/* ========================================
   LOGIN PAGE - PROFESSIONAL DESIGN
   ======================================== */

/* TEST STYLE - Pour vérifier le chargement */
body {
  background: linear-gradient(135deg, #1F4880 0%, #1a3a6b 25%, #0f2942 100%) !important;
}

/* Variables CSS */
:root {
  --primary: #1F4880;
  --primary-dark: #1a3a6b;
  --primary-light: #2956a0;
  --secondary: #64748b;
  --success: #10b981;
  --danger: #ef4444;
  --warning: #f59e0b;
  --info: #3b82f6;
  
  --white: #ffffff;
  --gray-50: #f8fafc;
  --gray-100: #f1f5f9;
  --gray-200: #e2e8f0;
  --gray-300: #cbd5e1;
  --gray-400: #94a3b8;
  --gray-500: #64748b;
  --gray-600: #475569;
  --gray-700: #334155;
  --gray-800: #1e293b;
  --gray-900: #0f172a;
  
  --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);
  --shadow-xl: 0 20px 25px -5px rgba(0, 0, 0, 0.1), 0 10px 10px -5px rgba(0, 0, 0, 0.04);
  --shadow-2xl: 0 25px 50px -12px rgba(0, 0, 0, 0.25);
  
  --radius-sm: 0.25rem;
  --radius: 0.5rem;
  --radius-md: 0.75rem;
  --radius-lg: 1rem;
  --radius-xl: 1.5rem;
  --radius-2xl: 2rem;
  
  --spacing-xs: 0.25rem;
  --spacing-sm: 0.5rem;
  --spacing: 1rem;
  --spacing-md: 1.5rem;
  --spacing-lg: 2rem;
  --spacing-xl: 3rem;
  --spacing-2xl: 4rem;
  
  --transition: all 0.3s cubic-bezier(0.4, 0, 0.2, 1);
  --transition-fast: all 0.2s cubic-bezier(0.4, 0, 0.2, 1);
}

/* Reset & Base */
* {
  margin: 0;
  padding: 0;
  box-sizing: border-box;
}

body {
  font-family: -apple-system, BlinkMacSystemFont, 'Segoe UI', Roboto, 'Helvetica Neue', Arial, sans-serif;
  background: var(--gray-50);
  color: var(--gray-900);
  line-height: 1.6;
  font-size: 16px;
  -webkit-font-smoothing: antialiased;
  -moz-osx-font-smoothing: grayscale;
}

/* ========================================
   LOGIN CONTAINER - PREMIUM DESIGN
   ======================================== */

.login-container {
  min-height: 100vh;
  background: linear-gradient(135deg, var(--primary) 0%, var(--primary-dark) 25%, #0f2942 100%);
  display: flex;
  align-items: center;
  justify-content: center;
  padding: var(--spacing-lg);
  position: relative;
  overflow: hidden;
}

/* Background Pattern */
.login-container::before {
  content: '';
  position: absolute;
  top: 0;
  left: 0;
  right: 0;
  bottom: 0;
  background-image: 
    radial-gradient(circle at 20% 80%, rgba(255, 255, 255, 0.1) 0%, transparent 50%),
    radial-gradient(circle at 80% 20%, rgba(255, 255, 255, 0.08) 0%, transparent 50%),
    radial-gradient(circle at 40% 40%, rgba(255, 255, 255, 0.05) 0%, transparent 50%);
  pointer-events: none;
}

/* Animated Background Elements */
.login-container::after {
  content: '';
  position: absolute;
  width: 200%;
  height: 200%;
  top: -50%;
  left: -50%;
  background: 
    radial-gradient(circle at 25% 25%, rgba(255, 255, 255, 0.03) 0%, transparent 25%),
    radial-gradient(circle at 75% 75%, rgba(255, 255, 255, 0.02) 0%, transparent 25%);
  animation: float 20s ease-in-out infinite;
}

@keyframes float {
  0%, 100% { transform: translate(0, 0) rotate(0deg); }
  33% { transform: translate(30px, -30px) rotate(120deg); }
  66% { transform: translate(-20px, 20px) rotate(240deg); }
}

/* ========================================
   LOGIN CARD - GLASSMORPHISM DESIGN
   ======================================== */

.login-card {
  background: rgba(255, 255, 255, 0.95);
  backdrop-filter: blur(20px);
  -webkit-backdrop-filter: blur(20px);
  border-radius: var(--radius-2xl);
  box-shadow: 
    0 25px 50px -12px rgba(31, 72, 128, 0.25),
    0 0 0 1px rgba(255, 255, 255, 0.2);
  width: 100%;
  max-width: 600px;
  position: relative;
  z-index: 10;
  border: 1px solid rgba(255, 255, 255, 0.3);
  padding: var(--spacing-2xl);
  animation: slideUp 0.8s cubic-bezier(0.4, 0, 0.2, 1);
}

@keyframes slideUp {
  from {
    opacity: 0;
    transform: translateY(40px) scale(0.95);
  }
  to {
    opacity: 1;
    transform: translateY(0) scale(1);
  }
}

/* Card Border Glow */
.login-card::before {
  content: '';
  position: absolute;
  top: 0;
  left: 0;
  right: 0;
  bottom: 0;
  border-radius: var(--radius-2xl);
  padding: 1px;
  background: linear-gradient(135deg, 
    rgba(255, 255, 255, 0.3) 0%, 
    rgba(255, 255, 255, 0.1) 50%, 
    rgba(255, 255, 255, 0.3) 100%);
  mask: linear-gradient(#fff 0 0) content-box, linear-gradient(#fff 0 0);
  mask-composite: exclude;
  -webkit-mask: linear-gradient(#fff 0 0) content-box, linear-gradient(#fff 0 0);
  -webkit-mask-composite: xor;
  pointer-events: none;
}

/* ========================================
   LOGIN HEADER - PROFESSIONAL BRANDING
   ======================================== */

.login-card h2 {
  color: var(--primary);
  font-size: 2.25rem;
  font-weight: 800;
  text-align: center;
  margin-bottom: var(--spacing-sm);
  display: flex;
  align-items: center;
  justify-content: center;
  gap: var(--spacing);
  letter-spacing: -0.025em;
  line-height: 1.1;
}

.login-card h2 i {
  font-size: 2rem;
  color: var(--primary);
  background: linear-gradient(135deg, var(--primary) 0%, var(--primary-light) 100%);
  -webkit-background-clip: text;
  -webkit-text-fill-color: transparent;
  background-clip: text;
}

.login-card p {
  color: var(--gray-500);
  text-align: center;
  margin-bottom: var(--spacing-xl);
  font-size: 1rem;
  font-weight: 500;
  letter-spacing: 0.025em;
}

/* ========================================
   LOGIN FORM - PREMIUM INPUTS
   ======================================== */

.login-form {
  margin-bottom: var(--spacing-xl);
}

.form-group {
  margin-bottom: var(--spacing-lg);
  position: relative;
}

.form-group label {
  display: flex;
  align-items: center;
  gap: var(--spacing-sm);
  font-weight: 600;
  color: var(--gray-700);
  margin-bottom: var(--spacing-sm);
  font-size: 0.9rem;
  letter-spacing: 0.025em;
}

.form-group label i {
  color: var(--primary);
  font-size: 0.9rem;
  width: 18px;
  text-align: center;
  transition: var(--transition);
}

.form-control {
  width: 100%;
  padding: 0.875rem 1rem 0.875rem 3rem;
  border: 2px solid var(--gray-200);
  border-radius: var(--radius-lg);
  font-size: 1rem;
  transition: var(--transition);
  background: var(--white);
  color: var(--gray-900);
  font-weight: 500;
  position: relative;
}

.form-control:focus {
  outline: none;
  border-color: var(--primary);
  box-shadow: 
    0 0 0 3px rgba(31, 72, 128, 0.1),
    0 4px 6px -1px rgba(0, 0, 0, 0.1);
  transform: translateY(-1px);
}

.form-control::placeholder {
  color: var(--gray-400);
  font-weight: 400;
}

/* Input Icon Position */
.form-group {
  position: relative;
}

.form-group i {
  position: absolute;
  left: 1rem;
  top: 50%;
  transform: translateY(-50%);
  color: var(--gray-400);
  font-size: 1rem;
  z-index: 5;
  transition: var(--transition);
}

.form-group:focus-within i {
  color: var(--primary);
}

.form-control {
  padding-left: 3rem;
}

/* ========================================
   LOGIN BUTTON - PREMIUM CTA
   ======================================== */

.btn-primary {
  width: 100%;
  padding: 1rem 1.5rem;
  background: linear-gradient(135deg, var(--primary) 0%, var(--primary-dark) 100%);
  color: white;
  border: none;
  border-radius: var(--radius-lg);
  font-size: 1rem;
  font-weight: 600;
  cursor: pointer;
  transition: var(--transition);
  display: flex;
  align-items: center;
  justify-content: center;
  gap: var(--spacing-sm);
  margin-top: var(--spacing-lg);
  box-shadow: 
    0 10px 15px -3px rgba(31, 72, 128, 0.3),
    0 4px 6px -2px rgba(0, 0, 0, 0.1);
  position: relative;
  overflow: hidden;
}

.btn-primary::before {
  content: '';
  position: absolute;
  top: 0;
  left: -100%;
  width: 100%;
  height: 100%;
  background: linear-gradient(90deg, 
    transparent 0%, 
    rgba(255, 255, 255, 0.2) 50%, 
    transparent 100%);
  transition: left 0.6s ease;
}

.btn-primary:hover {
  transform: translateY(-2px);
  box-shadow: 
    0 20px 25px -5px rgba(31, 72, 128, 0.4),
    0 10px 10px -5px rgba(0, 0, 0, 0.04);
  background: linear-gradient(135deg, var(--primary-light) 0%, var(--primary) 100%);
}

.btn-primary:hover::before {
  left: 100%;
}

.btn-primary:active {
  transform: translateY(0);
  box-shadow: 
    0 10px 15px -3px rgba(31, 72, 128, 0.3),
    0 4px 6px -2px rgba(0, 0, 0, 0.1);
}

.btn-primary i {
  font-size: 1.1rem;
  z-index: 1;
}

/* ========================================
   LOGIN FOOTER - TRUST ELEMENTS
   ======================================== */

.login-footer {
  text-align: center;
  margin-top: var(--spacing-xl);
  padding-top: var(--spacing-lg);
  border-top: 1px solid var(--gray-200);
  color: var(--gray-500);
  font-size: 0.875rem;
}

.login-footer p {
  margin-bottom: var(--spacing-xs);
  display: flex;
  align-items: center;
  justify-content: center;
  gap: var(--spacing-sm);
}

.login-footer i {
  color: var(--primary);
  font-size: 0.8rem;
}

/* ========================================
   FLASH MESSAGES - PREMIUM ALERTS
   ======================================== */

.login-container .alert {
  margin-bottom: var(--spacing-lg);
  border-radius: var(--radius-lg);
  padding: var(--spacing) var(--spacing-lg);
  font-size: 0.9rem;
  border: none;
  animation: slideDown 0.5s cubic-bezier(0.4, 0, 0.2, 1);
  display: flex;
  align-items: center;
  gap: var(--spacing-sm);
  font-weight: 500;
}

@keyframes slideDown {
  from {
    opacity: 0;
    transform: translateY(-20px) scale(0.95);
  }
  to {
    opacity: 1;
    transform: translateY(0) scale(1);
  }
}

.login-container .alert-success {
  background: linear-gradient(135deg, var(--success) 0%, #059669 100%);
  color: white;
  box-shadow: 
    0 10px 15px -3px rgba(16, 185, 129, 0.3),
    0 4px 6px -2px rgba(0, 0, 0, 0.1);
}

.login-container .alert-error {
  background: linear-gradient(135deg, var(--danger) 0%, #b91c1c 100%);
  color: white;
  box-shadow: 
    0 10px 15px -3px rgba(239, 68, 68, 0.3),
    0 4px 6px -2px rgba(0, 0, 0, 0.1);
}

.login-container .alert i {
  font-size: 1.1rem;
  flex-shrink: 0;
}

/* ========================================
   RESPONSIVE DESIGN - MOBILE FIRST
   ======================================== */

/* Tablet */
@media (max-width: 768px) {
  .login-container {
    padding: var(--spacing);
  }
  
  .login-card {
    padding: var(--spacing-xl);
    margin: var(--spacing);
  }
  
  .login-card h2 {
    font-size: 2rem;
  }
  
  .login-card h2 i {
    font-size: 1.8rem;
  }
}

/* Mobile */
@media (max-width: 480px) {
  .login-container {
    padding: var(--spacing-sm);
  }
  
  .login-card {
    padding: var(--spacing-lg);
    margin: var(--spacing-sm);
  }
  
  .login-card h2 {
    font-size: 1.75rem;
    flex-direction: column;
    gap: var(--spacing-sm);
  }
  
  .login-card h2 i {
    font-size: 1.5rem;
  }
  
  .form-control {
    padding: 0.75rem 1rem 0.75rem 2.75rem;
    font-size: 0.95rem;
  }
  
  .form-group i {
    left: 0.875rem;
    font-size: 0.9rem;
  }
  
  .btn-primary {
    padding: 0.875rem 1.25rem;
    font-size: 0.95rem;
  }
  
  .btn-primary i {
    font-size: 1rem;
  }
}

/* Small Mobile */
@media (max-width: 360px) {
  .login-card {
    padding: var(--spacing-md);
  }
  
  .login-card h2 {
    font-size: 1.5rem;
  }
  
  .form-control {
    padding: 0.625rem 0.875rem 0.625rem 2.5rem;
    font-size: 0.9rem;
  }
  
  .btn-primary {
    padding: 0.75rem 1rem;
    font-size: 0.9rem;
  }
}

/* ========================================
   ACCESSIBILITY & INTERACTIONS
   ======================================== */

/* Focus States */
.form-control:focus,
.btn-primary:focus {
  outline: 2px solid var(--primary);
  outline-offset: 2px;
}

/* High Contrast Mode */
@media (prefers-contrast: high) {
  .login-card {
    background: var(--white);
    border: 2px solid var(--gray-900);
  }
  
  .form-control {
    border: 2px solid var(--gray-900);
  }
}

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

/* Dark Mode Support */
@media (prefers-color-scheme: dark) {
  .login-card {
    background: rgba(30, 41, 59, 0.95);
    border-color: rgba(255, 255, 255, 0.1);
  }
  
  .login-card h2 {
    color: var(--primary-light);
  }
  
  .form-control {
    background: rgba(15, 23, 42, 0.8);
    border-color: rgba(255, 255, 255, 0.2);
    color: var(--white);
  }
  
  .form-control::placeholder {
    color: rgba(255, 255, 255, 0.5);
  }
}

/* ========================================
   UTILITY CLASSES
   ======================================== */

.sr-only {
  position: absolute;
  width: 1px;
  height: 1px;
  padding: 0;
  margin: -1px;
  overflow: hidden;
  clip: rect(0, 0, 0, 0);
  white-space: nowrap;
  border: 0;
}

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

.font-semibold {
  font-weight: 600;
}

.text-sm {
  font-size: 0.875rem;
}

/* ========================================
   PRINT STYLES
   ======================================== */

@media print {
  .login-container {
    background: var(--white);
  }
  
  .login-card {
    box-shadow: none;
    border: 1px solid var(--gray-300);
  }
  
  .btn-primary {
    background: var(--gray-900) !important;
  }
}
.fa-solid, .fas {
    margin-top: 15px;
}