/*
 * Registration Modal Section
 * Modern modal interface for tournament registration
 * 
 * @package CMSMGA
 * @version 5.0
 */

/* ===== REGISTRATION MODAL ===== */
.registration-modal {
  position: fixed;
  top: 0;
  left: 0;
  width: 100%;
  height: 100%;
  z-index: 9999;
  display: none;
  opacity: 0;
  transition: opacity 0.3s ease;
}

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

/* ===== OVERLAY ===== */
.registration-modal-overlay {
  position: absolute;
  top: 0;
  left: 0;
  width: 100%;
  height: 100%;
  background: rgba(0, 0, 0, 0.6);
  backdrop-filter: blur(8px);
  z-index: 1;
}

/* ===== MODAL CONTAINER ===== */
.registration-modal-container {
  position: relative;
  z-index: 2;
  width: 100%;
  max-width: 600px;
  margin: 2rem;
  max-height: calc(100vh - 4rem);
  overflow-y: auto;
}

/* ===== MODAL CONTENT ===== */
.registration-modal-content {
  background: var(--bg-surface);
  border-radius: 20px;
  box-shadow: 0 20px 60px rgba(0, 0, 0, 0.3);
  border: 1px solid var(--border-primary);
  overflow: hidden;
  animation: modalSlideIn 0.3s ease-out;
}

@keyframes modalSlideIn {
  from {
    opacity: 0;
    transform: translateY(-50px) scale(0.95);
  }
  to {
    opacity: 1;
    transform: translateY(0) scale(1);
  }
}

/* ===== MODAL HEADER ===== */
.registration-modal-header {
  display: flex;
  justify-content: space-between;
  align-items: flex-start;
  padding: 2rem 2rem 1rem;
  border-bottom: 1px solid var(--border-secondary);
  background: linear-gradient(135deg, var(--bg-primary-transparent-10), var(--bg-primary-transparent-5));
}

.registration-modal-title-wrapper {
  flex: 1;
}

.registration-modal-title {
  font-size: var(--text-2xl);
  font-weight: 700;
  color: var(--text-primary);
  margin-bottom: 0.5rem;
  background: linear-gradient(135deg, var(--color-primary-700), var(--color-primary-600));
  -webkit-background-clip: text;
  -webkit-text-fill-color: transparent;
  background-clip: text;
}

.registration-modal-subtitle {
  font-size: var(--text-base);
  color: var(--text-secondary);
  line-height: 1.5;
}

.registration-modal-close {
  background: var(--bg-primary-transparent-10);
  border: 2px solid var(--border-primary);
  border-radius: 12px;
  width: 40px;
  height: 40px;
  display: flex;
  align-items: center;
  justify-content: center;
  cursor: pointer;
  transition: all 0.3s ease;
  margin-left: 1rem;
  flex-shrink: 0;
}

.registration-modal-close:hover {
  background: var(--color-error-100);
  border-color: var(--color-error-300);
  transform: scale(1.1);
}

.registration-modal-close-icon {
  font-size: 1.5rem;
  font-weight: 700;
  color: var(--text-secondary);
  line-height: 1;
}

.registration-modal-close:hover .registration-modal-close-icon {
  color: var(--color-error-700);
}

/* ===== MODAL BODY ===== */
.registration-modal-body {
  padding: 2rem;
}

/* ===== FORM STYLES ===== */
.registration-modal-form {
  display: flex;
  flex-direction: column;
  gap: 2rem;
}

.registration-form-section {
  display: flex;
  flex-direction: column;
  gap: 1.5rem;
}

.registration-form-section-title {
  font-size: var(--text-lg);
  font-weight: 600;
  color: var(--text-primary);
  margin-bottom: 0.5rem;
  padding-bottom: 0.5rem;
  border-bottom: 2px solid var(--border-secondary);
  position: relative;
}

.registration-form-section-title::after {
  content: '';
  position: absolute;
  bottom: -2px;
  left: 0;
  width: 3rem;
  height: 2px;
  background: linear-gradient(90deg, var(--color-primary-600), var(--color-accent-500));
  border-radius: 1px;
}

.registration-form-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(250px, 1fr));
  gap: 1.5rem;
}

.registration-form-group {
  display: flex;
  flex-direction: column;
  gap: 0.5rem;
}

.registration-form-label {
  font-size: var(--text-sm);
  font-weight: 600;
  color: var(--text-primary);
  text-transform: uppercase;
  letter-spacing: 0.05em;
}

.registration-form-required {
  color: var(--color-error-600);
  font-weight: 700;
}

.registration-form-input,
.registration-form-textarea {
  padding: 1rem 1.25rem;
  border: 2px solid var(--border-primary);
  border-radius: 12px;
  background: var(--bg-surface);
  color: var(--text-primary);
  font-size: var(--text-base);
  font-weight: 500;
  transition: all 0.3s ease;
  font-family: inherit;
}

.registration-form-input::placeholder,
.registration-form-textarea::placeholder {
  color: var(--text-muted);
}

.registration-form-input:hover,
.registration-form-textarea:hover {
  border-color: var(--color-primary-400);
  box-shadow: 0 4px 12px rgba(0, 0, 0, 0.1);
}

.registration-form-input:focus,
.registration-form-textarea:focus {
  outline: none;
  border-color: var(--color-primary-600);
  box-shadow: 0 0 0 3px var(--bg-primary-transparent-20);
}

.registration-form-textarea {
  resize: vertical;
  min-height: 100px;
}

/* ===== MODAL ACTIONS ===== */
.registration-modal-actions {
  display: flex;
  gap: 1rem;
  justify-content: flex-end;
  padding-top: 1rem;
  border-top: 1px solid var(--border-secondary);
  flex-wrap: wrap;
}

.registration-modal-actions .modern-btn-primary {
  flex: 1;
  max-width: 200px;
}

.registration-modal-actions .modern-btn-secondary {
  flex: 1;
  max-width: 150px;
}

/* ===== RESPONSIVE DESIGN ===== */
@media (max-width: 768px) {
  .registration-modal-container {
    margin: 1rem;
    max-height: calc(100vh - 2rem);
  }
  
  .registration-modal-header {
    padding: 1.5rem 1.5rem 1rem;
  }
  
  .registration-modal-body {
    padding: 1.5rem;
  }
  
  .registration-form-grid {
    grid-template-columns: 1fr;
    gap: 1rem;
  }
  
  .registration-modal-actions {
    flex-direction: column;
  }
  
  .registration-modal-actions .modern-btn-primary,
  .registration-modal-actions .modern-btn-secondary {
    max-width: none;
  }
  
  .registration-modal-title {
    font-size: var(--text-xl);
  }
  
  .registration-modal-subtitle {
    font-size: var(--text-sm);
  }
}

@media (max-width: 480px) {
  .registration-modal-container {
    margin: 0.5rem;
    max-height: calc(100vh - 1rem);
  }
  
  .registration-modal-header {
    padding: 1rem 1rem 0.75rem;
  }
  
  .registration-modal-body {
    padding: 1rem;
  }
  
  .registration-modal-title {
    font-size: var(--text-lg);
  }
  
  .registration-form-section-title {
    font-size: var(--text-base);
  }
}

/* ===== ANIMATIONS ===== */
.registration-modal.show .registration-modal-content {
  animation: modalSlideIn 0.3s ease-out;
}

.registration-modal.hide .registration-modal-content {
  animation: modalSlideOut 0.3s ease-in;
}

@keyframes modalSlideOut {
  from {
    opacity: 1;
    transform: translateY(0) scale(1);
  }
  to {
    opacity: 0;
    transform: translateY(-50px) scale(0.95);
  }
}

/* ===== ACCESSIBILITY ===== */
.registration-modal-close:focus-visible,
.registration-form-input:focus-visible,
.registration-form-textarea:focus-visible {
  outline: 2px solid var(--color-accent-500);
  outline-offset: 2px;
}

.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;
}

/* ===== DARK MODE SUPPORT ===== */
@media (prefers-color-scheme: dark) {
  .registration-modal-content {
    background: var(--bg-primary-transparent-10);
    border-color: var(--border-accent);
  }
  
  .registration-modal-header {
    background: var(--bg-primary-transparent-20);
    border-color: var(--border-accent);
  }
  
  .registration-form-input,
  .registration-form-textarea {
    background: var(--bg-primary-transparent-20);
    border-color: var(--border-accent);
  }
  
  .registration-modal-close {
    background: var(--bg-primary-transparent-30);
    border-color: var(--border-accent);
  }
}

/* ===== FORM VALIDATION STYLES ===== */
.registration-form-input:invalid,
.registration-form-textarea:invalid {
  border-color: var(--color-error-400);
}

.registration-form-input:valid,
.registration-form-textarea:valid {
  border-color: var(--color-success-400);
}

/* ===== LOADING STATE ===== */
.registration-modal.loading .registration-modal-content {
  pointer-events: none;
  opacity: 0.7;
}

.registration-modal.loading::after {
  content: '';
  position: absolute;
  top: 50%;
  left: 50%;
  transform: translate(-50%, -50%);
  width: 40px;
  height: 40px;
  border: 3px solid var(--border-primary);
  border-top: 3px solid var(--color-primary-600);
  border-radius: 50%;
  animation: spin 1s linear infinite;
  z-index: 3;
}

@keyframes spin {
  0% { transform: translate(-50%, -50%) rotate(0deg); }
  100% { transform: translate(-50%, -50%) rotate(360deg); }
}