/* Modernsmile Dental Clinic - Core Design System & Global Styles */
@import url('https://fonts.googleapis.com/css2?family=Prompt:wght@300;400;500;600;700&family=Inter:wght@400;500;600;700&display=swap');

:root {
  /* User Specified Primary Palette */
  --primary-teal: #076B56;
  --emerald-green: #01814E;
  --vivid-green: #5FBC38;
  --sky-blue: #0299D0;
  --dark-charcoal: #2E2E2E;
  --pure-white: #FFFFFF;

  /* Derived Tonal Variations & UI Colors */
  --teal-light: #0a8c71;
  --teal-dark: #044b3c;
  --teal-soft-bg: #f0f8f5;
  --teal-surface: #e4f3ee;
  
  --emerald-soft: #e8f6f0;
  --vivid-green-soft: #eff9e8;
  --sky-blue-soft: #e6f5fa;
  
  --gray-100: #F8FAFC;
  --gray-200: #E2E8F0;
  --gray-300: #CBD5E1;
  --gray-400: #94A3B8;
  --gray-500: #64748B;
  --gray-600: #475569;
  --gray-700: #334155;
  --gray-800: #1E293B;

  /* Status Colors */
  --danger: #EF4444;
  --danger-soft: #FEE2E2;
  --warning: #F59E0B;
  --warning-soft: #FEF3C7;
  --success: var(--emerald-green);

  /* Elevation & Shadows */
  --shadow-sm: 0 1px 3px rgba(0,0,0,0.06), 0 1px 2px rgba(0,0,0,0.04);
  --shadow-md: 0 4px 6px -1px rgba(7, 107, 86, 0.08), 0 2px 4px -1px rgba(0, 0, 0, 0.03);
  --shadow-lg: 0 10px 15px -3px rgba(7, 107, 86, 0.12), 0 4px 6px -2px rgba(0, 0, 0, 0.05);
  --shadow-xl: 0 20px 25px -5px rgba(7, 107, 86, 0.15), 0 10px 10px -5px rgba(0, 0, 0, 0.04);

  /* Layout Constants */
  --radius-sm: 8px;
  --radius-md: 12px;
  --radius-lg: 16px;
  --radius-xl: 24px;
  --transition-fast: 0.15s ease;
  --transition-normal: 0.25s ease;
}

* {
  box-sizing: border-box;
  margin: 0;
  padding: 0;
}

body {
  font-family: 'Prompt', 'Inter', -apple-system, BlinkMacSystemFont, sans-serif;
  background-color: var(--teal-soft-bg);
  color: var(--dark-charcoal);
  line-height: 1.5;
  -webkit-font-smoothing: antialiased;
  min-height: 100vh;
  display: flex;
  flex-direction: column;
}

/* App Header */
.app-header {
  background: linear-gradient(135deg, var(--primary-teal) 0%, var(--teal-dark) 100%);
  color: var(--pure-white);
  padding: 1rem 2rem;
  box-shadow: var(--shadow-md);
  position: sticky;
  top: 0;
  z-index: 100;
}

.header-container {
  max-width: 1400px;
  margin: 0 auto;
  display: flex;
  align-items: center;
  justify-content: space-between;
  flex-wrap: wrap;
  gap: 1rem;
}

.brand-wrapper {
  display: flex;
  align-items: center;
  gap: 0.85rem;
}

.brand-logo {
  width: 46px;
  height: 46px;
  background: var(--pure-white);
  border-radius: var(--radius-md);
  display: flex;
  align-items: center;
  justify-content: center;
  box-shadow: 0 4px 10px rgba(0,0,0,0.15);
  color: var(--primary-teal);
}

.brand-title {
  font-size: 1.35rem;
  font-weight: 700;
  letter-spacing: -0.01em;
  display: flex;
  align-items: center;
  gap: 0.5rem;
}

.brand-subtitle {
  font-size: 0.825rem;
  color: rgba(255, 255, 255, 0.85);
  font-weight: 400;
}

.header-badges {
  display: flex;
  align-items: center;
  gap: 0.5rem;
}

.branch-pill {
  background: rgba(255, 255, 255, 0.15);
  backdrop-filter: blur(8px);
  border: 1px solid rgba(255, 255, 255, 0.25);
  padding: 0.35rem 0.85rem;
  border-radius: 50px;
  font-size: 0.8rem;
  font-weight: 500;
  color: var(--pure-white);
  display: inline-flex;
  align-items: center;
  gap: 0.35rem;
}

.branch-pill.pattaya {
  border-color: var(--vivid-green);
}

.branch-pill.sriracha {
  border-color: var(--sky-blue);
}

.branch-pill .dot {
  width: 8px;
  height: 8px;
  border-radius: 50%;
  background: var(--vivid-green);
}

.branch-pill.sriracha .dot {
  background: var(--sky-blue);
}

/* Navigation Tabs */
.app-nav {
  background: var(--pure-white);
  border-bottom: 1px solid var(--gray-200);
  box-shadow: var(--shadow-sm);
}

.nav-container {
  max-width: 1400px;
  margin: 0 auto;
  display: flex;
  gap: 0.5rem;
  padding: 0 2rem;
  overflow-x: auto;
  scrollbar-width: none;
}

.nav-container::-webkit-scrollbar {
  display: none;
}

.nav-tab {
  display: flex;
  align-items: center;
  gap: 0.6rem;
  padding: 0.9rem 1.25rem;
  background: transparent;
  border: none;
  border-bottom: 3px solid transparent;
  color: var(--gray-600);
  font-family: inherit;
  font-size: 0.95rem;
  font-weight: 500;
  cursor: pointer;
  transition: all var(--transition-fast);
  white-space: nowrap;
}

.nav-tab:hover {
  color: var(--primary-teal);
  background: var(--teal-soft-bg);
}

.nav-tab.active {
  color: var(--primary-teal);
  border-bottom-color: var(--primary-teal);
  font-weight: 600;
}

.nav-tab svg {
  width: 18px;
  height: 18px;
  stroke-width: 2;
}

/* App Main Container */
.app-main {
  flex: 1;
  max-width: 1400px;
  width: 100%;
  margin: 0 auto;
  padding: 1.75rem 2rem 3rem 2rem;
}

.tab-pane {
  display: none;
  animation: fadeIn 0.25s ease-in-out;
}

.tab-pane.active {
  display: block;
}

@keyframes fadeIn {
  from { opacity: 0; transform: translateY(6px); }
  to { opacity: 1; transform: translateY(0); }
}

/* Footer */
.app-footer {
  background: var(--dark-charcoal);
  color: rgba(255, 255, 255, 0.7);
  padding: 1.25rem 2rem;
  text-align: center;
  font-size: 0.85rem;
  margin-top: auto;
}

.app-footer strong {
  color: var(--pure-white);
}

/* Utility Classes */
.flex-between {
  display: flex;
  align-items: center;
  justify-content: space-between;
}

.text-teal { color: var(--primary-teal); }
.text-emerald { color: var(--emerald-green); }
.text-vivid { color: var(--vivid-green); }
.text-blue { color: var(--sky-blue); }
.text-muted { color: var(--gray-500); }

.bg-teal { background-color: var(--primary-teal); }
.bg-emerald { background-color: var(--emerald-green); }
.bg-vivid { background-color: var(--vivid-green); }
.bg-blue { background-color: var(--sky-blue); }

/* Responsive */
@media (max-width: 768px) {
  .app-header, .app-main {
    padding-left: 1rem;
    padding-right: 1rem;
  }
  .nav-container {
    padding-left: 1rem;
    padding-right: 1rem;
  }
  .brand-title {
    font-size: 1.15rem;
  }
  .nav-tab {
    padding: 0.75rem 0.9rem;
    font-size: 0.875rem;
  }
}