:root {
  --opti-canvas-base: #f7f9f8;
  --opti-surface-cloud: #ffffff;
  --opti-surface-mint: #eaf4f0;
  --opti-shade-deep: #122421;
  --opti-teal-accent: #1e7d70;
  --opti-teal-hover: #166258;
  --opti-amber-bright: #e07a5f;
  --opti-glow-soft: rgba(30, 125, 112, 0.12);
  --opti-text-dark: #1b2624;
  --opti-text-subtle: #4a5d58;
  --opti-gradient-hero: linear-gradient(135deg, #eaf4f0 0%, #f7f9f8 50%, #f0f7f3 100%);
  --opti-gradient-banner: linear-gradient(135deg, #1e7d70 0%, #122421 100%);

  --font-display: 'Montserrat', sans-serif;
  --font-body: 'Open Sans', sans-serif;
}

/* Base Reset & Typography */
* {
  box-sizing: border-box;
  margin: 0;
  padding: 0;
}

html {
  scroll-behavior: smooth;
  font-family: var(--font-body);
  background-color: var(--opti-canvas-base);
  color: var(--opti-text-dark);
  line-height: 1.6;
}

body.sight-page-body {
  min-height: 100vh;
  display: flex;
  flex-direction: column;
}

main {
  flex: 1;
}

/* Scroll-driven animations fallback & timeline */
@keyframes opticProgressAnim {
  from { width: 0%; }
  to { width: 100%; }
}

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

/* Shared Containers */
.pupil-nav-holder {
  max-width: 1200px;
  margin: 0 auto;
  padding: 0 24px;
  width: 100%;
}

/* Header & Nav Preset N */
.ocular-top-nav {
  position: sticky;
  top: 0;
  z-index: 1000;
  background: rgba(255, 255, 255, 0.92);
  backdrop-filter: blur(12px);
  border-bottom: 1px solid rgba(30, 125, 112, 0.1);
}

.iris-nav-progress {
  height: 4px;
  background: var(--opti-amber-bright);
  width: 0%;
  animation: opticProgressAnim linear;
  animation-timeline: scroll();
}

.ocular-top-nav .pupil-nav-holder {
  display: flex;
  align-items: center;
  justify-content: space-between;
  height: 80px;
}

.focus-brand-link {
  display: flex;
  align-items: center;
  gap: 12px;
  text-decoration: none;
  color: var(--opti-text-dark);
}

.focus-logo-blob {
  width: 44px;
  height: 44px;
  background: var(--opti-surface-mint);
  color: var(--opti-teal-accent);
  display: flex;
  align-items: center;
  justify-content: center;
  border-radius: 50% 50% 50% 50% / 60% 40% 60% 40%;
  box-shadow: 0 4px 12px var(--opti-glow-soft);
}

.focus-brand-text {
  font-family: var(--font-display);
  font-weight: 700;
  font-size: 1.25rem;
  color: var(--opti-shade-deep);
}

.retina-menu-links {
  display: flex;
  align-items: center;
  gap: 28px;
}

.retina-link {
  text-decoration: none;
  color: var(--opti-text-subtle);
  font-weight: 600;
  font-size: 0.95rem;
  transition: color 0.3s ease;
}

.retina-link:hover,
.retina-link-active {
  color: var(--opti-teal-accent);
}

.retina-cta-pill {
  background: var(--opti-teal-accent);
  color: #ffffff !important;
  padding: 10px 22px;
  border-radius: 999px;
  box-shadow: 0 4px 14px var(--opti-glow-soft);
  transition: all 0.3s ease;
}

.retina-cta-pill:hover {
  background: var(--opti-teal-hover);
  transform: translateY(-2px);
}

/* Mobile Hamburger CSS Only */
.optic-burger-checkbox {
  display: none;
}

.optic-burger-button {
  display: none;
  flex-direction: column;
  gap: 5px;
  cursor: pointer;
}

.optic-burger-button span {
  width: 26px;
  height: 3px;
  background-color: var(--opti-shade-deep);
  border-radius: 3px;
  transition: 0.3s ease;
}

@media (max-width: 768px) {
  .optic-burger-button {
    display: flex;
  }

  .retina-menu-links {
    position: absolute;
    top: 80px;
    left: 0;
    right: 0;
    background: #ffffff;
    flex-direction: column;
    padding: 24px;
    gap: 20px;
    border-bottom: 2px solid var(--opti-surface-mint);
    box-shadow: 0 10px 30px rgba(0, 0, 0, 0.08);
    display: none;
  }

  .optic-burger-checkbox:checked ~ .retina-menu-links {
    display: flex;
  }
}

/* UI Elements */
.optic-tag-pill {
  display: inline-block;
  padding: 6px 16px;
  background: var(--opti-surface-mint);
  color: var(--opti-teal-accent);
  border-radius: 999px;
  font-size: 0.85rem;
  font-weight: 700;
  text-transform: uppercase;
  letter-spacing: 0.5px;
  margin-bottom: 16px;
}

.pupil-main-heading {
  font-family: var(--font-display);
  font-size: clamp(2.2rem, 4.5vw, 3.6rem);
  line-height: 1.15;
  color: var(--opti-shade-deep);
  margin-bottom: 20px;
}

.optic-section-title {
  font-family: var(--font-display);
  font-size: clamp(1.8rem, 3.2vw, 2.6rem);
  color: var(--opti-shade-deep);
  margin-bottom: 16px;
}

.sight-lead-paragraph {
  font-size: 1.15rem;
  color: var(--opti-text-subtle);
  margin-bottom: 32px;
  max-width: 600px;
}

.sight-body-text {
  font-size: 1rem;
  color: var(--opti-text-subtle);
  line-height: 1.7;
  margin-bottom: 16px;
}

.sight-primary-btn {
  display: inline-block;
  background: var(--opti-teal-accent);
  color: #ffffff;
  padding: 14px 32px;
  border-radius: 999px;
  text-decoration: none;
  font-weight: 700;
  box-shadow: 0 8px 20px var(--opti-glow-soft);
  transition: all 0.3s ease;
  border: none;
  cursor: pointer;
}

.sight-primary-btn:hover {
  background: var(--opti-teal-hover);
  transform: translateY(-2px);
  box-shadow: 0 12px 24px rgba(30, 125, 112, 0.25);
}

.sight-secondary-btn {
  display: inline-block;
  background: transparent;
  color: var(--opti-teal-accent);
  padding: 14px 28px;
  border-radius: 999px;
  text-decoration: none;
  font-weight: 700;
  border: 2px solid var(--opti-teal-accent);
  transition: all 0.3s ease;
  cursor: pointer;
}

.sight-secondary-btn:hover {
  background: var(--opti-surface-mint);
  transform: translateY(-2px);
}

.focus-action-group {
  display: flex;
  gap: 16px;
  flex-wrap: wrap;
}

/* Preset N Organic Blob Hero Section */
.cornea-hero-split {
  padding: 12dvh 0;
  background: var(--opti-gradient-hero);
  position: relative;
  overflow: hidden;
}

.cornea-hero-canvas {
  max-width: 1200px;
  margin: 0 auto;
  padding: 0 24px;
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 48px;
  align-items: center;
}

.optic-blob-frame {
  width: 100%;
  aspect-ratio: 1/1;
  border-radius: 60% 40% 30% 70% / 60% 30% 70% 40%;
  overflow: hidden;
  box-shadow: 0 20px 40px rgba(0, 0, 0, 0.08);
  background: var(--opti-surface-mint);
  animation: opticFadeUpView 0.8s ease-out;
}

.optic-blob-image {
  width: 100%;
  height: 100%;
  object-fit: cover;
}

@media (max-width: 900px) {
  .cornea-hero-canvas {
    grid-template-columns: 1fr;
    gap: 36px;
  }
}

/* Content Wave Section */
.retina-content-wave {
  padding: 10dvh 0;
  background: var(--opti-surface-cloud);
  animation-timeline: view();
  animation-name: opticFadeUpView;
  animation-fill-mode: both;
}

.iris-split-block {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 56px;
  align-items: center;
}

.optic-ellipse-clip {
  width: 100%;
  max-width: 500px;
  height: 380px;
  clip-path: ellipse(50% 46% at 55% 50%);
  overflow: hidden;
  margin: 0 auto;
}

.optic-ellipse-img {
  width: 100%;
  height: 100%;
  object-fit: cover;
}

@media (max-width: 900px) {
  .iris-split-block {
    grid-template-columns: 1fr;
  }
}

/* Vision Features Section */
.vision-habit-deck {
  padding: 12dvh 0;
  background: var(--opti-canvas-base);
}

.sight-center-header {
  text-align: center;
  max-width: 680px;
  margin: 0 auto 56px auto;
}

.focus-cards-cloud {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(250px, 1fr));
  gap: 28px;
}

.focus-card-item {
  background: var(--opti-surface-cloud);
  padding: 36px 28px;
  border-radius: 24px;
  box-shadow: 0 10px 30px rgba(0, 0, 0, 0.03);
  transition: all 0.4s ease;
  border: 1px solid rgba(0,0,0,0.03);
}

.focus-card-item:hover {
  transform: translateY(-8px);
  box-shadow: 0 16px 40px rgba(30, 125, 112, 0.1);
}

.focus-blob-icon {
  width: 64px;
  height: 64px;
  background: var(--opti-surface-mint);
  color: var(--opti-teal-accent);
  display: flex;
  align-items: center;
  justify-content: center;
  border-radius: 60% 40% 55% 45% / 45% 55% 40% 60%;
  margin-bottom: 24px;
  transition: border-radius 0.6s ease;
}

.focus-card-item:hover .focus-blob-icon {
  border-radius: 40% 60% 45% 55% / 55% 45% 60% 40%;
  background: var(--opti-teal-accent);
  color: #ffffff;
}

.focus-card-title {
  font-family: var(--font-display);
  font-size: 1.25rem;
  color: var(--opti-shade-deep);
  margin-bottom: 12px;
}

.focus-card-desc {
  font-size: 0.95rem;
  color: var(--opti-text-subtle);
  line-height: 1.6;
}

/* How It Works Steps */
.focus-step-flow {
  padding: 10dvh 0;
  background: var(--opti-surface-mint);
}

.focus-steps-chain {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 32px;
  position: relative;
}

.focus-step-node {
  background: var(--opti-surface-cloud);
  padding: 32px;
  border-radius: 24px;
  position: relative;
  box-shadow: 0 8px 24px rgba(0, 0, 0, 0.04);
}

.focus-bubble-number {
  width: 52px;
  height: 52px;
  background: var(--opti-amber-bright);
  color: #ffffff;
  font-family: var(--font-display);
  font-weight: 800;
  font-size: 1.4rem;
  display: flex;
  align-items: center;
  justify-content: center;
  border-radius: 55% 45% 48% 52% / 50% 50% 50% 50%;
  margin-bottom: 20px;
}

.focus-step-heading {
  font-family: var(--font-display);
  font-size: 1.2rem;
  color: var(--opti-shade-deep);
  margin-bottom: 12px;
}

@media (max-width: 850px) {
  .focus-steps-chain {
    grid-template-columns: 1fr;
  }
}

/* Action Banner Strip */
.opti-action-banner {
  padding: 8dvh 0;
  background: var(--opti-canvas-base);
}

.opti-banner-box {
  background: var(--opti-gradient-banner);
  color: #ffffff;
  padding: 56px 40px;
  border-radius: 32px;
  text-align: center;
  clip-path: polygon(0 4%, 100% 0, 100% 96%, 0 100%);
}

.opti-banner-heading {
  font-family: var(--font-display);
  font-size: clamp(1.8rem, 3vw, 2.5rem);
  margin-bottom: 16px;
}

.opti-banner-lead {
  font-size: 1.1rem;
  max-width: 600px;
  margin: 0 auto 32px auto;
  opacity: 0.9;
}

.opti-banner-box .sight-primary-btn {
  background: var(--opti-amber-bright);
}

.opti-banner-box .sight-primary-btn:hover {
  background: #d0694e;
}

/* Metric Stats Deck (Expert Page) */
.sight-metric-deck {
  padding: 6dvh 0;
  background: var(--opti-surface-cloud);
}

.sight-metric-pills-row {
  display: flex;
  justify-content: space-around;
  flex-wrap: wrap;
  gap: 24px;
}

.sight-metric-pill-item {
  background: var(--opti-surface-mint);
  padding: 24px 36px;
  border-radius: 999px;
  text-align: center;
  min-width: 200px;
  box-shadow: 0 6px 20px var(--opti-glow-soft);
}

.sight-metric-number {
  display: block;
  font-family: var(--font-display);
  font-size: 2.2rem;
  font-weight: 800;
  color: var(--opti-teal-accent);
}

.sight-metric-label {
  font-size: 0.9rem;
  color: var(--opti-text-subtle);
  font-weight: 600;
}

/* Pull Quote */
.optic-pull-quote {
  margin: 28px 0;
  padding: 24px 32px;
  border-left: 4px solid var(--opti-teal-accent);
  background: var(--opti-surface-mint);
  border-radius: 0 20px 20px 0;
  font-family: var(--font-display);
  font-style: italic;
  font-size: 1.1rem;
  color: var(--opti-shade-deep);
}

/* Reserve Page Form & Cards */
.reserve-hero-section {
  padding: 8dvh 0 12dvh 0;
}

.reserve-content-grid {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 48px;
  margin-top: 48px;
}

.reserve-feature-card {
  background: var(--opti-surface-cloud);
  padding: 32px;
  border-radius: 24px;
  margin-bottom: 24px;
  box-shadow: 0 8px 24px rgba(0,0,0,0.03);
}

.reserve-card-header {
  display: flex;
  align-items: center;
  gap: 16px;
  margin-bottom: 16px;
}

.reserve-icon-wrapper {
  width: 48px;
  height: 48px;
  background: var(--opti-surface-mint);
  color: var(--opti-teal-accent);
  display: flex;
  align-items: center;
  justify-content: center;
  border-radius: 50%;
}

.reserve-card-title {
  font-family: var(--font-display);
  font-size: 1.2rem;
  color: var(--opti-shade-deep);
}

.reserve-bullet-list {
  list-style: none;
  margin-top: 16px;
}

.reserve-bullet-list li {
  display: flex;
  align-items: center;
  gap: 12px;
  font-size: 0.95rem;
  color: var(--opti-text-subtle);
  margin-bottom: 8px;
}

.reserve-bullet-num {
  width: 24px;
  height: 24px;
  background: var(--opti-amber-bright);
  color: #ffffff;
  border-radius: 50%;
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 0.75rem;
  font-weight: 700;
  flex-shrink: 0;
}

.pupil-form-card {
  background: var(--opti-surface-cloud);
  padding: 40px;
  border-radius: 28px;
  box-shadow: 0 12px 40px rgba(0, 0, 0, 0.08);
  border: 1px solid var(--opti-surface-mint);
  position: sticky;
  top: 100px;
}

.pupil-form-title {
  font-family: var(--font-display);
  font-size: 1.6rem;
  color: var(--opti-shade-deep);
  margin-bottom: 12px;
}

.iris-form-element {
  display: flex;
  flex-direction: column;
  gap: 20px;
}

.iris-input-group {
  display: flex;
  flex-direction: column;
  gap: 8px;
}

.iris-input-label {
  font-size: 0.9rem;
  font-weight: 600;
  color: var(--opti-shade-deep);
}

.iris-input-field {
  width: 100%;
  padding: 14px 18px;
  border: 1.5px solid #dcdfdc;
  border-radius: 12px;
  font-family: var(--font-body);
  font-size: 1rem;
  transition: border-color 0.3s ease;
}

.iris-input-field:focus {
  outline: none;
  border-color: var(--opti-teal-accent);
}

.iris-textarea {
  min-height: 100px;
  resize: vertical;
}

.iris-checkbox-group {
  display: flex;
  align-items: flex-start;
  gap: 12px;
}

.iris-checkbox-label {
  font-size: 0.85rem;
  color: var(--opti-text-subtle);
  line-height: 1.4;
}

.iris-inline-link {
  color: var(--opti-teal-accent);
  text-decoration: underline;
}

.iris-submit-btn {
  width: 100%;
  font-size: 1.05rem;
  margin-top: 10px;
}

.iris-contact-direct {
  margin-top: 24px;
  text-align: center;
  font-size: 0.85rem;
  color: var(--opti-text-subtle);
}

.iris-mail-link {
  color: var(--opti-teal-accent);
  font-weight: 600;
  text-decoration: none;
}

@media (max-width: 900px) {
  .reserve-content-grid {
    grid-template-columns: 1fr;
  }
}

/* FAQ Section */
.reserve-faq-section {
  margin-top: 80px;
}

.reserve-faq-list {
  display: flex;
  flex-direction: column;
  gap: 16px;
  max-width: 800px;
  margin: 0 auto;
}

.reserve-faq-item {
  background: var(--opti-surface-cloud);
  border-radius: 16px;
  padding: 20px 28px;
  box-shadow: 0 4px 16px rgba(0,0,0,0.02);
}

.reserve-faq-question {
  font-family: var(--font-display);
  font-weight: 700;
  font-size: 1.1rem;
  color: var(--opti-shade-deep);
  cursor: pointer;
}

.reserve-faq-answer {
  margin-top: 12px;
  font-size: 0.95rem;
  color: var(--opti-text-subtle);
}

/* Thank you page */
.thank-hero-zone {
  padding: 12dvh 0;
  text-align: center;
}

.thank-box-card {
  background: var(--opti-surface-cloud);
  padding: 56px 32px;
  border-radius: 32px;
  max-width: 680px;
  margin: 0 auto;
  box-shadow: 0 12px 40px rgba(0,0,0,0.05);
}

/* Privacy & Terms Pages */
.privacy-document-main {
  padding: 8dvh 0;
}

.privacy-card-document {
  background: var(--opti-surface-cloud);
  padding: 56px 48px;
  border-radius: 28px;
  box-shadow: 0 8px 30px rgba(0, 0, 0, 0.03);
}

.optic-doc-subheading {
  font-family: var(--font-display);
  font-size: 1.3rem;
  color: var(--opti-shade-deep);
  margin: 28px 0 12px 0;
}

.privacy-divider {
  border: 0;
  height: 1px;
  background: var(--opti-surface-mint);
  margin: 48px 0;
}

@media (max-width: 600px) {
  .privacy-card-document {
    padding: 32px 20px;
  }
}

/* Cookie Banner */
.optic-cookie-strip {
  position: fixed;
  bottom: 0;
  left: 0;
  right: 0;
  z-index: 9999;
  background: var(--opti-shade-deep);
  color: #ffffff;
  padding: 20px;
  box-shadow: 0 -4px 20px rgba(0,0,0,0.15);
  display: none;
}

.optic-cookie-content {
  max-width: 1100px;
  margin: 0 auto;
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 20px;
  flex-wrap: wrap;
}

.optic-cookie-content p {
  font-size: 0.95rem;
  margin: 0;
  flex: 1;
}

.optic-cookie-buttons {
  display: flex;
  gap: 12px;
}

.optic-cookie-buttons button {
  padding: 8px 20px;
  font-size: 0.9rem;
}

/* Footer Section */
.retina-bottom-footer {
  background: var(--opti-shade-deep);
  color: #ffffff;
  padding: 80px 0 32px 0;
  margin-top: auto;
}

.retina-footer-grid {
  display: grid;
  grid-template-columns: 2fr 1fr 1fr;
  gap: 48px;
  margin-bottom: 48px;
}

.retina-footer-col .focus-brand-text {
  color: #ffffff;
}

.retina-footer-desc {
  font-size: 0.9rem;
  color: rgba(255, 255, 255, 0.7);
  margin-top: 16px;
  max-width: 380px;
}

.retina-footer-heading {
  font-family: var(--font-display);
  font-size: 1.1rem;
  margin-bottom: 20px;
  color: var(--opti-amber-bright);
}

.retina-footer-list {
  list-style: none;
  display: flex;
  flex-direction: column;
  gap: 12px;
}

.retina-footer-list a {
  color: rgba(255, 255, 255, 0.8);
  text-decoration: none;
  font-size: 0.9rem;
  transition: color 0.3s ease;
}

.retina-footer-list a:hover {
  color: #ffffff;
}

.retina-disclaimer-box {
  background: rgba(255, 255, 255, 0.05);
  padding: 20px 24px;
  border-radius: 16px;
  border: 1px solid rgba(255, 255, 255, 0.1);
  margin-bottom: 32px;
}

.retina-disclaimer-box p {
  font-size: 0.82rem;
  color: rgba(255, 255, 255, 0.75);
  line-height: 1.5;
}

.retina-copyright-bar {
  text-align: center;
  border-top: 1px solid rgba(255, 255, 255, 0.1);
  padding-top: 24px;
  font-size: 0.85rem;
  color: rgba(255, 255, 255, 0.5);
}

@media (max-width: 768px) {
  .retina-footer-grid {
    grid-template-columns: 1fr;
    gap: 32px;
  }
}