/* Custom Modal Styles - Professional & Clean Design */

/* Modal Overlay */
.custom-modal-overlay {
  position: fixed;
  top: 0;
  left: 0;
  width: 100%;
  height: 100%;
  background: linear-gradient(135deg, rgba(0, 0, 0, 0.4), rgba(0, 0, 0, 0.6));
  backdrop-filter: blur(4px);
  z-index: 9999;
  display: none;
  opacity: 0;
  transition: all 0.4s cubic-bezier(0.4, 0, 0.2, 1);
}

.custom-modal-overlay.show {
  display: flex;
  align-items: center;
  justify-content: center;
  opacity: 1;
}

/* Modal Container */
.custom-modal {
  background: #ffffff;
  border-radius: 16px;
  box-shadow: 0 25px 50px -12px rgba(0, 0, 0, 0.4),
    0 0 0 1px rgba(255, 255, 255, 0.1);
  max-width: 480px;
  width: 90%;
  max-height: 90vh;
  overflow: hidden;
  position: relative;
  transform: scale(0.8) translateY(20px);
  transition: all 0.4s cubic-bezier(0.4, 0, 0.2, 1);
}

.custom-modal-overlay.show .custom-modal {
  transform: scale(1) translateY(0);
}

/* Modal Header */
.custom-modal-header {
  padding: 16px 32px;
  background: linear-gradient(135deg, #667eea 0%, #764ba2 100%);
  color: white;
  display: flex;
  justify-content: space-between;
  align-items: center;
  position: relative;
}

.custom-modal-header::before {
  content: "";
  position: absolute;
  bottom: 0;
  left: 0;
  right: 0;
  height: 1px;
  background: linear-gradient(
    90deg,
    transparent,
    rgba(255, 255, 255, 0.3),
    transparent
  );
}

.custom-modal-title {
  margin: 0;
  font-size: 1.3em;
  font-weight: 600;
  color: white;
  text-shadow: 0 1px 2px rgba(0, 0, 0, 0.1);
  letter-spacing: -0.025em;
}

.custom-modal-close {
  background: rgba(255, 255, 255, 0.15);
  border: none;
  cursor: pointer;
  color: white;
  padding: 0;
  width: 36px;
  height: 36px;
  display: flex;
  align-items: center;
  justify-content: center;
  border-radius: 8px;
  transition: all 0.2s ease;
  backdrop-filter: blur(10px);
  margin: 0;
}

.custom-modal-close:hover {
  background: rgba(255, 255, 255, 0.25);
  transform: scale(1.05);
}

/* Modal Body */
.custom-modal-body {
  padding: 16px 32px 1px;
  background: #fafbfc;
}

/* Form Groups */
.custom-form-group {
  margin-bottom: 12px;
}

.custom-form-group label {
  display: block;
  margin-bottom: 10px;
  font-weight: 600;
  color: #374151;
  font-size: 1em;
  letter-spacing: -0.025em;
}

/* Input Groups */
.custom-input-group {
  position: relative;
  display: flex;
}

.custom-input-group input {
  flex: 1;
  padding: 14px 18px;
  border: 2px solid #e5e7eb;
  border-radius: 12px;
  font-size: 15px;
  font-weight: 400;
  color: #374151;
  background: white;
  transition: all 0.3s cubic-bezier(0.4, 0, 0.2, 1);
  outline: none;
  box-shadow: 0 1px 3px 0 rgba(0, 0, 0, 0.1);
}

.custom-input-group input::placeholder {
  color: #9ca3af;
  font-weight: 400;
}

.custom-input-group input:focus {
  border-color: #667eea;
  box-shadow: 0 0 0 4px rgba(102, 126, 234, 0.1),
    0 4px 6px -1px rgba(0, 0, 0, 0.1);
  transform: translateY(-1px);
}

.custom-input-group input.error {
  border-color: #f87171;
  background: #fef2f2;
}

.custom-input-group input.error:focus {
  box-shadow: 0 0 0 4px rgba(248, 113, 113, 0.1),
    0 4px 6px -1px rgba(0, 0, 0, 0.1);
}

/* Password Toggle Button */
.custom-password-toggle {
  position: absolute;
  right: 4px;
  top: 36%;
  transform: translateY(-50%);
  height: 36px;
  width: 36px;
  padding: 0;
  background: rgba(107, 114, 128, 0.1);
  border: none;
  cursor: pointer;
  color: #6b7280;
  font-size: 16px;
  display: flex;
  align-items: center;
  justify-content: center;
  border-radius: 8px;
  transition: all 0.2s ease;
}

.custom-password-toggle:hover {
  background: rgba(107, 114, 128, 0.2);
  color: #374151;
  transform: translateY(-50%) scale(1.05);
}

/* Error Messages */
.custom-error-message {
  color: #ef4444;
  font-size: 13px;
  font-weight: 500;
  margin-top: 8px;
  display: none;
  padding: 8px 12px;
  background: #fef2f2;
  border: 1px solid #fecaca;
  border-radius: 8px;
  position: relative;
}

.custom-error-message::before {
  content: "⚠";
  margin-right: 6px;
  font-size: 14px;
}

.custom-error-message.show {
  display: block;
  animation: slideDown 0.3s ease;
}

@keyframes slideDown {
  from {
    opacity: 0;
    transform: translateY(-10px);
  }
  to {
    opacity: 1;
    transform: translateY(0);
  }
}

/* Modal Footer */
.custom-modal-footer {
  padding: 12px 32px 12px 32px;
  background: white;
  border-top: 1px solid #f3f4f6;
  display: flex;
  justify-content: flex-end;
  gap: 12px;
}

/* Buttons */
.custom-btn {
  padding: 12px 24px;
  border: none;
  border-radius: 10px;
  font-size: 14px;
  font-weight: 600;
  cursor: pointer;
  transition: all 0.3s cubic-bezier(0.4, 0, 0.2, 1);
  text-decoration: none;
  display: inline-flex;
  align-items: center;
  justify-content: center;
  text-align: center;
  line-height: 1.4;
  min-width: 100px;
  position: relative;
  overflow: hidden;
  margin: 4px 0px;
}

.custom-btn::before {
  content: "";
  position: absolute;
  top: 0;
  left: -100%;
  width: 100%;
  height: 100%;
  background: linear-gradient(
    90deg,
    transparent,
    rgba(255, 255, 255, 0.2),
    transparent
  );
  transition: left 0.5s;
}

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

.custom-btn:disabled {
  opacity: 0.5;
  cursor: not-allowed;
  transform: none !important;
}

.custom-btn:disabled::before {
  display: none;
}

.custom-btn-secondary {
  background: linear-gradient(135deg, #6b7280 0%, #4b5563 100%);
  color: white;
  box-shadow: 0 4px 14px 0 rgba(107, 114, 128, 0.3);
}

.custom-btn-secondary:hover:not(:disabled) {
  background: linear-gradient(135deg, #4b5563 0%, #374151 100%);
  box-shadow: 0 6px 20px 0 rgba(107, 114, 128, 0.4);
  transform: translateY(-2px);
}

.custom-btn-primary {
  background: linear-gradient(135deg, #667eea 0%, #764ba2 100%);
  color: white;
  box-shadow: 0 4px 14px 0 rgba(102, 126, 234, 0.3);
}

.custom-btn-primary:hover:not(:disabled) {
  background: linear-gradient(135deg, #5a67d8 0%, #6b46c1 100%);
  box-shadow: 0 6px 20px 0 rgba(102, 126, 234, 0.4);
  transform: translateY(-2px);
}

/* Loading State */
.custom-btn.loading {
  position: relative;
  color: transparent;
}

.custom-btn.loading::before {
  display: none;
}

.custom-btn.loading::after {
  content: "";
  position: absolute;
  top: 50%;
  left: 50%;
  width: 18px;
  height: 18px;
  margin: -9px 0 0 -9px;
  border: 2px solid transparent;
  border-top-color: currentColor;
  border-radius: 50%;
  animation: spin 1s linear infinite;
}

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

/* Additional Form Effects */
.custom-form-group {
  position: relative;
}

.custom-form-group::before {
  content: "";
  position: absolute;
  left: 0;
  bottom: 0;
  width: 0;
  height: 2px;
  background: linear-gradient(135deg, #667eea 0%, #764ba2 100%);
  transition: width 0.3s ease;
  z-index: 1;
}

.custom-form-group:focus-within::before {
  width: 100%;
}

/* Input Icons */
.custom-input-group.with-icon {
  position: relative;
}

.custom-input-group.with-icon::before {
  content: attr(data-icon);
  position: absolute;
  left: 18px;
  top: 50%;
  transform: translateY(-50%);
  font-family: "Font Awesome 5 Free";
  font-weight: 900;
  color: #9ca3af;
  z-index: 2;
  transition: color 0.3s ease;
}

.custom-input-group.with-icon input {
  padding-left: 50px;
}

.custom-input-group.with-icon:focus-within::before {
  color: #667eea;
}

/* Responsive Design */
@media (max-width: 768px) {
  .custom-modal {
    width: 95%;
    margin: 10px;
    border-radius: 20px 20px 0 0;
    transform: translateY(100%);
  }

  .custom-modal-overlay.show .custom-modal {
    transform: translateY(0);
  }

  .custom-modal-header {
    padding: 24px 20px 16px 20px;
    border-radius: 20px 20px 0 0;
  }

  .custom-modal-body {
    padding: 12px 10px 1px;
  }

  .custom-modal-footer {
    padding: 10px 20px 10px 20px;
    flex-direction: column;
    gap: 10px;
  }

  .custom-btn {
    width: 100%;
    order: -1;
  }

  .custom-btn-secondary {
    order: 1;
  }

  #submitStudentLogin {
    margin-bottom: 0px;
  }
}

@media (max-width: 480px) {
  .custom-modal {
    width: 100%;
    height: 100vh;
    border-radius: 0;
    max-height: 100vh;
  }

  .custom-modal-overlay.show .custom-modal {
    transform: translateX(0);
  }
}

/* Focus trap for accessibility */
.custom-modal-overlay {
  outline: none;
}

/* High contrast mode support */
@media (prefers-contrast: high) {
  .custom-modal {
    border: 2px solid #000;
  }

  .custom-input-group input {
    border: 2px solid #000;
  }
}

/* Success State */
.custom-input-group input.success {
  border-color: #10b981;
  background: #f0fdf4;
}

.custom-input-group input.success:focus {
  box-shadow: 0 0 0 4px rgba(16, 185, 129, 0.1),
    0 4px 6px -1px rgba(0, 0, 0, 0.1);
}

/* Modal Entrance Effects */
@keyframes modalEntrance {
  0% {
    opacity: 0;
    transform: scale(0.7) translateY(50px) rotateX(10deg);
  }
  100% {
    opacity: 1;
    transform: scale(1) translateY(0) rotateX(0deg);
  }
}

.custom-modal-overlay.show .custom-modal {
  animation: modalEntrance 0.5s cubic-bezier(0.34, 1.56, 0.64, 1);
}

/* Dark Mode Support */
@media (prefers-color-scheme: dark) {
  .custom-modal {
    background: #1f2937;
    color: #f9fafb;
  }

  .custom-modal-body {
    background: #111827;
  }

  .custom-modal-footer {
    background: #1f2937;
    border-top-color: #374151;
  }

  .custom-input-group input {
    background: #374151;
    border-color: #4b5563;
    color: #f9fafb;
  }

  .custom-input-group input::placeholder {
    color: #9ca3af;
  }

  .custom-input-group input:focus {
    border-color: #667eea;
    background: #1f2937;
  }

  .custom-form-group label {
    color: #f9fafb;
  }
}

/* Accessibility Enhancements */
.custom-modal:focus {
  outline: 2px solid #667eea;
  outline-offset: 2px;
}

.custom-btn:focus {
  outline: 2px solid #667eea;
  outline-offset: 2px;
}

.custom-input-group input:focus {
  outline: none;
}

/* Reduced motion support */
@media (prefers-reduced-motion: reduce) {
  .custom-modal-overlay,
  .custom-modal,
  .custom-btn {
    transition: none;
  }

  .custom-btn.loading::after {
    animation: none;
  }

  .custom-modal-overlay.show .custom-modal {
    animation: none;
  }
}

/* Print Styles */
@media print {
  .custom-modal-overlay {
    display: none !important;
  }
}