/* ============================
   Custom CSS - Analytics Dashboard
   ============================ */

/* Google Fonts */
@import url('https://fonts.googleapis.com/css2?family=Inter:wght@300;400;500;600;700;800&display=swap');

/* Base */
* {
  font-family: 'Inter', sans-serif;
}

body {
  background: #f0f2f5;
  min-height: 100vh;
}

/* Scrollbar */
::-webkit-scrollbar {
  width: 6px;
  height: 6px;
}
::-webkit-scrollbar-track {
  background: #f1f1f1;
  border-radius: 10px;
}
::-webkit-scrollbar-thumb {
  background: #c1c1c1;
  border-radius: 10px;
}
::-webkit-scrollbar-thumb:hover {
  background: #a1a1a1;
}

/* Loading Skeleton */
.skeleton {
  background: linear-gradient(90deg, #e0e0e0 25%, #f0f0f0 50%, #e0e0e0 75%);
  background-size: 200% 100%;
  animation: shimmer 1.5s infinite;
  border-radius: 6px;
}

@keyframes shimmer {
  0% { background-position: -200% 0; }
  100% { background-position: 200% 0; }
}

/* Spinner */
.spinner {
  border: 3px solid rgba(59, 130, 246, 0.15);
  border-top-color: #3b82f6;
  border-radius: 50%;
  width: 36px;
  height: 36px;
  animation: spin 0.8s linear infinite;
}

@keyframes spin {
  to { transform: rotate(360deg); }
}

/* Cards */
.metric-card {
  background: #ffffff;
  border-radius: 12px;
  padding: 20px;
  box-shadow: 0 1px 3px rgba(0, 0, 0, 0.06), 0 1px 2px rgba(0, 0, 0, 0.04);
  transition: all 0.3s cubic-bezier(0.4, 0, 0.2, 1);
  border: 1px solid rgba(0, 0, 0, 0.04);
}

.metric-card:hover {
  transform: translateY(-2px);
  box-shadow: 0 10px 25px rgba(0, 0, 0, 0.08), 0 4px 10px rgba(0, 0, 0, 0.04);
}

.metric-card .metric-value {
  font-size: 1.75rem;
  font-weight: 700;
  color: #1a1a2e;
  line-height: 1.2;
}

.metric-card .metric-label {
  font-size: 0.8rem;
  font-weight: 500;
  color: #6b7280;
  text-transform: uppercase;
  letter-spacing: 0.05em;
  margin-bottom: 6px;
}

.metric-card .metric-icon {
  width: 42px;
  height: 42px;
  border-radius: 10px;
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 1.2rem;
}

/* Chart containers */
.chart-container {
  background: #ffffff;
  border-radius: 12px;
  padding: 24px;
  box-shadow: 0 1px 3px rgba(0, 0, 0, 0.06), 0 1px 2px rgba(0, 0, 0, 0.04);
  border: 1px solid rgba(0, 0, 0, 0.04);
}

.chart-container h3 {
  font-size: 1rem;
  font-weight: 600;
  color: #1f2937;
  margin-bottom: 16px;
}

/* Tables */
.data-table {
  width: 100%;
  border-collapse: separate;
  border-spacing: 0;
}

.data-table thead th {
  background: #f8fafc;
  padding: 10px 14px;
  font-size: 0.75rem;
  font-weight: 600;
  color: #64748b;
  text-transform: uppercase;
  letter-spacing: 0.05em;
  border-bottom: 2px solid #e2e8f0;
  text-align: left;
  white-space: nowrap;
}

.data-table tbody td {
  padding: 10px 14px;
  font-size: 0.83rem;
  color: #374151;
  border-bottom: 1px solid #f1f5f9;
}

.data-table tbody tr {
  transition: background 0.15s ease;
}

.data-table tbody tr:hover {
  background: #f8fafc;
}

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

/* Numeric columns right-aligned */
.data-table .num {
  text-align: right;
  font-variant-numeric: tabular-nums;
}

/* Section tabs */
.tab-btn {
  padding: 8px 18px;
  font-size: 0.85rem;
  font-weight: 500;
  color: #6b7280;
  border-bottom: 2px solid transparent;
  cursor: pointer;
  transition: all 0.2s ease;
  background: none;
  border-top: none;
  border-left: none;
  border-right: none;
  white-space: nowrap;
}

.tab-btn:hover {
  color: #3b82f6;
}

.tab-btn.active {
  color: #3b82f6;
  border-bottom-color: #3b82f6;
  font-weight: 600;
}

/* Login screen */
.login-screen {
  min-height: 100vh;
  display: flex;
  align-items: center;
  justify-content: center;
  background: linear-gradient(135deg, #0f172a 0%, #1e293b 50%, #0f172a 100%);
  position: relative;
  overflow: hidden;
}

.login-screen::before {
  content: '';
  position: absolute;
  width: 500px;
  height: 500px;
  background: radial-gradient(circle, rgba(59, 130, 246, 0.15), transparent 70%);
  top: -100px;
  right: -100px;
  border-radius: 50%;
}

.login-screen::after {
  content: '';
  position: absolute;
  width: 400px;
  height: 400px;
  background: radial-gradient(circle, rgba(16, 185, 129, 0.1), transparent 70%);
  bottom: -80px;
  left: -80px;
  border-radius: 50%;
}

.login-card {
  background: rgba(255, 255, 255, 0.03);
  backdrop-filter: blur(20px);
  border: 1px solid rgba(255, 255, 255, 0.08);
  border-radius: 20px;
  padding: 48px 40px;
  max-width: 440px;
  width: 100%;
  text-align: center;
  position: relative;
  z-index: 1;
  box-shadow: 0 25px 60px rgba(0, 0, 0, 0.3);
}

.google-btn {
  display: inline-flex;
  align-items: center;
  gap: 12px;
  padding: 14px 32px;
  background: #ffffff;
  color: #374151;
  border: none;
  border-radius: 12px;
  font-size: 0.95rem;
  font-weight: 600;
  cursor: pointer;
  transition: all 0.3s ease;
  box-shadow: 0 2px 8px rgba(0, 0, 0, 0.1);
}

.google-btn:hover {
  transform: translateY(-2px);
  box-shadow: 0 6px 20px rgba(0, 0, 0, 0.15);
}

.demo-btn {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  padding: 12px 28px;
  background: transparent;
  color: #94a3b8;
  border: 1px solid rgba(148, 163, 184, 0.3);
  border-radius: 12px;
  font-size: 0.85rem;
  font-weight: 500;
  cursor: pointer;
  transition: all 0.3s ease;
}

.demo-btn:hover {
  border-color: #3b82f6;
  color: #3b82f6;
  background: rgba(59, 130, 246, 0.05);
}

/* Toast notifications */
.toast {
  position: fixed;
  top: 20px;
  right: 20px;
  padding: 14px 20px;
  border-radius: 10px;
  font-size: 0.85rem;
  font-weight: 500;
  z-index: 9999;
  animation: slideIn 0.3s ease, fadeOut 0.3s ease 3.7s forwards;
  max-width: 380px;
  box-shadow: 0 4px 15px rgba(0, 0, 0, 0.12);
}

.toast.success {
  background: #ecfdf5;
  color: #065f46;
  border-left: 4px solid #10b981;
}

.toast.error {
  background: #fef2f2;
  color: #991b1b;
  border-left: 4px solid #ef4444;
}

.toast.info {
  background: #eff6ff;
  color: #1e40af;
  border-left: 4px solid #3b82f6;
}

@keyframes slideIn {
  from { transform: translateX(100%); opacity: 0; }
  to { transform: translateX(0); opacity: 1; }
}

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

/* Date picker */
.date-input {
  padding: 8px 14px;
  border: 1px solid #d1d5db;
  border-radius: 8px;
  font-size: 0.85rem;
  color: #374151;
  background: white;
  outline: none;
  transition: border-color 0.2s;
}

.date-input:focus {
  border-color: #3b82f6;
  box-shadow: 0 0 0 3px rgba(59, 130, 246, 0.1);
}

/* Fade in animation */
.fade-in {
  animation: fadeIn 0.4s ease;
}

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

/* Pulse dot */
.pulse-dot {
  width: 8px;
  height: 8px;
  border-radius: 50%;
  background: #10b981;
  animation: pulse 2s infinite;
}

@keyframes pulse {
  0%, 100% { opacity: 1; }
  50% { opacity: 0.4; }
}

/* Responsive */
@media (max-width: 768px) {
  .metric-card {
    padding: 14px;
  }
  .metric-card .metric-value {
    font-size: 1.4rem;
  }
  .chart-container {
    padding: 16px;
  }
  .login-card {
    padding: 32px 24px;
    margin: 16px;
  }
}

/* Progress bar */
.progress-bar {
  height: 6px;
  background: #e5e7eb;
  border-radius: 3px;
  overflow: hidden;
}

.progress-bar .fill {
  height: 100%;
  border-radius: 3px;
  transition: width 0.6s ease;
}

/* Badge */
.badge {
  display: inline-flex;
  align-items: center;
  padding: 2px 8px;
  border-radius: 9999px;
  font-size: 0.7rem;
  font-weight: 600;
}

/* Header gradient */
.header-gradient {
  background: linear-gradient(135deg, #1e40af 0%, #3b82f6 100%);
}