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

body {
  font-family: 'Inter', -apple-system, BlinkMacSystemFont, 'Segoe UI', sans-serif;
  background: linear-gradient(135deg, #667eea 0%, #764ba2 100%);
  min-height: 100vh;
  color: #333;
}

.hidden {
  display: none !important;
}

/* ============ AUTH PAGES ============ */

.auth-container {
  display: flex;
  align-items: center;
  justify-content: center;
  min-height: 100vh;
  padding: 20px;
}

.auth-page {
  display: none;
  width: 100%;
  max-width: 450px;
}

.auth-page.active {
  display: block;
  animation: fadeIn 0.3s ease;
}

.auth-card {
  background: white;
  border-radius: 24px;
  padding: 48px;
  box-shadow: 0 20px 60px rgba(0, 0, 0, 0.3);
}

.auth-header {
  text-align: center;
  margin-bottom: 32px;
}

.auth-logo {
  width: 64px;
  height: 64px;
  margin-bottom: 24px;
}

.auth-header h1 {
  font-size: 28px;
  font-weight: 700;
  margin-bottom: 8px;
  background: linear-gradient(135deg, #667eea 0%, #764ba2 100%);
  -webkit-background-clip: text;
  -webkit-text-fill-color: transparent;
  background-clip: text;
}

.auth-header p {
  color: #666;
  font-size: 14px;
}

.auth-form {
  margin-bottom: 24px;
}

.form-group {
  margin-bottom: 20px;
}

.form-group label {
  display: block;
  margin-bottom: 8px;
  font-weight: 600;
  font-size: 14px;
  color: #333;
}

.form-group input {
  width: 100%;
  padding: 14px 16px;
  border: 2px solid #e2e8f0;
  border-radius: 12px;
  font-size: 15px;
  transition: all 0.2s;
  font-family: inherit;
}

.form-group input:focus {
  outline: none;
  border-color: #667eea;
  box-shadow: 0 0 0 3px rgba(102, 126, 234, 0.1);
}

.btn {
  padding: 14px 24px;
  border: none;
  border-radius: 12px;
  font-size: 15px;
  font-weight: 600;
  cursor: pointer;
  transition: all 0.2s;
  font-family: inherit;
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: 8px;
}

.btn-primary {
  background: linear-gradient(135deg, #667eea 0%, #764ba2 100%);
  color: white;
  box-shadow: 0 4px 12px rgba(102, 126, 234, 0.4);
}

.btn-primary:hover {
  transform: translateY(-2px);
  box-shadow: 0 6px 20px rgba(102, 126, 234, 0.5);
}

.btn-secondary {
  background: #e2e8f0;
  color: #333;
}

.btn-secondary:hover {
  background: #cbd5e0;
}

.btn-danger {
  background: #ef4444;
  color: white;
}

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

.btn-ghost {
  background: transparent;
  color: #666;
}

.btn-ghost:hover {
  background: rgba(0, 0, 0, 0.05);
}

.btn-block {
  width: 100%;
}

.auth-footer {
  text-align: center;
  color: #666;
  font-size: 14px;
}

.auth-footer a {
  color: #667eea;
  text-decoration: none;
  font-weight: 600;
}

.auth-footer a:hover {
  text-decoration: underline;
}

/* ============ DASHBOARD ============ */

.dashboard-container {
  display: flex;
  height: 100vh;
  background: #f7fafc;
}

/* Sidebar */
.sidebar {
  width: 280px;
  background: white;
  border-right: 1px solid #e2e8f0;
  display: flex;
  flex-direction: column;
  box-shadow: 2px 0 10px rgba(0, 0, 0, 0.05);
}

.sidebar-header {
  padding: 24px;
  display: flex;
  align-items: center;
  gap: 12px;
  border-bottom: 1px solid #e2e8f0;
}

.sidebar-logo {
  width: 40px;
  height: 40px;
}

.sidebar-title {
  font-size: 24px;
  font-weight: 800;
  background: linear-gradient(135deg, #667eea 0%, #764ba2 100%);
  -webkit-background-clip: text;
  -webkit-text-fill-color: transparent;
  background-clip: text;
}

.sidebar-nav {
  flex: 1;
  padding: 16px;
}

.nav-item {
  display: flex;
  align-items: center;
  gap: 12px;
  padding: 14px 16px;
  border-radius: 12px;
  color: #666;
  text-decoration: none;
  font-weight: 500;
  transition: all 0.2s;
  margin-bottom: 4px;
}

.nav-item:hover {
  background: #f7fafc;
  color: #333;
}

.nav-item.active {
  background: linear-gradient(135deg, #667eea 0%, #764ba2 100%);
  color: white;
}

.nav-icon {
  width: 20px;
  height: 20px;
}

.sidebar-footer {
  padding: 16px;
  border-top: 1px solid #e2e8f0;
}

/* Main Content */
.main-content {
  flex: 1;
  display: flex;
  flex-direction: column;
  overflow: hidden;
}

.dashboard-header {
  background: white;
  padding: 24px 32px;
  border-bottom: 1px solid #e2e8f0;
  display: flex;
  align-items: center;
  justify-content: space-between;
  box-shadow: 0 2px 8px rgba(0, 0, 0, 0.05);
}

.dashboard-header h1 {
  font-size: 28px;
  font-weight: 700;
  color: #1a202c;
}

.user-info {
  display: flex;
  align-items: center;
  gap: 12px;
}

.user-info span {
  font-weight: 600;
  color: #333;
}

.avatar {
  width: 40px;
  height: 40px;
  border-radius: 50%;
  background: linear-gradient(135deg, #667eea 0%, #764ba2 100%);
  color: white;
  display: flex;
  align-items: center;
  justify-content: center;
  font-weight: 700;
}

.content-area {
  flex: 1;
  overflow-y: auto;
  padding: 32px;
}

.page {
  display: none;
}

.page.active {
  display: block;
  animation: fadeIn 0.3s ease;
}

/* Stats Grid */
.stats-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(250px, 1fr));
  gap: 24px;
  margin-bottom: 32px;
}

.stat-card {
  background: white;
  padding: 24px;
  border-radius: 16px;
  box-shadow: 0 4px 12px rgba(0, 0, 0, 0.05);
  display: flex;
  align-items: center;
  gap: 16px;
  transition: transform 0.2s, box-shadow 0.2s;
}

.stat-card:hover {
  transform: translateY(-4px);
  box-shadow: 0 8px 24px rgba(0, 0, 0, 0.1);
}

.stat-icon {
  width: 56px;
  height: 56px;
  border-radius: 12px;
  display: flex;
  align-items: center;
  justify-content: center;
  flex-shrink: 0;
}

.stat-icon svg {
  width: 28px;
  height: 28px;
}

.stat-content {
  flex: 1;
}

.stat-label {
  font-size: 14px;
  color: #666;
  margin-bottom: 4px;
}

.stat-value {
  font-size: 32px;
  font-weight: 700;
  color: #1a202c;
  margin-bottom: 4px;
}

.stat-change {
  font-size: 12px;
  color: #48bb78;
}

/* Charts */
.chart-section {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(400px, 1fr));
  gap: 24px;
}

.chart-card {
  background: white;
  padding: 24px;
  border-radius: 16px;
  box-shadow: 0 4px 12px rgba(0, 0, 0, 0.05);
}

.chart-card h3 {
  margin-bottom: 20px;
  font-size: 18px;
  font-weight: 600;
}

/* Tools Grid */
.tools-grid-dashboard {
  display: grid;
  grid-template-columns: repeat(auto-fill, minmax(300px, 1fr));
  gap: 24px;
}

.tool-card-dashboard {
  background: white;
  padding: 32px;
  border-radius: 16px;
  box-shadow: 0 4px 12px rgba(0, 0, 0, 0.05);
  transition: transform 0.2s, box-shadow 0.2s;
}

.tool-card-dashboard:hover {
  transform: translateY(-4px);
  box-shadow: 0 8px 24px rgba(0, 0, 0, 0.1);
}

.tool-header {
  display: flex;
  align-items: center;
  gap: 16px;
  margin-bottom: 16px;
}

.tool-icon-dash {
  width: 48px;
  height: 48px;
  border-radius: 12px;
  display: flex;
  align-items: center;
  justify-content: center;
}

.tool-icon-dash svg {
  width: 24px;
  height: 24px;
}

.tool-card-dashboard h3 {
  font-size: 20px;
  font-weight: 700;
}

.tool-card-dashboard p {
  color: #666;
  margin-bottom: 20px;
}

/* Analytics */
.analytics-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(400px, 1fr));
  gap: 24px;
}

.analytics-card {
  background: white;
  padding: 24px;
  border-radius: 16px;
  box-shadow: 0 4px 12px rgba(0, 0, 0, 0.05);
}

.analytics-card h3 {
  margin-bottom: 20px;
  font-size: 18px;
  font-weight: 600;
}

/* Usage */
.usage-cards {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(300px, 1fr));
  gap: 24px;
}

.usage-card {
  background: white;
  padding: 24px;
  border-radius: 16px;
  box-shadow: 0 4px 12px rgba(0, 0, 0, 0.05);
}

.usage-card h3 {
  margin-bottom: 16px;
  font-size: 18px;
  font-weight: 600;
}

.usage-bar {
  width: 100%;
  height: 12px;
  background: #e2e8f0;
  border-radius: 6px;
  overflow: hidden;
  margin-bottom: 12px;
}

.usage-fill {
  height: 100%;
  background: linear-gradient(135deg, #667eea 0%, #764ba2 100%);
  transition: width 0.3s ease;
}

.usage-card p {
  color: #666;
  font-weight: 600;
}

/* Settings */
.settings-section {
  background: white;
  padding: 24px;
  border-radius: 16px;
  box-shadow: 0 4px 12px rgba(0, 0, 0, 0.05);
  margin-bottom: 24px;
}

.settings-section h3 {
  margin-bottom: 16px;
  font-size: 18px;
  font-weight: 600;
}

.api-token-display {
  display: flex;
  gap: 12px;
  margin-bottom: 12px;
}

.api-token-display input {
  flex: 1;
  padding: 12px;
  border: 2px solid #e2e8f0;
  border-radius: 12px;
  font-family: 'Courier New', monospace;
  font-size: 13px;
}

.help-text {
  font-size: 14px;
  color: #666;
}

/* Modal */
.modal {
  position: fixed;
  top: 0;
  left: 0;
  width: 100%;
  height: 100%;
  background: rgba(0, 0, 0, 0.5);
  display: flex;
  align-items: center;
  justify-content: center;
  z-index: 1000;
  animation: fadeIn 0.2s ease;
}

.modal-content {
  background: white;
  width: 90%;
  max-width: 800px;
  max-height: 90vh;
  border-radius: 16px;
  overflow: hidden;
  box-shadow: 0 20px 60px rgba(0, 0, 0, 0.3);
  display: flex;
  flex-direction: column;
}

.modal-header {
  padding: 24px;
  border-bottom: 1px solid #e2e8f0;
  display: flex;
  align-items: center;
  justify-content: space-between;
}

.modal-header h2 {
  font-size: 24px;
  font-weight: 700;
}

.modal-close {
  width: 36px;
  height: 36px;
  border: none;
  background: #f7fafc;
  border-radius: 8px;
  font-size: 24px;
  cursor: pointer;
  transition: all 0.2s;
}

.modal-close:hover {
  background: #e2e8f0;
}

.modal-body {
  padding: 24px;
  overflow-y: auto;
}

/* Animations */
@keyframes fadeIn {
  from {
    opacity: 0;
    transform: translateY(10px);
  }
  to {
    opacity: 1;
    transform: translateY(0);
  }
}

/* Responsive */
@media (max-width: 768px) {
  .sidebar {
    width: 0;
    overflow: hidden;
  }
  
  .stats-grid {
    grid-template-columns: 1fr;
  }
  
  .chart-section {
    grid-template-columns: 1fr;
  }
  
  .tools-grid-dashboard {
    grid-template-columns: 1fr;
  }
}