/* Custom CSS Variables - Specific Thematic Naming */
:root {
  --opti-bg-light: #f8fafc;
  --opti-bg-dark: #0f172a;
  --opti-brand-primary: #ff5a36; /* Vibrant Coral-Red */
  --opti-brand-secondary: #2e0854; /* Deep Purple */
  --opti-accent-teal: #00f3d1; /* Neon Teal */
  --opti-accent-yellow: #ffd000; /* Sunny yellow */
  
  --opti-text-dark: #1e293b;
  --opti-text-light: #f1f5f9;
  
  --opti-gradient-primary: linear-gradient(135deg, var(--opti-brand-secondary) 0%, var(--opti-brand-primary) 100%);
  --opti-gradient-visual: linear-gradient(180deg, rgba(46, 8, 84, 0.8) 0%, rgba(15, 23, 42, 0.95) 100%);
  
  --font-display: 'Oswald', sans-serif;
  --font-body: 'Poppins', sans-serif;
  
  --opti-radius-soft: 16px;
  --opti-shadow-standard: 0 10px 30px rgba(0, 0, 0, 0.12);
}

/* Base resets & styles */
* {
  box-sizing: border-box;
  margin: 0;
  padding: 0;
}

body.opti-theme-body {
  font-family: var(--font-body);
  background-color: var(--opti-bg-light);
  color: var(--opti-text-dark);
  line-height: 1.6;
  overflow-x: hidden;
}

/* Scroll Progress Bar CSS-only */
.opti-scroll-tracker {
  position: fixed;
  top: 0;
  left: 0;
  height: 4px;
  background-color: var(--opti-accent-teal);
  z-index: 10000;
  width: 0%;
  animation: opti-bar-grow linear;
  animation-timeline: scroll();
}

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

/* Max Container Width */
.opti-max-wrap {
  width: 100%;
  max-width: 1200px;
  margin: 0 auto;
  padding: 0 1.5rem;
}

/* Header & Nav styles (Preset C: Accent background, white links) */
.opti-header-bar {
  background: var(--opti-brand-primary);
  color: #ffffff;
  position: sticky;
  top: 0;
  z-index: 1000;
  box-shadow: 0 4px 20px rgba(0, 0, 0, 0.1);
}

.opti-header-bar .opti-max-wrap {
  display: flex;
  justify-content: space-between;
  align-items: center;
  height: 70px;
}

.opti-brand-logo {
  display: flex;
  align-items: center;
  gap: 0.75rem;
  text-decoration: none;
  color: #ffffff;
  font-family: var(--font-display);
  font-weight: 700;
  font-size: 1.5rem;
  letter-spacing: 1px;
}

.opti-brand-logo svg {
  width: 28px;
  height: 28px;
}

/* Nav Menu and mobile functionality (CSS only) */
.opti-nav-list {
  display: flex;
  gap: 2rem;
  align-items: center;
}

.opti-nav-link {
  color: rgba(255, 255, 255, 0.85);
  text-decoration: none;
  font-family: var(--font-display);
  font-size: 1.1rem;
  text-transform: uppercase;
  font-weight: 500;
  transition: color 0.3s;
  padding: 0.25rem 0;
  border-bottom: 2px solid transparent;
}

.opti-nav-link:hover,
.opti-active-nav {
  color: var(--opti-accent-yellow);
  border-bottom: 2px solid var(--opti-accent-yellow);
}

.opti-toggle-input {
  display: none;
}

.opti-hamburger-btn {
  display: none;
  flex-direction: column;
  gap: 6px;
  cursor: pointer;
  padding: 0.5rem;
}

.opti-hamburger-btn span {
  display: block;
  width: 25px;
  height: 3px;
  background-color: #ffffff;
  transition: transform 0.3s, opacity 0.3s;
}

@media (max-width: 768px) {
  .opti-hamburger-btn {
    display: flex;
  }
  
  .opti-nav-list {
    position: absolute;
    top: 70px;
    left: 0;
    right: 0;
    background: var(--opti-brand-primary);
    flex-direction: column;
    padding: 2rem;
    gap: 1.5rem;
    transform: translateY(-150%);
    opacity: 0;
    transition: transform 0.4s ease, opacity 0.4s ease;
    box-shadow: 0 10px 20px rgba(0, 0, 0, 0.15);
  }
  
  .opti-toggle-input:checked ~ .opti-nav-list {
    transform: translateY(0);
    opacity: 1;
  }

  .opti-toggle-input:checked ~ .opti-hamburger-btn span:nth-child(1) {
    transform: translateY(9px) rotate(45deg);
  }
  
  .opti-toggle-input:checked ~ .opti-hamburger-btn span:nth-child(2) {
    opacity: 0;
  }

  .opti-toggle-input:checked ~ .opti-hamburger-btn span:nth-child(3) {
    transform: translateY(-9px) rotate(-45deg);
  }
}

/* Typography styles */
.opti-head-title {
  font-family: var(--font-display);
  font-weight: 700;
  font-size: 2.5rem;
  letter-spacing: 0.5px;
  color: var(--opti-brand-secondary);
  text-transform: uppercase;
  margin-bottom: 1.5rem;
  line-height: 1.2;
}

.opti-prose {
  font-family: var(--font-body);
  font-size: 1rem;
  color: var(--opti-text-dark);
  margin-bottom: 1.25rem;
  font-weight: 300;
}

/* Hero Section (Preset C) */
.opti-hero-viewport {
  position: relative;
  min-height: 80vh;
  display: flex;
  align-items: center;
  overflow: hidden;
  padding: 6dvh 0;
}

.opti-hero-num-back {
  position: absolute;
  right: 5%;
  bottom: 0px;
  font-family: var(--font-display);
  font-size: 24rem;
  font-weight: 900;
  opacity: 0.05;
  color: #fff;
  line-height: 1;
  pointer-events: none;
  z-index: 1;
}

.opti-hero-shape-1 {
  position: absolute;
  top: -10%;
  right: -5%;
  width: 400px;
  height: 400px;
  border-radius: 50%;
  background: var(--opti-accent-teal);
  opacity: 0.15;
  pointer-events: none;
  filter: blur(50px);
}

.opti-hero-shape-2 {
  position: absolute;
  bottom: -15%;
  left: 10%;
  width: 300px;
  height: 300px;
  background: var(--opti-accent-yellow);
  opacity: 0.12;
  transform: rotate(45deg);
  pointer-events: none;
  filter: blur(40px);
}

.opti-hero-inner {
  position: relative;
  z-index: 5;
}

.opti-hero-messaging {
  max-width: 750px;
}

.opti-hero-heading {
  font-family: var(--font-display);
  font-size: 4rem;
  font-weight: 700;
  color: #ffffff;
  line-height: 1.1;
  text-transform: uppercase;
  margin-bottom: 1.5rem;
  text-shadow: 0 4px 10px rgba(0, 0, 0, 0.15);
}

@media (max-width: 768px) {
  .opti-hero-heading {
    font-size: 2.8rem;
  }
  .opti-hero-num-back {
    font-size: 12rem;
  }
}

.opti-hero-subhead {
  font-family: var(--font-body);
  font-size: 1.25rem;
  color: rgba(255, 255, 255, 0.9);
  margin-bottom: 2.5rem;
  font-weight: 300;
}

.opti-button-link {
  display: inline-block;
  font-family: var(--font-display);
  font-size: 1.1rem;
  font-weight: 600;
  text-transform: uppercase;
  text-decoration: none;
  padding: 1rem 2.5rem;
  transition: transform 0.3s, background-color 0.3s, box-shadow 0.3s;
}

.opti-button-pill {
  border-radius: 999px;
  background-color: var(--opti-accent-teal);
  color: var(--opti-brand-secondary);
}

.opti-button-link:hover {
  transform: translateY(-3px);
  box-shadow: 0 8px 25px rgba(0, 243, 209, 0.4);
}

/* Content Section with Diagonal Clip Path (Preset C) */
.opti-clip-wrapper {
  position: relative;
  padding: 12dvh 0;
  background-size: cover;
  background-position: center;
  background-attachment: fixed;
  clip-path: polygon(0 6dvh, 100% 0, 100% calc(100% - 6dvh), 0 100%);
}

.opti-clip-overlay {
  position: absolute;
  top: 0;
  left: 0;
  width: 100%;
  height: 100%;
  background: var(--opti-gradient-visual);
  z-index: 1;
}

.opti-clip-content {
  position: relative;
  z-index: 3;
  color: #ffffff;
  max-width: 800px;
}

.opti-clip-content .opti-head-title {
  color: var(--opti-accent-teal);
}

.opti-clip-content .opti-prose {
  color: rgba(255, 255, 255, 0.9);
  font-size: 1.1rem;
}

/* General Zone Block padding scale: spacious */
.opti-zone-block {
  padding: 10dvh 0;
}

.opti-bg-light-zone {
  background-color: #f1f5f9;
}

.opti-bg-dark-zone {
  background-color: var(--opti-brand-secondary);
  color: #fff;
}

.opti-bg-dark-zone .opti-head-title {
  color: #fff;
}

.opti-bg-dark-zone .opti-prose {
  color: #cbd5e1;
}

/* Advantages grid (Preset C: sequence numbers instead of icons) */
.opti-advantages-matrix {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(300px, 1fr));
  gap: 2.5rem;
  margin-top: 3.5rem;
}

.opti-advantage-tile {
  padding: 1rem;
  transition: transform 0.3s;
}

.opti-bold-num {
  font-family: var(--font-display);
  font-size: 4rem;
  font-weight: 900;
  color: var(--opti-brand-primary);
  line-height: 1;
  margin-bottom: 0.5rem;
}

.opti-tile-heading {
  font-family: var(--font-display);
  font-size: 1.6rem;
  font-weight: 700;
  margin-bottom: 0.75rem;
  color: var(--opti-brand-secondary);
}

/* How It Works horizontal track (Preset C) */
.opti-step-track {
  display: flex;
  justify-content: space-between;
  margin-top: 4rem;
  position: relative;
  gap: 2rem;
}

.opti-step-connector {
  position: absolute;
  top: 35px;
  left: 5%;
  right: 5%;
  height: 4px;
  background-color: var(--opti-brand-primary);
  z-index: 1;
}

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

.opti-step-circle {
  width: 70px;
  height: 70px;
  border-radius: 50%;
  margin: 0 auto 1.5rem auto;
  display: flex;
  align-items: center;
  justify-content: center;
  font-family: var(--font-display);
  font-size: 1.8rem;
  font-weight: 700;
  transition: background-color 0.3s, transform 0.3s;
}

.opti-step-filled {
  background-color: var(--opti-brand-primary);
  color: #ffffff;
}

.opti-step-outline {
  background-color: var(--opti-bg-light);
  border: 4px solid var(--opti-brand-primary);
  color: var(--opti-brand-primary);
}

.opti-step-title {
  font-family: var(--font-display);
  font-size: 1.4rem;
  margin-bottom: 0.5rem;
  color: var(--opti-brand-secondary);
}

@media (max-width: 768px) {
  .opti-step-track {
    flex-direction: column;
    align-items: center;
  }
  .opti-step-connector {
    display: none;
  }
}

/* CTA Strip (Preset C: flex justify apart) */
.opti-action-strip {
  background-color: var(--opti-bg-dark);
  color: #ffffff;
  padding: 6dvh 0;
}

.opti-action-inner {
  display: flex;
  justify-content: space-between;
  align-items: center;
  gap: 2rem;
}

.opti-action-heading {
  font-family: var(--font-display);
  font-size: 2.2rem;
  font-weight: 700;
  line-height: 1.2;
  max-width: 650px;
}

@media (max-width: 768px) {
  .opti-action-inner {
    flex-direction: column;
    text-align: center;
  }
}

/* Split content layout on Expert Page */
.opti-split-grid {
  display: grid;
  grid-template-columns: 55% 45%;
  gap: 2.5rem;
  align-items: center;
}

.opti-split-visual {
  height: 400px;
  background-size: cover;
  background-position: center;
  border-radius: var(--opti-radius-soft);
  box-shadow: var(--opti-shadow-standard);
}

@media (max-width: 768px) {
  .opti-split-grid {
    grid-template-columns: 1fr;
  }
  .opti-split-visual {
    height: 250px;
  }
}

/* Grid of stats */
.opti-stat-row {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(200px, 1fr));
  gap: 2rem;
  text-align: center;
}

.opti-stat-card {
  padding: 1.5rem;
}

.opti-stat-num {
  font-family: var(--font-display);
  font-size: 3.5rem;
  font-weight: 700;
  color: var(--opti-accent-teal);
  line-height: 1.1;
  margin-bottom: 0.5rem;
}

.opti-stat-label {
  font-family: var(--font-body);
  font-size: 0.95rem;
  font-weight: 400;
  opacity: 0.85;
}

/* Reserve Page Split Grid */
.opti-booking-layout {
  display: grid;
  grid-template-columns: 60% 40%;
  gap: 3rem;
  margin-top: 2rem;
}

@media (max-width: 992px) {
  .opti-booking-layout {
    grid-template-columns: 1fr;
  }
}

.opti-booking-form-box {
  background: #ffffff;
  padding: 2.5rem;
  border-radius: var(--opti-radius-soft);
  box-shadow: var(--opti-shadow-standard);
}

.opti-form-element {
  margin-top: 2rem;
}

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

.opti-form-label {
  display: block;
  font-family: var(--font-display);
  font-size: 1rem;
  text-transform: uppercase;
  margin-bottom: 0.5rem;
  color: var(--opti-brand-secondary);
}

.opti-form-input {
  width: 100%;
  padding: 0.75rem 1rem;
  font-family: var(--font-body);
  font-size: 1rem;
  border: 2px solid #cbd5e1;
  border-radius: 8px;
  background-color: #ffffff;
  transition: border-color 0.3s;
}

.opti-form-input:focus {
  outline: none;
  border-color: var(--opti-brand-primary);
}

.opti-textarea {
  resize: vertical;
  min-height: 120px;
}

.opti-form-consent {
  display: flex;
  gap: 0.75rem;
  align-items: flex-start;
  margin-bottom: 2rem;
  font-family: var(--font-body);
  font-size: 0.85rem;
}

.opti-form-consent input {
  margin-top: 3px;
}

.opti-form-consent a {
  color: var(--opti-brand-primary);
}

.opti-mail-link {
  color: var(--opti-brand-primary);
  font-weight: bold;
  text-decoration: none;
  font-size: 1.1rem;
}

/* Sidebar info cards */
.opti-sidebar-card {
  display: flex;
  gap: 1.25rem;
  background-color: #ffffff;
  padding: 1.5rem;
  border-radius: var(--opti-radius-soft);
  margin-top: 1.5rem;
  box-shadow: 0 4px 15px rgba(0, 0, 0, 0.05);
  border-left: 4px solid var(--opti-brand-primary);
}

.opti-sidebar-icon {
  width: 48px;
  height: 48px;
  flex-shrink: 0;
  color: var(--opti-brand-primary);
}

.opti-sidebar-card-title {
  font-family: var(--font-display);
  font-size: 1.25rem;
  margin-bottom: 0.5rem;
  color: var(--opti-brand-secondary);
}

.opti-sidebar-list {
  list-style: none;
  padding-left: 0;
}

.opti-sidebar-list li {
  font-family: var(--font-body);
  font-size: 0.85rem;
  position: relative;
  padding-left: 1.25rem;
  margin-bottom: 0.25rem;
  color: var(--opti-text-dark);
}

.opti-sidebar-list li::before {
  content: "•";
  color: var(--opti-brand-primary);
  font-size: 1.2rem;
  position: absolute;
  left: 0;
  top: -2px;
}

/* FAQ accordion layout (always open blocks) */
.opti-faq-container {
  display: flex;
  flex-direction: column;
  gap: 1.5rem;
  margin-top: 3rem;
}

.opti-faq-card {
  background-color: #ffffff;
  padding: 1.5rem 2rem;
  border-radius: var(--opti-radius-soft);
  box-shadow: 0 4px 15px rgba(0,0,0,0.03);
}

.opti-faq-q {
  font-family: var(--font-display);
  font-size: 1.25rem;
  color: var(--opti-brand-secondary);
  margin-bottom: 0.75rem;
}

/* Cookie toast style */
.opti-cookie-toast {
  position: fixed;
  bottom: 0;
  left: 0;
  right: 0;
  background-color: var(--opti-bg-dark);
  padding: 1.5rem;
  border-top: 3px solid var(--opti-accent-teal);
  box-shadow: 0 -10px 40px rgba(0, 0, 0, 0.3);
  z-index: 9999;
  display: none;
  justify-content: space-between;
  align-items: center;
  flex-wrap: wrap;
  gap: 1rem;
}

.opti-show-banner {
  display: flex !important;
}

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

.opti-cookie-btn {
  padding: 0.75rem 1.75rem;
  font-family: var(--font-display);
  font-weight: 600;
  text-transform: uppercase;
  border-radius: 999px;
  border: none;
  cursor: pointer;
  transition: transform 0.2s;
}

.opti-cookie-btn:hover {
  transform: scale(1.05);
}

.opti-accept {
  background-color: var(--opti-accent-teal);
  color: var(--opti-bg-dark);
}

.opti-decline {
  background-color: transparent;
  border: 2px solid #fff;
  color: #fff;
}

/* Clean Legal Doc style */
.opti-legal-doc-wrap {
  padding: 8dvh 0;
}

.opti-legal-doc-wrap .opti-head-title {
  border-bottom: 2px solid var(--opti-brand-primary);
  padding-bottom: 1rem;
  margin-bottom: 2rem;
}

/* Footer Section styling */
.opti-footer-bar {
  background-color: var(--opti-bg-dark);
  color: #ffffff;
  padding: 6rem 0 3rem 0;
  text-align: center;
}

.opti-footer-bar .opti-max-wrap {
  display: flex;
  flex-direction: column;
  align-items: center;
}

.opti-disclaimer {
  font-family: var(--font-body);
  font-size: 0.8rem;
  color: #94a3b8;
  max-width: 800px;
  line-height: 1.6;
  margin-bottom: 2rem;
}

.opti-footer-links {
  display: flex;
  gap: 1.5rem;
  justify-content: center;
  flex-wrap: wrap;
  margin-bottom: 2rem;
}

.opti-footer-links a {
  color: #cbd5e1;
  font-family: var(--font-display);
  text-transform: uppercase;
  font-size: 0.9rem;
  text-decoration: none;
  transition: color 0.3s;
}

.opti-footer-links a:hover {
  color: var(--opti-accent-teal);
}

.opti-copyright {
  font-family: var(--font-body);
  font-size: 0.8rem;
  color: #64748b;
}

/* Viewport Scroll Entry Keyframe animation (Without JS) */
@keyframes opti-reveal {
  from {
    opacity: 0;
    transform: translateY(50px);
  }
  to {
    opacity: 1;
    transform: none;
  }
}

.opti-zone-block,
.opti-clip-wrapper {
  animation: opti-reveal both;
  animation-timeline: view();
  animation-range: entry 10% entry 40%;
}