/* ===================================
   CSS Variables - Design System
   =================================== */

:root {
  /* Primary Colors - Emerald Green */
  --color-primary: #0CB765;
  --color-primary-hover: #099c53;
  --color-primary-light: rgba(12, 183, 101, 0.12);
  
  /* Neutral Colors - Dark Theme (Default) */
  --color-bg-primary: #0F1729;
  --color-bg-secondary: #1C2540;
  --color-bg-tertiary: #141C33;
  
  /* Text Colors */
  --color-text-primary: #F8FAFC;
  --color-text-secondary: #94A3B8;
  --color-text-tertiary: #64748B;
  
  /* Status Colors */
  --color-success: #34c759;
  --color-warning: #ff9500;
  --color-danger: #ff3b30;
  
  /* Border Colors */
  --color-border-light: rgba(255, 255, 255, 0.05);
  --color-border-medium: rgba(255, 255, 255, 0.1);
  --color-border-dark: rgba(255, 255, 255, 0.2);
  
  /* AI Accent */
  --color-ai-bg: rgba(12, 183, 101, 0.05);
  --color-ai-border: rgba(12, 183, 101, 0.15);
  
  /* Font Family */
  --font-family: -apple-system, BlinkMacSystemFont, 'SF Pro Display', 'Segoe UI', Roboto, sans-serif;
  
  /* Font Sizes */
  --font-size-xs: 11px;
  --font-size-sm: 13px;
  --font-size-base: 15px;
  --font-size-lg: 17px;
  --font-size-xl: 20px;
  --font-size-2xl: 28px;
  
  /* Font Weights */
  --font-weight-normal: 400;
  --font-weight-medium: 500;
  --font-weight-semibold: 600;
  --font-weight-bold: 700;
  
  /* Line Heights */
  --line-height-tight: 1.2;
  --line-height-normal: 1.5;
  --line-height-relaxed: 1.6;
  
  /* Spacing System */
  --spacing-xs: 4px;
  --spacing-sm: 8px;
  --spacing-md: 16px;
  --spacing-lg: 24px;
  --spacing-xl: 32px;
  --spacing-2xl: 48px;
  
  /* Border Radius */
  --radius-sm: 6px;
  --radius-md: 8px;
  --radius-lg: 12px;
  --radius-xl: 16px;
  --radius-full: 9999px;
  
  /* Shadows */
  --shadow-sm: 0 1px 3px rgba(0, 0, 0, 0.2);
  --shadow-md: 0 4px 12px rgba(0, 0, 0, 0.3);
  --shadow-lg: 0 12px 32px rgba(0, 0, 0, 0.4);
  --shadow-xl: 0 20px 48px rgba(0, 0, 0, 0.5);
}

html.light {
  /* Neutral Colors - Light Theme */
  --color-bg-primary: #F8FAFC;
  --color-bg-secondary: #FFFFFF;
  --color-bg-tertiary: #F1F5F9;
  
  /* Text Colors */
  --color-text-primary: #0F172A;
  --color-text-secondary: #475569;
  --color-text-tertiary: #64748B;
  
  /* Border Colors */
  --color-border-light: rgba(15, 23, 42, 0.08);
  --color-border-medium: rgba(15, 23, 42, 0.15);
  --color-border-dark: rgba(15, 23, 42, 0.25);
  
  /* AI Accent */
  --color-ai-bg: rgba(12, 183, 101, 0.04);
  --color-ai-border: rgba(12, 183, 101, 0.1);
  
  /* Shadows */
  --shadow-sm: 0 1px 3px rgba(15, 23, 41, 0.08);
  --shadow-md: 0 4px 12px rgba(15, 23, 41, 0.08);
  --shadow-lg: 0 12px 32px rgba(15, 23, 41, 0.1);
  --shadow-xl: 0 20px 48px rgba(15, 23, 41, 0.12);
}

/* ===================================
   CSS Reset & Base Styles
   =================================== */

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

html {
  font-size: 16px;
  -webkit-font-smoothing: antialiased;
  -moz-osx-font-smoothing: grayscale;
}

body {
  font-family: var(--font-family);
  font-size: var(--font-size-base);
  font-weight: var(--font-weight-normal);
  line-height: var(--line-height-normal);
  color: var(--color-text-primary);
  background-color: var(--color-bg-primary);
  overflow-x: hidden;
}

/* ===================================
   Layout Structure
   =================================== */

body {
  display: flex;
  min-height: 100vh;
}

.main-content {
  flex: 1;
  margin-left: 240px;
  padding: var(--spacing-xl);
  background-color: var(--color-bg-primary);
  min-height: 100vh;
  transition: opacity 0.2s ease;
}

.main-content.transitioning {
  opacity: 0.7;
}

/* ===================================
   Typography
   =================================== */

h1, h2, h3, h4, h5, h6 {
  font-weight: var(--font-weight-semibold);
  line-height: var(--line-height-tight);
  color: var(--color-text-primary);
}

h1 {
  font-size: var(--font-size-2xl);
}

h2 {
  font-size: var(--font-size-xl);
}

h3 {
  font-size: var(--font-size-lg);
}

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

a {
  color: var(--color-primary);
  text-decoration: none;
  transition: color 0.2s ease;
}

a:hover {
  color: var(--color-primary-hover);
}

/* ===================================
   Buttons
   =================================== */

button,
.btn {
  font-family: var(--font-family);
  font-size: var(--font-size-base);
  font-weight: var(--font-weight-medium);
  padding: var(--spacing-sm) var(--spacing-lg);
  border: none;
  border-radius: var(--radius-md);
  cursor: pointer;
  transition: all 0.2s ease, transform 0.1s ease;
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: var(--spacing-sm);
}

button:hover,
.btn:hover {
  transform: translateY(-1px);
  box-shadow: var(--shadow-sm);
}

button:active,
.btn:active {
  transform: translateY(0);
}

.btn-primary {
  background-color: var(--color-primary);
  color: white;
}

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

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

.btn-secondary:hover {
  background-color: var(--color-border-medium);
}

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

.hidden {
  display: none !important;
}

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

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

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

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

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

/* ===================================
   AI Elements - Global Styles
   =================================== */

/* AI Badge - Small label for AI elements */
.ai-badge {
  display: inline-block;
  padding: var(--spacing-xs) var(--spacing-sm);
  background-color: var(--color-ai-bg);
  border: 1px solid var(--color-ai-border);
  border-radius: var(--radius-sm);
  font-size: var(--font-size-xs);
  font-weight: var(--font-weight-semibold);
  color: var(--color-primary);
  text-transform: uppercase;
  letter-spacing: 0.5px;
}

/* AI Label - Text prefix for AI elements */
.ai-label {
  font-size: var(--font-size-xs);
  font-weight: var(--font-weight-semibold);
  color: var(--color-primary);
  text-transform: uppercase;
  letter-spacing: 0.5px;
  margin-bottom: var(--spacing-xs);
}

/* AI Card - Container for AI content */
.ai-card {
  background-color: var(--color-ai-bg);
  border: 1px solid var(--color-ai-border);
  border-radius: var(--radius-md);
  padding: var(--spacing-md);
}

/* AI Panel - Larger container for AI content */
.ai-panel {
  background-color: var(--color-ai-bg);
  border-color: var(--color-ai-border);
}