@import url('https://fonts.googleapis.com/css2?family=Poppins:wght@300;400;500;600;700&display=swap');

:root {
  --color-primary: #4A90E2;
  --color-primary-dark: #3A7BC8;
  --color-primary-light: #6BA8E8;
  
  --color-secondary: #50C878;
  --color-secondary-dark: #40A860;
  --color-secondary-light: #70D890;
  
  --color-accent: #FF6B6B;
  --color-accent-dark: #E55555;
  
  --color-dark: #333333;
  --color-gray: #666666;
  --color-light-gray: #CCCCCC;
  --color-bg-light: #F5F5F5;
  --color-white: #FFFFFF;
  
  --color-success: #50C878;
  --color-warning: #FFA500;
  --color-error: #FF6B6B;
  --color-info: #4A90E2;
  
  --spacing-xs: 0.5rem;
  --spacing-sm: 1rem;
  --spacing-md: 1.5rem;
  --spacing-lg: 2rem;
  --spacing-xl: 3rem;
  
  --border-radius-sm: 4px;
  --border-radius-md: 8px;
  --border-radius-lg: 12px;
  --border-radius-xl: 20px;
  
  --shadow-sm: 0 2px 4px rgba(0, 0, 0, 0.1);
  --shadow-md: 0 4px 8px rgba(0, 0, 0, 0.15);
  --shadow-lg: 0 8px 16px rgba(0, 0, 0, 0.2);
  
  --transition-fast: 0.2s ease;
  --transition-normal: 0.3s ease;
  --transition-slow: 0.5s ease;
}

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

html {
  font-size: 16px;
  scroll-behavior: smooth;
}

body {
  font-family: 'Poppins', sans-serif;
  color: var(--color-dark);
  background-color: var(--color-white);
  line-height: 1.6;
  overflow-x: hidden;
}

h1 {
  font-size: 2rem;
  font-weight: 700;
  color: var(--color-dark);
  margin-bottom: var(--spacing-md);
  line-height: 1.2;
}

h2 {
  font-size: 1.5rem;
  font-weight: 600;
  color: var(--color-dark);
  margin-bottom: var(--spacing-sm);
  line-height: 1.3;
}

h3 {
  font-size: 1.25rem;
  font-weight: 500;
  color: var(--color-dark);
  margin-bottom: var(--spacing-sm);
  line-height: 1.4;
}

p {
  font-size: 1rem;
  color: var(--color-gray);
  margin-bottom: var(--spacing-sm);
}

.container {
  max-width: 1200px;
  margin: 0 auto;
  padding: 0 var(--spacing-md);
}

.section {
  padding: var(--spacing-xl) 0;
}

.navbar {
  background-color: var(--color-white);
  box-shadow: var(--shadow-sm);
  padding: var(--spacing-sm) 0;
  position: sticky;
  top: 0;
  z-index: 1000;
  transition: var(--transition-normal);
}

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

.navbar-brand {
  display: flex;
  align-items: center;
  gap: var(--spacing-sm);
  text-decoration: none;
  color: var(--color-primary);
  font-size: 1.5rem;
  font-weight: 700;
}

.navbar-brand img {
  height: 40px;
  width: auto;
}

.navbar-menu {
  display: flex;
  list-style: none;
  gap: var(--spacing-md);
  align-items: center;
}

.navbar-menu a {
  text-decoration: none;
  color: var(--color-gray);
  font-weight: 500;
  transition: var(--transition-fast);
  padding: var(--spacing-xs) var(--spacing-sm);
  border-radius: var(--border-radius-sm);
}

.navbar-menu a:hover {
  color: var(--color-primary);
  background-color: var(--color-bg-light);
}

.btn {
  display: inline-block;
  padding: var(--spacing-sm) var(--spacing-lg);
  font-size: 1rem;
  font-weight: 500;
  text-align: center;
  text-decoration: none;
  border: none;
  border-radius: var(--border-radius-md);
  cursor: pointer;
  transition: var(--transition-fast);
  font-family: 'Poppins', sans-serif;
  box-shadow: var(--shadow-sm);
}

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

.btn:active {
  transform: translateY(0);
  box-shadow: var(--shadow-sm);
}

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

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

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

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

.btn-outline {
  background-color: transparent;
  color: var(--color-primary);
  border: 2px solid var(--color-primary);
}

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

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

.btn-danger:hover {
  background-color: var(--color-accent-dark);
}

.btn-block {
  display: block;
  width: 100%;
}

.card {
  background-color: var(--color-white);
  border-radius: var(--border-radius-lg);
  box-shadow: var(--shadow-md);
  padding: var(--spacing-lg);
  margin-bottom: var(--spacing-md);
  transition: var(--transition-normal);
}

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

.card-header {
  border-bottom: 2px solid var(--color-bg-light);
  padding-bottom: var(--spacing-sm);
  margin-bottom: var(--spacing-md);
}

.card-title {
  font-size: 1.25rem;
  font-weight: 600;
  color: var(--color-dark);
  margin: 0;
}

.card-body {
  color: var(--color-gray);
}

.card-footer {
  border-top: 2px solid var(--color-bg-light);
  padding-top: var(--spacing-sm);
  margin-top: var(--spacing-md);
  display: flex;
  gap: var(--spacing-sm);
  justify-content: flex-end;
}

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

.form-label {
  display: block;
  font-weight: 500;
  color: var(--color-dark);
  margin-bottom: var(--spacing-xs);
}

.form-control {
  width: 100%;
  padding: var(--spacing-sm);
  font-size: 1rem;
  font-family: 'Poppins', sans-serif;
  border: 2px solid var(--color-light-gray);
  border-radius: var(--border-radius-md);
  transition: var(--transition-fast);
  background-color: var(--color-white);
}

.form-control:focus {
  outline: none;
  border-color: var(--color-primary);
  box-shadow: 0 0 0 3px rgba(74, 144, 226, 0.1);
}

.form-control:hover {
  border-color: var(--color-primary-light);
}

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

.form-control.success {
  border-color: var(--color-success);
}

.form-text {
  display: block;
  font-size: 0.875rem;
  color: var(--color-gray);
  margin-top: var(--spacing-xs);
}

.form-error {
  display: block;
  font-size: 0.875rem;
  color: var(--color-error);
  margin-top: var(--spacing-xs);
}

select.form-control {
  cursor: pointer;
  appearance: none;
  background-image: url("data:image/svg+xml,%3Csvg xmlns='http://www.w3.org/2000/svg' width='12' height='12' viewBox='0 0 12 12'%3E%3Cpath fill='%23333' d='M6 9L1 4h10z'/%3E%3C/svg%3E");
  background-repeat: no-repeat;
  background-position: right var(--spacing-sm) center;
  padding-right: var(--spacing-xl);
}

.row {
  display: flex;
  flex-wrap: wrap;
  gap: var(--spacing-md);
  margin-bottom: var(--spacing-md);
}

.col {
  flex: 1;
  min-width: 0;
}

.col-2 {
  flex: 0 0 calc(50% - var(--spacing-md) / 2);
}

.col-3 {
  flex: 0 0 calc(33.333% - var(--spacing-md) * 2 / 3);
}

.col-4 {
  flex: 0 0 calc(25% - var(--spacing-md) * 3 / 4);
}

.hero {
  background: linear-gradient(135deg, var(--color-primary) 0%, var(--color-primary-dark) 100%);
  color: var(--color-white);
  padding: var(--spacing-xl) 0;
  text-align: center;
  position: relative;
  overflow: hidden;
}

.hero::before {
  content: '';
  position: absolute;
  top: 0;
  left: 0;
  right: 0;
  bottom: 0;
  background: url("data:image/svg+xml,%3Csvg width='60' height='60' viewBox='0 0 60 60' xmlns='http://www.w3.org/2000/svg'%3E%3Cg fill='none' fill-rule='evenodd'%3E%3Cg fill='%23ffffff' fill-opacity='0.05'%3E%3Cpath d='M36 34v-4h-2v4h-4v2h4v4h2v-4h4v-2h-4zm0-30V0h-2v4h-4v2h4v4h2V6h4V4h-4zM6 34v-4H4v4H0v2h4v4h2v-4h4v-2H6zM6 4V0H4v4H0v2h4v4h2V6h4V4H6z'/%3E%3C/g%3E%3C/g%3E%3C/svg%3E");
  opacity: 0.1;
}

.hero-content {
  position: relative;
  z-index: 1;
}

.hero h1 {
  color: var(--color-white);
  font-size: 2.5rem;
  margin-bottom: var(--spacing-md);
}

.hero p {
  color: rgba(255, 255, 255, 0.9);
  font-size: 1.25rem;
  margin-bottom: var(--spacing-lg);
}

.alert {
  padding: var(--spacing-md);
  border-radius: var(--border-radius-md);
  margin-bottom: var(--spacing-md);
  border-left: 4px solid;
  animation: slideIn 0.3s ease;
}

@keyframes slideIn {
  from {
    opacity: 0;
    transform: translateY(-10px);
  }
  to {
    opacity: 1;
    transform: translateY(0);
  }
}

.alert-success {
  background-color: rgba(80, 200, 120, 0.1);
  border-color: var(--color-success);
  color: var(--color-success);
}

.alert-error {
  background-color: rgba(255, 107, 107, 0.1);
  border-color: var(--color-error);
  color: var(--color-error);
}

.alert-info {
  background-color: rgba(74, 144, 226, 0.1);
  border-color: var(--color-info);
  color: var(--color-info);
}

.alert-warning {
  background-color: rgba(255, 165, 0, 0.1);
  border-color: var(--color-warning);
  color: var(--color-warning);
}

.table {
  width: 100%;
  border-collapse: collapse;
  background-color: var(--color-white);
  border-radius: var(--border-radius-md);
  overflow: hidden;
  box-shadow: var(--shadow-sm);
}

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

.table th,
.table td {
  padding: var(--spacing-sm) var(--spacing-md);
  text-align: left;
  border-bottom: 1px solid var(--color-bg-light);
}

.table tbody tr {
  transition: var(--transition-fast);
}

.table tbody tr:hover {
  background-color: var(--color-bg-light);
}

.table tbody tr:last-child td {
  border-bottom: none;
}

.badge {
  display: inline-block;
  padding: var(--spacing-xs) var(--spacing-sm);
  font-size: 0.875rem;
  font-weight: 500;
  border-radius: var(--border-radius-xl);
  text-transform: uppercase;
  letter-spacing: 0.5px;
}

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

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

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

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

.dashboard {
  display: flex;
  min-height: calc(100vh - 60px);
}

.sidebar {
  width: 250px;
  background-color: var(--color-white);
  box-shadow: var(--shadow-md);
  padding: var(--spacing-lg);
}

.sidebar-menu {
  list-style: none;
}

.sidebar-menu li {
  margin-bottom: var(--spacing-sm);
}

.sidebar-menu a {
  display: block;
  padding: var(--spacing-sm);
  text-decoration: none;
  color: var(--color-gray);
  border-radius: var(--border-radius-md);
  transition: var(--transition-fast);
  font-weight: 500;
}

.sidebar-menu a:hover,
.sidebar-menu a.active {
  background-color: var(--color-primary);
  color: var(--color-white);
}

.main-content {
  flex: 1;
  padding: var(--spacing-lg);
  background-color: var(--color-bg-light);
}

.footer {
  background-color: var(--color-dark);
  color: var(--color-white);
  padding: var(--spacing-lg) 0;
  text-align: center;
  margin-top: auto;
}

.footer p {
  color: rgba(255, 255, 255, 0.8);
  margin: 0;
}

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

.text-right {
  text-align: right;
}

.mt-1 { margin-top: var(--spacing-sm); }
.mt-2 { margin-top: var(--spacing-md); }
.mt-3 { margin-top: var(--spacing-lg); }

.mb-1 { margin-bottom: var(--spacing-sm); }
.mb-2 { margin-bottom: var(--spacing-md); }
.mb-3 { margin-bottom: var(--spacing-lg); }

.d-flex {
  display: flex;
}

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

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

.gap-1 { gap: var(--spacing-sm); }
.gap-2 { gap: var(--spacing-md); }
.gap-3 { gap: var(--spacing-lg); }

@media (max-width: 768px) {
  .navbar-menu {
    flex-direction: column;
    gap: var(--spacing-sm);
  }
  
  .row {
    flex-direction: column;
  }
  
  .col-2,
  .col-3,
  .col-4 {
    flex: 0 0 100%;
  }
  
  .dashboard {
    flex-direction: column;
  }
  
  .sidebar {
    width: 100%;
  }
  
  .hero h1 {
    font-size: 2rem;
  }
  
  h1 {
    font-size: 1.75rem;
  }
  
  h2 {
    font-size: 1.35rem;
  }
}

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

.fade-in {
  animation: fadeIn var(--transition-normal);
}

.spinner {
  border: 3px solid var(--color-bg-light);
  border-top: 3px solid var(--color-primary);
  border-radius: 50%;
  width: 40px;
  height: 40px;
  animation: spin 1s linear infinite;
  margin: var(--spacing-lg) auto;
}

@keyframes spin {
  0% { transform: rotate(0deg); }
  100% { transform: rotate(360deg); }
}

.modal {
  display: none;
  position: fixed;
  z-index: 2000;
  left: 0;
  top: 0;
  width: 100%;
  height: 100%;
  background-color: rgba(0, 0, 0, 0.5);
  justify-content: center;
  align-items: center;
  animation: fadeIn var(--transition-fast);
}

.modal-content {
  background-color: var(--color-white);
  border-radius: var(--border-radius-lg);
  box-shadow: var(--shadow-lg);
  width: 90%;
  max-width: 600px;
  max-height: 90vh;
  overflow-y: auto;
  animation: slideInModal 0.3s ease;
}

@keyframes slideInModal {
  from {
    transform: translateY(-50px);
    opacity: 0;
  }
  to {
    transform: translateY(0);
    opacity: 1;
  }
}

.modal-header {
  padding: var(--spacing-lg);
  border-bottom: 2px solid var(--color-bg-light);
  display: flex;
  justify-content: space-between;
  align-items: center;
}

.modal-header h3 {
  margin: 0;
  color: var(--color-dark);
}

.modal-close {
  font-size: 2rem;
  font-weight: 300;
  color: var(--color-gray);
  cursor: pointer;
  transition: var(--transition-fast);
  line-height: 1;
  padding: 0;
  border: none;
  background: none;
}

.modal-close:hover {
  color: var(--color-error);
  transform: scale(1.2);
}

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

.btn-sm {
  padding: var(--spacing-xs) var(--spacing-sm);
  font-size: 0.875rem;
}