:root {
  --primary-color: #2563eb;
  --primary-dark: #1d4ed8;
  --secondary-color: #4f46e5;
  --success-color: #10b981;
  --danger-color: #ef4444;
  --warning-color: #f59e0b;
  --light-color: #f9fafb;
  --dark-color: #1f2937;
  --gray-color: #6b7280;
  --border-color: #e5e7eb;
}

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

body {
  font-family: 'Inter', 'Segoe UI', Tahoma, Geneva, Verdana, sans-serif;
  line-height: 1.6;
  background-color: #f3f4f6;
  color: #1f2937;
}

.container {
  max-width: 1200px;
  margin: 0 auto;
  padding: 0 1.5rem;
}

.navbar {
  background-color: white;
  color: var(--dark-color);
  padding: 1rem 0;
  box-shadow: 0 1px 3px rgba(0, 0, 0, 0.1);
  position: sticky;
  top: 0;
  z-index: 100;
}

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

.navbar-brand {
  font-size: 1.5rem;
  font-weight: 700;
  color: var(--primary-color);
  text-decoration: none;
  display: flex;
  align-items: center;
  gap: 0.5rem;
}

.navbar-brand i {
  font-size: 1.75rem;
}

.navbar-nav {
  display: flex;
  list-style: none;
  gap: 1.5rem;
}

.nav-item {
  position: relative;
}

.nav-link {
  color: var(--dark-color);
  text-decoration: none;
  font-weight: 500;
  transition: color 0.2s;
  padding: 0.5rem 0;
  display: flex;
  align-items: center;
  gap: 0.5rem;
}

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

.nav-link.active::after {
  content: '';
  position: absolute;
  bottom: -1px;
  left: 0;
  width: 100%;
  height: 2px;
  background-color: var(--primary-color);
}

.card {
  background-color: white;
  border-radius: 0.5rem;
  box-shadow: 0 1px 3px rgba(0, 0, 0, 0.1);
  margin-bottom: 1.5rem;
  overflow: hidden;
  border: 1px solid var(--border-color);
}

.card-header {
  padding: 1rem 1.5rem;
  background-color: white;
  border-bottom: 1px solid var(--border-color);
  font-weight: 600;
  display: flex;
  justify-content: space-between;
  align-items: center;
}

.card-body {
  padding: 1.5rem;
}

.form-group {
  margin-bottom: 1.25rem;
}

.form-label {
  display: block;
  margin-bottom: 0.5rem;
  font-weight: 500;
  color: var(--dark-color);
}

.form-control {
  width: 100%;
  padding: 0.625rem 0.75rem;
  font-size: 0.875rem;
  border: 1px solid var(--border-color);
  border-radius: 0.375rem;
  transition: border-color 0.15s, box-shadow 0.15s;
}

.form-control:focus {
  border-color: var(--primary-color);
  outline: 0;
  box-shadow: 0 0 0 3px rgba(37, 99, 235, 0.1);
}

.form-text {
  display: block;
  margin-top: 0.25rem;
  font-size: 0.75rem;
  color: var(--gray-color);
}

.btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  font-weight: 500;
  text-align: center;
  white-space: nowrap;
  vertical-align: middle;
  user-select: none;
  border: 1px solid transparent;
  padding: 0.625rem 1rem;
  font-size: 0.875rem;
  line-height: 1.25rem;
  border-radius: 0.375rem;
  transition: all 0.15s ease-in-out;
  cursor: pointer;
  gap: 0.5rem;
}

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

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

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

.btn-danger:hover {
  background-color: #dc2626;
  border-color: #dc2626;
}

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

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

.alert {
  padding: 1rem;
  margin-bottom: 1rem;
  border: 1px solid transparent;
  border-radius: 0.375rem;
  display: flex;
  align-items: center;
  gap: 0.75rem;
}

.alert-success {
  color: #065f46;
  background-color: #d1fae5;
  border-color: #a7f3d0;
}

.alert-danger {
  color: #991b1b;
  background-color: #fee2e2;
  border-color: #fecaca;
}

.alert-warning {
  color: #92400e;
  background-color: #fef3c7;
  border-color: #fde68a;
}

.project-list {
  display: grid;
  grid-template-columns: repeat(auto-fill, minmax(350px, 1fr));
  gap: 1.5rem;
  margin-top: 1.5rem;
}

.project-card {
  background-color: white;
  border-radius: 0.5rem;
  box-shadow: 0 1px 3px rgba(0, 0, 0, 0.1);
  overflow: hidden;
  transition: transform 0.2s ease, box-shadow 0.2s ease;
  border: 1px solid var(--border-color);
  height: 100%;
  display: flex;
  flex-direction: column;
}

.project-card:hover {
  transform: translateY(-4px);
  box-shadow: 0 10px 15px -3px rgba(0, 0, 0, 0.1);
}

.project-card-header {
  padding: 1.25rem;
  background-color: var(--primary-color);
  color: white;
}

.project-card-body {
  padding: 1.5rem;
  flex-grow: 1;
}

.project-card-footer {
  padding: 1rem 1.25rem;
  background-color: #f9fafb;
  border-top: 1px solid var(--border-color);
  display: flex;
  justify-content: space-between;
  align-items: center;
}

.api-key {
  font-family: 'Fira Code', monospace;
  background-color: #f9fafb;
  padding: 0.75rem;
  border-radius: 0.375rem;
  border: 1px solid var(--border-color);
  margin-top: 0.75rem;
  overflow-x: auto;
  font-size: 0.875rem;
  position: relative;
}

.copy-btn {
  position: absolute;
  top: 0.25rem;
  right: 0.25rem;
  background: rgba(255, 255, 255, 0.8);
  border: none;
  border-radius: 0.25rem;
  padding: 0.25rem;
  cursor: pointer;
  color: var(--gray-color);
  transition: color 0.2s;
}

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

.login-container {
  max-width: 400px;
  margin: 100px auto;
}

.section {
  padding: 2rem 0;
}

.section-title {
  margin-bottom: 1.5rem;
  color: var(--dark-color);
  font-weight: 600;
  display: flex;
  align-items: center;
  gap: 0.75rem;
}

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

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

.mt-3 {
  margin-top: 1rem;
}

.mb-3 {
  margin-bottom: 1rem;
}

.hidden {
  display: none;
}

.tabs {
  display: flex;
  border-bottom: 1px solid var(--border-color);
  margin-bottom: 1.5rem;
}

.tab {
  padding: 0.75rem 1.5rem;
  cursor: pointer;
  font-weight: 500;
  color: var(--gray-color);
  border-bottom: 2px solid transparent;
  transition: all 0.2s;
}

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

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

.tab-content {
  display: none;
}

.tab-content.active {
  display: block;
}

.badge {
  display: inline-block;
  padding: 0.25rem 0.5rem;
  font-size: 0.75rem;
  font-weight: 600;
  border-radius: 9999px;
}

.badge-success {
  background-color: #d1fae5;
  color: #065f46;
}

.badge-warning {
  background-color: #fef3c7;
  color: #92400e;
}

.stats-grid {
  display: grid;
  grid-template-columns: repeat(auto-fill, minmax(250px, 1fr));
  gap: 1.5rem;
  margin-bottom: 2rem;
}

.stat-card {
  background-color: white;
  border-radius: 0.5rem;
  box-shadow: 0 1px 3px rgba(0, 0, 0, 0.1);
  padding: 1.5rem;
  border: 1px solid var(--border-color);
}

.stat-title {
  color: var(--gray-color);
  font-size: 0.875rem;
  margin-bottom: 0.5rem;
}

.stat-value {
  font-size: 1.5rem;
  font-weight: 600;
  color: var(--dark-color);
}

.stat-icon {
  float: right;
  background-color: rgba(37, 99, 235, 0.1);
  color: var(--primary-color);
  padding: 0.75rem;
  border-radius: 0.5rem;
  margin-top: -2.5rem;
}

.empty-state {
  text-align: center;
  padding: 3rem 1.5rem;
  color: var(--gray-color);
}

.empty-state-icon {
  font-size: 3rem;
  margin-bottom: 1rem;
  color: var(--border-color);
}

@media (max-width: 768px) {
  .project-list {
    grid-template-columns: 1fr;
  }
  
  .navbar .container {
    flex-direction: column;
  }
  
  .navbar-nav {
    margin-top: 1rem;
    width: 100%;
    justify-content: center;
  }
  
  .tabs {
    overflow-x: auto;
    white-space: nowrap;
  }
}