@import url('https://fonts.googleapis.com/css2?family=Inter:wght@400;500;600&family=Raleway:wght@600;700;800&display=swap');

:root {
  --vista-aqua-bg: #f3f7f9;
  --vista-gradient: linear-gradient(135deg, #0e5e6f 0%, #3a8891 50%, #f2cd5c 100%);
  --vista-gradient-dark: linear-gradient(135deg, #0b4956 0%, #0e5e6f 100%);
  --iris-accent: #0e5e6f;
  --iris-accent-hover: #3a8891;
  --pupil-dark: #121c24;
  --pupil-light: #ffffff;
  --lens-surface: #ffffff;
  --lens-card-edge: rgba(14, 94, 111, 0.1);
  --cornea-shadow: 0 10px 30px -10px rgba(12, 53, 62, 0.15);
  --opti-border-radius: 16px;
  --opti-padding-compact: 6dvh;
  --opti-padding-normal: 10dvh;
  --opti-padding-spacious: 16dvh;
  --font-display: 'Raleway', sans-serif;
  --font-body: 'Inter', sans-serif;
}

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

body {
  font-family: var(--font-body);
  background-color: var(--vista-aqua-bg);
  color: var(--pupil-dark);
  line-height: 1.6;
  overflow-x: hidden;
}

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

/* Scroll Progress Tracker */
.opti-scroll-progress {
  position: fixed;
  top: 0;
  left: 0;
  height: 4px;
  width: 0%;
  background: var(--iris-accent-hover);
  z-index: 10000;
  animation: progress-grow linear;
  animation-timeline: scroll();
}

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

/* Header */
.opti-header-bar {
  background: var(--vista-gradient);
  color: var(--pupil-light);
  box-shadow: 0 4px 20px rgba(0, 0, 0, 0.15);
  position: sticky;
  top: 0;
  z-index: 999;
}

.opti-header-content {
  max-width: 1200px;
  margin: 0 auto;
  display: flex;
  justify-content: space-between;
  align-items: center;
  padding: 1rem 2rem;
}

.opti-logo-block {
  display: flex;
  align-items: center;
  gap: 0.75rem;
  font-family: var(--font-display);
  font-weight: 800;
  font-size: 1.5rem;
}

.opti-logo-icon {
  width: 40px;
  height: 40px;
  fill: var(--pupil-light);
}

.opti-nav-list {
  display: flex;
  gap: 2rem;
  list-style: none;
  align-items: center;
}

.opti-nav-link {
  font-family: var(--font-display);
  font-weight: 600;
  position: relative;
  padding: 0.5rem 0;
}

.opti-nav-link::after {
  content: '';
  position: absolute;
  bottom: 0;
  left: 0;
  width: 0;
  height: 2px;
  background-color: var(--pupil-light);
  transition: width 0.3s ease;
}

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

/* Mobile Menu Toggle */
.opti-menu-toggle {
  display: none;
}

.opti-menu-btn {
  display: none;
  cursor: pointer;
  flex-direction: column;
  gap: 6px;
  z-index: 1001;
}

.opti-menu-btn span {
  width: 25px;
  height: 3px;
  background-color: var(--pupil-light);
  transition: 0.3s;
}

/* Hero Section */
.opti-hero-canvas {
  position: relative;
  min-height: 85vh;
  display: flex;
  flex-direction: column;
  justify-content: center;
  align-items: center;
  text-align: center;
  padding: var(--opti-padding-normal) 2rem;
  background-size: cover;
  background-position: center;
  background-repeat: no-repeat;
  color: var(--pupil-light);
}

.opti-hero-overlay {
  position: absolute;
  top: 0;
  left: 0;
  width: 100%;
  height: 100%;
  background: radial-gradient(circle, rgba(14, 94, 111, 0.85) 0%, rgba(18, 28, 36, 0.95) 100%);
  z-index: 1;
}

.opti-hero-holder {
  position: relative;
  z-index: 2;
  max-width: 800px;
}

.opti-hero-holder h1 {
  font-family: var(--font-display);
  font-size: clamp(2.5rem, 5vw, 4rem);
  font-weight: 800;
  line-height: 1.2;
  margin-bottom: 1.5rem;
}

.opti-hero-holder p {
  font-size: clamp(1.1rem, 2vw, 1.3rem);
  margin-bottom: 2.5rem;
  opacity: 0.95;
}

/* Stat Blocks inside Hero */
.opti-stat-strip {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(200px, 1fr));
  gap: 1.5rem;
  width: 100%;
  max-width: 1000px;
  margin-top: 3rem;
  position: relative;
  z-index: 2;
}

.opti-stat-counter {
  background: rgba(255, 255, 255, 0.1);
  backdrop-filter: blur(10px);
  border: 1px rgba(255, 255, 255, 0.2) solid;
  padding: 1.5rem;
  border-radius: var(--opti-border-radius);
  box-shadow: var(--cornea-shadow);
}

.opti-stat-num {
  font-family: var(--font-display);
  font-size: 3rem;
  font-weight: 800;
  color: #f2cd5c;
  display: block;
}

.opti-stat-desc {
  font-size: 0.95rem;
  font-weight: 500;
}

/* Trust Logos */
.opti-trust-strip {
  width: 100%;
  background: rgba(18, 28, 36, 0.4);
  backdrop-filter: blur(5px);
  padding: 1.5rem 0;
  margin-top: 4rem;
  position: relative;
  z-index: 2;
}

.opti-trust-content {
  max-width: 1000px;
  margin: 0 auto;
  display: flex;
  justify-content: space-around;
  align-items: center;
  flex-wrap: wrap;
  gap: 2rem;
}

.opti-trust-logo {
  display: flex;
  align-items: center;
  gap: 0.5rem;
  font-family: var(--font-display);
  font-weight: 700;
  opacity: 0.7;
  font-size: 1.1rem;
}

.opti-trust-logo svg {
  width: 24px;
  height: 24px;
  fill: var(--pupil-light);
}

/* Button UI */
.opti-action-pill {
  display: inline-block;
  background: var(--vista-gradient);
  color: var(--pupil-light);
  font-family: var(--font-display);
  font-weight: 700;
  padding: 1rem 2.5rem;
  border-radius: 50px;
  box-shadow: 0 4px 15px rgba(14, 94, 111, 0.4);
  transition: transform 0.3s ease, box-shadow 0.3s ease;
  border: none;
  cursor: pointer;
}

.opti-action-pill:hover {
  transform: translateY(-3px);
  box-shadow: 0 6px 20px rgba(14, 94, 111, 0.6);
}

/* Content Carousel Segment */
.opti-content-panel {
  padding: var(--opti-padding-normal) 2rem;
  background: var(--lens-surface);
}

.opti-panel-limit {
  max-width: 1200px;
  margin: 0 auto;
}

.opti-panel-heading {
  text-align: center;
  font-family: var(--font-display);
  font-size: 2.5rem;
  margin-bottom: 3rem;
  color: var(--pupil-dark);
}

.opti-carousel-track {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 2rem;
}

.opti-carousel-item {
  background: var(--vista-aqua-bg);
  border-radius: var(--opti-border-radius);
  overflow: hidden;
  box-shadow: var(--cornea-shadow);
  border: 1px var(--lens-card-edge) solid;
  transition: transform 0.3s ease;
}

.opti-carousel-item:hover {
  transform: translateY(-5px);
}

.opti-card-visual {
  height: 200px;
  background-size: cover;
  background-position: center;
}

.opti-card-body {
  padding: 2rem;
}

.opti-card-body h3 {
  font-family: var(--font-display);
  font-size: 1.35rem;
  margin-bottom: 1rem;
  color: var(--iris-accent);
}

/* Feature Grid Area with Color-Flip on Hover */
.opti-features-matrix {
  padding: var(--opti-padding-normal) 2rem;
}

.opti-grid-gallery {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(300px, 1fr));
  gap: 2rem;
  max-width: 1200px;
  margin: 0 auto;
}

.opti-feature-box {
  background: var(--lens-surface);
  border-radius: var(--opti-border-radius);
  padding: 2.5rem;
  box-shadow: var(--cornea-shadow);
  border: 1px var(--lens-card-edge) solid;
  transition: all 0.4s cubic-bezier(0.165, 0.84, 0.44, 1);
  display: flex;
  flex-direction: column;
  gap: 1.25rem;
}

.opti-feature-box svg {
  width: 48px;
  height: 48px;
  fill: var(--iris-accent);
  transition: fill 0.4s ease;
}

.opti-feature-box h3 {
  font-family: var(--font-display);
  font-size: 1.4rem;
  color: var(--pupil-dark);
  transition: color 0.4s ease;
}

.opti-feature-box p {
  color: #4b5563;
  font-size: 0.95rem;
  transition: color 0.4s ease;
}

/* Hover Color-Flip */
.opti-feature-box:hover {
  background: var(--vista-gradient-dark);
  transform: translateY(-5px);
  box-shadow: 0 15px 35px rgba(11, 73, 86, 0.3);
}

.opti-feature-box:hover svg {
  fill: #f2cd5c;
}

.opti-feature-box:hover h3 {
  color: var(--pupil-light);
}

.opti-feature-box:hover p {
  color: rgba(255, 255, 255, 0.9);
}

/* How It Works - Numbered Process Bar */
.opti-process-strip {
  padding: var(--opti-padding-normal) 2rem;
  background: var(--lens-surface);
}

.opti-process-row {
  display: flex;
  justify-content: space-between;
  max-width: 1100px;
  margin: 3rem auto 0 auto;
  position: relative;
}

.opti-process-row::before {
  content: '';
  position: absolute;
  top: 30px;
  left: 10%;
  width: 80%;
  height: 3px;
  background: var(--lens-card-edge);
  z-index: 1;
}

.opti-step-node {
  position: relative;
  z-index: 2;
  text-align: center;
  flex: 1;
  padding: 0 1rem;
}

.opti-step-number {
  width: 60px;
  height: 60px;
  border-radius: 50%;
  background: var(--vista-gradient);
  color: var(--pupil-light);
  font-family: var(--font-display);
  font-size: 1.5rem;
  font-weight: 800;
  display: flex;
  justify-content: center;
  align-items: center;
  margin: 0 auto 1.5rem auto;
  box-shadow: var(--cornea-shadow);
}

.opti-step-node h4 {
  font-family: var(--font-display);
  font-size: 1.25rem;
  margin-bottom: 0.5rem;
  color: var(--pupil-dark);
}

.opti-step-node p {
  font-size: 0.9rem;
  color: #4b5563;
  max-width: 250px;
  margin: 0 auto;
}

/* CTA Strip */
.opti-action-banner {
  background: var(--vista-gradient-dark);
  color: var(--pupil-light);
  padding: 5rem 2rem;
}

.opti-action-holder {
  max-width: 1200px;
  margin: 0 auto;
  display: flex;
  justify-content: space-between;
  align-items: center;
  gap: 3rem;
  flex-wrap: wrap;
}

.opti-action-holder h2 {
  font-family: var(--font-display);
  font-size: clamp(1.8rem, 4vw, 2.8rem);
  font-weight: 800;
  flex: 1;
  min-width: 300px;
}

.opti-action-holder .opti-action-pill {
  background: var(--pupil-light);
  color: var(--iris-accent);
  box-shadow: 0 4px 15px rgba(0, 0, 0, 0.2);
}

.opti-action-holder .opti-action-pill:hover {
  background: #f2cd5c;
  color: var(--pupil-dark);
}

/* Footer & Disclaimer */
.opti-footer-wrap {
  background: var(--pupil-dark);
  color: var(--pupil-light);
  padding: 4rem 2rem 2rem 2rem;
}

.opti-footer-inner {
  max-width: 1200px;
  margin: 0 auto;
  display: flex;
  flex-direction: column;
  gap: 2.5rem;
}

.opti-footer-top {
  display: flex;
  justify-content: space-between;
  align-items: center;
  flex-wrap: wrap;
  gap: 2rem;
}

.opti-footer-links {
  display: flex;
  gap: 2rem;
  list-style: none;
  flex-wrap: wrap;
}

.opti-footer-links a:hover {
  color: #f2cd5c;
}

.opti-footer-disclaimer {
  font-size: 0.85rem;
  color: rgba(255, 255, 255, 0.6);
  border-top: 1px rgba(255, 255, 255, 0.1) solid;
  padding-top: 1.5rem;
  line-height: 1.7;
}

.opti-footer-base {
  display: flex;
  justify-content: space-between;
  align-items: center;
  font-size: 0.85rem;
  color: rgba(255, 255, 255, 0.4);
  flex-wrap: wrap;
  gap: 1rem;
}

/* Reserve Page Styles (2 column Preset F) */
.opti-reserve-zone {
  padding: var(--opti-padding-normal) 2rem;
  max-width: 1200px;
  margin: 0 auto;
  display: grid;
  grid-template-columns: 1fr 1.2fr;
  gap: 4rem;
}

.opti-reserve-info {
  position: sticky;
  top: 120px;
  height: fit-content;
}

.opti-reserve-info h2 {
  font-family: var(--font-display);
  font-size: 2.8rem;
  font-weight: 800;
  line-height: 1.2;
  margin-bottom: 1.5rem;
  color: var(--iris-accent);
}

.opti-bullets-stack {
  margin-top: 2rem;
  display: flex;
  flex-direction: column;
  gap: 1.5rem;
}

.opti-bullet-item {
  display: flex;
  gap: 1rem;
  align-items: flex-start;
}

.opti-bullet-icon {
  width: 24px;
  height: 24px;
  border-radius: 50%;
  background: var(--vista-gradient);
  display: flex;
  align-items: center;
  justify-content: center;
  color: var(--pupil-light);
  font-size: 0.8rem;
  font-weight: 800;
  flex-shrink: 0;
}

/* Form Shell */
.opti-form-shell {
  background: var(--lens-surface);
  padding: 3rem;
  border-radius: var(--opti-border-radius);
  box-shadow: var(--cornea-shadow);
  border: 1px var(--lens-card-edge) solid;
}

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

.opti-form-group label {
  display: block;
  font-weight: 600;
  margin-bottom: 0.5rem;
  font-size: 0.95rem;
}

.opti-form-input {
  width: 100%;
  padding: 0.85rem 1rem;
  border: 1.5px var(--lens-card-edge) solid;
  border-radius: 8px;
  font-family: var(--font-body);
  outline: none;
  transition: border-color 0.3s ease;
}

.opti-form-input:focus {
  border-color: var(--iris-accent);
}

.opti-form-checkbox {
  display: flex;
  align-items: flex-start;
  gap: 0.75rem;
  margin-top: 1rem;
}

.opti-form-checkbox input {
  margin-top: 0.25rem;
}

.opti-form-checkbox label {
  font-size: 0.85rem;
  color: #4b5563;
}

.opti-form-submit {
  width: 100%;
  margin-top: 1.5rem;
}

/* FAQ Accordion Area */
.opti-faq-wrap {
  padding: var(--opti-padding-normal) 2rem;
  max-width: 800px;
  margin: 0 auto;
}

.opti-faq-item {
  background: var(--lens-surface);
  margin-bottom: 1rem;
  border-radius: var(--opti-border-radius);
  box-shadow: var(--cornea-shadow);
  overflow: hidden;
  border: 1px var(--lens-card-edge) solid;
}

.opti-faq-trigger {
  padding: 1.5rem;
  font-family: var(--font-display);
  font-weight: 700;
  font-size: 1.1rem;
  color: var(--pupil-dark);
  cursor: pointer;
  display: block;
}

.opti-faq-content {
  padding: 0 1.5rem 1.5rem 1.5rem;
  color: #4b5563;
  font-size: 0.95rem;
}

/* Expert Page Custom Layout */
.opti-expert-grid {
  display: grid;
  grid-template-columns: 1fr 1.5fr;
  gap: 4rem;
  max-width: 1200px;
  margin: 0 auto;
  padding: var(--opti-padding-normal) 2rem;
  align-items: center;
}

.opti-expert-media {
  border-radius: var(--opti-border-radius);
  overflow: hidden;
  box-shadow: var(--cornea-shadow);
}

.opti-expert-media img {
  width: 100%;
  height: auto;
  display: block;
}

.opti-expert-bio {
  display: flex;
  flex-direction: column;
  gap: 1.5rem;
}

.opti-expert-bio h2 {
  font-family: var(--font-display);
  font-size: 2.8rem;
  color: var(--iris-accent);
}

.opti-expert-stats {
  display: grid;
  grid-template-columns: repeat(2, 1fr);
  gap: 1.5rem;
  max-width: 1200px;
  margin: 0 auto var(--opti-padding-normal) auto;
  padding: 0 2rem;
}

/* Legal Pages Styling */
.opti-legal-text {
  max-width: 800px;
  margin: 0 auto;
  padding: var(--opti-padding-normal) 2rem;
}

.opti-legal-text h1 {
  font-family: var(--font-display);
  font-size: 3rem;
  margin-bottom: 2rem;
  text-align: center;
}

.opti-legal-text h2 {
  font-family: var(--font-display);
  font-size: 1.8rem;
  margin: 2rem 0 1rem 0;
}

.opti-legal-text p {
  margin-bottom: 1.5rem;
  color: #4b5563;
}

/* Thank You Page Styling */
.opti-thank-space {
  text-align: center;
  padding: var(--opti-padding-spacious) 2rem;
  max-width: 600px;
  margin: 0 auto;
  display: flex;
  flex-direction: column;
  align-items: center;
  gap: 2rem;
}

.opti-thank-icon {
  width: 80px;
  height: 80px;
  background: var(--vista-gradient);
  border-radius: 50%;
  display: flex;
  align-items: center;
  justify-content: center;
  box-shadow: var(--cornea-shadow);
}

.opti-thank-icon svg {
  width: 40px;
  height: 40px;
  fill: var(--pupil-light);
}

.opti-thank-space h1 {
  font-family: var(--font-display);
  font-size: 3rem;
}

/* Cookie Banner Styling */
.opti-cookie-banner {
  position: fixed;
  bottom: 0;
  left: 0;
  width: 100%;
  background: var(--pupil-dark);
  color: var(--pupil-light);
  padding: 1.5rem 2rem;
  z-index: 9999;
  box-shadow: 0 -4px 20px rgba(0, 0, 0, 0.2);
  display: none;
}

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

.opti-cookie-text {
  font-size: 0.9rem;
  flex: 1;
  min-width: 250px;
}

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

.opti-cookie-btn {
  padding: 0.6rem 1.5rem;
  border-radius: 20px;
  font-weight: 600;
  font-size: 0.85rem;
  cursor: pointer;
  border: none;
  font-family: var(--font-display);
}

.opti-cookie-accept {
  background: var(--iris-accent);
  color: var(--pupil-light);
}

.opti-cookie-decline {
  background: transparent;
  color: var(--pupil-light);
  border: 1px rgba(255, 255, 255, 0.3) solid;
}

/* Scroll-driven animations viewport view dynamic effects */
.opti-reveal-item {
  animation: opti-fade-in-slide linear both;
  animation-timeline: view();
  animation-range: entry 10% entry 40%;
}

@keyframes opti-fade-in-slide {
  from {
    opacity: 0;
    transform: translateY(30px);
  }
  to {
    opacity: 1;
    transform: translateY(0);
  }
}

/* Responsive CSS */
@media (max-width: 992px) {
  .opti-carousel-track {
    grid-template-columns: 1fr;
  }
  .opti-reserve-zone {
    grid-template-columns: 1fr;
    gap: 3rem;
  }
  .opti-expert-grid {
    grid-template-columns: 1fr;
    gap: 3rem;
  }
  .opti-expert-stats {
    grid-template-columns: 1fr;
  }
  .opti-action-holder {
    flex-direction: column;
    text-align: center;
  }
}

@media (max-width: 768px) {
  .opti-menu-btn {
    display: flex;
  }
  .opti-nav-list {
    position: fixed;
    top: 72px;
    right: -100%;
    width: 250px;
    height: calc(100vh - 72px);
    background: var(--pupil-dark);
    flex-direction: column;
    padding: 3rem 2rem;
    transition: right 0.3s ease;
    box-shadow: -5px 0 15px rgba(0,0,0,0.2);
  }
  .opti-menu-toggle:checked ~ .opti-nav-list {
    right: 0;
  }
  .opti-process-row {
    flex-direction: column;
    gap: 3rem;
  }
  .opti-process-row::before {
    display: none;
  }
  .opti-stat-strip {
    grid-template-columns: 1fr;
  }
}