform: translateY(6px); }
  to { opacity: 1; transform: translateY(0); }
}

.animate-fade-in {
  animation: fadeIn 0.25s ease-out forwards;
}

@keyframes spin {
  from { transform: rotate(0deg); }
  to { transform: rotate(360deg); }
}

.animate-spin {
  animation: spin 0.8s linear infinite;
}

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

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

::-webkit-scrollbar-thumb {
  background: var(--border-medium);
  border-radius: var(--radius-full);
}

::-webkit-scrollbar-thumb:hover {
  background: var(--text-muted);
}