/* 
 * INTERVUWS - Design System CSS
 * Generated from Figma UI Design Schema
 * 
 * This stylesheet implements the complete design system with:
 * - Custom color palette (brand blues)
 * - Typography scale
 * - Spacing system
 * - Component styles
 * - Glass morphism effects
 */

/* ============================================
   CSS CUSTOM PROPERTIES (Design Tokens)
   ============================================ */

:root {
  /* Brand Colors - Blue Gradient Palette */
  --color-brand-cyan: #7dd3fc;
  --color-brand-blue: #60a5fa;
  --color-brand-deep: #3b82f6;
  --color-brand-navy: #1e40af;
  
  /* Background Colors */
  --color-bg-primary: #eeecec;
  --color-bg-secondary: #f5f3f3;
  --color-bg-tertiary: #f9f8f8;
  --color-bg-elevated: #ffffff;
  
  /* Glass Morphism */
  --color-surface-glass: rgba(255, 255, 255, 0.6);
  --color-surface-glass-hover: rgba(255, 255, 255, 0.8);
  --color-surface-border: rgba(107, 114, 128, 0.2);
  
  /* Text Colors */
  --color-text-primary: #2b2b2b;
  --color-text-secondary: #4a4a4a;
  --color-text-muted: #6b7280;
  --color-text-brand: #3b82f6;
  
  /* Status Colors */
  --color-success: #10b981;
  --color-warning: #f59e0b;
  --color-error: #ef4444;
  --color-info: #3b82f6;
  
  /* Gradients */
  --gradient-brand: linear-gradient(135deg, #7dd3fc 0%, #3b82f6 100%);
  --gradient-brand-intense: linear-gradient(135deg, #60a5fa 0%, #1e40af 100%);
  --gradient-accent: linear-gradient(90deg, #7dd3fc 0%, #60a5fa 50%, #3b82f6 100%);
  
  /* Glow Effects */
  --glow-cyan: 0 0 20px rgba(125, 211, 252, 0.4), 0 0 40px rgba(125, 211, 252, 0.2);
  --glow-blue: 0 0 20px rgba(96, 165, 250, 0.4), 0 0 40px rgba(96, 165, 250, 0.2);
  
  /* Typography */
  --font-family-base: 'Inter', -apple-system, BlinkMacSystemFont, 'Segoe UI', 'Roboto', sans-serif;
  --font-family-display: 'Inter', -apple-system, BlinkMacSystemFont, 'Segoe UI', 'Roboto', sans-serif;
  
  --text-xs: 0.75rem;      /* 12px */
  --text-sm: 0.875rem;     /* 14px */
  --text-base: 1rem;       /* 16px */
  --text-lg: 1.125rem;     /* 18px */
  --text-xl: 1.25rem;      /* 20px */
  --text-2xl: 1.5rem;      /* 24px */
  --text-3xl: 1.875rem;    /* 30px */
  --text-4xl: 2.25rem;     /* 36px */
  
  --font-weight-normal: 400;
  --font-weight-medium: 500;
  --font-weight-semibold: 600;
  --font-weight-bold: 700;
  
  /* Spacing Scale */
  --spacing-xs: 0.25rem;   /* 4px */
  --spacing-sm: 0.5rem;    /* 8px */
  --spacing-md: 1rem;      /* 16px */
  --spacing-lg: 1.5rem;    /* 24px */
  --spacing-xl: 2rem;      /* 32px */
  --spacing-2xl: 3rem;     /* 48px */
  --spacing-3xl: 4rem;     /* 64px */
  
  /* Border Radius */
  --radius-sm: 0.25rem;    /* 4px */
  --radius-md: 0.5rem;     /* 8px */
  --radius-lg: 0.75rem;    /* 12px */
  --radius-xl: 1rem;       /* 16px */
  --radius-full: 9999px;
  
  /* Shadows */
  --shadow-sm: 0 1px 2px 0 rgba(43, 43, 43, 0.05);
  --shadow-md: 0 4px 6px -1px rgba(43, 43, 43, 0.08), 0 2px 4px -1px rgba(43, 43, 43, 0.05);
  --shadow-lg: 0 10px 15px -3px rgba(43, 43, 43, 0.1), 0 4px 6px -2px rgba(43, 43, 43, 0.05);
  --shadow-xl: 0 20px 25px -5px rgba(43, 43, 43, 0.1), 0 10px 10px -5px rgba(43, 43, 43, 0.04);
  
  /* Transitions */
  --transition-fast: 0.15s cubic-bezier(0.4, 0, 0.2, 1);
  --transition-base: 0.25s cubic-bezier(0.4, 0, 0.2, 1);
  --transition-slow: 0.35s cubic-bezier(0.4, 0, 0.2, 1);
}

/* ============================================
   BASE STYLES
   ============================================ */

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

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

/* ============================================
   TYPOGRAPHY
   ============================================ */

h1, h2, h3, h4, h5, h6 {
  font-family: var(--font-family-display);
  font-weight: var(--font-weight-bold);
  line-height: 1.2;
  color: var(--color-text-primary);
}

h1 { font-size: var(--text-4xl); letter-spacing: -0.02em; }
h2 { font-size: var(--text-3xl); letter-spacing: -0.01em; }
h3 { font-size: var(--text-2xl); }
h4 { font-size: var(--text-xl); }
h5 { font-size: var(--text-lg); }
h6 { font-size: var(--text-base); }

p {
  margin-bottom: var(--spacing-md);
  color: var(--color-text-secondary);
}

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

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

/* ============================================
   BUTTONS
   ============================================ */

.btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: var(--spacing-sm);
  padding: 0.75rem 1.5rem;
  font-size: var(--text-sm);
  font-weight: var(--font-weight-semibold);
  border-radius: var(--radius-lg);
  border: none;
  cursor: pointer;
  transition: all var(--transition-base);
  text-decoration: none;
  white-space: nowrap;
}

.btn-primary {
  background: var(--gradient-brand);
  color: white;
  box-shadow: var(--shadow-md);
}

.btn-primary:hover {
  background: var(--gradient-brand-intense);
  box-shadow: var(--shadow-lg), var(--glow-blue);
  transform: translateY(-2px);
}

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

.btn-secondary {
  background: var(--color-bg-elevated);
  color: var(--color-text-primary);
  border: 1px solid var(--color-surface-border);
  box-shadow: var(--shadow-sm);
}

.btn-secondary:hover {
  background: var(--color-surface-glass);
  border-color: var(--color-brand-blue);
  box-shadow: var(--shadow-md);
}

.btn-ghost {
  background: transparent;
  color: var(--color-text-secondary);
}

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

.btn-sm {
  padding: 0.5rem 1rem;
  font-size: var(--text-xs);
}

.btn-lg {
  padding: 1rem 2rem;
  font-size: var(--text-base);
}

.btn:disabled {
  opacity: 0.5;
  cursor: not-allowed;
  pointer-events: none;
}

/* ============================================
   CARDS
   ============================================ */

.card {
  background: var(--color-bg-elevated);
  border-radius: var(--radius-xl);
  box-shadow: var(--shadow-md);
  overflow: hidden;
  transition: all var(--transition-base);
}

.card:hover {
  box-shadow: var(--shadow-lg);
  transform: translateY(-4px);
}

.card-glass {
  background: var(--color-surface-glass);
  backdrop-filter: blur(10px);
  border: 1px solid var(--color-surface-border);
}

.card-glass:hover {
  background: var(--color-surface-glass-hover);
  box-shadow: var(--shadow-lg), var(--glow-cyan);
}

.card-body {
  padding: var(--spacing-lg);
}

.card-header {
  padding: var(--spacing-lg);
  border-bottom: 1px solid var(--color-surface-border);
}

.card-footer {
  padding: var(--spacing-lg);
  border-top: 1px solid var(--color-surface-border);
  background: var(--color-bg-tertiary);
}

/* ============================================
   FORMS
   ============================================ */

.form-group {
  margin-bottom: var(--spacing-lg);
}

.form-label {
  display: block;
  margin-bottom: var(--spacing-sm);
  font-size: var(--text-sm);
  font-weight: var(--font-weight-medium);
  color: var(--color-text-primary);
}

.form-input,
.form-select,
.form-textarea {
  width: 100%;
  padding: 0.75rem 1rem;
  font-size: var(--text-sm);
  font-family: var(--font-family-base);
  color: var(--color-text-primary);
  background: var(--color-bg-elevated);
  border: 1px solid var(--color-surface-border);
  border-radius: var(--radius-md);
  transition: all var(--transition-fast);
}

.form-input:focus,
.form-select:focus,
.form-textarea:focus {
  outline: none;
  border-color: var(--color-brand-blue);
  box-shadow: 0 0 0 3px rgba(59, 130, 246, 0.1);
}

.form-textarea {
  resize: vertical;
  min-height: 100px;
}

.form-hint {
  display: block;
  margin-top: var(--spacing-xs);
  font-size: var(--text-xs);
  color: var(--color-text-muted);
}

.form-error {
  color: var(--color-error);
}

/* ============================================
   BADGES
   ============================================ */

.badge {
  display: inline-flex;
  align-items: center;
  padding: 0.25rem 0.75rem;
  font-size: var(--text-xs);
  font-weight: var(--font-weight-semibold);
  border-radius: var(--radius-full);
  white-space: nowrap;
}

.badge-primary {
  background: var(--gradient-brand);
  color: white;
}

.badge-success {
  background: var(--color-success);
  color: white;
}

.badge-warning {
  background: var(--color-warning);
  color: white;
}

.badge-error {
  background: var(--color-error);
  color: white;
}

.badge-secondary {
  background: var(--color-bg-secondary);
  color: var(--color-text-secondary);
}

/* ============================================
   CHAT / MESSAGE BUBBLES
   ============================================ */

.message {
  display: flex;
  gap: var(--spacing-md);
  margin-bottom: var(--spacing-lg);
  align-items: flex-start;
}

.message-avatar {
  width: 40px;
  height: 40px;
  border-radius: var(--radius-full);
  display: flex;
  align-items: center;
  justify-content: center;
  flex-shrink: 0;
  font-size: var(--text-lg);
  background: var(--gradient-brand);
  color: white;
  box-shadow: var(--shadow-md);
}

.message-bubble {
  max-width: 70%;
  padding: var(--spacing-md) var(--spacing-lg);
  border-radius: var(--radius-lg);
  line-height: 1.5;
}

.message-ai .message-bubble {
  background: var(--color-surface-glass);
  backdrop-filter: blur(10px);
  border: 1px solid var(--color-surface-border);
  color: var(--color-text-primary);
}

.message-user {
  flex-direction: row-reverse;
}

.message-user .message-bubble {
  background: var(--gradient-brand);
  color: white;
  box-shadow: var(--shadow-md);
}

.message-time {
  font-size: var(--text-xs);
  color: var(--color-text-muted);
  margin-top: var(--spacing-xs);
}

/* ============================================
   PROGRESS BAR
   ============================================ */

.progress-bar {
  width: 100%;
  height: 8px;
  background: var(--color-bg-secondary);
  border-radius: var(--radius-full);
  overflow: hidden;
  position: relative;
}

.progress-fill {
  height: 100%;
  background: var(--gradient-brand);
  border-radius: var(--radius-full);
  transition: width var(--transition-base);
  box-shadow: var(--glow-blue);
}

/* ============================================
   STATS CARDS
   ============================================ */

.stat-card {
  background: var(--color-bg-elevated);
  border-radius: var(--radius-lg);
  padding: var(--spacing-lg);
  box-shadow: var(--shadow-md);
  border: 1px solid var(--color-surface-border);
  transition: all var(--transition-base);
}

.stat-card:hover {
  box-shadow: var(--shadow-lg);
  border-color: var(--color-brand-cyan);
}

.stat-value {
  font-size: var(--text-4xl);
  font-weight: var(--font-weight-bold);
  color: var(--color-brand-deep);
  line-height: 1;
  margin-bottom: var(--spacing-sm);
}

.stat-label {
  font-size: var(--text-xs);
  font-weight: var(--font-weight-semibold);
  text-transform: uppercase;
  letter-spacing: 0.05em;
  color: var(--color-text-muted);
}

/* ============================================
   NAVIGATION
   ============================================ */

.nav-header {
  background: var(--color-surface-glass);
  backdrop-filter: blur(10px);
  border-bottom: 1px solid var(--color-surface-border);
  padding: var(--spacing-md) var(--spacing-xl);
}

.nav-link {
  color: var(--color-text-secondary);
  text-decoration: none;
  padding: var(--spacing-sm) var(--spacing-md);
  border-radius: var(--radius-md);
  transition: all var(--transition-fast);
  font-weight: var(--font-weight-medium);
}

.nav-link:hover {
  color: var(--color-text-brand);
  background: var(--color-bg-secondary);
}

.nav-link.active {
  color: var(--color-text-brand);
  background: var(--gradient-accent);
  background-clip: text;
  -webkit-background-clip: text;
  -webkit-text-fill-color: transparent;
}

/* ============================================
   UTILITIES
   ============================================ */

.container {
  max-width: 1400px;
  margin: 0 auto;
  padding: 0 var(--spacing-xl);
}

.surface {
  background: var(--color-bg-elevated);
  border-radius: var(--radius-xl);
  box-shadow: var(--shadow-md);
}

.glass {
  background: var(--color-surface-glass);
  backdrop-filter: blur(10px);
  border: 1px solid var(--color-surface-border);
}

.shadow-sm { box-shadow: var(--shadow-sm); }
.shadow-md { box-shadow: var(--shadow-md); }
.shadow-lg { box-shadow: var(--shadow-lg); }
.shadow-xl { box-shadow: var(--shadow-xl); }

.glow-cyan { box-shadow: var(--glow-cyan); }
.glow-blue { box-shadow: var(--glow-blue); }

/* Spacing Utilities */
.p-xs { padding: var(--spacing-xs); }
.p-sm { padding: var(--spacing-sm); }
.p-md { padding: var(--spacing-md); }
.p-lg { padding: var(--spacing-lg); }
.p-xl { padding: var(--spacing-xl); }
.p-2xl { padding: var(--spacing-2xl); }

.m-xs { margin: var(--spacing-xs); }
.m-sm { margin: var(--spacing-sm); }
.m-md { margin: var(--spacing-md); }
.m-lg { margin: var(--spacing-lg); }
.m-xl { margin: var(--spacing-xl); }
.m-2xl { margin: var(--spacing-2xl); }

.gap-xs { gap: var(--spacing-xs); }
.gap-sm { gap: var(--spacing-sm); }
.gap-md { gap: var(--spacing-md); }
.gap-lg { gap: var(--spacing-lg); }
.gap-xl { gap: var(--spacing-xl); }

/* Flexbox Utilities */
.flex { display: flex; }
.flex-col { flex-direction: column; }
.items-center { align-items: center; }
.justify-center { justify-content: center; }
.justify-between { justify-content: space-between; }

/* Grid Utilities */
.grid { display: grid; }
.grid-cols-2 { grid-template-columns: repeat(2, 1fr); }
.grid-cols-3 { grid-template-columns: repeat(3, 1fr); }
.grid-cols-4 { grid-template-columns: repeat(4, 1fr); }

/* ============================================
   RESPONSIVE
   ============================================ */

@media (max-width: 768px) {
  :root {
    --text-4xl: 1.875rem;
    --text-3xl: 1.5rem;
    --spacing-xl: 1.5rem;
    --spacing-2xl: 2rem;
  }
  
  .container {
    padding: 0 var(--spacing-md);
  }
  
  .grid-cols-2,
  .grid-cols-3,
  .grid-cols-4 {
    grid-template-columns: 1fr;
  }
  
  .message-bubble {
    max-width: 85%;
  }
}