/* ========================================================
   SMILEWORX DENTAL CARE — MASTER STYLESHEET
   Authentic Signboard Colors: Royal Plum (#4E2045) & Signature Gold (#DFC066)
   Tech Stack: Pure HTML5, CSS3, Vanilla JavaScript
   ======================================================== */

:root {
  /* Authentic Signboard Royal Clinic Plum Palette */
  --plum-primary: #4E2045;       /* Authentic Signboard Royal Plum */
  --plum-deep: #3A1434;          /* Deep Regal Plum Base */
  --plum-darkest: #270B22;       /* Ultra-deep Header/Footer Base */
  --plum-secondary: #6A285E;     /* Vibrant Accent Plum */
  --plum-tint: #F7EFF5;          /* Soft Plum Card/Badge Tint */
  --plum-subtle: #EDE0EB;        /* Soft Plum Divider */
  --plum-border: #DEC3D8;        /* Soft Plum Border */

  /* Signboard Signature Metallic Gold */
  --gold-signature: #DFC066;     /* Signboard 3D Lettering Gold */
  --gold-bright: #ECCF79;        /* Hover / Glow Gold */
  --gold-light: #F4E2AA;         /* Light Accent Gold */
  --gold-dark: #BFA047;          /* Shadow / Rich Edge Gold */
  --gold-soft: rgba(223, 192, 102, 0.16);
  --gold-border: rgba(223, 192, 102, 0.38);

  /* Warm Neutrals & Backgrounds */
  --bg-ivory: #FAF7F2;
  --bg-cream: #F4EFE7;
  --bg-white: #FFFFFF;
  --bg-card: #FFFFFF;

  /* Typography Colors */
  --text-primary: #29232A;
  --text-secondary: #685E6A;
  --text-muted: #8E8391;
  --text-inverse: #FAF7F0;
  --text-inverse-muted: #D8CED6;

  /* UI Borders & Accents */
  --border-light: #E5DCE3;
  --border-subtle: #EDE5EB;

  /* Typography Tokens */
  --font-display: 'DM Serif Display', 'Cormorant Garamond', Georgia, serif;
  --font-body: 'Plus Jakarta Sans', system-ui, -apple-system, sans-serif;

  /* Layout Spacing */
  --container-max: 1260px;
  --container-wide: 1380px;
  --radius-sm: 4px;
  --radius-md: 8px;
  --radius-lg: 12px;

  /* Transitions & Shadows */
  --transition-fast: 0.2s cubic-bezier(0.16, 1, 0.3, 1);
  --transition-smooth: 0.35s cubic-bezier(0.16, 1, 0.3, 1);
  --shadow-subtle: 0 4px 20px -2px rgba(53, 19, 47, 0.05);
  --shadow-editorial: 0 16px 40px -8px rgba(53, 19, 47, 0.09);
  --shadow-elevated: 0 24px 50px -12px rgba(53, 19, 47, 0.16);
}

/* Base Reset */
*, *::before, *::after {
  box-sizing: border-box;
  margin: 0;
  padding: 0;
}

html {
  font-size: 16px;
  scroll-behavior: smooth;
  -webkit-font-smoothing: antialiased;
  -moz-osx-font-smoothing: grayscale;
  background-color: var(--bg-ivory);
  color: var(--text-primary);
}

body {
  font-family: var(--font-body);
  font-size: 1rem;
  line-height: 1.65;
  color: var(--text-primary);
  background-color: var(--bg-ivory);
  min-height: 100vh;
  display: flex;
  flex-direction: column;
  overflow-x: hidden;
}

img {
  max-width: 100%;
  height: auto;
  display: block;
}

button, input, select, textarea {
  font-family: inherit;
  font-size: inherit;
  color: inherit;
}

a {
  color: inherit;
  text-decoration: none;
  transition: color var(--transition-fast);
}

:focus-visible {
  outline: 2px solid var(--gold-signature);
  outline-offset: 3px;
}

/* Layout Containers */
.container {
  width: 100%;
  max-width: var(--container-max);
  margin-left: auto;
  margin-right: auto;
  padding-left: 1.5rem;
  padding-right: 1.5rem;
}

@media (min-width: 1024px) {
  .container {
    padding-left: 2.5rem;
    padding-right: 2.5rem;
  }
}

.container-wide {
  width: 100%;
  max-width: var(--container-wide);
  margin-left: auto;
  margin-right: auto;
  padding-left: 1.5rem;
  padding-right: 1.5rem;
}

/* Editorial Typography */
h1, h2, h3, h4, .font-serif {
  font-family: var(--font-display);
  font-weight: 400;
  line-height: 1.15;
  color: var(--text-primary);
  letter-spacing: -0.015em;
}

.headline-hero {
  font-size: clamp(2.25rem, 5.2vw, 4.25rem);
  line-height: 1.12;
  letter-spacing: -0.02em;
}

.headline-section {
  font-size: clamp(1.85rem, 3.8vw, 3rem);
  line-height: 1.2;
  letter-spacing: -0.015em;
}

.headline-sub {
  font-size: clamp(1.4rem, 2.4vw, 2rem);
  line-height: 1.25;
}

.headline-card {
  font-size: clamp(1.2rem, 1.8vw, 1.5rem);
  line-height: 1.3;
}

/* Category & Kicker Labels */
.editorial-kicker {
  display: inline-flex;
  align-items: center;
  gap: 0.6rem;
  font-family: var(--font-body);
  font-size: 0.75rem;
  font-weight: 700;
  letter-spacing: 0.15em;
  text-transform: uppercase;
  color: var(--plum-secondary);
  margin-bottom: 0.85rem;
}

.editorial-kicker::before {
  content: '';
  display: inline-block;
  width: 1.5rem;
  height: 1.5px;
  background-color: var(--gold-signature);
}

.editorial-kicker-gold {
  color: var(--gold-signature);
}

.editorial-kicker-gold::before {
  background-color: var(--gold-light);
}

/* Tamil Typography Details */
.tamil-script {
  font-family: 'Mukta Malar', 'Noto Sans Tamil', system-ui, sans-serif;
  font-size: 0.88em;
  letter-spacing: 0.02em;
}

/* Editorial Rules & Dividers */
.gold-divider {
  width: 48px;
  height: 2px;
  background-color: var(--gold-signature);
  margin: 1.25rem 0;
}

.subtle-line {
  border: 0;
  height: 1px;
  background: var(--border-light);
  margin: 2rem 0;
}

/* Buttons */
.btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: 0.6rem;
  min-height: 48px;
  padding: 0.85rem 1.85rem;
  font-size: 0.88rem;
  font-weight: 600;
  letter-spacing: 0.04em;
  text-transform: uppercase;
  border-radius: var(--radius-sm);
  border: 1px solid transparent;
  cursor: pointer;
  transition: all var(--transition-fast);
  white-space: nowrap;
  text-decoration: none;
}

.btn-primary {
  background-color: var(--plum-primary);
  color: var(--gold-light);
  border-color: var(--plum-deep);
  box-shadow: 0 4px 14px rgba(81, 32, 68, 0.22);
}

.btn-primary:hover {
  background-color: var(--plum-deep);
  color: #FFFFFF;
  transform: translateY(-1px);
  box-shadow: 0 8px 20px rgba(53, 19, 47, 0.3);
}

.btn-secondary {
  background-color: transparent;
  color: var(--plum-primary);
  border-color: var(--plum-primary);
}

.btn-secondary:hover {
  background-color: var(--plum-tint);
  border-color: var(--plum-secondary);
  color: var(--plum-deep);
}

.btn-gold {
  background: linear-gradient(135deg, #DFC066 0%, #C9A74E 100%);
  color: #270B22;
  border-color: #DFC066;
  font-weight: 700;
  box-shadow: 0 4px 14px rgba(223, 192, 102, 0.28);
}

.btn-gold:hover {
  background: linear-gradient(135deg, #ECCF79 0%, #DFC066 100%);
  border-color: #ECCF79;
  transform: translateY(-1px);
  box-shadow: 0 6px 18px rgba(223, 192, 102, 0.4);
  color: #1A0516;
}

.btn-outline-light {
  background-color: transparent;
  color: var(--bg-ivory);
  border-color: rgba(244, 226, 170, 0.5);
}

.btn-outline-light:hover {
  background-color: rgba(223, 192, 102, 0.15);
  border-color: var(--gold-signature);
  color: var(--gold-light);
}

.btn-text {
  display: inline-flex;
  align-items: center;
  gap: 0.5rem;
  font-weight: 600;
  font-size: 0.9rem;
  color: var(--plum-primary);
  padding: 0.25rem 0;
  position: relative;
}

.btn-text::after {
  content: '';
  position: absolute;
  bottom: 0;
  left: 0;
  width: 100%;
  height: 1px;
  background-color: var(--gold-signature);
  transition: transform var(--transition-fast);
  transform-origin: left;
}

.btn-text:hover::after {
  transform: scaleX(1.15);
  background-color: var(--plum-primary);
}

/* Navigation Links */
.nav-link-dark {
  position: relative;
  font-size: 0.92rem;
  font-weight: 500;
  letter-spacing: 0.03em;
  color: #FAF7F0;
  padding: 0.4rem 0;
  transition: color var(--transition-fast);
  text-decoration: none;
}

.nav-link-dark::after {
  content: '';
  position: absolute;
  bottom: -4px;
  left: 0;
  width: 0%;
  height: 2px;
  background-color: var(--gold-signature);
  transition: width var(--transition-fast);
}

.nav-link-dark:hover, .nav-link-dark.active {
  color: var(--gold-signature);
}

.nav-link-dark:hover::after, .nav-link-dark.active::after {
  width: 100%;
}

/* Badges & Cards */
.badge-plum {
  display: inline-flex;
  align-items: center;
  gap: 0.4rem;
  padding: 0.35rem 0.85rem;
  background-color: rgba(78, 32, 69, 0.08);
  border: 1px solid rgba(78, 32, 69, 0.22);
  border-radius: var(--radius-sm);
  color: var(--plum-primary);
  font-size: 0.8rem;
  font-weight: 600;
  letter-spacing: 0.04em;
}

.badge-plum-gold {
  display: inline-flex;
  align-items: center;
  gap: 0.45rem;
  padding: 0.35rem 0.85rem;
  background-color: var(--plum-deep);
  border: 1px solid var(--gold-signature);
  border-radius: var(--radius-sm);
  color: var(--gold-light);
  font-size: 0.8rem;
  font-weight: 600;
  letter-spacing: 0.04em;
}

.badge-tag {
  display: inline-flex;
  align-items: center;
  padding: 0.3rem 0.75rem;
  font-size: 0.72rem;
  font-weight: 700;
  letter-spacing: 0.08em;
  text-transform: uppercase;
  border-radius: var(--radius-sm);
  background-color: rgba(81, 32, 68, 0.07);
  color: var(--plum-primary);
  border: 1px solid var(--border-light);
}

.badge-tag-gold {
  background-color: var(--gold-soft);
  color: var(--plum-deep);
  border-color: var(--gold-border);
}

.clinic-accent-card {
  background-color: #FFFFFF;
  border: 1px solid var(--border-light);
  border-top: 3px solid var(--plum-primary);
  border-radius: var(--radius-sm);
  transition: all var(--transition-smooth);
}

.clinic-accent-card:hover {
  border-top-color: var(--gold-signature);
  box-shadow: 0 12px 30px rgba(78, 32, 69, 0.1);
  transform: translateY(-2px);
}

/* Image Frames & Borders */
.editorial-frame {
  position: relative;
  overflow: hidden;
  border-radius: var(--radius-sm);
  background-color: var(--plum-tint);
}

.editorial-frame img {
  width: 100%;
  height: 100%;
  object-fit: cover;
  transition: transform 0.8s cubic-bezier(0.16, 1, 0.3, 1);
}

.editorial-frame:hover img {
  transform: scale(1.025);
}

.gold-offset-border {
  position: relative;
}

.gold-offset-border::after {
  content: '';
  position: absolute;
  top: 16px;
  left: 16px;
  right: -16px;
  bottom: -16px;
  border: 1px solid var(--gold-border);
  border-radius: var(--radius-sm);
  pointer-events: none;
  z-index: -1;
  transition: transform var(--transition-smooth);
}

.gold-offset-border:hover::after {
  transform: translate(4px, 4px);
  border-color: var(--gold-signature);
}

/* Sections & Spacing */
.section-padding {
  padding-top: clamp(3.5rem, 6.5vw, 6.5rem);
  padding-bottom: clamp(3.5rem, 6.5vw, 6.5rem);
}

.section-padding-sm {
  padding-top: clamp(2rem, 4vw, 3.5rem);
  padding-bottom: clamp(2rem, 4vw, 3.5rem);
}

/* Editorial Grid Layouts */
.editorial-grid-2 {
  display: grid;
  grid-template-columns: 1fr;
  gap: 2.5rem;
  align-items: center;
}

@media (min-width: 900px) {
  .editorial-grid-2 {
    grid-template-columns: 1.1fr 0.9fr;
    gap: 4.5rem;
  }
  .editorial-grid-2.reverse {
    grid-template-columns: 0.9fr 1.1fr;
  }
}

/* Header & Utility Bar */
.top-bar {
  background-color: var(--plum-deep);
  color: var(--gold-light);
  font-size: 0.8rem;
  padding: 0.45rem 0;
  border-bottom: 1px solid rgba(216, 189, 99, 0.2);
}

.top-bar-inner {
  display: flex;
  justify-content: space-between;
  align-items: center;
  flex-wrap: wrap;
  gap: 0.5rem;
}

.top-bar-left {
  display: flex;
  align-items: center;
  gap: 1.25rem;
  flex-wrap: wrap;
}

.site-header {
  position: sticky;
  top: 0;
  z-index: 80;
  background-color: var(--plum-primary);
  border-bottom: 1px solid rgba(223, 192, 102, 0.35);
  transition: all var(--transition-smooth);
  box-shadow: 0 2px 12px rgba(39, 11, 34, 0.15);
}

.site-header.scrolled {
  background-color: rgba(58, 20, 52, 0.98);
  backdrop-filter: blur(10px);
  -webkit-backdrop-filter: blur(10px);
  box-shadow: 0 6px 24px rgba(39, 11, 34, 0.3);
}

.header-container {
  display: flex;
  align-items: center;
  justify-content: space-between;
  height: 82px;
  transition: height var(--transition-smooth);
}

.site-header.scrolled .header-container {
  height: 72px;
}

.header-logo img {
  height: 52px;
  width: auto;
  transition: height var(--transition-smooth);
}

.site-header.scrolled .header-logo img {
  height: 46px;
}

.desktop-nav {
  display: none;
  align-items: center;
  gap: 2.25rem;
}

@media (min-width: 900px) {
  .desktop-nav {
    display: flex;
  }
}

.desktop-actions {
  display: none;
  align-items: center;
  gap: 1.25rem;
}

@media (min-width: 900px) {
  .desktop-actions {
    display: flex;
  }
}

.mobile-menu-btn {
  display: flex;
  align-items: center;
  justify-content: center;
  width: 44px;
  height: 44px;
  border-radius: var(--radius-sm);
  background: rgba(223, 192, 102, 0.12);
  border: 1px solid rgba(223, 192, 102, 0.3);
  color: var(--gold-light);
  cursor: pointer;
  transition: all var(--transition-fast);
}

@media (min-width: 900px) {
  .mobile-menu-btn {
    display: none;
  }
}

/* Mobile Drawer Menu */
.mobile-drawer {
  display: none;
  position: absolute;
  top: 100%;
  left: 0;
  right: 0;
  background-color: var(--plum-deep);
  border-bottom: 2px solid var(--gold-signature);
  box-shadow: 0 16px 32px rgba(39, 11, 34, 0.45);
  z-index: 99;
  padding: 1.5rem;
}

.mobile-drawer.open {
  display: block;
}

.mobile-nav-list {
  list-style: none;
  display: flex;
  flex-direction: column;
  gap: 0.75rem;
  margin-bottom: 1.5rem;
}

.mobile-nav-link {
  display: flex;
  align-items: center;
  justify-content: space-between;
  padding: 0.85rem 1rem;
  color: #FAF7F0;
  font-size: 1.05rem;
  font-weight: 500;
  border-radius: var(--radius-sm);
  background: rgba(255, 255, 255, 0.04);
  border: 1px solid rgba(223, 192, 102, 0.15);
  transition: all var(--transition-fast);
}

.mobile-nav-link:hover, .mobile-nav-link.active {
  background: rgba(223, 192, 102, 0.15);
  border-color: var(--gold-signature);
  color: var(--gold-light);
}

/* Mobile Action Bar */
.mobile-action-bar {
  display: none;
  position: fixed;
  bottom: 0;
  left: 0;
  right: 0;
  background: rgba(250, 247, 240, 0.96);
  backdrop-filter: blur(12px);
  -webkit-backdrop-filter: blur(12px);
  border-top: 1px solid var(--border-light);
  padding: 0.65rem 1rem;
  padding-bottom: max(0.65rem, env(safe-area-inset-bottom));
  z-index: 90;
  box-shadow: 0 -4px 16px rgba(53, 19, 47, 0.08);
}

@media (max-width: 767px) {
  .mobile-action-bar {
    display: flex;
    gap: 0.75rem;
  }
  body {
    padding-bottom: 72px;
  }
}

/* Before / After Slider Specific Styles */
.before-after-container {
  position: relative;
  width: 100%;
  aspect-ratio: 16 / 9;
  max-height: 580px;
  overflow: hidden;
  border-radius: var(--radius-sm);
  user-select: none;
  -webkit-user-select: none;
  cursor: ew-resize;
  background-color: #1a161b;
  box-shadow: var(--shadow-editorial);
}

@media (max-width: 640px) {
  .before-after-container {
    aspect-ratio: 4 / 3;
  }
}

.before-after-image {
  position: absolute;
  top: 0;
  left: 0;
  width: 100%;
  height: 100%;
  object-fit: cover;
  pointer-events: none;
}

.before-after-handle {
  position: absolute;
  top: 0;
  bottom: 0;
  width: 2px;
  background: #FFFFFF;
  box-shadow: 0 0 10px rgba(0, 0, 0, 0.45);
  z-index: 10;
  display: flex;
  align-items: center;
  justify-content: center;
}

.before-after-button {
  width: 44px;
  height: 44px;
  border-radius: 50%;
  background: var(--gold-signature);
  border: 2px solid #FFFFFF;
  box-shadow: 0 4px 14px rgba(39, 11, 34, 0.4);
  display: flex;
  align-items: center;
  justify-content: center;
  color: var(--plum-deep);
  cursor: ew-resize;
  transition: transform var(--transition-fast), background-color var(--transition-fast);
}

.before-after-button:hover {
  transform: scale(1.1);
  background: var(--gold-bright);
  color: #1A0516;
}

.before-after-tag {
  position: absolute;
  top: 1rem;
  padding: 0.35rem 0.75rem;
  font-size: 0.75rem;
  font-weight: 700;
  letter-spacing: 0.08em;
  text-transform: uppercase;
  border-radius: var(--radius-sm);
  backdrop-filter: blur(8px);
  -webkit-backdrop-filter: blur(8px);
  z-index: 5;
  pointer-events: none;
}

.before-after-tag.before {
  left: 1rem;
  background: rgba(39, 11, 34, 0.88);
  color: #FAF7F0;
  border: 1px solid rgba(223, 192, 102, 0.4);
}

.before-after-tag.after {
  right: 1rem;
  background: rgba(223, 192, 102, 0.95);
  color: var(--plum-deep);
  border: 1px solid rgba(255, 255, 255, 0.6);
  font-weight: 800;
}

/* Form Styles */
.form-group {
  margin-bottom: 1.4rem;
}

.form-label {
  display: block;
  font-size: 0.84rem;
  font-weight: 600;
  letter-spacing: 0.02em;
  color: var(--text-primary);
  margin-bottom: 0.45rem;
}

.form-input, .form-select, .form-textarea {
  width: 100%;
  padding: 0.85rem 1rem;
  font-size: 0.95rem;
  background-color: #FFFFFF;
  border: 1px solid var(--border-light);
  border-radius: var(--radius-sm);
  color: var(--text-primary);
  transition: border-color var(--transition-fast), box-shadow var(--transition-fast);
}

.form-input:focus, .form-select:focus, .form-textarea:focus {
  border-color: var(--plum-primary);
  box-shadow: 0 0 0 3px rgba(81, 32, 68, 0.1);
  outline: none;
}

.form-input.error, .form-select.error, .form-textarea.error {
  border-color: #C53030;
  background-color: #FFF5F5;
}

.form-error-msg {
  font-size: 0.78rem;
  color: #C53030;
  margin-top: 0.35rem;
  display: none;
}

.form-error-msg.visible {
  display: block;
}

/* Site Footer */
.site-footer {
  background-color: var(--plum-darkest);
  color: #FAF7F0;
  border-top: 3px solid var(--gold-signature);
  padding-top: 4.5rem;
  padding-bottom: 2.5rem;
  margin-top: auto;
}

.footer-grid {
  display: grid;
  grid-template-columns: 1fr;
  gap: 3rem;
  margin-bottom: 3.5rem;
}

@media (min-width: 768px) {
  .footer-grid {
    grid-template-columns: repeat(2, 1fr);
  }
}

@media (min-width: 1024px) {
  .footer-grid {
    grid-template-columns: 1.5fr 1fr 1fr 1.2fr;
  }
}

.footer-heading {
  font-size: 0.85rem;
  font-weight: 700;
  text-transform: uppercase;
  letter-spacing: 0.12em;
  color: var(--gold-signature);
  margin-bottom: 1.25rem;
}

.footer-links {
  list-style: none;
  display: flex;
  flex-direction: column;
  gap: 0.75rem;
}

.footer-links a {
  color: var(--text-inverse-muted);
  font-size: 0.92rem;
  transition: color var(--transition-fast);
}

.footer-links a:hover {
  color: var(--gold-bright);
}

/* Accessible reduced motion */
@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;
  }
}