frontend/src/index.css

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

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

:root {
  --gradient-1: linear-gradient(135deg, #667eea 0%, #764ba2 100%);
  --gradient-2: linear-gradient(135deg, #f093fb 0%, #f5576c 100%);
  --gradient-3: linear-gradient(135deg, #4facfe 0%, #00f2fe 100%);
  --gradient-4: linear-gradient(135deg, #43e97b 0%, #38f9d7 100%);

  --primary: #3b82f6;
  --secondary: #10b981;
  --accent: #f59e0b;
  --error: #ef4444;
  --warning: #f59e0b;
  --success: #10b981;
  --info: #3b82f6;

  --blue-500: #3b82f6;
  --blue-600: #2563eb;
  --blue-700: #1d4ed8;

  --purple-500: #8b5cf6;
  --purple-600: #7c3aed;

  --pink-500: #ec4899;
  --pink-600: #db2777;

  --text-primary: #1f2937;
  --text-secondary: #6b7280;

  --radius-sm: 0.375rem;
  --radius-lg: 0.75rem;

  --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;
}

body {
  font-family: 'Inter', -apple-system, BlinkMacSystemFont, 'Segoe UI', sans-serif;
  -webkit-font-smoothing: antialiased;
  -moz-osx-font-smoothing: grayscale;
  background: linear-gradient(135deg, #ffffff 0%, #f8f9fa 50%, #ffffff 100%);
  background-attachment: fixed;
  min-height: 100vh;
  color: #1f2937;
}

.container {
  max-width: 1280px;
  margin: 0 auto;
  padding: 0 1.5rem;
}

/* Premium Glass Morphism */
.glass-panel {
  background: rgba(255, 255, 255, 0.95);
  backdrop-filter: blur(30px) saturate(180%);
  -webkit-backdrop-filter: blur(30px) saturate(180%);
  border-radius: 24px;
  border: 1px solid rgba(255, 255, 255, 0.5);
  box-shadow:
    0 20px 60px rgba(0, 0, 0, 0.15),
    0 8px 16px rgba(0, 0, 0, 0.1),
    inset 0 1px 0 rgba(255, 255, 255, 0.8);
  padding: 2.5rem;
  transition: all 0.4s cubic-bezier(0.4, 0, 0.2, 1);
  position: relative;
  overflow: hidden;
}

.glass-panel::before {
  content: '';
  position: absolute;
  top: 0;
  left: -100%;
  width: 100%;
  height: 100%;
  background: linear-gradient(90deg, transparent, rgba(255, 255, 255, 0.3), transparent);
  transition: left 0.7s;
}

.glass-panel:hover::before {
  left: 100%;
}

.glass-panel:hover {
  transform: translateY(-8px);
  box-shadow:
    0 30px 80px rgba(0, 0, 0, 0.2),
    0 12px 24px rgba(0, 0, 0, 0.15),
    inset 0 1px 0 rgba(255, 255, 255, 0.9);
}

/* Premium Cards */
.glass-card {
  background: rgba(255, 255, 255, 0.9);
  backdrop-filter: blur(20px);
  border-radius: 16px;
  border: 1px solid rgba(255, 255, 255, 0.4);
  padding: 1.75rem;
  box-shadow:
    0 10px 30px rgba(0, 0, 0, 0.1),
    0 4px 8px rgba(0, 0, 0, 0.05);
  transition: all 0.3s cubic-bezier(0.4, 0, 0.2, 1);
  cursor: pointer;
}

.glass-card:hover {
  transform: translateY(-6px) scale(1.02);
  box-shadow:
    0 20px 50px rgba(0, 0, 0, 0.15),
    0 8px 16px rgba(59, 130, 246, 0.2);
  border-color: rgba(59, 130, 246, 0.5);
}

/* Premium Buttons */
.btn {
  padding: 0.875rem 1.75rem;
  border-radius: 12px;
  border: none;
  font-weight: 600;
  font-size: 0.95rem;
  cursor: pointer;
  transition: all 0.3s cubic-bezier(0.4, 0, 0.2, 1);
  display: inline-flex;
  align-items: center;
  gap: 0.625rem;
  position: relative;
  overflow: hidden;
  box-shadow: 0 4px 12px rgba(0, 0, 0, 0.15);
}

.btn::before {
  content: '';
  position: absolute;
  top: 50%;
  left: 50%;
  width: 0;
  height: 0;
  border-radius: 50%;
  background: rgba(255, 255, 255, 0.4);
  transform: translate(-50%, -50%);
  transition: width 0.6s, height 0.6s;
}

.btn:hover::before {
  width: 400px;
  height: 400px;
}

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

.btn-primary:hover {
  transform: translateY(-3px);
  box-shadow: 0 8px 20px rgba(102, 126, 234, 0.4);
}

.btn-primary:active {
  transform: translateY(-1px);
}

.btn-secondary {
  background: rgba(255, 255, 255, 0.95);
  color: #667eea;
  border: 2px solid rgba(102, 126, 234, 0.3);
}

.btn-secondary:hover {
  background: rgba(102, 126, 234, 0.1);
  border-color: #667eea;
  transform: translateY(-2px);
}

.btn:disabled {
  opacity: 0.6;
  cursor: not-allowed;
  transform: none !important;
}

/* Input Fields */
.glass-input {
  background: rgba(255, 255, 255, 0.95);
  border: 2px solid rgba(102, 126, 234, 0.2);
  border-radius: 12px;
  padding: 0.875rem 1.25rem;
  font-size: 1rem;
  color: #1f2937;
  transition: all 0.3s ease;
  width: 100%;
  font-family: 'Inter', sans-serif;
}

.glass-input:focus {
  outline: none;
  border-color: #667eea;
  box-shadow: 0 0 0 4px rgba(102, 126, 234, 0.1);
  background: white;
}

/* Upload Area */
.upload-area {
  border: 3px dashed rgba(102, 126, 234, 0.3);
  border-radius: 20px;
  padding: 4rem 2rem;
  text-align: center;
  background: linear-gradient(135deg, rgba(102, 126, 234, 0.05) 0%, rgba(118, 75, 162, 0.05) 100%);
  transition: all 0.3s cubic-bezier(0.4, 0, 0.2, 1);
  cursor: pointer;
  position: relative;
  overflow: hidden;
}

.upload-area::before {
  content: '';
  position: absolute;
  top: -50%;
  left: -50%;
  width: 200%;
  height: 200%;
  background: radial-gradient(circle, rgba(102, 126, 234, 0.1) 0%, transparent 70%);
  opacity: 0;
  transition: opacity 0.3s;
}

.upload-area:hover::before {
  opacity: 1;
}

.upload-area:hover {
  border-color: #667eea;
  background: linear-gradient(135deg, rgba(102, 126, 234, 0.1) 0%, rgba(118, 75, 162, 0.1) 100%);
  transform: scale(1.02);
}

.upload-area.drag-active {
  border-color: #764ba2;
  background: linear-gradient(135deg, rgba(102, 126, 234, 0.15) 0%, rgba(118, 75, 162, 0.15) 100%);
  transform: scale(1.05);
}

/* Progress Bar */
.progress-bar {
  width: 100%;
  height: 10px;
  background: rgba(102, 126, 234, 0.1);
  border-radius: 10px;
  overflow: hidden;
  box-shadow: inset 0 2px 4px rgba(0, 0, 0, 0.1);
}

.progress-fill {
  height: 100%;
  background: linear-gradient(90deg, #667eea 0%, #764ba2 50%, #f093fb 100%);
  background-size: 200% 100%;
  animation: progressShine 2s linear infinite;
  transition: width 0.3s ease;
  border-radius: 10px;
}

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

  100% {
    background-position: -200% 0;
  }
}

/* Loading Spinner */
.spinner {
  width: 48px;
  height: 48px;
  border: 5px solid rgba(102, 126, 234, 0.1);
  border-top-color: #667eea;
  border-radius: 50%;
  animation: spin 1s cubic-bezier(0.68, -0.55, 0.27, 1.55) infinite;
}

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

/* Alert Messages */
.alert {
  padding: 1.25rem 1.75rem;
  border-radius: 12px;
  margin-bottom: 1.25rem;
  border-left: 5px solid;
  backdrop-filter: blur(10px);
  font-weight: 500;
}

.alert-success {
  background: rgba(16, 185, 129, 0.1);
  border-color: #10b981;
  color: #065f46;
}

.alert-error {
  background: rgba(239, 68, 68, 0.1);
  border-color: #ef4444;
  color: #991b1b;
}

.alert-info {
  background: rgba(59, 130, 246, 0.1);
  border-color: #3b82f6;
  color: #1e40af;
}

/* Metric Cards */
.metric-card {
  background: linear-gradient(135deg, rgba(102, 126, 234, 0.1) 0%, rgba(118, 75, 162, 0.1) 100%);
  border-radius: 16px;
  padding: 2rem;
  border: 1px solid rgba(102, 126, 234, 0.2);
  text-align: center;
  transition: all 0.3s cubic-bezier(0.4, 0, 0.2, 1);
  position: relative;
  overflow: hidden;
}

.metric-card::before {
  content: '';
  position: absolute;
  top: -50%;
  right: -50%;
  width: 200%;
  height: 200%;
  background: radial-gradient(circle, rgba(255, 255, 255, 0.3) 0%, transparent 70%);
  opacity: 0;
  transition: opacity 0.3s;
}

.metric-card:hover::before {
  opacity: 1;
}

.metric-card:hover {
  transform: translateY(-8px) scale(1.05);
  box-shadow: 0 20px 40px rgba(102, 126, 234, 0.2);
  border-color: #667eea;
}

.metric-value {
  font-size: 2.5rem;
  font-weight: 800;
  background: linear-gradient(135deg, #667eea 0%, #764ba2 100%);
  -webkit-background-clip: text;
  -webkit-text-fill-color: transparent;
  margin-bottom: 0.5rem;
}

.metric-label {
  font-size: 0.95rem;
  color: #6b7280;
  font-weight: 600;
  text-transform: uppercase;
  letter-spacing: 0.5px;
}

/* Utility Classes */
.flex {
  display: flex;
}

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

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

.gap-2 {
  gap: 0.5rem;
}

.gap-3 {
  gap: 0.75rem;
}

/* Grid Classes */
.grid {
  display: grid;
}

.grid-cols-2 {
  grid-template-columns: repeat(2, 1fr);
}

.grid-cols-4 {
  grid-template-columns: repeat(4, 1fr);
}

.gap-4 {
  gap: 1rem;
}

/* Margin Classes */
.mb-4 {
  margin-bottom: 1rem;
}

@media (max-width: 768px) {

  .grid-cols-2,
  .grid-cols-4 {
    grid-template-columns: 1fr;
  }
}

/* Scrollbar */
::-webkit-scrollbar {
  width: 12px;
}

::-webkit-scrollbar-track {
  background: rgba(255, 255, 255, 0.1);
  border-radius: 10px;
}

::-webkit-scrollbar-thumb {
  background: linear-gradient(135deg, #667eea 0%, #764ba2 100%);
  border-radius: 10px;
  border: 2px solid rgba(255, 255, 255, 0.2);
}

::-webkit-scrollbar-thumb:hover {
  background: linear-gradient(135deg, #764ba2 0%, #667eea 100%);
}