/* Custom CSS Variables & Anti-Footprint Stylesheet */
:root {
  --drishti-bg-light: #f3f8f6;
  --drishti-surface-card: #ffffff;
  --drishti-primary-teal: #0d9488;
  --drishti-teal-hover: #0f766e;
  --drishti-accent-amber: #f59e0b;
  --drishti-deep-navy: #0f2327;
  --drishti-text-body: #334e54;
  --drishti-border-soft: #d1e5e1;
  --drishti-hero-gradient: linear-gradient(135deg, #e6f4f1 0%, #fef3c7 100%);
  --drishti-cta-gradient: linear-gradient(135deg, #0d9488 0%, #047857 100%);
  --font-display: 'Montserrat', sans-serif;
  --font-body: 'Roboto', sans-serif;
}

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

html {
  scroll-behavior: smooth;
  font-family: var(--font-body);
  background-color: var(--drishti-bg-light);
  color: var(--drishti-text-body);
  line-height: 1.6;
}

h1, h2, h3, h4, h5, h6 {
  font-family: var(--font-display);
  color: var(--drishti-deep-navy);
  line-height: 1.25;
}

/* Scroll Progress Bar at Top Header (CSS Scroll-Driven) */
.eye-scroll-progress-line {
  position: fixed;
  top: 0;
  left: 0;
  height: 4px;
  background: var(--drishti-accent-amber);
  width: 100%;
  transform-origin: left;
  z-index: 100;
  animation: drishtiScrollProgress linear;
  animation-timeline: scroll();
}

@keyframes drishtiScrollProgress {
  from { transform: scaleX(0); }
  to { transform: scaleX(1); }
}

/* Viewport Scroll Animations (View Timeline) */
section, aside, article {
  animation: drishtiFadeUp linear both;
  animation-timeline: view();
  animation-range: entry 10% cover 25%;
}

@keyframes drishtiFadeUp {
  from {
    opacity: 0.2;
    transform: translateY(20px);
  }
  to {
    opacity: 1;
    transform: translateY(0);
  }
}

/* Header Styling (Option 2: Nav Left, Logo Right) */
.drishti-top-header {
  position: sticky;
  top: 0;
  z-index: 90;
  background-color: rgba(15, 35, 39, 0.95);
  backdrop-filter: blur(8px);
  padding: 12px 24px;
  border-bottom: 1px solid rgba(255, 255, 255, 0.1);
}

.drishti-header-inner {
  max-width: 1200px;
  margin: 0 auto;
  display: flex;
  align-items: center;
  justify-content: space-between;
}

.drishti-nav-left {
  display: flex;
  align-items: center;
}

.drishti-nav-menu-list {
  display: flex;
  align-items: center;
  list-style: none;
  gap: 20px;
}

.drishti-nav-link {
  color: #e2e8f0;
  text-decoration: none;
  font-size: 0.95rem;
  font-weight: 500;
  transition: color 0.3s ease;
}

.drishti-nav-link:hover {
  color: var(--drishti-accent-amber);
}

.drishti-contact-pill-link {
  background: var(--drishti-primary-teal);
  color: #ffffff !important;
  padding: 8px 18px;
  border-radius: 999px;
  text-decoration: none;
  font-weight: 600;
  font-size: 0.9rem;
  transition: background 0.3s ease;
}

.drishti-contact-pill-link:hover {
  background: var(--drishti-teal-hover);
}

.drishti-logo-right a img {
  display: block;
  max-height: 42px;
  width: auto;
}

.drishti-hamburger-icon {
  display: none;
  flex-direction: column;
  gap: 5px;
  cursor: pointer;
  padding: 4px;
}

.drishti-hamburger-icon span {
  display: block;
  width: 25px;
  height: 3px;
  background-color: #ffffff;
  border-radius: 2px;
}

/* Badge Tag Component */
.drishti-badge-tag {
  display: inline-block;
  background: rgba(13, 148, 136, 0.15);
  color: var(--drishti-primary-teal);
  font-weight: 700;
  font-size: 0.85rem;
  padding: 4px 14px;
  border-radius: 999px;
  margin-bottom: 12px;
  text-transform: uppercase;
  letter-spacing: 0.5px;
}

.glow-tag {
  background: rgba(245, 158, 11, 0.2);
  color: var(--drishti-accent-amber);
}

/* HERO SECTION (Preset N: 50/50 split with organic blob) */
.opti-hero-viewport {
  min-height: 75vh;
  background: var(--drishti-hero-gradient);
  display: flex;
  align-items: center;
  padding: 60px 24px;
  position: relative;
  overflow: hidden;
}

.opti-hero-shell {
  max-width: 1200px;
  margin: 0 auto;
  width: 100%;
  display: flex;
  align-items: center;
  gap: 40px;
}

.opti-hero-text-col {
  flex: 1;
}

.opti-fluid-heading {
  font-size: clamp(2rem, 4.5vw, 3.8rem);
  font-weight: 800;
  color: var(--drishti-deep-navy);
  margin-bottom: 18px;
}

.opti-hero-lead-text {
  font-size: 1.15rem;
  color: var(--drishti-text-body);
  margin-bottom: 28px;
  max-width: 540px;
}

.opti-hero-blob-col {
  flex: 1;
  display: flex;
  justify-content: center;
}

.opti-blob-frame {
  width: 100%;
  max-width: 480px;
  height: 380px;
  border-radius: 60% 40% 30% 70% / 60% 30% 70% 40%;
  overflow: hidden;
  box-shadow: 0 20px 40px rgba(13, 148, 136, 0.18);
  border: 4px solid #ffffff;
}

.opti-blob-frame img {
  width: 100%;
  height: 100%;
  object-fit: cover;
}

.opti-cta-pill-btn {
  display: inline-block;
  background: var(--drishti-primary-teal);
  color: #ffffff;
  padding: 14px 32px;
  border-radius: 999px;
  text-decoration: none;
  font-weight: 700;
  font-size: 1.05rem;
  box-shadow: 0 8px 20px rgba(13, 148, 136, 0.3);
  transition: transform 0.3s ease, background 0.3s ease, box-shadow 0.3s ease;
  border: none;
  cursor: pointer;
  text-align: center;
}

.opti-cta-pill-btn:hover {
  transform: translateY(-2px);
  background: var(--drishti-teal-hover);
  box-shadow: 0 12px 26px rgba(13, 148, 136, 0.4);
}

/* FEATURES SECTION (Preset N: 5 Blob cards with hover breathing effect) */
.retina-feat-section {
  padding-top: 10dvh;
  padding-bottom: 10dvh;
  background-color: var(--drishti-surface-card);
}

.retina-feat-shell {
  max-width: 1200px;
  margin: 0 auto;
  padding: 0 24px;
}

.retina-section-header {
  text-align: center;
  max-width: 680px;
  margin: 0 auto 48px auto;
}

.retina-heading-title {
  font-size: clamp(1.8rem, 3vw, 2.6rem);
  font-weight: 700;
  margin-bottom: 12px;
}

.retina-sub-description {
  font-size: 1.05rem;
  color: #527076;
}

.retina-elements-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(280px, 1fr));
  gap: 28px;
}

.retina-feat-card {
  background-color: var(--drishti-bg-light);
  border-radius: 20px;
  padding: 30px;
  border: 1px solid var(--drishti-border-soft);
  transition: transform 0.3s ease, box-shadow 0.3s ease;
}

.retina-feat-card:hover {
  transform: translateY(-4px);
  box-shadow: 0 12px 28px rgba(0, 0, 0, 0.06);
}

.retina-blob-icon-box {
  width: 64px;
  height: 64px;
  border-radius: 60% 40% 55% 45% / 45% 55% 40% 60%;
  background: var(--drishti-cta-gradient);
  color: #ffffff;
  display: flex;
  align-items: center;
  justify-content: center;
  margin-bottom: 20px;
  transition: border-radius 0.6s ease;
}

.retina-feat-card:hover .retina-blob-icon-box {
  border-radius: 40% 60% 45% 55% / 55% 45% 60% 40%;
}

.retina-card-head {
  font-size: 1.25rem;
  font-weight: 700;
  margin-bottom: 10px;
}

.retina-card-body {
  font-size: 0.95rem;
  color: var(--drishti-text-body);
}

/* CONTENT SECTION 1 (Image left with ellipse blob clip) */
.ocular-content-block-a {
  padding-top: 10dvh;
  padding-bottom: 10dvh;
  background-color: var(--drishti-bg-light);
}

.ocular-content-shell {
  max-width: 1200px;
  margin: 0 auto;
  padding: 0 24px;
  display: flex;
  align-items: center;
  gap: 48px;
}

.ocular-img-side {
  flex: 1;
}

.ocular-ellipse-clip-wrapper {
  clip-path: ellipse(50% 46% at 55% 50%);
  width: 100%;
  max-width: 500px;
  margin: 0 auto;
  overflow: hidden;
  box-shadow: 0 15px 30px rgba(0,0,0,0.1);
}

.ocular-ellipse-clip-wrapper img {
  width: 100%;
  height: auto;
  display: block;
}

.ocular-text-side {
  flex: 1;
}

.ocular-paragraph {
  font-size: 1.05rem;
  margin-bottom: 16px;
  color: var(--drishti-text-body);
}

.ocular-bullet-list {
  margin-top: 20px;
  display: flex;
  flex-direction: column;
  gap: 12px;
}

.ocular-bullet-item {
  display: flex;
  align-items: center;
  gap: 12px;
  font-weight: 500;
}

.ocular-check-mark {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  width: 24px;
  height: 24px;
  border-radius: 50%;
  background: var(--drishti-primary-teal);
  color: #ffffff;
  font-size: 0.85rem;
  font-weight: 800;
}

/* CTA STRIP (Preset N: Organic wave separators top/bottom) */
.vision-cta-strip-wrap {
  position: relative;
  background: var(--drishti-cta-gradient);
  color: #ffffff;
  padding: 80px 24px;
  text-align: center;
  overflow: hidden;
}

.vision-cta-top-wave {
  position: absolute;
  top: 0;
  left: 0;
  right: 0;
  height: 24px;
  background: var(--drishti-bg-light);
  clip-path: polygon(0 0, 100% 0, 100% 100%, 0 20%);
}

.vision-cta-bottom-wave {
  position: absolute;
  bottom: 0;
  left: 0;
  right: 0;
  height: 24px;
  background: var(--drishti-surface-card);
  clip-path: polygon(0 80%, 100% 0, 100% 100%, 0 100%);
}

.vision-cta-inner-content {
  max-width: 750px;
  margin: 0 auto;
  position: relative;
  z-index: 10;
}

.vision-cta-headline {
  font-size: clamp(1.8rem, 3.5vw, 2.8rem);
  color: #ffffff;
  margin-bottom: 16px;
}

.vision-cta-sub {
  font-size: 1.1rem;
  margin-bottom: 28px;
  opacity: 0.95;
}

.light-theme-btn {
  background: var(--drishti-accent-amber) !important;
  color: var(--drishti-deep-navy) !important;
  box-shadow: 0 8px 20px rgba(245, 158, 11, 0.4) !important;
}

.light-theme-btn:hover {
  background: #d97706 !important;
  color: #ffffff !important;
}

/* DIVIDER */
.drishti-section-divider {
  border: none;
  height: 1px;
  background: var(--drishti-border-soft);
  margin: 0;
}

/* CONTENT SECTION 2 (Preset N: bg2.webp full width wave-clip + text overlay) */
.pupil-wave-section {
  position: relative;
  padding-top: 12dvh;
  padding-bottom: 12dvh;
  background-color: var(--drishti-deep-navy);
  color: #ffffff;
  clip-path: polygon(0 4%, 100% 0, 100% 96%, 0 100%);
  overflow: hidden;
}

.pupil-wave-bg-holder {
  position: absolute;
  top: 0;
  left: 0;
  width: 100%;
  height: 100%;
  z-index: 1;
}

.pupil-wave-bg-holder img {
  width: 100%;
  height: 100%;
  object-fit: cover;
}

.pupil-dark-overlay {
  position: absolute;
  top: 0;
  left: 0;
  width: 100%;
  height: 100%;
  background: rgba(15, 35, 39, 0.88);
}

.pupil-wave-content-shell {
  position: relative;
  z-index: 10;
  max-width: 1100px;
  margin: 0 auto;
  padding: 0 24px;
  text-align: center;
}

.light-text {
  color: #ffffff !important;
}

.pupil-text-body {
  font-size: 1.1rem;
  max-width: 700px;
  margin: 0 auto 40px auto;
  color: #e2e8f0;
}

.pupil-tips-flex {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(260px, 1fr));
  gap: 24px;
  text-align: left;
}

.pupil-tip-card {
  background: rgba(255, 255, 255, 0.08);
  backdrop-filter: blur(6px);
  padding: 24px;
  border-radius: 16px;
  border: 1px solid rgba(255, 255, 255, 0.15);
}

.pupil-tip-card h4 {
  font-size: 1.2rem;
  color: var(--drishti-accent-amber);
  margin-bottom: 8px;
}

.pupil-tip-card p {
  font-size: 0.95rem;
  color: #cbd5e1;
}

/* TESTIMONIALS SECTION (Preset N: Bubble-shaped reviews) */
.drishti-reviews-area {
  padding-top: 10dvh;
  padding-bottom: 10dvh;
  background-color: var(--drishti-surface-card);
}

.drishti-reviews-shell {
  max-width: 1200px;
  margin: 0 auto;
  padding: 0 24px;
}

.drishti-bubbles-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(300px, 1fr));
  gap: 32px;
}

.drishti-feedback-bubble {
  background-color: var(--drishti-bg-light);
  padding: 32px;
  border-radius: 40% 60% 60% 40% / 40% 40% 60% 60%;
  border: 2px solid var(--drishti-border-soft);
  display: flex;
  flex-direction: column;
  justify-content: space-between;
  transition: border-radius 0.5s ease;
}

.drishti-feedback-bubble:hover {
  border-radius: 50% 50% 50% 50% / 50% 50% 50% 50%;
}

.drishti-quote-text {
  font-size: 1rem;
  font-style: italic;
  color: var(--drishti-text-body);
  margin-bottom: 20px;
}

.drishti-author-info {
  display: flex;
  align-items: center;
  justify-content: space-between;
  border-top: 1px solid var(--drishti-border-soft);
  padding-top: 14px;
}

.drishti-author-name {
  font-weight: 700;
  color: var(--drishti-deep-navy);
}

.drishti-star-rating {
  color: var(--drishti-accent-amber);
  letter-spacing: 2px;
}

/* FORM SECTION (Preset N: Centered card 28px radius + address left & form right) */
.vision-contact-stage {
  padding-top: 10dvh;
  padding-bottom: 10dvh;
  background-color: var(--drishti-bg-light);
}

.vision-contact-card-box {
  max-width: 1000px;
  margin: 0 auto;
  background: var(--drishti-surface-card);
  border-radius: 28px;
  box-shadow: 0 12px 40px rgba(0, 0, 0, 0.08);
  padding: 48px;
  border: 1px solid var(--drishti-border-soft);
}

.vision-contact-grid {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 40px;
}

.vision-address-side {
  font-style: normal;
}

.vision-address-title {
  font-size: 1.8rem;
  font-weight: 700;
  margin-bottom: 12px;
}

.vision-address-desc {
  font-size: 1rem;
  color: var(--drishti-text-body);
  margin-bottom: 24px;
}

.vision-meta-details {
  display: flex;
  flex-direction: column;
  gap: 12px;

}

.vision-meta-item {
  font-size: 0.95rem;
  color: var(--drishti-deep-navy);
}

.vision-form-side {
  display: flex;
  flex-direction: column;
  gap: 16px;
}

.vision-field-group {
  display: flex;
  flex-direction: column;
  gap: 6px;
}

.vision-field-label {
  font-size: 0.9rem;
  font-weight: 600;
  color: var(--drishti-deep-navy);
}

.vision-text-input {
  width: 100%;
  padding: 12px 16px;
  border-radius: 8px;
  border: 1px solid var(--drishti-border-soft);
  background-color: #f8faf9;
  font-family: var(--font-body);
  font-size: 0.95rem;
  color: var(--drishti-deep-navy);
  transition: border-color 0.3s ease, box-shadow 0.3s ease;
}

.vision-text-input:focus {
  outline: none;
  border-color: var(--drishti-primary-teal);
  box-shadow: 0 0 0 3px rgba(13, 148, 136, 0.15);
}

.full-width-btn {
  width: 100%;
  margin-top: 8px;
}

/* FAQ SECTION (Preset N: 4 soft blob list items, 12px radius, open) */
.ocular-faq-stage {
  padding-top: 10dvh;
  padding-bottom: 10dvh;
  background-color: var(--drishti-surface-card);
}

.ocular-faq-shell {
  max-width: 900px;
  margin: 0 auto;
  padding: 0 24px;
}

.ocular-faq-blob-list {
  display: flex;
  flex-direction: column;
  gap: 20px;
}

.ocular-faq-blob-item {
  background-color: var(--drishti-bg-light);
  border-radius: 12px;
  padding: 24px;
  border-left: 5px solid var(--drishti-primary-teal);
  box-shadow: 0 4px 12px rgba(0,0,0,0.03);
}

.ocular-faq-question {
  font-size: 1.15rem;
  font-weight: 700;
  color: var(--drishti-deep-navy);
  margin-bottom: 10px;
}

.ocular-faq-answer {
  font-size: 0.98rem;
  color: var(--drishti-text-body);
  line-height: 1.6;
}

/* FOOTER SECTION */
.drishti-bottom-footer {
  background-color: var(--drishti-deep-navy);
  color: #ffffff;
  padding: 40px 24px;
  border-top: 1px solid rgba(255, 255, 255, 0.1);
}

.drishti-footer-shell {
  max-width: 1200px;
  margin: 0 auto;
  display: flex;
  align-items: center;
  justify-content: space-between;
}

.drishti-footer-logo-box img {
  display: block;
  max-height: 38px;
  width: auto;
}

.drishti-footer-links-list {
  display: flex;
  align-items: center;
  list-style: none;
  gap: 24px;
  flex-wrap: wrap;
}

.drishti-footer-links-list a {
  color: #cbd5e1;
  text-decoration: none;
  font-size: 0.9rem;
  transition: color 0.3s ease;
}

.drishti-footer-links-list a:hover {
  color: var(--drishti-accent-amber);
}

/* RESPONSIVE DESIGN (MOBILE ADAPTATION) */
@media (max-width: 868px) {
  /* Header Responsive */
  .drishti-hamburger-icon {
    display: flex;
  }

  .drishti-nav-left {
    position: absolute;
    top: 100%;
    left: 0;
    right: 0;
    background-color: var(--drishti-deep-navy);
    padding: 20px;
    display: none;
    border-bottom: 1px solid rgba(255,255,255,0.1);
  }

  .drishti-toggle-input:checked ~ .drishti-nav-left {
    display: block;
  }

  .drishti-nav-menu-list {
    flex-direction: column;
    align-items: flex-start;
    gap: 16px;
  }

  /* Hero Split */
  .opti-hero-shell {
    flex-direction: column;
    text-align: center;
  }

  .opti-hero-lead-text {
    margin: 0 auto 24px auto;
  }

  .opti-blob-frame {
    height: 300px;
  }

  /* Content Section 1 Split */
  .ocular-content-shell {
    flex-direction: column;
  }

  /* Form Grid */
  .vision-contact-grid {
    grid-template-columns: 1fr;
  }

  .vision-contact-card-box {
    padding: 28px 20px;
  }

  /* Footer Mobile */
  .drishti-footer-shell {
    flex-direction: column;
    gap: 20px;
    text-align: center;
  }

  .drishti-footer-links-list {
    justify-content: center;
    gap: 16px;
  }
}