/* ===============================
   CESIUM BIM VIEWER - LOGIN STYLES v1.0
   =============================== */

/* Login Screen Overlay */
#loginScreen {
  position: fixed;
  inset: 0;
  background: linear-gradient(135deg, #1a1a2e 0%, #16213e 50%, #0f3460 100%);
  display: flex;
  justify-content: center;
  align-items: center;
  z-index: 100000;
  font-family: -apple-system, BlinkMacSystemFont, 'Segoe UI', Roboto, sans-serif;
}

/* Login Container */
.login-container {
  background: rgba(255, 255, 255, 0.95);
  padding: 40px;
  border-radius: 16px;
  box-shadow: 0 20px 60px rgba(0, 0, 0, 0.4);
  width: 100%;
  max-width: 400px;
  margin: 20px;
  animation: loginFadeIn 0.5s ease-out;
}

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

/* Login Header */
.login-header {
  text-align: center;
  margin-bottom: 32px;
}

.login-icon {
  font-size: 48px;
  display: block;
  margin-bottom: 16px;
  filter: drop-shadow(0 4px 8px rgba(0, 0, 0, 0.2));
}

.login-header h1 {
  margin: 0 0 8px 0;
  color: #1a1a2e;
  font-size: 24px;
  font-weight: 700;
}

.login-header p {
  margin: 0;
  color: #666;
  font-size: 14px;
}

/* Login Form */
.login-form {
  display: flex;
  flex-direction: column;
  gap: 20px;
}

.login-field {
  display: flex;
  flex-direction: column;
  gap: 6px;
}

.login-field label {
  font-size: 14px;
  font-weight: 600;
  color: #333;
}

.login-field input {
  padding: 14px 16px;
  border: 2px solid #e0e0e0;
  border-radius: 8px;
  font-size: 16px;
  transition: all 0.2s ease;
  outline: none;
  background: #fff;
}

.login-field input:focus {
  border-color: #667eea;
  box-shadow: 0 0 0 3px rgba(102, 126, 234, 0.2);
}

.login-field input::placeholder {
  color: #aaa;
}

/* Login Error */
#loginError {
  display: none;
  background: #fff5f5;
  border: 1px solid #fed7d7;
  color: #c53030;
  padding: 12px 16px;
  border-radius: 8px;
  font-size: 14px;
  text-align: center;
  animation: errorShake 0.5s ease;
}

@keyframes errorShake {
  0%, 100% { transform: translateX(0); }
  20%, 60% { transform: translateX(-5px); }
  40%, 80% { transform: translateX(5px); }
}

/* Login Button */
.login-btn {
  background: linear-gradient(135deg, #667eea 0%, #764ba2 100%);
  color: white;
  border: none;
  padding: 16px;
  border-radius: 8px;
  font-size: 16px;
  font-weight: 600;
  cursor: pointer;
  transition: all 0.3s ease;
  display: flex;
  justify-content: center;
  align-items: center;
  gap: 8px;
  box-shadow: 0 4px 12px rgba(102, 126, 234, 0.4);
}

.login-btn:hover:not(:disabled) {
  transform: translateY(-2px);
  box-shadow: 0 6px 20px rgba(102, 126, 234, 0.5);
}

.login-btn:active:not(:disabled) {
  transform: translateY(0);
}

.login-btn:disabled {
  opacity: 0.7;
  cursor: not-allowed;
  transform: none;
}

/* Login Spinner */
#loginSpinner {
  display: none;
  width: 18px;
  height: 18px;
  border: 2px solid rgba(255, 255, 255, 0.3);
  border-top-color: white;
  border-radius: 50%;
  animation: spin 0.8s linear infinite;
}

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

/* Login Footer */
.login-footer {
  text-align: center;
  margin-top: 24px;
  padding-top: 24px;
  border-top: 1px solid #e0e0e0;
}

.login-footer small {
  color: #999;
  font-size: 12px;
}

/* ===============================
   USER BADGE (for toolbar)
   =============================== */

#userBadge {
  display: none;
  align-items: center;
  gap: 8px;
  padding: 8px 12px;
  background: rgba(102, 126, 234, 0.15);
  border-radius: 6px;
  margin-bottom: 12px;
  font-size: 12px;
  color: #a5b4fc;
  border: 1px solid rgba(102, 126, 234, 0.3);
}

#userBadge::before {
  content: '👤';
  font-size: 14px;
}

#userEmail {
  flex: 1;
  overflow: hidden;
  text-overflow: ellipsis;
  white-space: nowrap;
}

/* Logout Button */
#logoutBtn {
  background: rgba(231, 76, 60, 0.15);
  color: #ff6b6b;
  border: 1px solid rgba(231, 76, 60, 0.3);
  padding: 4px 8px;
  border-radius: 4px;
  font-size: 11px;
  cursor: pointer;
  transition: all 0.2s ease;
  font-weight: 600;
}

#logoutBtn:hover {
  background: rgba(231, 76, 60, 0.25);
  border-color: rgba(231, 76, 60, 0.5);
}

/* ===============================
   RESPONSIVE DESIGN
   =============================== */

@media (max-width: 480px) {
  .login-container {
    padding: 24px;
    margin: 16px;
    border-radius: 12px;
  }
  
  .login-header h1 {
    font-size: 20px;
  }
  
  .login-icon {
    font-size: 40px;
  }
  
  .login-field input {
    padding: 12px 14px;
    font-size: 14px;
  }
  
  .login-btn {
    padding: 14px;
    font-size: 15px;
  }
}

/* ===============================
   DARK MODE SUPPORT
   =============================== */

@media (prefers-color-scheme: dark) {
  .login-container {
    background: rgba(26, 32, 44, 0.98);
  }
  
  .login-header h1 {
    color: #e2e8f0;
  }
  
  .login-header p {
    color: #a0aec0;
  }
  
  .login-field label {
    color: #e2e8f0;
  }
  
  .login-field input {
    background: rgba(255, 255, 255, 0.05);
    border-color: rgba(255, 255, 255, 0.2);
    color: #e2e8f0;
  }
  
  .login-field input:focus {
    border-color: #667eea;
  }
  
  .login-footer {
    border-top-color: rgba(255, 255, 255, 0.1);
  }
  
  .login-footer small {
    color: #718096;
  }
  
  #loginError {
    background: rgba(254, 178, 178, 0.1);
    border-color: rgba(254, 178, 178, 0.3);
  }
}