/* Custom CSS Variables - Specific to Ocular Visual Health Theme */
:root {
  --optic-canvas-bg: #f8fafc;
  --optic-deep-shade: #0f172a;
  --optic-flare-accent: #f43f5e;
  --optic-vibe-green: #10b981;
  --optic-sky-electric: #3b82f6;
  --optic-glass-white: rgba(255, 255, 255, 0.9);
  --optic-sunset-gradient: linear-gradient(135deg, #f43f5e 0%, #3b82f6 100%);
  --optic-ocean-gradient: linear-gradient(135deg, #0f172a 0%, #1e293b 100%);
  --font-display: 'Playfair Display', Georgia, serif;
  --font-body: 'Poppins', sans-serif;
  --optic-radius-soft: 16px;
  --optic-pad-normal: 10dvh;
  --optic-shadow-raised: 0 10px 25px -5px rgba(15, 23, 42, 0.1), 0 8px 10px -6px rgba(15, 23, 42, 0.1);
}

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

body {
  font-family: var(--font-body);
  background-color: var(--optic-canvas-bg);
  color: var(--optic-deep-shade);
  line-height: 1.6;
  overflow-x: hidden;
}

/* Core Typography */
h1, h2, h3, h4 {
  font-family: var(--font-display);
  font-weight: 700;
  line-height: 1.2;
}

a {
  text-decoration: none;
  color: inherit;
  transition: all 0.3s ease;
}

/* Scroll Progress Tracker */
.optic-progress-strip {
  position: fixed;
  top: 0;
  left: 0;
  height: 4px;
  background: var(--optic-sunset-gradient);
  z-index: 10000;
  width: 0%;
  animation: optic-line-grow linear;
  animation-timeline: scroll();
}

@keyframes optic-line-grow {
  to { width: 100%; }
}

/* Custom Nav/Header Component */
.optic-top-bar {
  background-color: var(--optic-flare-accent);
  color: #ffffff;
  padding: 1rem 5%;
  position: sticky;
  top: 0;
  z-index: 999;
  box-shadow: var(--optic-shadow-raised);
}

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

.optic-brand-anchor {
  display: flex;
  align-items: center;
  gap: 0.5rem;
  font-size: 1.5rem;
  font-weight: 700;
  font-family: var(--font-display);
  color: #ffffff;
}

.optic-logo-icon {
  width: 32px;
  height: 32px;
  fill: currentColor;
}

.optic-nav-shell {
  display: flex;
  align-items: center;
  gap: 2rem;
}

.optic-nav-link {
  color: rgba(255, 255, 255, 0.9);
  font-weight: 500;
  font-size: 0.95rem;
  position: relative;
}

.optic-nav-link:hover {
  color: #ffffff;
}

.optic-nav-link::after {
  content: '';
  position: absolute;
  bottom: -4px;
  left: 0;
  width: 0;
  height: 2px;
  background-color: #ffffff;
  transition: width 0.3s ease;
}

.optic-nav-link:hover::after {
  width: 100%;
}

/* Mobile Hamburger Menu (CSS Only) */
.optic-menu-toggle {
  display: none;
}

.optic-burger-lbl {
  display: none;
  flex-direction: column;
  gap: 5px;
  cursor: pointer;
  z-index: 1000;
}

.optic-burger-lbl span {
  width: 25px;
  height: 3px;
  background-color: #ffffff;
  border-radius: 2px;
  transition: 0.3s ease;
}

/* Index Hero Section - Preset C (Bold Accent Gradient) */
.optic-stage-box {
  background: var(--optic-sunset-gradient);
  color: #ffffff;
  min-height: 90vh;
  position: relative;
  overflow: hidden;
  display: flex;
  align-items: center;
  padding: var(--optic-pad-normal) 5%;
}

.optic-stage-bg-num {
  position: absolute;
  right: -5%;
  bottom: -5%;
  font-size: 25rem;
  font-weight: 900;
  color: rgba(255, 255, 255, 0.06);
  line-height: 1;
  pointer-events: none;
  font-family: var(--font-display);
}

.optic-stage-shapes {
  position: absolute;
  right: 10%;
  top: 15%;
  width: 300px;
  height: 300px;
  border: 40px solid rgba(255, 255, 255, 0.05);
  border-radius: 50%;
  pointer-events: none;
}

.optic-stage-shapes::after {
  content: '';
  position: absolute;
  top: -50px;
  left: -50px;
  width: 100px;
  height: 100px;
  background-color: rgba(255, 255, 255, 0.04);
  transform: rotate(45deg);
}

.optic-stage-main {
  max-width: 800px;
  position: relative;
  z-index: 2;
}

.optic-stage-title {
  font-size: clamp(2.5rem, 5vw, 4.5rem);
  margin-bottom: 1.5rem;
  color: #ffffff;
}

.optic-stage-sub {
  font-size: clamp(1.1rem, 2vw, 1.4rem);
  margin-bottom: 2.5rem;
  opacity: 0.95;
  max-width: 650px;
}

/* Button UI Elements */
.optic-action-pill {
  display: inline-flex;
  align-items: center;
  gap: 0.8rem;
  background-color: var(--optic-deep-shade);
  color: #ffffff;
  padding: 1rem 2.5rem;
  border-radius: 999px;
  font-weight: 600;
  box-shadow: var(--optic-shadow-raised);
  transform: translateY(0);
}

.optic-action-pill:hover {
  transform: translateY(-2px);
  box-shadow: 0 15px 30px rgba(0,0,0,0.2);
  background-color: #000000;
}

/* Content Section with Diagonal Clip-Path (Preset C) */
.optic-diagonal-block {
  clip-path: polygon(0 6dvh, 100% 0, 100% 94dvh, 0 100%);
  background-image: linear-gradient(rgba(15, 23, 42, 0.85), rgba(15, 23, 42, 0.85)), url('img/bg2.webp');
  background-size: cover;
  background-position: center;
  background-attachment: fixed;
  color: #ffffff;
  padding: calc(var(--optic-pad-normal) + 5dvh) 5%;
}

.optic-diagonal-body {
  max-width: 1000px;
  margin: 0 auto;
  background-color: rgba(15, 23, 42, 0.7);
  padding: 3rem;
  border-radius: var(--optic-radius-soft);
  backdrop-filter: blur(10px);
  border: 1px solid rgba(255, 255, 255, 0.1);
}

.optic-block-title {
  font-size: 2.5rem;
  margin-bottom: 1.5rem;
  color: var(--optic-vibe-green);
}

.optic-block-text {
  font-size: 1.15rem;
  margin-bottom: 1.5rem;
  line-height: 1.8;
}

/* Features Section (No frames, bold numeric indicators) - Preset C */
.optic-features-arena {
  padding: var(--optic-pad-normal) 5%;
  max-width: 1200px;
  margin: 0 auto;
}

.optic-features-head {
  text-align: center;
  margin-bottom: 4rem;
}

.optic-features-head h2 {
  font-size: 2.8rem;
  color: var(--optic-deep-shade);
}

.optic-grid-set {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(300px, 1fr));
  gap: 3rem;
}

.optic-card-minimal {
  padding: 1.5rem 0;
  border-bottom: 1px solid rgba(15, 23, 42, 0.1);
}

.optic-card-minimal:last-child {
  border-bottom: none;
}

.optic-card-num {
  font-size: 4rem;
  font-weight: 900;
  color: var(--optic-flare-accent);
  line-height: 1;
  margin-bottom: 1rem;
  font-family: var(--font-display);
}

.optic-card-title {
  font-size: 1.5rem;
  margin-bottom: 1rem;
  color: var(--optic-deep-shade);
}

.optic-card-text {
  color: #475569;
  font-size: 1rem;
}

/* How It Works Section - Preset C (Horizontal Stepper with Solid Connector) */
.optic-how-arena {
  padding: var(--optic-pad-normal) 5%;
  background-color: #f1f5f9;
}

.optic-how-wrapper {
  max-width: 1100px;
  margin: 0 auto;
}

.optic-how-title {
  text-align: center;
  font-size: 2.8rem;
  margin-bottom: 4rem;
}

.optic-stepper-track {
  display: flex;
  justify-content: space-between;
  position: relative;
  gap: 2rem;
}

.optic-stepper-track::before {
  content: '';
  position: absolute;
  top: 40px;
  left: 5%;
  right: 5%;
  height: 4px;
  background-color: var(--optic-flare-accent);
  z-index: 1;
}

.optic-step-node {
  flex: 1;
  text-align: center;
  position: relative;
  z-index: 2;
}

.optic-node-indicator {
  width: 80px;
  height: 80px;
  border-radius: 50%;
  margin: 0 auto 1.5rem;
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 1.8rem;
  font-weight: 700;
  transition: all 0.3s ease;
}

/* Alternating solid and outline nodes */
.optic-step-node:nth-child(odd) .optic-node-indicator {
  background-color: var(--optic-flare-accent);
  color: #ffffff;
  border: 4px solid #f1f5f9;
  box-shadow: var(--optic-shadow-raised);
}

.optic-step-node:nth-child(even) .optic-node-indicator {
  background-color: #ffffff;
  color: var(--optic-flare-accent);
  border: 4px solid var(--optic-flare-accent);
  box-shadow: var(--optic-shadow-raised);
}

.optic-node-title {
  font-size: 1.25rem;
  margin-bottom: 0.75rem;
  color: var(--optic-deep-shade);
}

.optic-node-text {
  color: #475569;
  font-size: 0.95rem;
  padding: 0 10%;
}

/* CTA Strip (Dark Background, horizontal flex layout) */
.optic-cta-strip {
  background-color: var(--optic-deep-shade);
  color: #ffffff;
  padding: 4rem 10%;
}

.optic-cta-flex {
  max-width: 1200px;
  margin: 0 auto;
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 2rem;
}

.optic-cta-words {
  max-width: 700px;
}

.optic-cta-words h2 {
  font-size: 2.2rem;
  margin-bottom: 1rem;
}

.optic-cta-words p {
  opacity: 0.85;
  font-size: 1.1rem;
}

.optic-pill-trans {
  background-color: #ffffff;
  color: var(--optic-deep-shade);
}

.optic-pill-trans:hover {
  background-color: var(--optic-flare-accent);
  color: #ffffff;
}

/* Expert Page Layout (Preset C) */
.optic-expert-hero {
  background: var(--optic-ocean-gradient);
  color: #ffffff;
  padding: 6dvh 5%;
  text-align: center;
}

.optic-expert-hero h1 {
  font-size: 3rem;
  margin-bottom: 1rem;
}

.optic-bio-split {
  padding: var(--optic-pad-normal) 5%;
  max-width: 1200px;
  margin: 0 auto;
  display: flex;
  gap: 4rem;
  align-items: center;
}

.optic-bio-text {
  flex: 1.2;
}

.optic-bio-text h2 {
  font-size: 2.5rem;
  margin-bottom: 1rem;
}

.optic-bio-tag {
  color: var(--optic-flare-accent);
  font-weight: 600;
  text-transform: uppercase;
  margin-bottom: 1.5rem;
  display: inline-block;
  letter-spacing: 1px;
}

.optic-bio-text p {
  margin-bottom: 1.5rem;
  font-size: 1.1rem;
  color: #475569;
}

.optic-bio-pic-shell {
  flex: 0.8;
  position: relative;
}

.optic-bio-pic {
  width: 100%;
  border-radius: var(--optic-radius-soft);
  box-shadow: var(--optic-shadow-raised);
  object-fit: cover;
  display: block;
}

/* Stats Arena - Row of 4 items */
.optic-stats-strip {
  background-color: var(--optic-canvas-bg);
  padding: 4rem 5%;
  border-top: 1px solid rgba(15, 23, 42, 0.05);
  border-bottom: 1px solid rgba(15, 23, 42, 0.05);
}

.optic-stats-grid {
  max-width: 1200px;
  margin: 0 auto;
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(200px, 1fr));
  gap: 2rem;
  text-align: center;
}

.optic-stat-cell {
  padding: 1rem;
}

.optic-stat-num {
  font-size: 3.5rem;
  font-weight: 900;
  color: var(--optic-sky-electric);
  margin-bottom: 0.5rem;
}

.optic-stat-lbl {
  font-size: 1rem;
  font-weight: 600;
  color: var(--optic-deep-shade);
}

/* Reserve Page Layout - Preset C (60% Form Left, 40% Cards Right) */
.optic-reservation-shell {
  padding: var(--optic-pad-normal) 5%;
  max-width: 1200px;
  margin: 0 auto;
}

.optic-res-flex-grid {
  display: flex;
  gap: 4rem;
  align-items: flex-start;
}

.optic-form-column {
  flex: 1.2;
}

.optic-form-column h2 {
  font-size: 2.5rem;
  margin-bottom: 1rem;
}

.optic-form-column p {
  margin-bottom: 2rem;
  color: #475569;
}

.optic-visual-form {
  background-color: #ffffff;
  padding: 3rem;
  border-radius: var(--optic-radius-soft);
  box-shadow: var(--optic-shadow-raised);
}

.optic-form-group {
  margin-bottom: 1.5rem;
}

.optic-form-group label {
  display: block;
  font-weight: 600;
  margin-bottom: 0.5rem;
  color: var(--optic-deep-shade);
}

.optic-form-group input,
.optic-form-group textarea {
  width: 100%;
  padding: 0.85rem 1.2rem;
  border-radius: 8px;
  border: 1px solid #cbd5e1;
  font-family: inherit;
  font-size: 1rem;
  transition: border-color 0.3s ease;
}

.optic-form-group input:focus,
.optic-form-group textarea:focus {
  outline: none;
  border-color: var(--optic-flare-accent);
}

.optic-check-group {
  display: flex;
  align-items: flex-start;
  gap: 0.75rem;
  margin-bottom: 2rem;
}

.optic-check-group input {
  margin-top: 0.3rem;
}

.optic-check-group label {
  font-size: 0.9rem;
  color: #475569;
  font-weight: 400;
}

.optic-check-group a {
  color: var(--optic-sky-electric);
  text-decoration: underline;
}

.optic-submit-btn {
  width: 100%;
  background-color: var(--optic-flare-accent);
  color: #ffffff;
  border: none;
  padding: 1rem;
  font-size: 1.1rem;
  font-weight: 600;
  border-radius: 999px;
  cursor: pointer;
  transition: all 0.3s ease;
}

.optic-submit-btn:hover {
  background-color: var(--optic-deep-shade);
}

.optic-info-column {
  flex: 0.8;
  display: flex;
  flex-direction: column;
  gap: 1.5rem;
}

.optic-info-box {
  background-color: #ffffff;
  padding: 2rem;
  border-radius: var(--optic-radius-soft);
  box-shadow: var(--optic-shadow-raised);
}

.optic-info-header {
  display: flex;
  align-items: center;
  gap: 1rem;
  margin-bottom: 1rem;
}

.optic-info-header span {
  background-color: var(--optic-vibe-green);
  color: #ffffff;
  width: 40px;
  height: 40px;
  border-radius: 50%;
  display: flex;
  align-items: center;
  justify-content: center;
  font-weight: 700;
}

.optic-info-header h3 {
  font-size: 1.25rem;
  color: var(--optic-deep-shade);
}

.optic-bullet-list {
  list-style: none;
  margin-top: 1rem;
}

.optic-bullet-list li {
  margin-bottom: 0.5rem;
  padding-left: 1.5rem;
  position: relative;
  font-size: 0.95rem;
  color: #475569;
}

.optic-bullet-list li::before {
  content: '•';
  color: var(--optic-vibe-green);
  font-size: 1.5rem;
  position: absolute;
  left: 0;
  top: -0.25rem;
}

.optic-email-line {
  margin-top: 1.5rem;
  font-weight: 600;
}

.optic-email-line a {
  color: var(--optic-flare-accent);
}

/* FAQ Accordion Styling (Open visually, styled with clean details) */
.optic-faq-board {
  max-width: 900px;
  margin: var(--optic-pad-normal) auto 0;
  padding-top: var(--optic-pad-normal);
  border-top: 2px solid rgba(15, 23, 42, 0.05);
}

.optic-faq-title {
  text-align: center;
  font-size: 2.5rem;
  margin-bottom: 3rem;
  color: var(--optic-deep-shade);
}

.optic-faq-node {
  margin-bottom: 1.5rem;
  background-color: #ffffff;
  padding: 2rem;
  border-radius: var(--optic-radius-soft);
  box-shadow: var(--optic-shadow-raised);
}

.optic-faq-q {
  font-size: 1.2rem;
  font-weight: 700;
  margin-bottom: 0.75rem;
  color: var(--optic-deep-shade);
}

.optic-faq-a {
  color: #475569;
  font-size: 1rem;
}

/* Legal Documents layout */
.optic-legal-container {
  max-width: 800px;
  margin: 4rem auto;
  padding: 0 5%;
}

.optic-legal-container h1 {
  font-size: 2.5rem;
  margin-bottom: 2rem;
  border-bottom: 2px solid var(--optic-flare-accent);
  padding-bottom: 0.5rem;
}

.optic-legal-container h2 {
  font-size: 1.75rem;
  margin-top: 2.5rem;
  margin-bottom: 1rem;
}

.optic-legal-container p {
  margin-bottom: 1.5rem;
  color: #334155;
  font-size: 1.05rem;
}

/* Cookie Banner Custom styles */
.optic-cookie-curtain {
  position: fixed;
  bottom: 0;
  left: 0;
  right: 0;
  background-color: var(--optic-deep-shade);
  color: #ffffff;
  padding: 1.5rem 5%;
  z-index: 10000;
  display: none;
}

.optic-cookie-bar {
  max-width: 1200px;
  margin: 0 auto;
  display: flex;
  justify-content: space-between;
  align-items: center;
  gap: 2rem;
}

.optic-cookie-left {
  flex: 1;
}

.optic-cookie-buttons {
  display: flex;
  gap: 1rem;
}

.optic-cookie-btn {
  padding: 0.75rem 1.5rem;
  border-radius: 999px;
  font-weight: 600;
  cursor: pointer;
  border: none;
  font-size: 0.9rem;
}

.optic-cookie-btn-ok {
  background-color: var(--optic-flare-accent);
  color: #ffffff;
}

.optic-cookie-btn-no {
  background-color: rgba(255, 255, 255, 0.1);
  color: #ffffff;
}

/* Standard Footer Component */
.optic-sub-bottom {
  background-color: var(--optic-deep-shade);
  color: #ffffff;
  padding: 4rem 5% 2rem;
  border-top: 1px solid rgba(255,255,255,0.1);
}

.optic-bottom-inner {
  max-width: 1200px;
  margin: 0 auto;
}

.optic-foot-cols {
  display: flex;
  justify-content: space-between;
  align-items: flex-start;
  flex-wrap: wrap;
  gap: 3rem;
  margin-bottom: 3rem;
}

.optic-foot-brand {
  max-width: 350px;
}

.optic-foot-links-pkg {
  display: flex;
  gap: 4rem;
}

.optic-foot-links-pkg ul {
  list-style: none;
}

.optic-foot-links-pkg li {
  margin-bottom: 0.75rem;
}

.optic-foot-links-pkg a {
  color: rgba(255, 255, 255, 0.75);
}

.optic-foot-links-pkg a:hover {
  color: #ffffff;
}

.optic-disclaimer-box {
  background-color: rgba(255, 255, 255, 0.05);
  border-left: 4px solid var(--optic-flare-accent);
  padding: 1.5rem;
  border-radius: 4px;
  margin-bottom: 2rem;
  font-size: 0.9rem;
  color: rgba(255, 255, 255, 0.8);
}

.optic-foot-copymark {
  text-align: center;
  font-size: 0.85rem;
  color: rgba(255, 255, 255, 0.5);
  border-top: 1px solid rgba(255, 255, 255, 0.1);
  padding-top: 2rem;
}

/* Thank You Page Specific Styles */
.optic-thank-box {
  padding: var(--optic-pad-normal) 5%;
  text-align: center;
  max-width: 700px;
  margin: 0 auto;
}

.optic-thank-box h1 {
  font-size: 3rem;
  margin-bottom: 1.5rem;
  color: var(--optic-deep-shade);
}

.optic-thank-box p {
  font-size: 1.2rem;
  margin-bottom: 2rem;
  color: #475569;
}

.optic-thank-image {
  max-width: 100%;
  height: auto;
  border-radius: var(--optic-radius-soft);
  margin-bottom: 2.5rem;
  box-shadow: var(--optic-shadow-raised);
}

/* Scroll Animation classes (CSS viewing effect) */
.optic-reveal-zone {
  animation: optic-fade-slide 0.6s linear both;
  animation-timeline: view();
  animation-range: entry 0% entry 35%;
}

@keyframes optic-fade-slide {
  from {
    opacity: 0;
    transform: translateY(40px);
  }
  to {
    opacity: 1;
    transform: none;
  }
}

/* Responsive Media Queries */
@media (max-width: 968px) {
  .optic-burger-lbl {
    display: flex;
  }

  .optic-nav-shell {
    position: fixed;
    top: 60px;
    left: -100%;
    width: 100%;
    height: calc(100vh - 60px);
    background-color: var(--optic-deep-shade);
    flex-direction: column;
    justify-content: center;
    gap: 3rem;
    transition: left 0.4s ease;
    z-index: 998;
  }

  /* Checked mobile state */
  .optic-menu-toggle:checked ~ .optic-nav-shell {
    left: 0;
  }

  /* Hamburger transformation */
  .optic-menu-toggle:checked ~ .optic-burger-lbl span:nth-child(1) {
    transform: rotate(45deg) translate(5px, 6px);
  }

  .optic-menu-toggle:checked ~ .optic-burger-lbl span:nth-child(2) {
    opacity: 0;
  }

  .optic-menu-toggle:checked ~ .optic-burger-lbl span:nth-child(3) {
    transform: rotate(-45deg) translate(5px, -6px);
  }

  /* Preset C index.html adjustments */
  .optic-stepper-track {
    flex-direction: column;
    gap: 3rem;
  }

  .optic-stepper-track::before {
    left: 40px;
    top: 5%;
    bottom: 5%;
    width: 4px;
    height: 90%;
  }

  .optic-step-node {
    display: flex;
    align-items: flex-start;
    text-align: left;
    gap: 1.5rem;
  }

  .optic-node-indicator {
    margin: 0;
    flex-shrink: 0;
    width: 60px;
    height: 60px;
    font-size: 1.4rem;
  }

  .optic-node-text {
    padding: 0;
  }

  .optic-cta-flex {
    flex-direction: column;
    text-align: center;
  }

  /* Expert Page */
  .optic-bio-split {
    flex-direction: column;
    gap: 2.5rem;
  }

  /* Reserve Page */
  .optic-res-flex-grid {
    flex-direction: column;
    gap: 3rem;
  }

  .optic-form-column, .optic-info-column {
    width: 100%;
  }
}