/* ==========================================
   Corp.AI - Premium Corporate Learning Platform
   Design System inspired by Freedom Finance
   ========================================== */

:root {
  /* Primary Green Palette - Freedom Finance Style */
  --primary-green: #00B967;
  --primary-green-dark: #009951;
  --primary-green-light: #00D67A;
  --primary-green-bg: rgba(0, 185, 103, 0.08);
  
  /* Neutral Colors */
  --white: #FFFFFF;
  --gray-50: #F9FAFB;
  --gray-100: #F3F4F6;
  --gray-200: #E5E7EB;
  --gray-300: #D1D5DB;
  --gray-400: #9CA3AF;
  --gray-500: #6B7280;
  --gray-600: #4B5563;
  --gray-700: #374151;
  --gray-800: #1F2937;
  --gray-900: #111827;
  
  /* Accent Colors */
  --accent-blue: #3B82F6;
  --accent-yellow: #F59E0B;
  --accent-red: #EF4444;
  --accent-purple: #8B5CF6;
  
  /* Shadows */
  --shadow-sm: 0 1px 2px 0 rgba(0, 0, 0, 0.05);
  --shadow-md: 0 4px 6px -1px rgba(0, 0, 0, 0.1), 0 2px 4px -1px rgba(0, 0, 0, 0.06);
  --shadow-lg: 0 10px 15px -3px rgba(0, 0, 0, 0.1), 0 4px 6px -2px rgba(0, 0, 0, 0.05);
  --shadow-xl: 0 20px 25px -5px rgba(0, 0, 0, 0.1), 0 10px 10px -5px rgba(0, 0, 0, 0.04);
  
  /* Spacing */
  --spacing-xs: 0.25rem;
  --spacing-sm: 0.5rem;
  --spacing-md: 1rem;
  --spacing-lg: 1.5rem;
  --spacing-xl: 2rem;
  --spacing-2xl: 3rem;
  
  /* Border Radius */
  --radius-sm: 0.375rem;
  --radius-md: 0.5rem;
  --radius-lg: 0.75rem;
  --radius-xl: 1rem;
  --radius-2xl: 1.5rem;
  
  /* Transitions */
  --transition-fast: 150ms cubic-bezier(0.4, 0, 0.2, 1);
  --transition-base: 250ms cubic-bezier(0.4, 0, 0.2, 1);
  --transition-slow: 350ms cubic-bezier(0.4, 0, 0.2, 1);
}

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

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

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

body {
  font-family: -apple-system, BlinkMacSystemFont, 'Segoe UI', 'Roboto', 'Oxygen',
    'Ubuntu', 'Cantarell', 'Fira Sans', 'Droid Sans', 'Helvetica Neue', sans-serif;
  background: var(--gray-50);
  color: var(--gray-900);
  line-height: 1.6;
  overflow-x: hidden;
}

a {
  text-decoration: none;
  color: inherit;
}

button {
  border: none;
  background: none;
  cursor: pointer;
  font-family: inherit;
}

img {
  max-width: 100%;
  display: block;
}

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

h1, h2, h3, h4, h5, h6 {
  font-weight: 600;
  line-height: 1.2;
  color: var(--gray-900);
}

h1 {
  font-size: 2.5rem;
  font-weight: 700;
}

h2 {
  font-size: 2rem;
}

h3 {
  font-size: 1.5rem;
}

h4 {
  font-size: 1.25rem;
}

h5 {
  font-size: 1.125rem;
}

h6 {
  font-size: 1rem;
}

p {
  color: var(--gray-600);
}

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

.container {
  max-width: 1280px;
  margin: 0 auto;
  padding: 0 var(--spacing-lg);
}

.flex {
  display: flex;
}

.flex-col {
  flex-direction: column;
}

.items-center {
  align-items: center;
}

.justify-between {
  justify-content: space-between;
}

.justify-center {
  justify-content: center;
}

.gap-1 {
  gap: var(--spacing-sm);
}

.gap-2 {
  gap: var(--spacing-md);
}

.gap-3 {
  gap: var(--spacing-lg);
}

.gap-4 {
  gap: var(--spacing-xl);
}

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

.btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: var(--spacing-sm);
  padding: 0.75rem 1.5rem;
  font-size: 1rem;
  font-weight: 500;
  border-radius: var(--radius-lg);
  transition: all var(--transition-base);
  cursor: pointer;
  white-space: nowrap;
}

.btn-primary {
  background: var(--primary-green);
  color: var(--white);
  box-shadow: var(--shadow-sm);
}

.btn-primary:hover {
  background: var(--primary-green-dark);
  box-shadow: var(--shadow-md);
  transform: translateY(-1px);
}

.btn-secondary {
  background: var(--white);
  color: var(--gray-700);
  border: 1px solid var(--gray-200);
  box-shadow: var(--shadow-sm);
}

.btn-secondary:hover {
  background: var(--gray-50);
  border-color: var(--gray-300);
}

.btn-ghost {
  background: transparent;
  color: var(--gray-600);
}

.btn-ghost:hover {
  background: var(--gray-100);
  color: var(--gray-900);
}

.btn-sm {
  padding: 0.5rem 1rem;
  font-size: 0.875rem;
}

.btn-lg {
  padding: 1rem 2rem;
  font-size: 1.125rem;
}

/* ==========================================
   Cards
   ========================================== */

.card {
  background: var(--white);
  border-radius: var(--radius-xl);
  box-shadow: var(--shadow-sm);
  padding: var(--spacing-xl);
  transition: all var(--transition-base);
}

.card:hover {
  box-shadow: var(--shadow-md);
}

.card-header {
  margin-bottom: var(--spacing-lg);
}

.card-title {
  font-size: 1.25rem;
  font-weight: 600;
  color: var(--gray-900);
  margin-bottom: var(--spacing-xs);
}

.card-subtitle {
  font-size: 0.875rem;
  color: var(--gray-500);
}

/* ==========================================
   Navigation
   ========================================== */

.navbar {
  background: var(--white);
  border-bottom: 1px solid var(--gray-200);
  padding: var(--spacing-md) 0;
  position: sticky;
  top: 0;
  z-index: 100;
  backdrop-filter: blur(10px);
  background: rgba(255, 255, 255, 0.95);
}

.navbar-content {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: var(--spacing-xl);
}

.navbar-brand {
  font-size: 1.5rem;
  font-weight: 700;
  color: var(--primary-green);
  display: flex;
  align-items: center;
  gap: var(--spacing-sm);
}

.navbar-menu {
  display: flex;
  align-items: center;
  gap: var(--spacing-lg);
  flex: 1;
  justify-content: center;
}

.navbar-actions {
  display: flex;
  align-items: center;
  gap: var(--spacing-md);
}

.nav-link {
  color: var(--gray-600);
  font-weight: 500;
  padding: var(--spacing-sm) var(--spacing-md);
  border-radius: var(--radius-md);
  transition: all var(--transition-fast);
}

.nav-link:hover,
.nav-link.active {
  color: var(--primary-green);
  background: var(--primary-green-bg);
}

/* ==========================================
   Sidebar
   ========================================== */

.sidebar {
  background: var(--white);
  border-right: 1px solid var(--gray-200);
  width: 280px;
  height: calc(100vh - 73px);
  position: fixed;
  left: 0;
  top: 73px;
  padding: var(--spacing-xl);
  overflow-y: auto;
  transition: all var(--transition-base);
}

.sidebar-nav {
  display: flex;
  flex-direction: column;
  gap: var(--spacing-xs);
}

.sidebar-item {
  display: flex;
  align-items: center;
  gap: var(--spacing-md);
  padding: var(--spacing-md);
  border-radius: var(--radius-md);
  color: var(--gray-600);
  font-weight: 500;
  transition: all var(--transition-fast);
}

.sidebar-item:hover,
.sidebar-item.active {
  background: var(--primary-green-bg);
  color: var(--primary-green);
}

.sidebar-item-icon {
  width: 20px;
  height: 20px;
  display: flex;
  align-items: center;
  justify-content: center;
}

.sidebar-divider {
  height: 1px;
  background: var(--gray-200);
  margin: var(--spacing-md) 0;
}

/* ==========================================
   Main Layout
   ========================================== */

.main-layout {
  display: flex;
  min-height: calc(100vh - 73px);
}

.main-content {
  flex: 1;
  margin-left: 280px;
  padding: var(--spacing-xl);
  background: var(--gray-50);
}

.page-header {
  margin-bottom: var(--spacing-xl);
}

.page-title {
  font-size: 2rem;
  font-weight: 700;
  color: var(--gray-900);
  margin-bottom: var(--spacing-sm);
}

.page-description {
  color: var(--gray-600);
  font-size: 1rem;
}

/* ==========================================
   Dashboard Grid
   ========================================== */

.dashboard-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(300px, 1fr));
  gap: var(--spacing-xl);
  margin-bottom: var(--spacing-xl);
}

.stat-card {
  background: var(--white);
  border-radius: var(--radius-xl);
  padding: var(--spacing-xl);
  box-shadow: var(--shadow-sm);
  transition: all var(--transition-base);
}

.stat-card:hover {
  box-shadow: var(--shadow-md);
  transform: translateY(-2px);
}

.stat-card-header {
  display: flex;
  align-items: center;
  justify-content: space-between;
  margin-bottom: var(--spacing-md);
}

.stat-card-icon {
  width: 48px;
  height: 48px;
  border-radius: var(--radius-lg);
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 1.5rem;
}

.stat-card-icon.green {
  background: var(--primary-green-bg);
  color: var(--primary-green);
}

.stat-card-icon.blue {
  background: rgba(59, 130, 246, 0.1);
  color: var(--accent-blue);
}

.stat-card-icon.yellow {
  background: rgba(245, 158, 11, 0.1);
  color: var(--accent-yellow);
}

.stat-card-icon.purple {
  background: rgba(139, 92, 246, 0.1);
  color: var(--accent-purple);
}

.stat-card-value {
  font-size: 2rem;
  font-weight: 700;
  color: var(--gray-900);
  margin-bottom: var(--spacing-xs);
}

.stat-card-label {
  color: var(--gray-600);
  font-size: 0.875rem;
}

.stat-card-change {
  display: inline-flex;
  align-items: center;
  gap: var(--spacing-xs);
  font-size: 0.875rem;
  font-weight: 500;
  margin-top: var(--spacing-sm);
}

.stat-card-change.positive {
  color: var(--primary-green);
}

.stat-card-change.negative {
  color: var(--accent-red);
}

/* ==========================================
   Progress Bars
   ========================================== */

.progress-bar {
  width: 100%;
  height: 8px;
  background: var(--gray-200);
  border-radius: 999px;
  overflow: hidden;
}

.progress-bar-fill {
  height: 100%;
  background: var(--primary-green);
  border-radius: 999px;
  transition: width var(--transition-slow);
}

.progress-bar-fill.blue {
  background: var(--accent-blue);
}

.progress-bar-fill.yellow {
  background: var(--accent-yellow);
}

.progress-bar-fill.purple {
  background: var(--accent-purple);
}

/* ==========================================
   Badges
   ========================================== */

.badge {
  display: inline-flex;
  align-items: center;
  padding: 0.25rem 0.75rem;
  font-size: 0.75rem;
  font-weight: 600;
  border-radius: 999px;
}

.badge-success {
  background: var(--primary-green-bg);
  color: var(--primary-green);
}

.badge-warning {
  background: rgba(245, 158, 11, 0.1);
  color: var(--accent-yellow);
}

.badge-info {
  background: rgba(59, 130, 246, 0.1);
  color: var(--accent-blue);
}

.badge-danger {
  background: rgba(239, 68, 68, 0.1);
  color: var(--accent-red);
}

.badge-neutral {
  background: var(--gray-100);
  color: var(--gray-600);
}

/* ==========================================
   Avatar
   ========================================== */

.avatar {
  width: 40px;
  height: 40px;
  border-radius: 50%;
  background: var(--primary-green-bg);
  color: var(--primary-green);
  display: flex;
  align-items: center;
  justify-content: center;
  font-weight: 600;
  font-size: 1rem;
}

.avatar-sm {
  width: 32px;
  height: 32px;
  font-size: 0.875rem;
}

.avatar-lg {
  width: 56px;
  height: 56px;
  font-size: 1.5rem;
}

/* ==========================================
   Forms
   ========================================== */

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

.form-label {
  display: block;
  font-weight: 500;
  color: var(--gray-700);
  margin-bottom: var(--spacing-sm);
  font-size: 0.875rem;
}

.form-input {
  width: 100%;
  padding: 0.75rem 1rem;
  border: 1px solid var(--gray-300);
  border-radius: var(--radius-md);
  font-size: 1rem;
  transition: all var(--transition-fast);
  background: var(--white);
}

.form-input:focus {
  outline: none;
  border-color: var(--primary-green);
  box-shadow: 0 0 0 3px var(--primary-green-bg);
}

.form-input::placeholder {
  color: var(--gray-400);
}

/* ==========================================
   Search
   ========================================== */

.search-box {
  position: relative;
  width: 100%;
  max-width: 400px;
}

.search-input {
  width: 100%;
  padding: 0.75rem 1rem 0.75rem 3rem;
  border: 1px solid var(--gray-200);
  border-radius: var(--radius-lg);
  font-size: 0.875rem;
  background: var(--gray-50);
  transition: all var(--transition-fast);
}

.search-input:focus {
  outline: none;
  background: var(--white);
  border-color: var(--primary-green);
  box-shadow: 0 0 0 3px var(--primary-green-bg);
}

.search-icon {
  position: absolute;
  left: 1rem;
  top: 50%;
  transform: translateY(-50%);
  color: var(--gray-400);
}

/* ==========================================
   Notifications
   ========================================== */

.notification-badge {
  position: relative;
}

.notification-badge::after {
  content: '';
  position: absolute;
  top: 0;
  right: 0;
  width: 8px;
  height: 8px;
  background: var(--accent-red);
  border: 2px solid var(--white);
  border-radius: 50%;
}

/* ==========================================
   Mobile Responsive
   ========================================== */

@media (max-width: 1024px) {
  .sidebar {
    transform: translateX(-100%);
  }
  
  .sidebar.mobile-open {
    transform: translateX(0);
  }
  
  .main-content {
    margin-left: 0;
  }
  
  .navbar-menu {
    display: none;
  }
}

@media (max-width: 768px) {
  h1 {
    font-size: 2rem;
  }
  
  h2 {
    font-size: 1.5rem;
  }
  
  .dashboard-grid {
    grid-template-columns: 1fr;
  }
  
  .navbar-actions {
    gap: var(--spacing-sm);
  }
  
  .container {
    padding: 0 var(--spacing-md);
  }
  
  .main-content {
    padding: var(--spacing-md);
  }
}

@media (max-width: 480px) {
  html {
    font-size: 14px;
  }
  
  .card {
    padding: var(--spacing-lg);
  }
}

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

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

@keyframes slideIn {
  from {
    transform: translateX(-100%);
  }
  to {
    transform: translateX(0);
  }
}

@keyframes pulse {
  0%, 100% {
    opacity: 1;
  }
  50% {
    opacity: 0.5;
  }
}

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

.animate-slide-in {
  animation: slideIn var(--transition-base) ease-out;
}

/* ==========================================
   Scrollbar Styling
   ========================================== */

::-webkit-scrollbar {
  width: 8px;
  height: 8px;
}

::-webkit-scrollbar-track {
  background: var(--gray-100);
}

::-webkit-scrollbar-thumb {
  background: var(--gray-300);
  border-radius: 4px;
}

::-webkit-scrollbar-thumb:hover {
  background: var(--gray-400);
}