/* ============================================
   CSS Moderne pour Page Login CAS CoLibris
   ============================================ */

:root {
  --primary-green: #7AB51D;
  --primary-orange: #F39C12;
  --dark-green: #5a8a15;
  --light-green: #e8f5d7;
  --dark-blue: #2C3E50;
  --light-blue: #3498DB;
  --text-dark: #2c3e50;
  --text-light: #7f8c8d;
  --white: #ffffff;
  --shadow-sm: 0 2px 8px rgba(0, 0, 0, 0.08);
  --shadow-md: 0 4px 20px rgba(0, 0, 0, 0.12);
  --shadow-lg: 0 8px 32px rgba(0, 0, 0, 0.16);
  --radius: 12px;
  --transition: all 0.3s cubic-bezier(0.4, 0, 0.2, 1);
}

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

body {
  font-family: 'Segoe UI', Tahoma, Geneva, Verdana, sans-serif;
  background: linear-gradient(135deg, #667eea 0%, #764ba2 100%);
  min-height: 100vh;
  display: flex;
  flex-direction: column;
  position: relative;
  overflow-x: hidden;
}

/* Alternative : Fond avec la couleur CoLibris */
.coLibris-cas-login {
  background: linear-gradient(135deg, var(--primary-green) 0%, var(--dark-green) 50%, var(--light-blue) 100%);
}

/* Effet de particules en arrière-plan */
body::before {
  content: '';
  position: absolute;
  top: 0;
  left: 0;
  right: 0;
  bottom: 0;
  background-image:
    radial-gradient(circle at 20% 50%, rgba(255, 255, 255, 0.1) 0%, transparent 50%),
    radial-gradient(circle at 80% 80%, rgba(255, 255, 255, 0.1) 0%, transparent 50%),
    radial-gradient(circle at 40% 20%, rgba(255, 255, 255, 0.08) 0%, transparent 50%);
  pointer-events: none;
  animation: float 20s ease-in-out infinite;
}

@keyframes float {
  0%, 100% { transform: translateY(0); }
  50% { transform: translateY(-20px); }
}

/* Container principal */
.login-container {
  flex: 1;
  display: flex;
  align-items: center;
  justify-content: center;
  padding: 2rem;
  position: relative;
  z-index: 1;
}

/* Logo et en-tête */
.login-header {
  text-align: center;
  margin-bottom: 2rem;
  animation: fadeInDown 0.6s ease-out;
}

.logo {
  width: 280px;
  max-width: 100%;
  height: auto;
  margin-bottom: 1rem;
  filter: drop-shadow(0 4px 12px rgba(0, 0, 0, 0.15));
}

.login-title {
  color: var(--white);
  font-size: 1.5rem;
  font-weight: 300;
  letter-spacing: 0.5px;
  text-shadow: 0 2px 8px rgba(0, 0, 0, 0.2);
}

/* Carte de formulaire */
.login-card {
  background: var(--white);
  border-radius: var(--radius);
  box-shadow: var(--shadow-lg);
  padding: 3rem 2.5rem;
  width: 100%;
  max-width: 540px;
  position: relative;
  animation: fadeInUp 0.6s ease-out 0.2s both;
  backdrop-filter: blur(10px);
  border: 1px solid rgba(255, 255, 255, 0.2);
}

.login-card::before {
  content: '';
  position: absolute;
  top: 0;
  left: 0;
  right: 0;
  height: 4px;
  background: linear-gradient(90deg, var(--primary-green) 0%, var(--primary-orange) 100%);
  border-radius: var(--radius) var(--radius) 0 0;
}

/* Formulaire */
.login-form {
  display: flex;
  flex-direction: column;
  gap: 1.5rem;
}

.form-group {
  position: relative;
}

.form-label {
  display: block;
  font-size: 0.875rem;
  font-weight: 600;
  color: var(--text-dark);
  margin-bottom: 0.5rem;
  transition: var(--transition);
}

.form-label .required {
  color: #e74c3c;
  margin-left: 2px;
}

.form-input {
  width: 100%;
  padding: 0.875rem 1rem;
  padding-right: 3rem;
  border: 2px solid #e0e6ed;
  border-radius: 8px;
  font-size: 1rem;
  color: var(--text-dark);
  background: #f8f9fa;
  transition: var(--transition);
  outline: none;
}

.form-input:focus {
  border-color: var(--primary-green);
  background: var(--white);
  box-shadow: 0 0 0 4px rgba(122, 181, 29, 0.1);
}

.form-input::placeholder {
  color: #a0aec0;
  font-weight: 300;
}

/* Icône de toggle password */
.password-toggle {
  position: absolute;
  right: 1rem;
  top: 2.5rem;
  cursor: pointer;
  color: var(--text-light);
  transition: var(--transition);
  background: none;
  border: none;
  padding: 0.25rem;
}

.password-toggle:hover {
  color: var(--primary-green);
}

/* Bouton de connexion */
.btn-login {
  width: 100%;
  padding: 1rem;
  background: linear-gradient(135deg, var(--primary-green) 0%, var(--dark-green) 100%);
  color: var(--white);
  border: none;
  border-radius: 8px;
  font-size: 1rem;
  font-weight: 600;
  cursor: pointer;
  transition: var(--transition);
  box-shadow: 0 4px 12px rgba(122, 181, 29, 0.3);
  text-transform: uppercase;
  letter-spacing: 0.5px;
  margin-top: 0.5rem;
}

.btn-login:hover {
  transform: translateY(-2px);
  box-shadow: 0 6px 20px rgba(122, 181, 29, 0.4);
  background: linear-gradient(135deg, var(--dark-green) 0%, var(--primary-green) 100%);
}

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

/* Message d'information */
.auth-info {
  background: linear-gradient(135deg, #e8f5d7 0%, #f0f9e8 100%);
  border-left: 4px solid var(--primary-green);
  padding: 1rem;
  border-radius: 8px;
  margin-top: 1.5rem;
  animation: fadeIn 0.6s ease-out 0.4s both;
}

.auth-info-text {
  font-size: 0.875rem;
  color: var(--text-dark);
  line-height: 1.6;
  margin-bottom: 0.5rem;
}

.auth-info-link {
  color: var(--primary-green);
  text-decoration: none;
  font-weight: 600;
  word-break: break-all;
  transition: var(--transition);
}

.auth-info-link:hover {
  color: var(--dark-green);
  text-decoration: underline;
}

/* Footer avec informations bibliothèque */
.login-footer {
  background: rgba(44, 62, 80, 0.95);
  backdrop-filter: blur(10px);
  padding: 2rem 1rem;
  margin-top: auto;
  position: relative;
  z-index: 1;
}

.footer-content {
  max-width: 1200px;
  margin: 0 auto;
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(280px, 1fr));
  gap: 2rem;
  text-align: center;
}

.footer-section {
  animation: fadeIn 0.6s ease-out 0.6s both;
}

.footer-title {
  color: var(--white);
  font-size: 1.125rem;
  font-weight: 600;
  margin-bottom: 0.75rem;
  display: flex;
  align-items: center;
  justify-content: center;
  gap: 0.5rem;
}

.footer-title::before {
  content: '📚';
  font-size: 1.25rem;
}

.footer-text {
  color: rgba(255, 255, 255, 0.8);
  font-size: 0.875rem;
  line-height: 1.6;
  margin: 0.25rem 0;
}

.footer-link {
  color: var(--primary-orange);
  text-decoration: none;
  transition: var(--transition);
}

.footer-link:hover {
  color: #fff;
  text-decoration: underline;
}

/* Animations */
@keyframes fadeInDown {
  from {
    opacity: 0;
    transform: translateY(-20px);
  }
  to {
    opacity: 1;
    transform: translateY(0);
  }
}

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

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

/* États de validation */
.form-input.error {
  border-color: #e74c3c;
  animation: shake 0.4s ease-in-out;
}

.form-input.success {
  border-color: #2ecc71;
}

@keyframes shake {
  0%, 100% { transform: translateX(0); }
  25% { transform: translateX(-8px); }
  75% { transform: translateX(8px); }
}

.error-message {
  color: #e74c3c;
  font-size: 0.8rem;
  margin-top: 0.25rem;
  display: flex;
  align-items: center;
  gap: 0.25rem;
}

.error-message::before {
  content: '⚠️';
}

/* Loading state */
.btn-login.loading {
  position: relative;
  color: transparent;
  pointer-events: none;
}

.btn-login.loading::after {
  content: '';
  position: absolute;
  width: 20px;
  height: 20px;
  top: 50%;
  left: 50%;
  margin-left: -10px;
  margin-top: -10px;
  border: 3px solid rgba(255, 255, 255, 0.3);
  border-top-color: var(--white);
  border-radius: 50%;
  animation: spin 0.8s linear infinite;
}

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

/* Responsive */
@media (max-width: 768px) {
  .login-container {
    padding: 1rem;
  }

  .login-card {
    padding: 2rem 1.5rem;
  }

  .login-title {
    font-size: 1.25rem;
  }

  .footer-content {
    grid-template-columns: 1fr;
    gap: 1.5rem;
  }
}

@media (max-width: 480px) {
  .login-card {
    padding: 1.5rem 1rem;
  }

  .logo {
    width: 220px;
  }

  .form-input {
    font-size: 0.9375rem;
  }
}

/* Mode sombre (optionnel) */
@media (prefers-color-scheme: dark) {
  body {
    background: linear-gradient(135deg, #1a1a2e 0%, #16213e 100%);
  }

  .login-card {
    background: rgba(30, 30, 46, 0.95);
    border: 1px solid rgba(255, 255, 255, 0.1);
  }

  .form-label {
    color: rgba(255, 255, 255, 0.9);
  }

  .form-input {
    background: rgba(255, 255, 255, 0.05);
    border-color: rgba(255, 255, 255, 0.1);
    color: rgba(255, 255, 255, 0.9);
  }

  .form-input:focus {
    background: rgba(255, 255, 255, 0.08);
  }

  .auth-info {
    background: rgba(122, 181, 29, 0.1);
  }

  .auth-info-text {
    color: rgba(255, 255, 255, 0.8);
  }
}

/* Accessibilité */
.form-input:focus-visible {
  outline: 3px solid var(--primary-orange);
  outline-offset: 2px;
}

.btn-login:focus-visible {
  outline: 3px solid var(--white);
  outline-offset: 2px;
}

/* Skip to content pour accessibilité */
.skip-to-content {
  position: absolute;
  left: -9999px;
  z-index: 999;
  padding: 1rem;
  background: var(--primary-green);
  color: white;
  text-decoration: none;
  border-radius: 0 0 8px 0;
}

.skip-to-content:focus {
  left: 0;
  top: 0;
}