/**
 * Contact Page Styles
 * Requirements: 8.1, 8.2, 8.3, 8.4, 8.5, 8.6
 * - Display general contact information
 * - Form validation with inline errors
 * - Success confirmation on submit
 * - Office selection with contact info update
 * - WeChat QR codes
 */

/* ============================================
   Contact Hero Section
   ============================================ */
.contact-hero {
  position: relative;
  min-height: 60vh;
  display: flex;
  align-items: center;
  justify-content: center;
  text-align: center;
  overflow: hidden;
  padding-top: 100px;
}

.contact-hero-container {
  position: relative;
  z-index: 2;
  padding: var(--space-10) var(--section-padding-x);
}

.contact-hero .page-label {
  font-family: var(--font-body);
  font-size: var(--text-sm);
  color: var(--color-accent);
  text-transform: uppercase;
  letter-spacing: var(--tracking-wider);
  margin-bottom: var(--space-3);
  animation: fadeInUp 0.8s var(--ease-out) 0.1s backwards;
}

.contact-hero .page-title {
  font-family: var(--font-display);
  font-size: var(--text-5xl);
  color: var(--text-inverse);
  margin-bottom: var(--space-4);
  animation: fadeInUp 0.8s var(--ease-out) 0.2s backwards;
}

.contact-hero .page-desc {
  font-size: var(--text-xl);
  color: rgba(255, 255, 255, 0.8);
  max-width: 600px;
  margin: 0 auto;
  animation: fadeInUp 0.8s var(--ease-out) 0.3s backwards;
}

.contact-hero-image {
  position: absolute;
  inset: 0;
  z-index: 0;
}

.contact-hero-image img {
  width: 100%;
  height: 100%;
  object-fit: cover;
}

.contact-hero .hero-overlay {
  position: absolute;
  inset: 0;
  background: linear-gradient(
    to bottom,
    rgba(13, 27, 42, 0.7) 0%,
    rgba(13, 27, 42, 0.85) 100%
  );
}

/* ============================================
   Container
   ============================================ */
.contact-container {
  max-width: var(--container-max);
  margin: 0 auto;
  padding: 0 var(--section-padding-x);
}

/* ============================================
   Contact Main Section
   ============================================ */
.contact-main-section {
  background: var(--bg-secondary);
  padding: var(--section-padding-y) 0;
}

.contact-grid {
  display: grid;
  grid-template-columns: 1fr 1.2fr;
  gap: var(--space-10);
  align-items: start;
}

/* ============================================
   Contact Info Panel
   ============================================ */
.contact-info-panel {
  background: var(--bg-primary);
  border-radius: var(--radius-lg);
  padding: var(--space-8);
  box-shadow: var(--shadow-lg);
}

.contact-info-header {
  margin-bottom: var(--space-6);
  padding-bottom: var(--space-6);
  border-bottom: 1px solid var(--color-light-gray);
}

.contact-info-header .section-label {
  font-family: var(--font-body);
  font-size: var(--text-sm);
  color: var(--color-accent);
  text-transform: uppercase;
  letter-spacing: var(--tracking-wider);
  margin-bottom: var(--space-2);
}

.contact-info-header .section-title {
  font-family: var(--font-display);
  font-size: var(--text-2xl);
  color: var(--text-primary);
  margin-bottom: var(--space-3);
}

.contact-info-header .section-desc {
  font-size: var(--text-base);
  color: var(--text-muted);
}

/* Office Selector */
.office-selector {
  margin-bottom: var(--space-6);
}

.office-selector-label {
  display: block;
  font-size: var(--text-sm);
  font-weight: 600;
  color: var(--text-secondary);
  text-transform: uppercase;
  letter-spacing: var(--tracking-wide);
  margin-bottom: var(--space-2);
}

.office-select-wrapper {
  position: relative;
}

.office-select {
  width: 100%;
  padding: var(--space-3) var(--space-10) var(--space-3) var(--space-4);
  font-size: var(--text-base);
  font-family: var(--font-body);
  color: var(--text-primary);
  background: var(--bg-secondary);
  border: 2px solid var(--color-light-gray);
  border-radius: var(--radius-md);
  cursor: pointer;
  appearance: none;
  transition: all var(--duration-fast) var(--ease-out);
}

.office-select:hover {
  border-color: var(--color-medium-gray);
}

.office-select:focus {
  outline: none;
  border-color: var(--color-accent);
  box-shadow: 0 0 0 3px rgba(201, 162, 39, 0.2);
}

.office-select-icon {
  position: absolute;
  right: var(--space-4);
  top: 50%;
  transform: translateY(-50%);
  color: var(--text-muted);
  pointer-events: none;
}

/* Contact Details */
.contact-details {
  display: flex;
  flex-direction: column;
  gap: var(--space-5);
}

.contact-detail-item {
  display: flex;
  align-items: flex-start;
  gap: var(--space-4);
}

.contact-detail-icon {
  width: 48px;
  height: 48px;
  display: flex;
  align-items: center;
  justify-content: center;
  background: linear-gradient(135deg, var(--color-primary), var(--color-secondary));
  border-radius: var(--radius-md);
  flex-shrink: 0;
}

.contact-detail-icon i {
  color: var(--color-accent);
  font-size: var(--text-lg);
}

.contact-detail-content h4 {
  font-family: var(--font-body);
  font-size: var(--text-sm);
  font-weight: 600;
  color: var(--text-muted);
  text-transform: uppercase;
  letter-spacing: var(--tracking-wide);
  margin-bottom: var(--space-1);
}

.contact-detail-content p,
.contact-detail-content a {
  font-size: var(--text-base);
  color: var(--text-primary);
  line-height: var(--leading-normal);
}

.contact-detail-content a {
  text-decoration: none;
  transition: color var(--duration-fast) var(--ease-out);
}

.contact-detail-content a:hover {
  color: var(--color-accent);
}

/* QR Codes Section */
.qr-codes-section {
  margin-top: var(--space-6);
  padding-top: var(--space-6);
  border-top: 1px solid var(--color-light-gray);
}

.qr-codes-title {
  font-family: var(--font-body);
  font-size: var(--text-sm);
  font-weight: 600;
  color: var(--text-muted);
  text-transform: uppercase;
  letter-spacing: var(--tracking-wide);
  margin-bottom: var(--space-4);
}

.qr-codes-grid {
  display: grid;
  grid-template-columns: repeat(2, 1fr);
  gap: var(--space-4);
}

.qr-code-item {
  text-align: center;
}

.qr-code-image {
  width: 100%;
  max-width: 120px;
  aspect-ratio: 1;
  background: var(--bg-secondary);
  border-radius: var(--radius-md);
  margin: 0 auto var(--space-2);
  display: flex;
  align-items: center;
  justify-content: center;
  overflow: hidden;
}

.qr-code-image img {
  width: 100%;
  height: 100%;
  object-fit: cover;
}

.qr-code-image i {
  font-size: 2rem;
  color: var(--text-muted);
}

.qr-code-label {
  font-size: var(--text-sm);
  color: var(--text-secondary);
}

/* ============================================
   Contact Form Panel
   ============================================ */
.contact-form-panel {
  background: var(--bg-primary);
  border-radius: var(--radius-lg);
  padding: var(--space-8);
  box-shadow: var(--shadow-lg);
}

.contact-form-header {
  margin-bottom: var(--space-6);
}

.contact-form-header .section-label {
  font-family: var(--font-body);
  font-size: var(--text-sm);
  color: var(--color-accent);
  text-transform: uppercase;
  letter-spacing: var(--tracking-wider);
  margin-bottom: var(--space-2);
}

.contact-form-header .section-title {
  font-family: var(--font-display);
  font-size: var(--text-2xl);
  color: var(--text-primary);
  margin-bottom: var(--space-3);
}

.contact-form-header .section-desc {
  font-size: var(--text-base);
  color: var(--text-muted);
}

/* Form Styles */
.contact-form {
  display: flex;
  flex-direction: column;
  gap: var(--space-5);
}

.form-row {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: var(--space-5);
}

.form-group {
  display: flex;
  flex-direction: column;
}

.form-group.full-width {
  grid-column: 1 / -1;
}

.form-label {
  font-size: var(--text-sm);
  font-weight: 600;
  color: var(--text-secondary);
  margin-bottom: var(--space-2);
  display: flex;
  align-items: center;
  gap: var(--space-1);
}

.form-label .required {
  color: var(--color-error);
}

.form-input,
.form-textarea,
.form-select {
  width: 100%;
  padding: var(--space-3) var(--space-4);
  font-size: var(--text-base);
  font-family: var(--font-body);
  color: var(--text-primary);
  background: var(--bg-secondary);
  border: 2px solid var(--color-light-gray);
  border-radius: var(--radius-md);
  transition: all var(--duration-fast) var(--ease-out);
}

.form-input:hover,
.form-textarea:hover,
.form-select:hover {
  border-color: var(--color-medium-gray);
}

.form-input:focus,
.form-textarea:focus,
.form-select:focus {
  outline: none;
  border-color: var(--color-accent);
  box-shadow: 0 0 0 3px rgba(201, 162, 39, 0.2);
  background: var(--bg-primary);
}

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

.form-textarea {
  min-height: 150px;
  resize: vertical;
}

.form-select {
  appearance: none;
  cursor: pointer;
  background-image: url("data:image/svg+xml,%3Csvg xmlns='http://www.w3.org/2000/svg' width='12' height='12' viewBox='0 0 12 12'%3E%3Cpath fill='%236c757d' d='M6 8L1 3h10z'/%3E%3C/svg%3E");
  background-repeat: no-repeat;
  background-position: right var(--space-4) center;
  padding-right: var(--space-10);
}

/* Error States */
.form-group.has-error .form-input,
.form-group.has-error .form-textarea,
.form-group.has-error .form-select {
  border-color: var(--color-error);
  background: rgba(220, 53, 69, 0.05);
}

.form-group.has-error .form-input:focus,
.form-group.has-error .form-textarea:focus,
.form-group.has-error .form-select:focus {
  box-shadow: 0 0 0 3px rgba(220, 53, 69, 0.2);
}

.form-error {
  display: flex;
  align-items: center;
  gap: var(--space-2);
  font-size: var(--text-sm);
  color: var(--color-error);
  margin-top: var(--space-2);
  animation: fadeInUp 0.3s var(--ease-out);
}

.form-error i {
  font-size: var(--text-xs);
}

/* Success State */
.form-group.has-success .form-input,
.form-group.has-success .form-textarea {
  border-color: var(--color-success);
}

/* Submit Button */
.form-submit {
  margin-top: var(--space-4);
}

.btn-submit {
  width: 100%;
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: var(--space-2);
  padding: var(--space-4) var(--space-8);
  font-size: var(--text-sm);
  font-weight: 600;
  text-transform: uppercase;
  letter-spacing: var(--tracking-wide);
  color: var(--color-primary);
  background: var(--color-accent);
  border: none;
  border-radius: var(--radius-md);
  cursor: pointer;
  transition: all var(--duration-normal) var(--ease-out);
}

.btn-submit:hover:not(:disabled) {
  background: var(--color-accent-light);
  transform: translateY(-2px);
  box-shadow: var(--shadow-gold);
}

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

.btn-submit:disabled {
  opacity: 0.6;
  cursor: not-allowed;
}

.btn-submit.loading {
  pointer-events: none;
}

.btn-submit .spinner {
  width: 18px;
  height: 18px;
  border: 2px solid transparent;
  border-top-color: currentColor;
  border-radius: 50%;
  animation: spin 0.8s linear infinite;
}

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

/* Form Note */
.form-note {
  font-size: var(--text-sm);
  color: var(--text-muted);
  text-align: center;
  margin-top: var(--space-4);
}

.form-note a {
  color: var(--color-accent);
  text-decoration: none;
}

.form-note a:hover {
  text-decoration: underline;
}

/* ============================================
   Success Message
   ============================================ */
.form-success-message {
  display: none;
  text-align: center;
  padding: var(--space-10) var(--space-6);
  animation: fadeInUp 0.5s var(--ease-out);
}

.form-success-message.visible {
  display: block;
}

.success-icon {
  width: 80px;
  height: 80px;
  margin: 0 auto var(--space-5);
  background: linear-gradient(135deg, var(--color-success), #20c997);
  border-radius: 50%;
  display: flex;
  align-items: center;
  justify-content: center;
}

.success-icon i {
  font-size: 2.5rem;
  color: var(--text-inverse);
}

.success-title {
  font-family: var(--font-display);
  font-size: var(--text-2xl);
  color: var(--text-primary);
  margin-bottom: var(--space-3);
}

.success-message {
  font-size: var(--text-base);
  color: var(--text-muted);
  margin-bottom: var(--space-6);
  max-width: 400px;
  margin-left: auto;
  margin-right: auto;
}

.btn-reset {
  display: inline-flex;
  align-items: center;
  gap: var(--space-2);
  padding: var(--space-3) var(--space-6);
  font-size: var(--text-sm);
  font-weight: 600;
  color: var(--text-primary);
  background: transparent;
  border: 2px solid var(--color-light-gray);
  border-radius: var(--radius-md);
  cursor: pointer;
  transition: all var(--duration-fast) var(--ease-out);
}

.btn-reset:hover {
  border-color: var(--color-accent);
  color: var(--color-accent);
}

/* ============================================
   Map Section
   ============================================ */
.contact-map-section {
  background: var(--bg-primary);
  padding: var(--section-padding-y) 0;
}

.contact-map-section .section-header {
  text-align: center;
  margin-bottom: var(--space-8);
}

.contact-map-section .section-label {
  font-family: var(--font-body);
  font-size: var(--text-sm);
  color: var(--color-accent);
  text-transform: uppercase;
  letter-spacing: var(--tracking-wider);
  margin-bottom: var(--space-3);
}

.contact-map-section .section-title {
  font-family: var(--font-display);
  font-size: var(--text-3xl);
  color: var(--text-primary);
}

.contact-map-wrapper {
  border-radius: var(--radius-lg);
  overflow: hidden;
  box-shadow: var(--shadow-lg);
}

.contact-map {
  width: 100%;
  height: 400px;
  background: var(--bg-secondary);
  display: flex;
  align-items: center;
  justify-content: center;
}

.map-placeholder {
  text-align: center;
  color: var(--text-muted);
}

.map-placeholder i {
  font-size: 3rem;
  color: var(--color-accent);
  margin-bottom: var(--space-3);
}

.map-placeholder p {
  font-size: var(--text-lg);
}

/* ============================================
   Scroll Reveal Animations
   ============================================ */
.reveal {
  opacity: 0;
  transform: translateY(40px);
  transition: opacity var(--duration-slow) var(--ease-out),
              transform var(--duration-slow) var(--ease-out);
}

.reveal.visible {
  opacity: 1;
  transform: translateY(0);
}

@keyframes fadeInUp {
  from {
    opacity: 0;
    transform: translateY(30px);
  }
  to {
    opacity: 1;
    transform: translateY(0);
  }
}

/* ============================================
   Responsive Styles
   ============================================ */
@media (max-width: 1024px) {
  .contact-grid {
    grid-template-columns: 1fr;
    gap: var(--space-6);
  }
  
  .contact-info-panel {
    order: 2;
  }
  
  .contact-form-panel {
    order: 1;
  }
}

@media (max-width: 768px) {
  .contact-hero {
    min-height: 50vh;
  }
  
  .contact-hero .page-title {
    font-size: var(--text-4xl);
  }
  
  .form-row {
    grid-template-columns: 1fr;
    gap: var(--space-4);
  }
  
  .contact-info-panel,
  .contact-form-panel {
    padding: var(--space-6);
  }
  
  .qr-codes-grid {
    grid-template-columns: repeat(2, 1fr);
  }
  
  .contact-map {
    height: 300px;
  }
}

@media (max-width: 480px) {
  .contact-hero .page-title {
    font-size: var(--text-3xl);
  }
  
  .contact-info-panel,
  .contact-form-panel {
    padding: var(--space-5);
  }
  
  .contact-detail-item {
    flex-direction: column;
    gap: var(--space-3);
  }
  
  .contact-detail-icon {
    width: 40px;
    height: 40px;
  }
  
  .qr-codes-grid {
    grid-template-columns: 1fr 1fr;
    gap: var(--space-3);
  }
  
  .qr-code-image {
    max-width: 100px;
  }
}

/* ============================================
   Reduced Motion Support
   ============================================ */
@media (prefers-reduced-motion: reduce) {
  .reveal {
    opacity: 1;
    transform: none;
    transition: none;
  }
  
  .contact-hero .page-label,
  .contact-hero .page-title,
  .contact-hero .page-desc {
    animation: none;
  }
  
  .form-error {
    animation: none;
  }
  
  .form-success-message {
    animation: none;
  }
  
  .btn-submit .spinner {
    animation: none;
  }
}