/* ==========================================================================
   VisionCraft Optics & Eye Care Studio - Design System
   Phase 1: Mathematical Token System (KiviCare Pattern)
   Phase 3: BEM Component Architecture (Clainc Pattern)
   Phase 4: 200+ Micro-Transitions & State Polish
   ========================================================================== */

:root {
  /* --- 1. Mathematical Brand Scale (Deep Optical Lens Green #1F3D33) --- */
  --brand:              #1F3D33;
  --brand-rgb:          31, 61, 51;
  --brand-shade-80:     #0a1410;   /* Darkest midnight green */
  --brand-shade-60:     #142820;
  --brand-shade-40:     #1a3129;
  --brand-shade-20:     #1b372e;
  --brand-tint-20:      #3d5a50;
  --brand-tint-40:      #6c837b;
  --brand-tint-60:      #9cad9e;
  --brand-tint-80:      #cbd6d2;
  --brand-tint-90:      #e5ebe9;   /* Light tinted section background */

  /* --- 2. WhatsApp Emerald Scale (#25D366) --- */
  --wa:                 #25D366;
  --wa-rgb:             37, 211, 102;
  --wa-dark:            #128C7E;
  --wa-shade-20:        #1da851;
  --wa-tint-80:         #d4f6e0;
  --wa-tint-90:         #eafaf0;

  /* --- 3. Warm Editorial Neutrals & Surfaces (WCAG AAA Compliant) --- */
  --ink:                #16181A;   /* Deep charcoal ink */
  --ink-rgb:            22, 24, 26;
  --ink-60:             #3C4248;   /* High contrast secondary copy (> 7.5:1 ratio) */
  --ink-40:             #565D66;   /* Accessible labels & metadata (> 4.8:1 ratio) */
  --surface:            #F4F1EC;   /* Warm off-white canvas */
  --surface-raised:     #FFFFFF;   /* Clean white cards */
  --surface-subtle:     #EBE7E0;   /* Secondary container background */
  --line:               #DDD8CE;   /* Hairline border */
  --line-dark:          #2A453A;   /* Dark container border */

  /* --- 4. Accent Gold & Accessible Alert Scales --- */
  --gold:               #9E6F0C;   /* Deep accessible amber gold */
  --gold-tint-80:       #F3E8C8;
  --gold-tint-90:       #FAF4E4;
  --color-success:      #166534;   /* Deep WCAG green */
  --color-success-bg:   #E8F5E9;

  /* --- 5. Fluid Typography Scale (Outfit + Plus Jakarta Sans) --- */
  --font-display:       'Outfit', system-ui, -apple-system, BlinkMacSystemFont, 'Segoe UI', Roboto, sans-serif;
  --font-body:          'Plus Jakarta Sans', system-ui, -apple-system, BlinkMacSystemFont, 'Segoe UI', Roboto, sans-serif;
  --font-urdu:          'Noto Nastaliq Urdu', 'Jameel Noori Nastaleeq', Tahoma, serif;

  --step--1:            clamp(0.82rem, 0.78rem + 0.18vw, 0.92rem);
  --step-0:             clamp(1rem, 0.95rem + 0.25vw, 1.12rem);
  --step-1:             clamp(1.3rem, 1.15rem + 0.7vw, 1.75rem);
  --step-2:             clamp(1.7rem, 1.4rem + 1.5vw, 2.8rem);
  --step-3:             clamp(2.2rem, 1.6rem + 3vw, 4.5rem);

  /* --- 6. Strict 2-Value Radius & Elevation System --- */
  --radius-sm:          6px;       /* Buttons, inputs, small tags */
  --radius-md:          14px;      /* Cards, modals, containers */

  --transition-fast:    0.2s cubic-bezier(0.4, 0, 0.2, 1);
  --transition:         0.3s cubic-bezier(0.4, 0, 0.2, 1);
  --transition-slow:    0.5s cubic-bezier(0.4, 0, 0.2, 1);

  --shadow-1:           0 2px 8px rgba(var(--brand-rgb), 0.04);
  --shadow-2:           0 12px 32px rgba(var(--brand-rgb), 0.08);
  --shadow-wa:          0 8px 24px rgba(var(--wa-rgb), 0.35);

  --section-py:         clamp(3.5rem, 6vw, 6.5rem);
}

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

html {
  font-size: 16px;
  background-color: var(--surface);
  color: var(--ink);
  font-family: var(--font-body);
  -webkit-font-smoothing: antialiased;
  -moz-osx-font-smoothing: grayscale;
  overflow-x: hidden;
}

body {
  background-color: var(--surface);
  color: var(--ink);
  font-family: var(--font-body);
  font-size: var(--step-0);
  line-height: 1.6;
  overflow-x: hidden;
  position: relative;
}

h1, h2, h3, h4, h5, h6 {
  font-family: var(--font-display);
  color: var(--ink);
  font-weight: 700;
  line-height: 1.15;
  letter-spacing: -0.02em;
}

p {
  color: var(--ink-60);
}

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

a:hover {
  color: var(--brand-shade-40);
}

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

/* Typography Utilities */
.text-urdu {
  font-family: var(--font-urdu);
  line-height: 2.1;
}

.text-brand {
  color: var(--brand) !important;
}

.text-brand-tint {
  color: var(--brand-tint-40) !important;
}

.text-wa {
  color: var(--wa) !important;
}

.text-gold {
  color: var(--gold) !important;
}

.bg-surface {
  background-color: var(--surface);
}

.bg-surface-subtle {
  background-color: var(--surface-subtle);
}

.bg-brand-dark {
  background-color: var(--brand-shade-80) !important;
}

.section-wrap {
  padding: var(--section-py) 0;
  border-bottom: 1px solid var(--line);
  position: relative;
}

/* ==========================================================================
   Section Header Component
   ========================================================================== */
.section-header {
  max-width: 700px;
  margin-left: auto;
  margin-right: auto;
  margin-bottom: 3rem;
  text-align: center;
}

.section-header__tag {
  display: inline-flex;
  align-items: center;
  gap: 0.5rem;
  font-size: 0.75rem;
  font-weight: 700;
  letter-spacing: 0.1em;
  text-transform: uppercase;
  color: var(--brand);
  background: var(--brand-tint-90);
  border: 1px solid var(--brand-tint-80);
  padding: 0.3rem 0.8rem;
  border-radius: var(--radius-sm);
  margin-bottom: 0.75rem;
}

.section-header__title {
  font-size: var(--step-2);
  font-weight: 800;
  line-height: 1.12;
  letter-spacing: -0.025em;
  color: var(--ink);
  margin-bottom: 0.5rem;
}

.section-header__title span {
  color: var(--brand);
  position: relative;
}

.section-header__subtitle {
  font-size: var(--step--1);
  color: var(--ink-60);
  line-height: 1.6;
}

/* ==========================================================================
   BEM Component: Buttons & Action Controls
   ========================================================================== */
.btn-opt {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: 0.5rem;
  font-family: var(--font-body);
  font-size: var(--step--1);
  font-weight: 600;
  padding: 0.7rem 1.4rem;
  border-radius: var(--radius-sm);
  border: 1px solid transparent;
  cursor: pointer;
  text-decoration: none;
  transition: background-color var(--transition-fast), border-color var(--transition-fast), color var(--transition-fast), transform var(--transition-fast), box-shadow var(--transition-fast);
  user-select: none;
  white-space: nowrap;
}

.btn-opt:focus-visible {
  outline: 2px solid var(--brand);
  outline-offset: 3px;
}

.btn-opt:active {
  transform: translateY(1px);
}

.btn-opt--brand {
  background-color: var(--brand);
  color: #ffffff !important;
  border-color: var(--brand);
}

.btn-opt--brand:hover {
  background-color: var(--brand-shade-40);
  border-color: var(--brand-shade-40);
  transform: translateY(-2px);
  box-shadow: var(--shadow-1);
}

.btn-opt--outline {
  background-color: transparent;
  color: var(--ink) !important;
  border-color: var(--line);
}

.btn-opt--outline:hover {
  background-color: var(--surface-raised);
  border-color: var(--brand);
  color: var(--brand) !important;
  transform: translateY(-2px);
  box-shadow: var(--shadow-1);
}

.btn-opt--outline-light {
  background-color: transparent;
  color: #ffffff !important;
  border-color: rgba(255, 255, 255, 0.9);
  border-width: 1.5px;
}

.btn-opt--outline-light:hover {
  background-color: #ffffff;
  border-color: #ffffff;
  color: var(--brand-shade-80) !important;
  transform: translateY(-2px);
  box-shadow: 0 6px 20px rgba(0, 0, 0, 0.3);
}

.btn-opt--wa {
  background-color: var(--wa);
  color: #ffffff !important;
  border-color: var(--wa);
  font-weight: 700;
}

.btn-opt--wa:hover {
  background-color: var(--wa-dark);
  border-color: var(--wa-dark);
  color: #ffffff !important;
  transform: translateY(-2px);
  box-shadow: var(--shadow-wa);
}

.btn-opt--ghost {
  background-color: transparent;
  color: var(--ink-60) !important;
  border-color: transparent;
}

.btn-opt--ghost:hover {
  color: var(--brand) !important;
  background-color: var(--brand-tint-90);
  border-color: var(--brand-tint-80);
}

.btn-opt--sm {
  padding: 0.45rem 0.9rem;
  font-size: 0.82rem;
}

.btn-opt--lg {
  padding: 0.9rem 1.8rem;
  font-size: 1.05rem;
  font-weight: 700;
}

.btn-opt--full {
  width: 100%;
}

/* ==========================================================================
   BEM Component: Header & Navigation
   ========================================================================== */
.site-topbar {
  background: var(--brand-shade-80);
  color: #A3B3AC;
  font-size: 0.82rem;
  padding: 0.45rem 0;
  border-bottom: 1px solid var(--line-dark);
}

.site-topbar__link {
  color: #ffffff;
  transition: color var(--transition-fast);
}

.site-topbar__link:hover {
  color: var(--wa);
}

.badge-optical {
  background: rgba(31, 61, 51, 0.6);
  color: #92DFBD;
  border: 1px solid rgba(146, 223, 189, 0.2);
  border-radius: var(--radius-sm);
  font-weight: 600;
  display: inline-flex;
  align-items: center;
}

.site-header {
  background: var(--surface);
  border-bottom: 1px solid var(--line);
  position: sticky;
  top: 0;
  z-index: 1020;
  transition: background-color var(--transition), box-shadow var(--transition);
}

.site-header--scrolled {
  background: rgba(244, 241, 236, 0.95);
  backdrop-filter: blur(12px);
  -webkit-backdrop-filter: blur(12px);
  box-shadow: 0 4px 20px rgba(0, 0, 0, 0.05);
}

.site-nav__brand {
  display: flex;
  align-items: center;
  gap: 0.65rem;
  text-decoration: none;
}

.site-nav__brand-icon {
  width: 40px;
  height: 40px;
  background: var(--brand);
  color: #ffffff;
  border-radius: var(--radius-sm);
  display: flex;
  align-items: center;
  justify-content: center;
  transition: transform var(--transition-fast);
}

.site-nav__brand:hover .site-nav__brand-icon {
  transform: rotate(-6deg) scale(1.05);
}

.site-nav__brand-title {
  font-family: var(--font-display);
  font-size: 1.25rem;
  font-weight: 800;
  color: var(--ink);
  line-height: 1.1;
  letter-spacing: -0.02em;
}

.site-nav__brand-sub {
  font-size: 0.68rem;
  font-weight: 700;
  letter-spacing: 0.12em;
  text-transform: uppercase;
  color: var(--brand);
}

/* Nav Link Underline with transform-origin switch */
.site-nav__link {
  font-size: var(--step--1);
  font-weight: 600;
  color: var(--ink-60) !important;
  padding: 0.5rem 0.75rem !important;
  position: relative;
  transition: color var(--transition);
}

.site-nav__link::after {
  content: '';
  position: absolute;
  bottom: 0;
  left: 0.75rem;
  right: 0.75rem;
  height: 2px;
  background: var(--brand);
  transform: scaleX(0);
  transform-origin: right;
  transition: transform var(--transition);
}

.site-nav__link:hover,
.site-nav__link.active {
  color: var(--brand) !important;
}

.site-nav__link:hover::after,
.site-nav__link.active::after {
  transform: scaleX(1);
  transform-origin: left;
}

/* Scroll progress line */
.scroll-progress-line {
  position: absolute;
  bottom: -1px;
  left: 0;
  width: 0%;
  height: 2.5px;
  background: var(--brand);
  transition: width 0.08s linear;
}

/* ==========================================================================
   BEM Component: Hero Section
   ========================================================================== */
.hero {
  padding: clamp(3.5rem, 6vw, 6.5rem) 0;
  border-bottom: 1px solid var(--line);
  position: relative;
  overflow: hidden;
  background-color: var(--surface);
}

.hero__eyebrow {
  display: inline-flex;
  align-items: center;
  gap: 0.5rem;
  background: var(--surface-raised);
  border: 1px solid var(--line);
  padding: 0.35rem 0.85rem;
  border-radius: var(--radius-sm);
  font-size: 0.8rem;
  font-weight: 700;
  color: var(--ink);
  margin-bottom: 1rem;
}

.hero__title {
  font-family: var(--font-display);
  font-size: var(--step-3);
  font-weight: 800;
  line-height: 0.98;
  letter-spacing: -0.035em;
  color: var(--ink);
  margin-bottom: 1rem;
}

.hero__title span {
  color: var(--brand);
}

.hero__lead {
  font-size: var(--step-0);
  line-height: 1.6;
  color: var(--ink-60);
  max-width: 580px;
  margin-bottom: 1.5rem;
}

.hero__stats {
  display: flex;
  gap: 2rem;
  margin-top: 1.5rem;
  padding-top: 1.5rem;
  border-top: 1px solid var(--line);
}

.hero__stat-num {
  font-family: var(--font-display);
  font-size: var(--step-1);
  font-weight: 800;
  color: var(--ink);
  line-height: 1;
  margin-bottom: 0.25rem;
}

.hero__stat-label {
  font-size: 0.78rem;
  color: var(--ink-40);
  font-weight: 600;
}

/* Hero 3-Layer Visual Stage */
.hero__stage {
  perspective: 1000px;
  position: relative;
}

.hero__card {
  background: var(--surface-raised);
  border: 1px solid var(--line);
  border-radius: var(--radius-md);
  padding: 2.5rem 1.5rem;
  position: relative;
  box-shadow: var(--shadow-2);
  transition: transform var(--transition);
}

.hero__img {
  max-height: 360px;
  margin: 0 auto;
  object-fit: contain;
  filter: drop-shadow(0 15px 25px rgba(0, 0, 0, 0.08));
  transition: transform 0.4s ease;
}

.hero__card:hover .hero__img {
  transform: scale(1.04);
}

.hero__float-tag {
  position: absolute;
  background: var(--surface-raised);
  border: 1px solid var(--line);
  border-radius: var(--radius-sm);
  padding: 0.5rem 0.85rem;
  display: inline-flex;
  align-items: center;
  gap: 0.5rem;
  font-size: 0.78rem;
  font-weight: 700;
  box-shadow: var(--shadow-1);
  z-index: 10;
  white-space: nowrap;
  transition: transform var(--transition);
}

.hero__float-tag--top {
  top: -14px;
  right: 14px;
}

.hero__float-tag--bottom {
  bottom: -14px;
  left: 14px;
}

.hero__card:hover .hero__float-tag--top {
  transform: translateY(-3px);
}

.hero__card:hover .hero__float-tag--bottom {
  transform: translateY(3px);
}

/* ==========================================================================
   BEM Component: Product Card (Eyewear Catalog)
   ========================================================================== */
.product-grid-tabs {
  display: flex;
  justify-content: center;
  flex-wrap: wrap;
  gap: 0.5rem;
  margin-bottom: 2.5rem;
}

.product-tab {
  background: var(--surface-raised);
  border: 1px solid var(--line);
  border-radius: var(--radius-sm);
  padding: 0.5rem 1.1rem;
  font-size: var(--step--1);
  font-weight: 600;
  color: var(--ink-60);
  cursor: pointer;
  display: inline-flex;
  align-items: center;
  gap: 0.4rem;
  transition: all var(--transition-fast);
}

.product-tab:hover {
  border-color: var(--brand);
  color: var(--ink);
  transform: translateY(-1px);
}

.product-tab.active {
  background: var(--brand);
  border-color: var(--brand);
  color: #ffffff;
}

.product-card {
  background: var(--surface-raised);
  border: 1px solid var(--line);
  border-radius: var(--radius-md);
  overflow: hidden;
  height: 100%;
  display: flex;
  flex-direction: column;
  transition: border-color var(--transition), box-shadow var(--transition), transform var(--transition);
}

.product-card:hover {
  border-color: var(--brand);
  box-shadow: var(--shadow-2);
  transform: translateY(-4px);
}

.product-card:focus-within {
  outline: 2px solid var(--brand);
  outline-offset: 3px;
}

.product-card__media {
  background: #FAF8F5;
  aspect-ratio: 4 / 3;
  display: flex;
  align-items: center;
  justify-content: center;
  padding: 1.25rem;
  position: relative;
  border-bottom: 1px solid var(--line);
  overflow: hidden;
}

.product-card__img {
  max-height: 140px;
  width: auto;
  object-fit: contain;
  transition: transform 0.4s ease;
}

.product-card:hover .product-card__img {
  transform: scale(1.08);
}

.product-card__badge {
  position: absolute;
  top: 0.65rem;
  left: 0.65rem;
  background: var(--brand-shade-80);
  color: #ffffff;
  font-size: 0.68rem;
  font-weight: 700;
  letter-spacing: 0.05em;
  text-transform: uppercase;
  padding: 0.25rem 0.55rem;
  border-radius: var(--radius-sm);
  z-index: 2;
}

.product-card__quick-view {
  position: absolute;
  top: 0.65rem;
  right: 0.65rem;
  width: 30px;
  height: 30px;
  border-radius: var(--radius-sm);
  background: var(--surface-raised);
  border: 1px solid var(--line);
  display: flex;
  align-items: center;
  justify-content: center;
  cursor: pointer;
  transition: all var(--transition-fast);
  z-index: 2;
}

.product-card__quick-view:hover {
  background: var(--brand);
  border-color: var(--brand);
  color: #ffffff;
  transform: scale(1.1);
}

.product-card__quick-view:hover svg {
  stroke: #ffffff;
}

.product-card__body {
  padding: 1rem;
  display: flex;
  flex-direction: column;
  flex-grow: 1;
}

.product-card__meta {
  display: flex;
  justify-content: space-between;
  align-items: center;
  margin-bottom: 0.35rem;
}

.product-card__category {
  font-size: 0.72rem;
  font-weight: 700;
  text-transform: uppercase;
  letter-spacing: 0.06em;
  color: var(--brand);
}

.product-card__rating {
  font-size: 0.75rem;
  font-weight: 700;
  color: var(--gold);
  display: inline-flex;
  align-items: center;
  gap: 0.25rem;
}

.product-card__title {
  font-family: var(--font-display);
  font-size: 0.98rem;
  font-weight: 700;
  color: var(--ink);
  line-height: 1.25;
  margin-bottom: 0.25rem;
  display: -webkit-box;
  -webkit-line-clamp: 1;
  -webkit-box-orient: vertical;
  overflow: hidden;
}

.product-card__material {
  font-size: 0.75rem;
  color: var(--ink-40);
  margin-bottom: 0.6rem;
  white-space: nowrap;
  overflow: hidden;
  text-overflow: ellipsis;
}

.product-card__colors {
  display: flex;
  align-items: center;
  gap: 0.4rem;
  margin-bottom: 0.75rem;
}

.product-card__color-label {
  font-size: 0.7rem;
  color: var(--ink-40);
}

.color-swatch {
  width: 14px;
  height: 14px;
  border-radius: 50%;
  border: 1.5px solid var(--line);
  cursor: pointer;
  display: inline-block;
  transition: transform var(--transition-fast), border-color var(--transition-fast);
}

.color-swatch.active,
.color-swatch:hover {
  transform: scale(1.35);
  border-color: var(--ink);
}

.product-card__price-row {
  display: flex;
  align-items: baseline;
  gap: 0.4rem;
  margin-bottom: 0.85rem;
  margin-top: auto;
}

.product-card__price-current {
  font-family: var(--font-display);
  font-weight: 800;
  font-size: 1.1rem;
  color: var(--ink);
}

.product-card__price-old {
  font-size: 0.78rem;
  color: var(--ink-40);
  text-decoration: line-through;
}

.product-card__actions {
  margin-top: auto;
}

/* Prescription photo banner */
.prescription-card {
  background: var(--surface-raised);
  border: 1px solid var(--line);
  border-radius: var(--radius-md);
  padding: clamp(1.25rem, 3vw, 2rem);
  box-shadow: var(--shadow-1);
}

.prescription-card__icon {
  width: 54px;
  height: 54px;
  border-radius: var(--radius-sm);
  background: var(--brand-tint-90);
  display: flex;
  align-items: center;
  justify-content: center;
}

/* ==========================================================================
   BEM Component: Clinical Services Card
   ========================================================================== */
.service-card {
  background: var(--surface-raised);
  border: 1px solid var(--line);
  border-radius: var(--radius-md);
  padding: 1.75rem;
  height: 100%;
  display: flex;
  flex-direction: column;
  transition: border-color var(--transition), transform var(--transition), box-shadow var(--transition);
}

.service-card:hover {
  border-color: var(--brand);
  transform: translateY(-4px);
  box-shadow: var(--shadow-2);
}

.service-card:focus-within {
  outline: 2px solid var(--brand);
  outline-offset: 3px;
}

.service-card__head {
  display: flex;
  justify-content: space-between;
  align-items: center;
  margin-bottom: 1.25rem;
}

.service-card__icon {
  width: 48px;
  height: 48px;
  border-radius: var(--radius-sm);
  background: var(--brand-tint-90);
  display: flex;
  align-items: center;
  justify-content: center;
  transition: transform var(--transition-fast), background-color var(--transition-fast);
}

.service-card:hover .service-card__icon {
  transform: scale(1.08);
  background-color: var(--brand-tint-80);
}

.service-card__tag {
  font-size: 0.72rem;
  font-weight: 700;
  color: var(--ink-60);
  background: var(--surface);
  border: 1px solid var(--line);
  padding: 0.25rem 0.6rem;
  border-radius: var(--radius-sm);
}

.service-card__title {
  font-size: 1.15rem;
  font-weight: 700;
  color: var(--ink);
  margin-bottom: 0.25rem;
}

.service-card__urdu {
  font-family: var(--font-urdu);
  color: var(--brand);
  font-size: 0.92rem;
  font-weight: 700;
  margin-bottom: 0.5rem;
}

.service-card__desc {
  font-size: 0.85rem;
  color: var(--ink-60);
  line-height: 1.55;
  margin-bottom: 1.5rem;
}

.service-card__footer {
  display: flex;
  align-items: center;
  justify-content: space-between;
  margin-top: auto;
  padding-top: 1rem;
  border-top: 1px solid var(--line);
}

.service-card__highlight {
  font-size: 0.78rem;
  font-weight: 600;
  color: var(--color-success);
  display: inline-flex;
  align-items: center;
  gap: 0.35rem;
}

.service-card__link {
  font-size: 0.82rem;
  font-weight: 700;
  color: var(--brand);
  display: inline-flex;
  align-items: center;
  gap: 0.25rem;
  border: none;
  background: transparent;
  cursor: pointer;
  transition: gap var(--transition-fast);
}

.service-card__link:hover {
  gap: 0.45rem;
  color: var(--brand-shade-40);
}

/* Clinic Dark Promo Banner */
.clinic-promo {
  background: var(--brand-shade-80);
  border: 1px solid var(--line-dark);
  border-radius: var(--radius-md);
  color: #ffffff;
  padding: clamp(2rem, 4vw, 3.5rem);
}

.clinic-promo__tag {
  background: rgba(30, 130, 76, 0.35);
  color: #85E3B3;
  border: 1px solid rgba(133, 227, 179, 0.3);
  font-size: 0.78rem;
  font-weight: 700;
  padding: 0.3rem 0.75rem;
  border-radius: var(--radius-sm);
  display: inline-flex;
  align-items: center;
  gap: 0.4rem;
  margin-bottom: 1rem;
}

.clinic-promo__title {
  font-size: var(--step-2);
  color: #ffffff;
  font-weight: 800;
  line-height: 1.1;
  margin-bottom: 0.75rem;
}

.clinic-promo__title span {
  color: #88C4B0;
}

.clinic-promo__lead {
  color: #A3B8B0;
  font-size: 0.95rem;
  line-height: 1.6;
  margin-bottom: 1.5rem;
}

/* ==========================================================================
   BEM Component: Frame Finder (Quiz)
   ========================================================================== */
.quiz-box {
  max-width: 840px;
  margin-left: auto;
  margin-right: auto;
  background: var(--surface-raised);
  border: 1px solid var(--line);
  border-radius: var(--radius-md);
  padding: clamp(1.5rem, 3.5vw, 2.75rem);
  box-shadow: var(--shadow-1);
}

.quiz-steps-nav {
  display: flex;
  justify-content: center;
  gap: 1rem;
  margin-bottom: 2rem;
  padding-bottom: 1.25rem;
  border-bottom: 1px solid var(--line);
}

.quiz-step-btn {
  background: transparent;
  border: 1px solid var(--line);
  border-radius: var(--radius-sm);
  padding: 0.45rem 1rem;
  font-size: var(--step--1);
  font-weight: 600;
  color: var(--ink-60);
  cursor: pointer;
  display: inline-flex;
  align-items: center;
  gap: 0.5rem;
  transition: all var(--transition-fast);
}

.quiz-step-btn.active {
  background: var(--brand);
  color: #ffffff;
  border-color: var(--brand);
}

.quiz-step-num {
  width: 20px;
  height: 20px;
  border-radius: 50%;
  background: rgba(0, 0, 0, 0.08);
  display: inline-flex;
  align-items: center;
  justify-content: center;
  font-size: 0.72rem;
}

.quiz-step-btn.active .quiz-step-num {
  background: rgba(255, 255, 255, 0.25);
  color: #ffffff;
}

.quiz-choice {
  background: var(--surface);
  border: 1px solid var(--line);
  border-radius: var(--radius-sm);
  padding: 1.25rem 1rem;
  text-align: center;
  cursor: pointer;
  transition: border-color var(--transition-fast), background-color var(--transition-fast), transform var(--transition-fast);
  user-select: none;
  height: 100%;
}

.quiz-choice:hover {
  border-color: var(--brand);
  background: var(--surface-raised);
  transform: translateY(-2px);
}

.quiz-choice.selected {
  border-color: var(--brand);
  background: var(--brand-tint-90);
  outline: 2px solid var(--brand);
}

.quiz-result-card {
  background: var(--surface-raised);
  border: 2px solid var(--brand);
  border-radius: var(--radius-md);
  padding: 1.5rem;
  box-shadow: var(--shadow-2);
  margin-top: 2rem;
}

/* ==========================================================================
   BEM Component: Why Us Pillars & Lens Simulation
   ========================================================================== */
.pillar-card {
  background: var(--surface-raised);
  border: 1px solid var(--line);
  border-radius: var(--radius-md);
  padding: 1.75rem;
  text-align: center;
  height: 100%;
  transition: border-color var(--transition), transform var(--transition);
}

.pillar-card:hover {
  border-color: var(--brand);
  transform: translateY(-3px);
}

.pillar-card__icon {
  width: 56px;
  height: 56px;
  border-radius: var(--radius-sm);
  background: var(--brand-tint-90);
  display: inline-flex;
  align-items: center;
  justify-content: center;
  margin-bottom: 1rem;
  transition: transform var(--transition-fast);
}

.pillar-card:hover .pillar-card__icon {
  transform: scale(1.1);
}

.pillar-card__title {
  font-size: 1.05rem;
  font-weight: 700;
  color: var(--ink);
  margin-bottom: 0.5rem;
}

.pillar-card__desc {
  font-size: 0.84rem;
  color: var(--ink-60);
  line-height: 1.5;
}

/* Interactive Lens Simulation Component */
.lens-sim-box {
  background: var(--surface-raised);
  border: 1px solid var(--line);
  border-radius: var(--radius-md);
  padding: clamp(1.5rem, 3.5vw, 3rem);
}

.lens-tab {
  background: var(--surface);
  border: 1px solid var(--line);
  border-radius: var(--radius-sm);
  padding: 1rem 1.25rem;
  display: flex;
  align-items: flex-start;
  gap: 1rem;
  cursor: pointer;
  transition: all var(--transition-fast);
}

.lens-tab:hover {
  border-color: var(--brand);
  background: var(--surface-raised);
}

.lens-tab.active {
  background: var(--brand-tint-90);
  border-color: var(--brand);
  border-left-width: 4px;
}

.lens-tab__icon {
  width: 38px;
  height: 38px;
  border-radius: var(--radius-sm);
  background: var(--surface-raised);
  border: 1px solid var(--line);
  display: flex;
  align-items: center;
  justify-content: center;
  flex-shrink: 0;
}

.lens-stage {
  background: var(--surface);
  border: 1px solid var(--line);
  border-radius: var(--radius-md);
  padding: 2rem;
  text-align: center;
}

.lens-frame {
  width: 220px;
  height: 220px;
  border-radius: 50%;
  border: 8px solid var(--ink);
  background: #E8EEEC;
  margin: 0 auto;
  position: relative;
  overflow: hidden;
  box-shadow: 0 12px 30px rgba(0, 0, 0, 0.12), inset 0 0 20px rgba(255, 255, 255, 0.8);
}

/* ==========================================================================
   BEM Component: Testimonials Carousel
   ========================================================================== */
.testimonial-card {
  background: var(--surface-raised);
  border: 1px solid var(--line);
  border-radius: var(--radius-md);
  padding: 1.75rem;
  height: 100%;
  display: flex;
  flex-direction: column;
  transition: border-color var(--transition), box-shadow var(--transition);
}

.testimonial-card:hover {
  border-color: var(--brand);
  box-shadow: var(--shadow-2);
}

.testimonial-card__head {
  display: flex;
  justify-content: space-between;
  align-items: center;
  margin-bottom: 1rem;
}

.testimonial-card__stars {
  display: flex;
  gap: 0.2rem;
  color: var(--gold);
}

.testimonial-card__tag {
  font-size: 0.72rem;
  color: var(--ink-60);
  background: var(--surface);
  border: 1px solid var(--line);
  padding: 0.2rem 0.5rem;
  border-radius: var(--radius-sm);
}

.testimonial-card__comment {
  font-size: 0.9rem;
  font-style: italic;
  color: var(--ink-60);
  line-height: 1.6;
  margin-bottom: 1.5rem;
  flex-grow: 1;
}

.testimonial-card__author {
  display: flex;
  align-items: center;
  gap: 0.85rem;
  padding-top: 1rem;
  border-top: 1px solid var(--line);
  margin-top: auto;
}

.testimonial-card__avatar {
  width: 46px;
  height: 46px;
  border-radius: 50%;
  border: 1px solid var(--line);
  object-fit: cover;
}

.testimonial-card__name {
  font-size: 0.92rem;
  font-weight: 700;
  color: var(--ink);
  margin-bottom: 0.1rem;
}

.testimonial-card__role {
  font-size: 0.75rem;
  color: var(--ink-40);
}

/* ==========================================================================
   BEM Component: FAQ Accordion
   ========================================================================== */
.faq-wrap {
  max-width: 780px;
  margin: 0 auto;
}

.faq-item {
  background: var(--surface-raised);
  border: 1px solid var(--line);
  border-radius: var(--radius-sm);
  margin-bottom: 0.75rem;
  overflow: hidden;
  transition: border-color var(--transition-fast);
}

.faq-item:hover {
  border-color: var(--brand-tint-60);
}

.faq-trigger {
  width: 100%;
  background: transparent;
  border: none;
  padding: 1.15rem 1.35rem;
  display: flex;
  align-items: center;
  justify-content: space-between;
  font-family: var(--font-display);
  font-size: 1rem;
  font-weight: 700;
  color: var(--ink);
  text-align: left;
  cursor: pointer;
  transition: background-color var(--transition-fast);
}

.faq-trigger:hover {
  background-color: var(--surface-subtle);
}

.faq-trigger svg {
  transition: transform var(--transition);
}

.faq-trigger:not(.collapsed) svg {
  transform: rotate(90deg);
}

.faq-body {
  padding: 0 1.35rem 1.25rem 1.35rem;
  font-size: 0.88rem;
  color: var(--ink-60);
  line-height: 1.6;
}

/* ==========================================================================
   BEM Component: Location & Map
   ========================================================================== */
.location-card {
  background: var(--surface-raised);
  border: 1px solid var(--line);
  border-radius: var(--radius-md);
  padding: clamp(1.5rem, 3.5vw, 2.75rem);
}

.badge-opt-pill {
  display: inline-block;
  background: var(--brand-tint-90);
  color: var(--brand-shade-60);
  border: 1px solid var(--brand-tint-80);
  font-size: 0.76rem;
  font-weight: 700;
  padding: 0.25rem 0.65rem;
  border-radius: var(--radius-sm);
}

.badge-opt-pill--success {
  background: var(--wa-tint-90);
  color: var(--color-success);
  border-color: rgba(37, 211, 102, 0.4);
}

.map-card {
  background: var(--brand-shade-80);
  border: 1px solid var(--line-dark);
  border-radius: var(--radius-md);
  min-height: 380px;
  display: flex;
  flex-direction: column;
  justify-content: center;
  text-align: center;
  padding: 2rem;
}

/* ==========================================================================
   BEM Component: Modals & Bottom Sheet
   ========================================================================== */
.modal-optical {
  background: var(--surface-raised);
  border: 1px solid var(--line);
  border-radius: var(--radius-md);
  box-shadow: 0 20px 50px rgba(0, 0, 0, 0.15);
}

.form-control-opt {
  background: var(--surface);
  border: 1px solid var(--line);
  border-radius: var(--radius-sm);
  font-size: 0.88rem;
  padding: 0.65rem 0.85rem;
  width: 100%;
  color: var(--ink);
  transition: border-color var(--transition-fast), box-shadow var(--transition-fast);
}

.form-control-opt:focus {
  background: #ffffff;
  border-color: var(--brand);
  outline: none;
  box-shadow: 0 0 0 3px var(--brand-tint-90);
}

/* ==========================================================================
   BEM Component: Floating WhatsApp & Mobile Sticky Bar
   ========================================================================== */
.wa-float {
  position: fixed !important;
  bottom: 2rem;
  right: 1.5rem;
  z-index: 1050;
}

.whatsapp-bubble {
  position: absolute;
  bottom: 70px;
  right: 0;
  width: 280px;
  background: var(--surface-raised);
  border: 1px solid var(--line);
  border-radius: var(--radius-md);
  padding: 1rem;
  box-shadow: var(--shadow-2);
  display: none;
}

.whatsapp-bubble.show {
  display: block;
}

.btn-bubble-close {
  background: transparent;
  border: none;
  color: var(--ink-40);
  font-size: 1.25rem;
  line-height: 1;
  cursor: pointer;
  padding: 0 0.2rem;
  transition: color var(--transition-fast);
}

.btn-bubble-close:hover {
  color: var(--ink);
}

.bubble-text {
  font-size: 0.78rem;
  color: var(--ink-60);
  line-height: 1.35;
}

.btn-bubble-action {
  font-size: 0.72rem;
  font-weight: 700;
  color: var(--wa-dark);
}

.badge-online-dot {
  font-size: 0.68rem;
  font-weight: 700;
  color: var(--color-success);
}

.wa-btn {
  width: 56px;
  height: 56px;
  border-radius: 50%;
  background: var(--wa);
  display: flex;
  align-items: center;
  justify-content: center;
  box-shadow: var(--shadow-wa);
  cursor: pointer;
  position: relative;
  transition: transform var(--transition-fast);
}

.wa-btn:hover {
  transform: scale(1.1);
}

.mobile-bar {
  background: var(--surface-raised);
  border-top: 1px solid var(--line);
  box-shadow: 0 -4px 15px rgba(0, 0, 0, 0.05);
  z-index: 1030;
  padding: 0.35rem 0;
}

.mobile-bar__link {
  display: flex;
  flex-direction: column;
  align-items: center;
  justify-content: center;
  color: var(--ink-60);
  text-decoration: none;
  min-height: 48px;
  transition: color var(--transition-fast);
}

.mobile-bar__link:hover,
.mobile-bar__link.active {
  color: var(--brand);
}

/* ==========================================================================
   BEM Component: Site Footer
   ========================================================================== */
.site-footer {
  background: var(--brand-shade-80);
  color: #ffffff;
  border-top: 1px solid var(--line-dark);
  padding: 4rem 0 2rem 0;
}

.site-footer__link {
  color: #A3B8B0;
  font-size: 0.82rem;
  text-decoration: none;
  transition: color var(--transition-fast), padding-left var(--transition-fast);
}

.site-footer__link:hover {
  color: #ffffff;
  padding-left: 3px;
}

.footer-social-btn {
  width: 36px;
  height: 36px;
  border-radius: 50%;
  background: var(--brand-shade-60);
  border: 1px solid var(--line-dark);
  color: #A3B8B0;
  display: inline-flex;
  align-items: center;
  justify-content: center;
  transition: all var(--transition-fast);
}

.footer-social-btn:hover {
  background: var(--brand);
  color: #ffffff;
  border-color: var(--brand);
  transform: translateY(-2px);
}

.footer-social-btn.active-wa:hover {
  background: var(--wa);
  border-color: var(--wa);
}