/* Clean, Modern CSS for Phishing Email Analyzer */

:root {
  /* Colors */
  --primary: #3b82f6;
  --primary-dark: #2563eb;
  --primary-light: #dbeafe;
  --success: #10b981;
  --warning: #f59e0b;
  --danger: #ef4444;
  --info: #06b6d4;
  --gray-50: #f9fafb;
  --gray-100: #f3f4f6;
  --gray-200: #e5e7eb;
  --gray-300: #d1d5db;
  --gray-500: #6b7280;
  --gray-700: #374151;
  --gray-900: #111827;
  --white: #ffffff;
  
  /* Spacing */
  --space-1: 0.25rem;
  --space-2: 0.5rem;
  --space-3: 0.75rem;
  --space-4: 1rem;
  --space-5: 1.25rem;
  --space-6: 1.5rem;
  --space-8: 2rem;
  --space-12: 3rem;
  
  /* Typography */
  --font-sans: -apple-system, BlinkMacSystemFont, 'Segoe UI', Roboto, 'Helvetica Neue', Arial, sans-serif;
  --text-sm: 0.875rem;
  --text-base: 1rem;
  --text-lg: 1.125rem;
  --text-xl: 1.25rem;
  --text-2xl: 1.5rem;
  --text-3xl: 1.875rem;
  --text-4xl: 2.25rem;
  
  /* Borders */
  --radius-sm: 0.25rem;
  --radius: 0.375rem;
  --radius-md: 0.5rem;
  --radius-lg: 0.75rem;
  --radius-xl: 1rem;
  
  /* Shadows */
  --shadow-sm: 0 1px 2px 0 rgba(0, 0, 0, 0.05);
  --shadow: 0 1px 3px 0 rgba(0, 0, 0, 0.1), 0 1px 2px 0 rgba(0, 0, 0, 0.06);
  --shadow-md: 0 4px 6px -1px rgba(0, 0, 0, 0.1), 0 2px 4px -1px rgba(0, 0, 0, 0.06);
  --shadow-lg: 0 10px 15px -3px rgba(0, 0, 0, 0.1), 0 4px 6px -2px rgba(0, 0, 0, 0.05);
  
  /* Transitions */
  --transition: 0.15s ease-in-out;
}

/* Reset and Base */
*, *::before, *::after {
  box-sizing: border-box;
}

body {
  font-family: var(--font-sans);
  line-height: 1.5;
  color: var(--gray-900);
  background-color: var(--gray-50);
  margin: 0;
}

/* Typography */
h1, h2, h3, h4, h5, h6 {
  margin: 0 0 var(--space-4) 0;
  font-weight: 600;
  line-height: 1.25;
  color: var(--gray-900);
}

h1 { font-size: var(--text-4xl); }
h2 { font-size: var(--text-3xl); }
h3 { font-size: var(--text-2xl); }
h4 { font-size: var(--text-xl); }
h5 { font-size: var(--text-lg); }

p {
  margin: 0 0 var(--space-4) 0;
  color: var(--gray-700);
}

/* Navigation */
.navbar {
  background-color: var(--white);
  border-bottom: 1px solid var(--gray-200);
  box-shadow: var(--shadow-sm);
  position: sticky;
  top: 0;
  z-index: 50;
}

.navbar-brand {
  font-weight: 700;
  font-size: var(--text-xl);
  color: var(--primary);
  text-decoration: none;
}

.navbar-brand:hover {
  color: var(--primary-dark);
}

.nav-link {
  color: var(--gray-700);
  font-weight: 500;
  padding: var(--space-2) var(--space-4) !important;
  border-radius: var(--radius);
  transition: all var(--transition);
  text-decoration: none;
}

.nav-link:hover {
  color: var(--primary);
  background-color: var(--primary-light);
}

/* Cards */
.card {
  background: var(--white);
  border: 1px solid var(--gray-200);
  border-radius: var(--radius-lg);
  box-shadow: var(--shadow);
  overflow: hidden;
  transition: all var(--transition);
}

.card:hover {
  box-shadow: var(--shadow-md);
  transform: translateY(-1px);
}

.card-header {
  background-color: var(--gray-50);
  border-bottom: 1px solid var(--gray-200);
  padding: var(--space-6);
  font-weight: 600;
  color: var(--gray-900);
}

.card-body {
  padding: var(--space-6);
}

/* Buttons */
.btn {
  display: inline-flex;
  align-items: center;
  gap: var(--space-2);
  padding: var(--space-3) var(--space-6);
  font-size: var(--text-base);
  font-weight: 500;
  line-height: 1;
  border: 1px solid transparent;
  border-radius: var(--radius);
  cursor: pointer;
  transition: all var(--transition);
  text-decoration: none;
  justify-content: center;
}

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

.btn:active {
  transform: translateY(0);
}

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

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

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

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

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

.btn-outline-secondary {
  border-color: var(--gray-300);
  color: var(--gray-700);
}

.btn-outline-secondary:hover {
  background-color: var(--gray-100);
  color: var(--gray-900);
}

.btn-lg {
  padding: var(--space-4) var(--space-8);
  font-size: var(--text-lg);
}

.btn-sm {
  padding: var(--space-2) var(--space-4);
  font-size: var(--text-sm);
}

/* Loading States */
.btn.loading {
  opacity: 0.75;
  cursor: not-allowed;
}

.btn.loading:hover {
  transform: none;
}

/* Forms */
.form-control {
  width: 100%;
  padding: var(--space-3) var(--space-4);
  border: 1px solid var(--gray-300);
  border-radius: var(--radius);
  background-color: var(--white);
  transition: border-color var(--transition), box-shadow var(--transition);
}

.form-control:focus {
  outline: none;
  border-color: var(--primary);
  box-shadow: 0 0 0 3px rgba(59, 130, 246, 0.1);
}

.form-control-lg {
  padding: var(--space-4) var(--space-5);
  font-size: var(--text-lg);
}

.form-label {
  display: block;
  margin-bottom: var(--space-2);
  font-weight: 500;
  color: var(--gray-900);
}

/* File Upload */
.file-upload-wrapper .form-control {
  border: 2px dashed var(--gray-300);
  background-color: var(--gray-50);
  transition: all var(--transition);
}

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

.file-upload-help {
  margin-top: var(--space-2);
  font-size: var(--text-sm);
  color: var(--gray-500);
}

/* Alerts */
.alert {
  padding: var(--space-4);
  border-radius: var(--radius);
  border: 1px solid transparent;
  margin-bottom: var(--space-4);
  display: flex;
  align-items: flex-start;
  gap: var(--space-3);
}

.alert-success {
  background-color: rgb(16, 185, 129, 0.1);
  border-color: var(--success);
  color: var(--success);
}

.alert-warning {
  background-color: rgb(245, 158, 11, 0.1);
  border-color: var(--warning);
  color: var(--warning);
}

.alert-danger {
  background-color: rgb(239, 68, 68, 0.1);
  border-color: var(--danger);
  color: var(--danger);
}

.alert-info {
  background-color: rgb(6, 182, 212, 0.1);
  border-color: var(--info);
  color: var(--info);
}

/* Badges */
.badge {
  display: inline-flex;
  align-items: center;
  gap: var(--space-1);
  padding: var(--space-2) var(--space-3);
  font-size: var(--text-sm);
  font-weight: 500;
  border-radius: var(--radius);
}

.bg-success { background-color: var(--success) !important; color: var(--white); }
.bg-warning { background-color: var(--warning) !important; color: var(--white); }
.bg-danger { background-color: var(--danger) !important; color: var(--white); }

/* Tables */
.table {
  width: 100%;
  border-collapse: collapse;
}

.table th,
.table td {
  padding: var(--space-4);
  text-align: left;
  border-bottom: 1px solid var(--gray-200);
}

.table th {
  background-color: var(--gray-50);
  font-weight: 600;
  color: var(--gray-900);
}

.table tbody tr:hover {
  background-color: var(--gray-50);
}

.table-responsive {
  overflow-x: auto;
  border-radius: var(--radius-lg);
  border: 1px solid var(--gray-200);
}

/* Progress Overlay */
.analysis-progress {
  position: fixed;
  top: 0;
  left: 0;
  right: 0;
  bottom: 0;
  background: rgba(0, 0, 0, 0.8);
  display: flex;
  align-items: center;
  justify-content: center;
  z-index: 9999;
  opacity: 0;
  visibility: hidden;
  transition: all 0.3s ease;
}

.analysis-progress.show {
  opacity: 1;
  visibility: visible;
}

.progress-container {
  background: var(--white);
  border-radius: var(--radius-xl);
  padding: var(--space-8);
  max-width: 500px;
  width: 90%;
  box-shadow: var(--shadow-lg);
  text-align: center;
}

.progress-bar-container {
  width: 100%;
  height: 8px;
  background: var(--gray-200);
  border-radius: var(--radius);
  overflow: hidden;
  margin-bottom: var(--space-8);
}

.progress-bar {
  height: 100%;
  background: var(--primary);
  border-radius: var(--radius);
  transition: width 0.5s ease;
  position: relative;
}

.progress-bar::after {
  content: '';
  position: absolute;
  top: 0;
  left: 0;
  bottom: 0;
  right: 0;
  background: linear-gradient(90deg, transparent, rgba(255, 255, 255, 0.4), transparent);
  animation: shimmer 2s infinite;
}

.progress-steps {
  text-align: left;
  margin-bottom: var(--space-6);
}

.progress-step {
  display: flex;
  align-items: center;
  margin-bottom: var(--space-4);
  padding: var(--space-3);
  border-radius: var(--radius);
  transition: all 0.3s ease;
  background: var(--gray-50);
}

.progress-step.active {
  background: var(--primary-light);
  transform: scale(1.02);
}

.progress-step.completed {
  background: rgb(16, 185, 129, 0.1);
}

.progress-icon {
  width: 40px;
  height: 40px;
  border-radius: 50%;
  background: var(--gray-300);
  color: var(--gray-500);
  display: flex;
  align-items: center;
  justify-content: center;
  margin-right: var(--space-4);
  transition: all 0.3s ease;
}

.progress-step.active .progress-icon {
  background: var(--primary);
  color: var(--white);
  animation: pulse 2s infinite;
}

.progress-step.completed .progress-icon {
  background: var(--success);
  color: var(--white);
}

.progress-text {
  flex: 1;
}

.progress-title {
  font-weight: 600;
  color: var(--gray-900);
  margin-bottom: var(--space-1);
}

.progress-description {
  font-size: var(--text-sm);
  color: var(--gray-500);
  margin: 0;
}

/* Animations */
@keyframes shimmer {
  0% { transform: translateX(-100%); }
  100% { transform: translateX(100%); }
}

@keyframes pulse {
  0%, 100% { opacity: 1; transform: scale(1); }
  50% { opacity: 0.8; transform: scale(1.05); }
}

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

@keyframes slideUp {
  from {
    opacity: 0;
    transform: translateY(30px);
  }
  to {
    opacity: 1;
    transform: translateY(0);
  }
}

@keyframes slideDown {
  from {
    opacity: 0;
    transform: translateY(-20px);
  }
  to {
    opacity: 1;
    transform: translateY(0);
  }
}

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

@keyframes bounceIn {
  0% {
    opacity: 0;
    transform: scale(0.3);
  }
  50% {
    opacity: 1;
    transform: scale(1.05);
  }
  70% {
    transform: scale(0.9);
  }
  100% {
    opacity: 1;
    transform: scale(1);
  }
}

@keyframes shake {
  0%, 100% { transform: translateX(0); }
  10%, 30%, 50%, 70%, 90% { transform: translateX(-5px); }
  20%, 40%, 60%, 80% { transform: translateX(5px); }
}

@keyframes glow {
  0%, 100% { box-shadow: 0 0 5px rgba(59, 130, 246, 0.5); }
  50% { box-shadow: 0 0 20px rgba(59, 130, 246, 0.8), 0 0 30px rgba(59, 130, 246, 0.4); }
}

.fa-spin {
  animation: spin 1s linear infinite;
}

/* Page Load Animations */
body {
  animation: fadeIn 0.5s ease-out;
}

.card {
  animation: slideUp 0.6s ease-out forwards;
  opacity: 0;
}

.card:nth-child(1) { animation-delay: 0.1s; }
.card:nth-child(2) { animation-delay: 0.2s; }
.card:nth-child(3) { animation-delay: 0.3s; }
.card:nth-child(4) { animation-delay: 0.4s; }

/* Button Animations */
.btn {
  position: relative;
  overflow: hidden;
}

.btn::before {
  content: '';
  position: absolute;
  top: 50%;
  left: 50%;
  width: 0;
  height: 0;
  background: rgba(255, 255, 255, 0.3);
  border-radius: 50%;
  transform: translate(-50%, -50%);
  transition: width 0.3s, height 0.3s;
}

.btn:active::before {
  width: 300px;
  height: 300px;
}

/* Alert Animations */
.alert {
  animation: slideDown 0.3s ease-out;
}

.alert.fade-out {
  animation: slideUp 0.3s ease-in forwards;
  opacity: 0;
  transform: translateY(-20px);
}

/* Badge Animations */
.badge {
  animation: bounceIn 0.5s ease-out;
}

.verdict-badge .badge {
  position: relative;
}

.verdict-badge .bg-success {
  animation: glow 2s ease-in-out infinite;
}

.verdict-badge .bg-danger {
  animation: shake 0.5s ease-in-out;
}

/* Form Animations */
.form-control:focus {
  animation: glow 0.3s ease-out;
}

.form-control.error {
  animation: shake 0.5s ease-in-out;
  border-color: var(--danger);
}

/* File Upload Animations */
.file-upload-wrapper.drag-over .form-control {
  animation: pulse 1s ease-in-out infinite;
  border-color: var(--primary);
  background-color: var(--primary-light);
  transform: scale(1.02);
}

/* Loading Button Animation */
.btn.loading::after {
  content: '';
  position: absolute;
  top: 50%;
  left: 50%;
  width: 20px;
  height: 20px;
  border: 2px solid transparent;
  border-top: 2px solid currentColor;
  border-radius: 50%;
  animation: spin 1s linear infinite;
  transform: translate(-50%, -50%);
}

/* Table Row Animations */
.table tbody tr {
  transition: all 0.2s ease;
}

.table tbody tr:hover {
  transform: translateX(5px);
  background-color: var(--gray-50);
  box-shadow: var(--shadow-sm);
}

/* Progress Step Animations */
.progress-step {
  transition: all 0.3s cubic-bezier(0.4, 0, 0.2, 1);
}

.progress-step.active {
  animation: pulse 2s ease-in-out infinite;
}

.progress-step.completed .progress-icon {
  animation: bounceIn 0.5s ease-out;
}

/* Navbar Animation */
.navbar {
  animation: slideDown 0.5s ease-out;
}

.nav-link {
  position: relative;
  overflow: hidden;
}

.nav-link::before {
  content: '';
  position: absolute;
  bottom: 0;
  left: 0;
  width: 0;
  height: 2px;
  background: var(--primary);
  transition: width 0.3s ease;
}

.nav-link:hover::before {
  width: 100%;
}

/* Card Hover Effects */
.card::before {
  content: '';
  position: absolute;
  top: 0;
  left: -100%;
  width: 100%;
  height: 100%;
  background: linear-gradient(90deg, transparent, rgba(255, 255, 255, 0.4), transparent);
  transition: left 0.5s;
}

.card:hover::before {
  left: 100%;
}

/* Success Animation for Completed Actions */
@keyframes checkmark {
  0% {
    height: 0;
    width: 0;
    opacity: 1;
  }
  20% {
    height: 0;
    width: 7px;
    opacity: 1;
  }
  40% {
    height: 14px;
    width: 7px;
    opacity: 1;
  }
  100% {
    height: 14px;
    width: 7px;
    opacity: 1;
  }
}

.checkmark {
  display: inline-block;
  width: 22px;
  height: 22px;
  border-radius: 50%;
  background: var(--success);
  position: relative;
}

.checkmark::after {
  content: '';
  position: absolute;
  top: 6px;
  left: 8px;
  width: 7px;
  height: 14px;
  border: solid white;
  border-width: 0 2px 2px 0;
  transform: rotate(45deg);
  animation: checkmark 0.5s ease-in-out;
}

/* Responsive Animation Adjustments */
@media (max-width: 768px) {
  .card {
    animation-duration: 0.4s;
  }
  
  .table tbody tr:hover {
    transform: translateX(2px);
  }
  
  .btn:hover {
    transform: translateY(-1px);
  }
}

@media (prefers-reduced-motion: reduce) {
  *, *::before, *::after {
    animation-duration: 0.01ms !important;
    animation-iteration-count: 1 !important;
    transition-duration: 0.01ms !important;
  }
}

/* Utilities */
.text-center { text-align: center; }
.text-muted { color: var(--gray-500); }
.text-primary { color: var(--primary); }
.text-success { color: var(--success); }
.text-warning { color: var(--warning); }
.text-danger { color: var(--danger); }
.fw-bold { font-weight: 700; }
.fw-semibold { font-weight: 600; }
.mb-0 { margin-bottom: 0; }
.mb-2 { margin-bottom: var(--space-2); }
.mb-3 { margin-bottom: var(--space-3); }
.mb-4 { margin-bottom: var(--space-4); }
.me-2 { margin-right: var(--space-2); }
.mt-3 { margin-top: var(--space-3); }
.mt-5 { margin-top: var(--space-5); }
.pt-4 { padding-top: var(--space-4); }
.py-4 { padding-top: var(--space-4); padding-bottom: var(--space-4); }
.d-flex { display: flex; }
.align-items-center { align-items: center; }
.justify-content-center { justify-content: center; }
.gap-3 { gap: var(--space-3); }
.small { font-size: var(--text-sm); }

/* Responsive */
@media (max-width: 768px) {
  .container-fluid {
    padding-left: var(--space-4);
    padding-right: var(--space-4);
  }
  
  .card-header,
  .card-body {
    padding: var(--space-4);
  }
  
  .btn-lg {
    padding: var(--space-3) var(--space-6);
    font-size: var(--text-base);
  }
  
  .progress-container {
    padding: var(--space-6);
  }
  
  .progress-step {
    flex-direction: column;
    text-align: center;
  }
  
  .progress-icon {
    margin-right: 0;
    margin-bottom: var(--space-2);
  }
  
  h1 { font-size: var(--text-3xl); }
  h2 { font-size: var(--text-2xl); }
  h3 { font-size: var(--text-xl); }
}

@media (max-width: 640px) {
  .btn {
    width: 100%;
    justify-content: center;
  }
  
  .table th,
  .table td {
    padding: var(--space-3);
    font-size: var(--text-sm);
  }
}