/* ==========================================================================
   LUMEA VEDERII - Monochrome Modern Editorial CSS
   Theme: Black, White, Grayscale
   Compliance: Fully responsive, high contrast, clean UX
   ========================================================================== */

:root {
  --color-black: #0d0d0d;
  --color-offblack: #1a1a1a;
  --color-darkgray: #333333;
  --color-midgray: #666666;
  --color-lightgray: #e5e5e5;
  --color-bglight: #f8f8f8;
  --color-white: #ffffff;
  --color-border: #d1d1d1;
  
  --font-heading: 'Georgia', 'Playfair Display', serif;
  --font-body: -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto, Helvetica, Arial, sans-serif;
  
  --max-width: 1200px;
  --header-height: 80px;
  --transition-fast: 0.2s ease;
  --transition-normal: 0.3s ease;
}

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

html {
  scroll-behavior: smooth;
  font-size: 16px;
}

body {
  font-family: var(--font-body);
  background-color: var(--color-white);
  color: var(--color-black);
  line-height: 1.65;
  -webkit-font-smoothing: antialiased;
}

a {
  color: var(--color-black);
  text-decoration: none;
  transition: opacity var(--transition-fast);
}

a:hover {
  opacity: 0.7;
}

img {
  max-width: 100%;
  height: auto;
  display: block;
}

/* --- Container --- */
.container {
  width: 100%;
  max-width: var(--max-width);
  margin: 0 auto;
  padding: 0 20px;
}

/* --- Top Compliance Bar --- */
.top-notice-bar {
  background-color: var(--color-black);
  color: var(--color-lightgray);
  font-size: 0.82rem;
  text-align: center;
  padding: 8px 15px;
  letter-spacing: 0.5px;
  border-bottom: 1px solid var(--color-darkgray);
}

/* --- Header / Navigation --- */
.site-header {
  position: sticky;
  top: 0;
  z-index: 1000;
  background-color: rgba(255, 255, 255, 0.96);
  backdrop-filter: blur(8px);
  border-bottom: 1px solid var(--color-lightgray);
  height: var(--header-height);
  display: flex;
  align-items: center;
}

.header-inner {
  display: flex;
  align-items: center;
  justify-content: space-between;
  width: 100%;
}

.brand-logo {
  display: flex;
  align-items: center;
  gap: 12px;
}

.logo-text {
  font-family: var(--font-heading);
  font-size: 1.6rem;
  font-weight: 700;
  letter-spacing: -0.5px;
  color: var(--color-black);
}

.logo-tagline {
  font-size: 0.75rem;
  text-transform: uppercase;
  letter-spacing: 2px;
  color: var(--color-midgray);
  display: block;
}

.main-nav ul {
  display: flex;
  list-style: none;
  gap: 28px;
  align-items: center;
}

.main-nav a {
  font-size: 0.95rem;
  font-weight: 500;
  letter-spacing: 0.3px;
  padding: 6px 0;
  position: relative;
}

.main-nav a.active::after,
.main-nav a:hover::after {
  content: '';
  position: absolute;
  bottom: 0;
  left: 0;
  width: 100%;
  height: 2px;
  background-color: var(--color-black);
}

.nav-cta-btn {
  display: inline-block;
  background-color: var(--color-black);
  color: var(--color-white) !important;
  padding: 10px 20px !important;
  border-radius: 4px;
  font-weight: 600 !important;
  transition: background-color var(--transition-fast) !important;
}

.nav-cta-btn:hover {
  background-color: var(--color-darkgray);
  opacity: 1 !important;
}

.mobile-nav-toggle {
  display: none;
  background: none;
  border: none;
  font-size: 1.5rem;
  cursor: pointer;
  color: var(--color-black);
}

/* --- Typography Helpers --- */
h1, h2, h3, h4 {
  font-family: var(--font-heading);
  color: var(--color-black);
  line-height: 1.25;
}

h1 {
  font-size: 2.8rem;
  margin-bottom: 20px;
}

h2 {
  font-size: 2.1rem;
  margin-bottom: 18px;
}

h3 {
  font-size: 1.5rem;
  margin-bottom: 14px;
}

p {
  margin-bottom: 18px;
  color: var(--color-darkgray);
}

.lead-text {
  font-size: 1.2rem;
  font-weight: 400;
  color: var(--color-darkgray);
  line-height: 1.7;
}

.section-tag {
  display: inline-block;
  text-transform: uppercase;
  font-size: 0.78rem;
  font-weight: 700;
  letter-spacing: 2px;
  color: var(--color-midgray);
  margin-bottom: 10px;
}

/* --- Hero Section --- */
.hero-section {
  padding: 70px 0 60px;
  background-color: var(--color-bglight);
  border-bottom: 1px solid var(--color-lightgray);
}

.hero-grid {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 50px;
  align-items: center;
}

.hero-content h1 {
  font-size: 2.7rem;
  margin-bottom: 24px;
}

.author-badge {
  display: flex;
  align-items: center;
  gap: 15px;
  margin-top: 25px;
  padding: 15px;
  background-color: var(--color-white);
  border: 1px solid var(--color-lightgray);
  border-radius: 6px;
}

.author-avatar {
  width: 55px;
  height: 55px;
  border-radius: 50%;
  object-fit: cover;
  border: 1px solid var(--color-darkgray);
}

.author-info h4 {
  font-size: 1rem;
  margin-bottom: 2px;
}

.author-info p {
  font-size: 0.85rem;
  color: var(--color-midgray);
  margin: 0;
}

.hero-image-wrapper {
  position: relative;
}

.hero-image-wrapper img {
  border-radius: 8px;
  box-shadow: 0 10px 30px rgba(0,0,0,0.08);
  border: 1px solid var(--color-lightgray);
}

/* --- Buttons --- */
.btn {
  display: inline-block;
  padding: 14px 28px;
  font-size: 1rem;
  font-weight: 600;
  text-align: center;
  border-radius: 4px;
  cursor: pointer;
  transition: all var(--transition-fast);
  border: 2px solid transparent;
}

.btn-primary {
  background-color: var(--color-black);
  color: var(--color-white);
  border-color: var(--color-black);
}

.btn-primary:hover {
  background-color: var(--color-darkgray);
  border-color: var(--color-darkgray);
  opacity: 1;
}

.btn-secondary {
  background-color: transparent;
  color: var(--color-black);
  border-color: var(--color-black);
}

.btn-secondary:hover {
  background-color: var(--color-black);
  color: var(--color-white);
  opacity: 1;
}

/* --- Article Cards Grid --- */
.articles-section {
  padding: 80px 0;
}

.section-header {
  text-align: center;
  max-width: 700px;
  margin: 0 auto 50px;
}

.articles-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(320px, 1fr));
  gap: 35px;
}

.article-card {
  background-color: var(--color-white);
  border: 1px solid var(--color-lightgray);
  border-radius: 8px;
  overflow: hidden;
  transition: transform var(--transition-normal), box-shadow var(--transition-normal);
  display: flex;
  flex-direction: column;
}

.article-card:hover {
  transform: translateY(-5px);
  box-shadow: 0 12px 25px rgba(0,0,0,0.06);
}

.article-card-body {
  padding: 28px;
  display: flex;
  flex-direction: column;
  flex-grow: 1;
}

.article-meta {
  font-size: 0.8rem;
  text-transform: uppercase;
  letter-spacing: 1px;
  color: var(--color-midgray);
  margin-bottom: 12px;
}

.article-title {
  font-size: 1.35rem;
  margin-bottom: 12px;
}

.article-excerpt {
  font-size: 0.95rem;
  color: var(--color-darkgray);
  flex-grow: 1;
  margin-bottom: 20px;
}

.read-more-link {
  font-weight: 600;
  font-size: 0.9rem;
  display: inline-flex;
  align-items: center;
  gap: 6px;
  border-bottom: 1px solid var(--color-black);
  width: fit-content;
  padding-bottom: 2px;
}

/* --- Interactive Tool Section (Quiz) --- */
.interactive-section {
  padding: 80px 0;
  background-color: var(--color-bglight);
  border-top: 1px solid var(--color-lightgray);
  border-bottom: 1px solid var(--color-lightgray);
}

.quiz-container {
  max-width: 750px;
  margin: 0 auto;
  background-color: var(--color-white);
  border: 1px solid var(--color-lightgray);
  border-radius: 8px;
  padding: 40px;
  box-shadow: 0 8px 24px rgba(0,0,0,0.04);
}

.quiz-progress {
  height: 4px;
  background-color: var(--color-lightgray);
  border-radius: 2px;
  margin-bottom: 30px;
  overflow: hidden;
}

.quiz-progress-bar {
  height: 100%;
  width: 25%;
  background-color: var(--color-black);
  transition: width 0.3s ease;
}

.quiz-step {
  display: none;
}

.quiz-step.active {
  display: block;
}

.quiz-question {
  font-size: 1.4rem;
  margin-bottom: 24px;
}

.quiz-options {
  display: flex;
  flex-direction: column;
  gap: 14px;
  margin-bottom: 28px;
}

.quiz-option-btn {
  padding: 16px 20px;
  background-color: var(--color-bglight);
  border: 1px solid var(--color-border);
  border-radius: 6px;
  text-align: left;
  font-size: 1rem;
  cursor: pointer;
  transition: all var(--transition-fast);
  font-family: var(--font-body);
}

.quiz-option-btn:hover, .quiz-option-btn.selected {
  background-color: var(--color-black);
  color: var(--color-white);
  border-color: var(--color-black);
}

.quiz-result {
  display: none;
  text-align: center;
}

.quiz-result.active {
  display: block;
}

.score-badge {
  display: inline-block;
  padding: 8px 18px;
  background-color: var(--color-black);
  color: var(--color-white);
  font-weight: 700;
  border-radius: 20px;
  margin-bottom: 20px;
}

/* --- Vision Simulator Slider --- */
.simulator-section {
  padding: 80px 0;
}

.simulator-box {
  max-width: 800px;
  margin: 0 auto;
  position: relative;
  overflow: hidden;
  border-radius: 8px;
  border: 1px solid var(--color-border);
  user-select: none;
}

.simulator-images {
  position: relative;
  width: 100%;
  height: 380px;
  background-color: #111;
}

.sim-clear-text, .sim-blurred-text {
  position: absolute;
  top: 0;
  left: 0;
  width: 100%;
  height: 100%;
  display: flex;
  flex-direction: column;
  justify-content: center;
  align-items: center;
  padding: 30px;
  text-align: center;
}

.sim-clear-text {
  background-color: var(--color-white);
  color: var(--color-black);
}

.sim-blurred-text {
  background-color: #f0f0f0;
  color: #555;
  filter: blur(4px);
  position: absolute;
  top: 0;
  left: 0;
  right: 0;
  bottom: 0;
  z-index: 1;
}

.slider-handle {
  position: absolute;
  top: 0;
  bottom: 0;
  width: 4px;
  background-color: var(--color-black);
  cursor: ew-resize;
  z-index: 10;
}

.handle-button {
  position: absolute;
  top: 50%;
  left: 50%;
  transform: translate(-50%, -50%);
  width: 36px;
  height: 36px;
  background-color: var(--color-black);
  color: var(--color-white);
  border-radius: 50%;
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 0.8rem;
  box-shadow: 0 4px 10px rgba(0,0,0,0.3);
}

/* --- Offer / Product Page Styling --- */
.product-hero-section {
  padding: 70px 0;
}

.product-grid {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 60px;
  align-items: start;
}

.product-gallery {
  position: sticky;
  top: 100px;
}

.product-main-img {
  border: 1px solid var(--color-lightgray);
  border-radius: 8px;
  background-color: var(--color-bglight);
  padding: 20px;
}

.product-details .price-tag {
  display: flex;
  align-items: baseline;
  gap: 15px;
  margin: 20px 0;
}

.current-price {
  font-size: 2.2rem;
  font-weight: 700;
  color: var(--color-black);
}

.old-price {
  font-size: 1.3rem;
  text-decoration: line-through;
  color: var(--color-midgray);
}

.badge-discount {
  background-color: var(--color-black);
  color: var(--color-white);
  font-size: 0.8rem;
  font-weight: 700;
  padding: 4px 10px;
  border-radius: 3px;
}

/* --- Clean Lead Form Styling --- */
.lead-form-box {
  background-color: var(--color-bglight);
  border: 2px solid var(--color-black);
  border-radius: 8px;
  padding: 35px;
  margin-top: 30px;
}

.form-group {
  margin-bottom: 20px;
}

.form-group label {
  display: block;
  font-weight: 600;
  font-size: 0.95rem;
  margin-bottom: 8px;
}

.form-input {
  width: 100%;
  padding: 14px 16px;
  font-size: 1rem;
  border: 1px solid var(--color-border);
  border-radius: 4px;
  background-color: var(--color-white);
  transition: border-color var(--transition-fast);
  font-family: var(--font-body);
}

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

.form-guarantee-text {
  font-size: 0.82rem;
  color: var(--color-midgray);
  text-align: center;
  margin-top: 15px;
}

/* --- Certificates Section --- */
.certificates-section {
  padding: 70px 0;
  background-color: var(--color-white);
  border-top: 1px solid var(--color-lightgray);
}

.certificates-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(240px, 1fr));
  gap: 25px;
  margin-top: 40px;
}

.certificate-card {
  border: 1px solid var(--color-lightgray);
  border-radius: 6px;
  padding: 20px;
  text-align: center;
  background-color: var(--color-bglight);
  cursor: pointer;
  transition: transform 0.2s ease, border-color 0.2s ease;
}

.certificate-card:hover {
  transform: translateY(-4px);
  border-color: var(--color-black);
}

.certificate-card img {
  height: 160px;
  object-fit: contain;
  margin: 0 auto 15px;
}

.certificate-card h4 {
  font-size: 1rem;
  margin-bottom: 5px;
}

.certificate-card p {
  font-size: 0.82rem;
  color: var(--color-midgray);
  margin: 0;
}

/* --- Modal Viewer --- */
.modal-overlay {
  position: fixed;
  top: 0;
  left: 0;
  right: 0;
  bottom: 0;
  background-color: rgba(0,0,0,0.8);
  display: none;
  align-items: center;
  justify-content: center;
  z-index: 2000;
  padding: 20px;
}

.modal-overlay.active {
  display: flex;
}

.modal-content {
  background-color: var(--color-white);
  max-width: 700px;
  width: 100%;
  border-radius: 8px;
  padding: 30px;
  position: relative;
  max-height: 90vh;
  overflow-y: auto;
}

.modal-close-btn {
  position: absolute;
  top: 15px;
  right: 20px;
  font-size: 1.8rem;
  background: none;
  border: none;
  cursor: pointer;
}

/* --- Compliance Footer --- */
.site-footer {
  background-color: var(--color-offblack);
  color: var(--color-lightgray);
  padding: 60px 0 30px;
  border-top: 1px solid var(--color-darkgray);
}

.footer-grid {
  display: grid;
  grid-template-columns: 2fr 1fr 1fr;
  gap: 50px;
  margin-bottom: 50px;
}

.footer-brand h3 {
  color: var(--color-white);
  font-size: 1.5rem;
  margin-bottom: 15px;
}

.footer-brand p {
  color: #aaaaaa;
  font-size: 0.9rem;
}

.footer-links h4 {
  color: var(--color-white);
  font-size: 1.1rem;
  margin-bottom: 18px;
}

.footer-links ul {
  list-style: none;
}

.footer-links li {
  margin-bottom: 10px;
}

.footer-links a {
  color: #cccccc;
  font-size: 0.9rem;
}

.footer-links a:hover {
  color: var(--color-white);
}

.footer-legal-notice {
  background-color: #111111;
  padding: 20px;
  border: 1px solid var(--color-darkgray);
  border-radius: 6px;
  margin-bottom: 30px;
  font-size: 0.82rem;
  color: #aaaaaa;
  line-height: 1.6;
}

.footer-copyright {
  text-align: center;
  font-size: 0.82rem;
  color: #777777;
  border-top: 1px solid var(--color-darkgray);
  padding-top: 25px;
}

/* --- Cookie Banner --- */
.cookie-banner {
  position: fixed;
  bottom: 0;
  left: 0;
  right: 0;
  background-color: var(--color-black);
  color: var(--color-white);
  padding: 20px;
  z-index: 9999;
  border-top: 1px solid var(--color-darkgray);
  display: none;
}

.cookie-banner.active {
  display: block;
}

.cookie-banner-inner {
  max-width: var(--max-width);
  margin: 0 auto;
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 20px;
  flex-wrap: wrap;
}

.cookie-banner p {
  color: var(--color-lightgray);
  font-size: 0.88rem;
  margin: 0;
  max-width: 800px;
}

.cookie-banner a {
  color: var(--color-white);
  text-decoration: underline;
}

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

.btn-cookie {
  padding: 8px 18px;
  font-size: 0.85rem;
  border-radius: 4px;
  cursor: pointer;
  font-weight: 600;
}

.btn-cookie-accept {
  background-color: var(--color-white);
  color: var(--color-black);
  border: 1px solid var(--color-white);
}

.btn-cookie-decline {
  background-color: transparent;
  color: var(--color-white);
  border: 1px solid var(--color-midgray);
}

/* --- Responsive Adjustments --- */
@media (max-width: 900px) {
  .hero-grid, .product-grid, .footer-grid {
    grid-template-columns: 1fr;
  }
  
  .product-gallery {
    position: static;
  }
  
  .mobile-nav-toggle {
    display: block;
  }
  
  .main-nav {
    position: absolute;
    top: var(--header-height);
    left: 0;
    right: 0;
    background-color: var(--color-white);
    border-bottom: 1px solid var(--color-lightgray);
    display: none;
    padding: 20px;
  }
  
  .main-nav.active {
    display: block;
  }
  
  .main-nav ul {
    flex-direction: column;
    align-items: flex-start;
    gap: 18px;
  }
  
  h1 { font-size: 2.2rem; }
  h2 { font-size: 1.8rem; }
}