/**
 * CRIOS Nova Unified Design System
 * Core design tokens and reusable styles
 * Based on psychology principles: Cognitive Load Management, Visual Hierarchy, Professional Trust
 */

/* ===========================
   Design Tokens - CSS Variables
   =========================== */

:root {
  /* Color Palette - Dark Theme (Default) */
  --bg-primary: #0a0a0b;      /* Pure black - reduces cognitive load */
  --bg-secondary: #0d1117;    /* Deep space - creates depth */
  --bg-tertiary: #151516;     /* Dark gray - panel backgrounds */
  --bg-quaternary: #1a1a1b;   /* Slightly lighter - headers */

  /* Accent Colors - Blue spectrum for trust and intelligence */
  --accent-primary: #64c8ff;   /* Cyan blue - clarity and precision */
  --accent-secondary: #4080ff; /* Royal blue - trust and stability */
  --accent-tertiary: #0066cc;  /* Deep blue - professionalism */
  --accent-hover: #7dd3ff;     /* Lighter cyan for hover states */

  /* Semantic Colors */
  --success: #00ff88;          /* Green - positive results */
  --warning: #ffaa00;          /* Amber - attention needed */
  --danger: #ff4444;           /* Red - errors or violations */
  --info: #64c8ff;            /* Cyan - informational */

  /* Text Colors */
  --text-primary: #e0e0e0;     /* Main text */
  --text-secondary: #a9b2c0;   /* Secondary text */
  --text-muted: #7a8494;       /* Muted/disabled text */
  --text-inverse: #0a0a0b;     /* For light backgrounds */

  /* Surface Colors */
  --surface: rgba(255, 255, 255, 0.03);
  --surface-hover: rgba(255, 255, 255, 0.05);
  --surface-strong: rgba(255, 255, 255, 0.08);
  --border-soft: rgba(255, 255, 255, 0.08);
  --border-strong: rgba(255, 255, 255, 0.12);

  /* Spacing Scale (8px base unit) */
  --spacing-unit: 8px;
  --spacing-xs: 4px;
  --spacing-sm: 8px;
  --spacing-md: 16px;
  --spacing-lg: 24px;
  --spacing-xl: 32px;
  --spacing-2xl: 48px;
  --spacing-3xl: 64px;

  /* Typography */
  --font-primary: 'Inter', -apple-system, BlinkMacSystemFont, 'Segoe UI', sans-serif;
  --font-mono: 'Monaco', 'Menlo', 'Consolas', monospace;
  --font-data: 'Roboto Mono', 'Monaco', monospace;

  /* Font Sizes */
  --text-xs: 11px;
  --text-sm: 13px;
  --text-base: 15px;
  --text-lg: 18px;
  --text-xl: 24px;
  --text-2xl: 32px;
  --text-3xl: 48px;

  /* Font Weights */
  --font-normal: 400;
  --font-medium: 500;
  --font-semibold: 600;
  --font-bold: 700;

  /* Border Radius */
  --radius-sm: 4px;
  --radius-md: 8px;
  --radius-lg: 12px;
  --radius-xl: 16px;
  --radius-2xl: 24px;
  --radius-full: 9999px;

  /* Shadows */
  --shadow-sm: 0 1px 3px rgba(0, 0, 0, 0.12);
  --shadow-md: 0 4px 6px rgba(0, 0, 0, 0.15);
  --shadow-lg: 0 10px 25px rgba(0, 0, 0, 0.2);
  --shadow-xl: 0 20px 40px rgba(0, 0, 0, 0.25);
  --shadow-glow: 0 0 20px rgba(100, 200, 255, 0.15);

  /* Transitions */
  --transition-fast: 150ms cubic-bezier(0.4, 0, 0.2, 1);
  --transition-base: 200ms cubic-bezier(0.4, 0, 0.2, 1);
  --transition-slow: 300ms cubic-bezier(0.4, 0, 0.2, 1);

  /* Z-index Scale */
  --z-base: 0;
  --z-dropdown: 100;
  --z-sticky: 200;
  --z-overlay: 300;
  --z-modal: 400;
  --z-tooltip: 500;
  --z-notification: 600;
}

/* Light Theme Override */
[data-theme="light"] {
  --bg-primary: #ffffff;
  --bg-secondary: #f8f9fa;
  --bg-tertiary: #e9ecef;
  --bg-quaternary: #dee2e6;
  --text-primary: #1a1a1a;
  --text-secondary: #495057;
  --text-muted: #6c757d;
  --surface: rgba(0, 0, 0, 0.03);
  --surface-hover: rgba(0, 0, 0, 0.05);
  --border-soft: rgba(0, 0, 0, 0.08);
}

/* High Contrast Mode */
@media (prefers-contrast: high) {
  :root {
    --bg-primary: #000000;
    --text-primary: #ffffff;
    --border-soft: rgba(255, 255, 255, 0.2);
    --border-strong: rgba(255, 255, 255, 0.4);
  }
}

/* ===========================
   Base Styles
   =========================== */

* {
  margin: 0;
  padding: 0;
  box-sizing: border-box;
}

body {
  font-family: var(--font-primary);
  background: var(--bg-primary);
  color: var(--text-primary);
  font-size: var(--text-base);
  line-height: 1.6;
  -webkit-font-smoothing: antialiased;
  -moz-osx-font-smoothing: grayscale;
}

/* ===========================
   Component Classes
   =========================== */

/* Glass Morphism Card */
.glass-card {
  background: var(--surface);
  backdrop-filter: blur(10px);
  -webkit-backdrop-filter: blur(10px);
  border: 1px solid var(--border-soft);
  border-radius: var(--radius-lg);
  padding: var(--spacing-lg);
  transition: all var(--transition-base);
}

.glass-card:hover {
  background: var(--surface-hover);
  border-color: var(--accent-primary);
  transform: translateY(-2px);
  box-shadow: var(--shadow-glow);
}

/* Primary Button */
.btn-primary {
  background: linear-gradient(135deg, var(--accent-secondary) 0%, var(--accent-tertiary) 100%);
  border: none;
  border-radius: var(--radius-md);
  padding: var(--spacing-sm) var(--spacing-lg);
  color: white;
  font-weight: var(--font-semibold);
  font-size: var(--text-base);
  cursor: pointer;
  transition: all var(--transition-base);
  position: relative;
  overflow: hidden;
}

.btn-primary::before {
  content: '';
  position: absolute;
  top: 0;
  left: -100%;
  width: 100%;
  height: 100%;
  background: linear-gradient(90deg, transparent, rgba(255, 255, 255, 0.2), transparent);
  transition: left 0.5s;
}

.btn-primary:hover::before {
  left: 100%;
}

.btn-primary:hover {
  transform: translateY(-1px);
  box-shadow: 0 4px 15px rgba(64, 128, 255, 0.3);
}

.btn-primary:active {
  transform: translateY(0);
}

/* Secondary Button */
.btn-secondary {
  background: var(--surface);
  border: 1px solid var(--border-soft);
  border-radius: var(--radius-md);
  padding: var(--spacing-sm) var(--spacing-lg);
  color: var(--text-primary);
  font-weight: var(--font-medium);
  font-size: var(--text-base);
  cursor: pointer;
  transition: all var(--transition-base);
}

.btn-secondary:hover {
  background: var(--surface-hover);
  border-color: var(--accent-primary);
}

/* Navigation */
.nav-primary {
  background: linear-gradient(180deg, var(--bg-quaternary) 0%, var(--bg-tertiary) 100%);
  border-bottom: 1px solid var(--border-soft);
  height: 52px;
  display: flex;
  align-items: center;
  padding: 0 var(--spacing-lg);
  position: fixed;
  top: 0;
  width: 100%;
  z-index: var(--z-sticky);
}

.nav-tab {
  padding: var(--spacing-sm) var(--spacing-md);
  color: var(--text-secondary);
  text-decoration: none;
  border-bottom: 2px solid transparent;
  transition: all var(--transition-base);
  cursor: pointer;
}

.nav-tab:hover {
  color: var(--text-primary);
}

.nav-tab.active {
  color: var(--accent-primary);
  border-bottom-color: var(--accent-primary);
}

/* Data Table */
.data-table {
  background: var(--bg-secondary);
  border-radius: var(--radius-lg);
  overflow: hidden;
  box-shadow: var(--shadow-md);
}

.data-table table {
  width: 100%;
  border-collapse: collapse;
}

.data-table th {
  background: var(--surface);
  padding: var(--spacing-md);
  text-align: left;
  font-size: var(--text-xs);
  text-transform: uppercase;
  letter-spacing: 0.5px;
  color: var(--text-muted);
  font-weight: var(--font-semibold);
}

.data-table td {
  padding: var(--spacing-md);
  border-top: 1px solid var(--border-soft);
  color: var(--text-primary);
}

.data-table tr:hover {
  background: rgba(100, 200, 255, 0.03);
}

/* Status Chips */
.status-chip {
  display: inline-flex;
  align-items: center;
  padding: var(--spacing-xs) var(--spacing-sm);
  border-radius: var(--radius-full);
  font-size: var(--text-xs);
  font-weight: var(--font-medium);
}

.status-chip.success {
  background: rgba(0, 255, 136, 0.1);
  color: var(--success);
  border: 1px solid rgba(0, 255, 136, 0.3);
}

.status-chip.warning {
  background: rgba(255, 170, 0, 0.1);
  color: var(--warning);
  border: 1px solid rgba(255, 170, 0, 0.3);
}

.status-chip.danger {
  background: rgba(255, 68, 68, 0.1);
  color: var(--danger);
  border: 1px solid rgba(255, 68, 68, 0.3);
}

.status-chip.info {
  background: rgba(100, 200, 255, 0.1);
  color: var(--info);
  border: 1px solid rgba(100, 200, 255, 0.3);
}

/* Property Cards */
.property-card {
  background: var(--surface);
  border: 1px solid var(--border-soft);
  border-radius: var(--radius-lg);
  padding: var(--spacing-lg);
  text-align: center;
  transition: all var(--transition-base);
}

.property-card:hover {
  transform: translateY(-3px);
  box-shadow: var(--shadow-lg);
  border-color: var(--accent-primary);
}

.property-icon {
  font-size: 2rem;
  color: var(--accent-primary);
  margin-bottom: var(--spacing-sm);
}

.property-label {
  font-size: var(--text-sm);
  color: var(--text-muted);
  text-transform: uppercase;
  letter-spacing: 0.5px;
  margin-bottom: var(--spacing-xs);
}

.property-value {
  font-size: var(--text-2xl);
  font-weight: var(--font-bold);
  color: var(--accent-primary);
}

.property-unit {
  font-size: var(--text-sm);
  color: var(--text-secondary);
  margin-left: var(--spacing-xs);
}

/* Loading Skeleton */
.skeleton {
  background: linear-gradient(
    90deg,
    var(--surface) 25%,
    var(--surface-strong) 50%,
    var(--surface) 75%
  );
  background-size: 200% 100%;
  animation: shimmer 1.5s infinite;
  border-radius: var(--radius-md);
}

@keyframes shimmer {
  0% { background-position: -200% 0; }
  100% { background-position: 200% 0; }
}

/* Loading Spinner */
.loading-spinner {
  width: 40px;
  height: 40px;
  border: 3px solid var(--surface-strong);
  border-top-color: var(--accent-primary);
  border-radius: 50%;
  animation: spin 0.8s linear infinite;
}

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

/* ===========================
   Layout Patterns
   =========================== */

/* Research Workspace */
.research-workspace {
  display: grid;
  grid-template-areas:
    "header header header"
    "sidebar main panel"
    "sidebar main panel"
    "status status status";
  grid-template-columns: 320px 1fr 380px;
  grid-template-rows: 52px 1fr auto 32px;
  gap: 1px;
  background: var(--bg-primary);
  min-height: 100vh;
}

/* Dashboard Layout */
.dashboard-layout {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(320px, 1fr));
  gap: var(--spacing-lg);
  padding: var(--spacing-lg);
  padding-top: calc(52px + var(--spacing-lg));
}

/* Feature Grid */
.feature-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(300px, 1fr));
  gap: var(--spacing-lg);
  margin: var(--spacing-xl) 0;
}

/* ===========================
   Animations
   =========================== */

@keyframes fadeIn {
  from { opacity: 0; }
  to { opacity: 1; }
}

@keyframes fadeInUp {
  from {
    opacity: 0;
    transform: translateY(20px);
  }
  to {
    opacity: 1;
    transform: translateY(0);
  }
}

@keyframes pulse {
  0%, 100% { opacity: 1; }
  50% { opacity: 0.6; }
}

.animate-fadeIn {
  animation: fadeIn var(--transition-slow) ease;
}

.animate-fadeInUp {
  animation: fadeInUp var(--transition-slow) ease;
}

.animate-pulse {
  animation: pulse 2s infinite;
}

/* ===========================
   Utility Classes
   =========================== */

/* Spacing */
.m-0 { margin: 0; }
.m-1 { margin: var(--spacing-xs); }
.m-2 { margin: var(--spacing-sm); }
.m-3 { margin: var(--spacing-md); }
.m-4 { margin: var(--spacing-lg); }
.m-5 { margin: var(--spacing-xl); }

.p-0 { padding: 0; }
.p-1 { padding: var(--spacing-xs); }
.p-2 { padding: var(--spacing-sm); }
.p-3 { padding: var(--spacing-md); }
.p-4 { padding: var(--spacing-lg); }
.p-5 { padding: var(--spacing-xl); }

/* Text */
.text-primary { color: var(--text-primary); }
.text-secondary { color: var(--text-secondary); }
.text-muted { color: var(--text-muted); }
.text-success { color: var(--success); }
.text-warning { color: var(--warning); }
.text-danger { color: var(--danger); }
.text-info { color: var(--info); }

/* Background */
.bg-primary { background: var(--bg-primary); }
.bg-secondary { background: var(--bg-secondary); }
.bg-tertiary { background: var(--bg-tertiary); }

/* Border */
.border { border: 1px solid var(--border-soft); }
.border-strong { border: 1px solid var(--border-strong); }
.rounded { border-radius: var(--radius-md); }
.rounded-lg { border-radius: var(--radius-lg); }

/* Display */
.d-none { display: none; }
.d-block { display: block; }
.d-flex { display: flex; }
.d-grid { display: grid; }

/* Flexbox */
.flex-center {
  display: flex;
  align-items: center;
  justify-content: center;
}

.flex-between {
  display: flex;
  align-items: center;
  justify-content: space-between;
}

/* ===========================
   Accessibility
   =========================== */

/* Focus States */
:focus-visible {
  outline: 2px solid var(--accent-primary);
  outline-offset: 2px;
}

/* Skip Link */
.skip-link {
  position: absolute;
  top: -40px;
  left: 0;
  background: var(--accent-primary);
  color: white;
  padding: var(--spacing-sm);
  text-decoration: none;
  z-index: var(--z-notification);
  border-radius: var(--radius-md);
}

.skip-link:focus {
  top: var(--spacing-sm);
  left: var(--spacing-sm);
}

/* Screen Reader Only */
.sr-only {
  position: absolute;
  width: 1px;
  height: 1px;
  padding: 0;
  margin: -1px;
  overflow: hidden;
  clip: rect(0, 0, 0, 0);
  white-space: nowrap;
  border: 0;
}

/* Reduced Motion */
@media (prefers-reduced-motion: reduce) {
  *,
  *::before,
  *::after {
    animation-duration: 0.01ms !important;
    animation-iteration-count: 1 !important;
    transition-duration: 0.01ms !important;
  }
}

/* ===========================
   Responsive Design
   =========================== */

@media (max-width: 768px) {
  .research-workspace {
    grid-template-columns: 1fr;
    grid-template-areas:
      "header"
      "main"
      "status";
  }

  .dashboard-layout {
    grid-template-columns: 1fr;
    padding: var(--spacing-md);
  }

  .feature-grid {
    grid-template-columns: 1fr;
  }

  .nav-primary {
    padding: 0 var(--spacing-md);
  }

  .hide-mobile {
    display: none;
  }
}

@media (min-width: 1280px) {
  .container {
    max-width: 1280px;
    margin: 0 auto;
  }
}

/* ===========================
   Print Styles
   =========================== */

@media print {
  body {
    background: white;
    color: black;
  }

  .no-print {
    display: none;
  }

  .glass-card {
    border: 1px solid #ccc;
    box-shadow: none;
  }
}