/* ==========================================================================
   Arunreah Dental Clinic - Link Hub Stylesheet
   Design Aesthetic: Medical, clean, soft blue-gray theme (#F5F9FC)
   ========================================================================== */

/* --------------------------------------------------------------------------
   1. CSS Custom Properties / Design Tokens
   -------------------------------------------------------------------------- */
:root {
  /* Brand Palette */
  --color-bg: #F5F9FC;
  --color-primary: #2888A4;
  --color-primary-hover: #1F738C;
  --color-primary-light: #EBF5F9;
  --color-brand-title: #1E7491;
  --color-tagline: #64748B;
  
  /* Neutral / Surface */
  --color-card-bg: #FFFFFF;
  --color-card-border: #E2EFF6;
  --color-card-border-hover: #CBDFF0;
  --color-text-main: #1E293B;
  --color-text-muted: #64748B;
  
  /* Inactive Pill State */
  --color-pill-inactive-bg: #FFFFFF;
  --color-pill-inactive-border: #BFE3EF;
  --color-pill-inactive-text: #2888A4;
  
  /* Shadows & Radius */
  --shadow-sm: 0 2px 8px rgba(40, 136, 164, 0.05);
  --shadow-card: 0 4px 14px rgba(40, 136, 164, 0.07);
  --shadow-card-hover: 0 8px 22px rgba(40, 136, 164, 0.14);
  --shadow-toggle: 0 3px 10px rgba(40, 136, 164, 0.12);
  --radius-card: 28px;
  --radius-pill: 9999px;
  --radius-circle: 50%;
  
  /* Layout Dimensions */
  --max-width: 400px;
  --header-logo-size: 76px;

  /* Typography */
  --font-family: 'Plus Jakarta Sans', system-ui, -apple-system, BlinkMacSystemFont, 'Segoe UI', Roboto, sans-serif;
  --font-family-khmer: 'Kantumruuy Pro', 'Noto Sans Khmer', var(--font-family);

  /* Transitions */
  --transition-fast: 0.15s ease;
  --transition-normal: 0.25s cubic-bezier(0.4, 0, 0.2, 1);
  --transition-slow: 0.35s cubic-bezier(0.4, 0, 0.2, 1);
}

/* --------------------------------------------------------------------------
   2. Reset & General Setup
   -------------------------------------------------------------------------- */
*, *::before, *::after {
  box-sizing: border-box;
  margin: 0;
  padding: 0;
}

html {
  font-size: 16px;
  -webkit-text-size-adjust: 100%;
  scroll-behavior: smooth;
}

body {
  font-family: var(--font-family);
  background-color: var(--color-bg);
  color: var(--color-text-main);
  min-height: 100vh;
  display: flex;
  flex-direction: column;
  align-items: center;
  justify-content: flex-start;
  padding: 32px 20px 40px;
  line-height: 1.5;
  -webkit-font-smoothing: antialiased;
  -moz-osx-font-smoothing: grayscale;
}

/* --------------------------------------------------------------------------
   3. Main App Container
   -------------------------------------------------------------------------- */
.app-container {
  width: 100%;
  max-width: var(--max-width);
  margin: 0 auto;
  display: flex;
  flex-direction: column;
  align-items: center;
  position: relative;
}

/* --------------------------------------------------------------------------
   4. Top Header & Share Button
   -------------------------------------------------------------------------- */
.header-actions {
  width: 100%;
  display: flex;
  justify-content: flex-end;
  margin-bottom: -16px;
  z-index: 10;
}

.share-btn {
  width: 40px;
  height: 40px;
  border-radius: var(--radius-circle);
  background-color: var(--color-card-bg);
  border: 1px solid var(--color-card-border);
  color: var(--color-primary);
  display: inline-flex;
  align-items: center;
  justify-content: center;
  cursor: pointer;
  box-shadow: var(--shadow-sm);
  transition: transform var(--transition-fast), box-shadow var(--transition-fast), background-color var(--transition-fast);
}

.share-btn:hover {
  transform: translateY(-2px);
  box-shadow: var(--shadow-card);
  background-color: #FFFFFF;
  color: var(--color-primary-hover);
}

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

.share-btn svg {
  width: 18px;
  height: 18px;
  fill: none;
  stroke: currentColor;
  stroke-width: 2.2;
  stroke-linecap: round;
  stroke-linejoin: round;
}

/* --------------------------------------------------------------------------
   5. Clinic Branding / Profile Header
   -------------------------------------------------------------------------- */
.profile-header {
  display: flex;
  flex-direction: column;
  align-items: center;
  text-align: center;
  margin-bottom: 24px;
}

.logo-wrapper {
  width: var(--header-logo-size);
  height: var(--header-logo-size);
  border-radius: var(--radius-circle);
  background-color: var(--color-card-bg);
  padding: 6px;
  box-shadow: 0 4px 16px rgba(40, 136, 164, 0.09);
  border: 1px solid rgba(226, 239, 246, 0.8);
  display: flex;
  align-items: center;
  justify-content: center;
  margin-bottom: 16px;
}

.logo-img {
  width: 100%;
  height: 100%;
  object-fit: contain;
  border-radius: var(--radius-circle);
}

.company-name {
  font-size: 1.375rem; /* ~22px */
  font-weight: 700;
  color: var(--color-brand-title);
  letter-spacing: -0.01em;
  margin-bottom: 4px;
}

.company-tagline {
  font-family: var(--font-family-khmer);
  font-size: 0.9375rem; /* ~15px */
  font-weight: 500;
  color: var(--color-tagline);
  opacity: 0.9;
}

/* --------------------------------------------------------------------------
   6. Location / Branch Selector Tabs
   -------------------------------------------------------------------------- */
.branch-selector {
  width: 100%;
  display: flex;
  gap: 12px;
  margin-bottom: 24px;
}

.branch-tab {
  flex: 1;
  padding: 12px 16px;
  font-size: 0.9375rem;
  font-weight: 600;
  border-radius: var(--radius-card);
  cursor: pointer;
  text-align: center;
  border: 1px solid var(--color-pill-inactive-border);
  background-color: var(--color-pill-inactive-bg);
  color: var(--color-pill-inactive-text);
  transition: all var(--transition-normal);
  user-select: none;
  box-shadow: var(--shadow-sm);
  display: flex;
  align-items: center;
  justify-content: center;
}

.branch-tab:hover:not(.active) {
  border-color: var(--color-primary);
  background-color: var(--color-primary-light);
}

.branch-tab.active {
  background-color: var(--color-primary);
  color: #FFFFFF;
  border-color: var(--color-primary);
  box-shadow: var(--shadow-toggle);
}

/* --------------------------------------------------------------------------
   7. Link List Cards
   -------------------------------------------------------------------------- */
.link-list {
  width: 100%;
  display: flex;
  flex-direction: column;
  gap: 14px;
  margin-bottom: 24px;
  transition: opacity var(--transition-fast), transform var(--transition-fast);
}

.link-list.fading {
  opacity: 0;
  transform: translateY(4px);
}

.link-card {
  width: 100%;
  min-height: 54px;
  background-color: var(--color-card-bg);
  border: 1px solid var(--color-card-border);
  border-radius: var(--radius-card);
  padding: 10px 20px;
  display: flex;
  align-items: center;
  text-decoration: none;
  color: var(--color-text-main);
  box-shadow: var(--shadow-card);
  transition: transform var(--transition-normal), box-shadow var(--transition-normal), border-color var(--transition-normal);
  position: relative;
  overflow: hidden;
  cursor: pointer;
}

.link-card:hover {
  transform: translateY(-2px);
  box-shadow: var(--shadow-card-hover);
  border-color: var(--color-card-border-hover);
}

.link-card:active {
  transform: translateY(0);
}

.link-icon-container {
  width: 32px;
  height: 32px;
  display: flex;
  align-items: center;
  justify-content: center;
  flex-shrink: 0;
  margin-right: 12px;
}

.link-icon-img {
  width: 28px;
  height: 28px;
  object-fit: contain;
}

.link-title {
  flex: 1;
  text-align: center;
  font-size: 0.95rem;
  font-weight: 600;
  color: var(--color-text-main);
  margin-right: 32px; /* Balance the icon width on left */
  letter-spacing: -0.01em;
}

/* Contact Us card specific styling */
.link-card.contact-card {
  margin-top: 2px;
}

.link-card.contact-card .link-icon-container svg {
  width: 24px;
  height: 24px;
  stroke: var(--color-primary);
  fill: none;
  stroke-width: 2;
}

/* --------------------------------------------------------------------------
   8. Footer
   -------------------------------------------------------------------------- */
.footer {
  margin-top: auto;
  padding-top: 16px;
  text-align: center;
  display: flex;
  flex-direction: column;
  align-items: center;
  gap: 4px;
}

.footer-brand {
  font-size: 0.8125rem;
  font-weight: 700;
  color: var(--color-brand-title);
  text-decoration: none;
}

.footer-copyright {
  font-size: 0.75rem;
  color: var(--color-text-muted);
  opacity: 0.85;
}

/* --------------------------------------------------------------------------
   9. Toast Notification
   -------------------------------------------------------------------------- */
.toast {
  position: fixed;
  bottom: 24px;
  left: 50%;
  transform: translateX(-50%) translateY(100px);
  background-color: var(--color-text-main);
  color: #FFFFFF;
  padding: 10px 20px;
  border-radius: var(--radius-pill);
  font-size: 0.875rem;
  font-weight: 500;
  box-shadow: 0 10px 25px rgba(0, 0, 0, 0.2);
  opacity: 0;
  visibility: hidden;
  transition: transform 0.3s cubic-bezier(0.175, 0.885, 0.32, 1.275), opacity 0.3s ease, visibility 0.3s;
  z-index: 100;
  pointer-events: none;
}

.toast.show {
  transform: translateX(-50%) translateY(0);
  opacity: 1;
  visibility: visible;
}

/* --------------------------------------------------------------------------
   10. Contact Phone Modal Sheet
   -------------------------------------------------------------------------- */
.modal-overlay {
  position: fixed;
  top: 0;
  left: 0;
  width: 100vw;
  height: 100vh;
  background-color: rgba(15, 23, 42, 0.45);
  backdrop-filter: blur(4px);
  -webkit-backdrop-filter: blur(4px);
  display: flex;
  align-items: center;
  justify-content: center;
  padding: 20px;
  z-index: 200;
  opacity: 0;
  visibility: hidden;
  transition: opacity 0.25s ease, visibility 0.25s ease;
}

.modal-overlay.active {
  opacity: 1;
  visibility: visible;
}

.modal-card {
  width: 100%;
  max-width: 360px;
  background-color: var(--color-card-bg);
  border-radius: 24px;
  padding: 24px 20px 20px;
  box-shadow: 0 20px 40px rgba(15, 23, 42, 0.18);
  text-align: center;
  transform: scale(0.92) translateY(10px);
  transition: transform 0.25s cubic-bezier(0.175, 0.885, 0.32, 1.275);
}

.modal-overlay.active .modal-card {
  transform: scale(1) translateY(0);
}

.modal-title {
  font-size: 1.125rem;
  font-weight: 700;
  color: var(--color-brand-title);
  margin-bottom: 4px;
}

.modal-subtitle {
  font-size: 0.875rem;
  color: var(--color-text-muted);
  margin-bottom: 20px;
}

.modal-phone-list {
  display: flex;
  flex-direction: column;
  gap: 10px;
  margin-bottom: 16px;
}

.modal-phone-btn {
  width: 100%;
  padding: 14px 18px;
  background-color: var(--color-primary);
  color: #FFFFFF;
  text-decoration: none;
  font-size: 1rem;
  font-weight: 600;
  border-radius: var(--radius-pill);
  display: flex;
  align-items: center;
  justify-content: center;
  gap: 10px;
  box-shadow: var(--shadow-toggle);
  transition: background-color var(--transition-fast), transform var(--transition-fast);
}

.modal-phone-btn:hover {
  background-color: var(--color-primary-hover);
  transform: translateY(-2px);
}

.modal-phone-btn svg {
  width: 20px;
  height: 20px;
  fill: none;
  stroke: #FFFFFF;
  stroke-width: 2;
}

.modal-cancel-btn {
  width: 100%;
  padding: 12px;
  background: transparent;
  border: none;
  color: var(--color-text-muted);
  font-size: 0.875rem;
  font-weight: 600;
  cursor: pointer;
  border-radius: var(--radius-pill);
  transition: background-color var(--transition-fast), color var(--transition-fast);
}

.modal-cancel-btn:hover {
  background-color: #F1F5F9;
  color: var(--color-text-main);
}

/* --------------------------------------------------------------------------
   11. 404 Specific Layout
   -------------------------------------------------------------------------- */
.error-container {
  text-align: center;
  padding: 40px 0;
  display: flex;
  flex-direction: column;
  align-items: center;
}

.error-code {
  font-size: 4rem;
  font-weight: 800;
  color: var(--color-primary);
  line-height: 1;
  margin-bottom: 8px;
}

.error-title {
  font-size: 1.5rem;
  font-weight: 700;
  color: var(--color-brand-title);
  margin-bottom: 12px;
}

.error-desc {
  font-size: 0.9375rem;
  color: var(--color-text-muted);
  margin-bottom: 28px;
  max-width: 320px;
}

.btn-home {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  padding: 12px 28px;
  background-color: var(--color-primary);
  color: #FFFFFF;
  text-decoration: none;
  font-weight: 600;
  border-radius: var(--radius-pill);
  box-shadow: var(--shadow-toggle);
  transition: all var(--transition-fast);
}

.btn-home:hover {
  background-color: var(--color-primary-hover);
  transform: translateY(-2px);
}

/* --------------------------------------------------------------------------
   12. Accessibility Focus & Reduced Motion
   -------------------------------------------------------------------------- */
:focus-visible {
  outline: 2px solid var(--color-primary);
  outline-offset: 3px;
}

@media (prefers-reduced-motion: reduce) {
  *, *::before, *::after {
    animation-duration: 0.01ms !important;
    animation-iteration-count: 1 !important;
    transition-duration: 0.01ms !important;
    scroll-behavior: auto !important;
  }
}

/* --------------------------------------------------------------------------
   13. Responsive Adjustments
   -------------------------------------------------------------------------- */
@media (max-width: 480px) {
  body {
    padding: 24px 16px 32px;
  }

  .company-name {
    font-size: 1.25rem;
  }

  .branch-tab {
    padding: 10px 12px;
    font-size: 0.875rem;
  }

  .link-card {
    padding: 10px 16px;
    min-height: 50px;
  }

  .link-title {
    font-size: 0.875rem;
    margin-right: 28px;
  }
}