/* ==========================================================================
   main.css — Dark theme main site
   ========================================================================== */

/* --- Base --- */
body {
  background: #0A0A0B;
  color: #E8E6E3;
}

::selection {
  background: #F59E0B;
  color: #000;
}

/* Subtle noise overlay */
body::before {
  content: '';
  position: fixed;
  inset: 0;
  pointer-events: none;
  opacity: 0.03;
  z-index: 9999;
  background-image: url("data:image/svg+xml,%3Csvg viewBox='0 0 256 256' xmlns='http://www.w3.org/2000/svg'%3E%3Cfilter id='noise'%3E%3CfeTurbulence type='fractalNoise' baseFrequency='0.9' numOctaves='4' stitchTiles='stitch'/%3E%3C/filter%3E%3Crect width='100%25' height='100%25' filter='url(%23noise)'/%3E%3C/svg%3E");
  background-repeat: repeat;
}

.amber {
  color: #F59E0B;
}

.gradient-text {
  background: linear-gradient(135deg, #F59E0B, #EF4444);
  -webkit-background-clip: text;
  -webkit-text-fill-color: transparent;
  background-clip: text;
}

/* --- Section Headers Pattern --- */
.section-overline {
  font-family: 'Space Mono', monospace;
  font-size: 11px;
  text-transform: uppercase;
  letter-spacing: 3px;
  color: #F59E0B;
  margin-bottom: 12px;
}

.section-title {
  font-size: clamp(28px, 4vw, 44px);
  font-weight: 700;
  letter-spacing: -1px;
  line-height: 1.15;
  margin-bottom: 16px;
}

.section-subtitle {
  font-size: 17px;
  color: #888;
  max-width: 560px;
  line-height: 1.7;
}

/* ==========================================================================
   Navbar
   ========================================================================== */
.navbar {
  position: sticky;
  top: 0;
  z-index: 1000;
  padding: 16px 0;
  transition: all 0.3s;
}

.navbar.scrolled {
  background: rgba(10, 10, 11, 0.85);
  backdrop-filter: blur(20px);
  -webkit-backdrop-filter: blur(20px);
  border-bottom: 1px solid #222;
}

.navbar-inner {
  display: flex;
  justify-content: space-between;
  align-items: center;
}

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

.nav-logo .logo-badge {
  width: 36px;
  height: 36px;
  background: linear-gradient(135deg, #F59E0B, #D97706);
  border-radius: 10px;
  display: grid;
  place-items: center;
  font-family: 'Space Mono', monospace;
  font-weight: 700;
  color: #000;
  font-size: 14px;
}

.nav-links {
  display: flex;
  gap: 32px;
  list-style: none;
}

.nav-links a {
  color: #888;
  font-size: 15px;
  font-weight: 500;
  transition: color 0.2s;
}

.nav-links a:hover {
  color: #F59E0B;
}

.nav-cta {
  padding: 10px 20px;
  font-size: 14px;
}

.hamburger {
  display: none;
  width: 24px;
  height: 18px;
  position: relative;
  cursor: pointer;
  background: none;
  border: none;
}

.hamburger span {
  display: block;
  width: 100%;
  height: 2px;
  background: #E8E6E3;
  border-radius: 2px;
  position: absolute;
  left: 0;
  transition: all 0.3s;
}

.hamburger span:nth-child(1) { top: 0; }
.hamburger span:nth-child(2) { top: 8px; }
.hamburger span:nth-child(3) { top: 16px; }

.hamburger.active span:nth-child(1) {
  top: 8px;
  transform: rotate(45deg);
}

.hamburger.active span:nth-child(2) {
  opacity: 0;
}

.hamburger.active span:nth-child(3) {
  top: 8px;
  transform: rotate(-45deg);
}

@media (max-width: 768px) {
  .nav-links {
    display: none;
    position: fixed;
    inset: 0;
    background: rgba(10, 10, 11, 0.97);
    flex-direction: column;
    align-items: center;
    justify-content: center;
    gap: 32px;
    z-index: 999;
  }

  .nav-links.active {
    display: flex;
  }

  .nav-links a {
    font-size: 24px;
  }

  .hamburger {
    display: block;
    z-index: 1001;
  }

  .nav-cta {
    display: none;
  }
}

/* ==========================================================================
   Hero
   ========================================================================== */
.hero {
  min-height: 100vh;
  display: flex;
  align-items: center;
  position: relative;
  overflow: hidden;
}

.hero::before {
  content: '';
  position: absolute;
  top: -200px;
  right: -200px;
  width: 600px;
  height: 600px;
  background: radial-gradient(circle, rgba(245, 158, 11, 0.08), transparent 70%);
  pointer-events: none;
}

.hero::after {
  content: '';
  position: absolute;
  bottom: -200px;
  left: -200px;
  width: 600px;
  height: 600px;
  background: radial-gradient(circle, rgba(99, 102, 241, 0.08), transparent 70%);
  pointer-events: none;
}

.hero-overline {
  font-family: 'Space Mono', monospace;
  font-size: 11px;
  text-transform: uppercase;
  letter-spacing: 3px;
  color: #F59E0B;
  margin-bottom: 16px;
}

.hero h1 {
  font-size: clamp(36px, 6vw, 72px);
  font-weight: 700;
  letter-spacing: -2px;
  line-height: 1.05;
}

.hero p {
  font-size: 18px;
  color: #999;
  max-width: 520px;
  margin: 24px 0;
  line-height: 1.7;
}

.hero-buttons {
  display: flex;
  gap: 16px;
  flex-wrap: wrap;
}

.hero-stats {
  border-top: 1px solid #1A1A1E;
  margin-top: 80px;
  padding-top: 32px;
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  gap: 32px;
}

.stat-value {
  font-family: 'Space Mono', monospace;
  font-size: 36px;
  color: #F59E0B;
  font-weight: 700;
}

.stat-label {
  font-size: 13px;
  color: #666;
  margin-top: 4px;
}

@media (max-width: 768px) {
  .hero-stats {
    grid-template-columns: repeat(2, 1fr);
    gap: 24px;
    margin-top: 48px;
  }
}

/* ==========================================================================
   Featured Video
   ========================================================================== */
.featured-video {
  padding: 56px 0 72px;
}

.featured-video-wrap {
  margin-top: 32px;
  max-width: 900px;
  margin-left: auto;
  margin-right: auto;
}

.featured-video-link {
  display: block;
  position: relative;
  border-radius: 20px;
  overflow: hidden;
  border: 1px solid #222;
  transition: all 0.3s;
}

.featured-video-link:hover {
  border-color: #F59E0B;
  box-shadow: 0 20px 60px rgba(245, 158, 11, 0.15);
  transform: translateY(-4px);
}

.featured-video-link img {
  width: 100%;
  display: block;
  aspect-ratio: 16 / 9;
  object-fit: cover;
}

.featured-play-overlay {
  position: absolute;
  inset: 0;
  display: grid;
  place-items: center;
  background: rgba(0, 0, 0, 0.25);
  transition: background 0.3s;
}

.featured-video-link:hover .featured-play-overlay {
  background: rgba(0, 0, 0, 0.4);
}

.featured-play-btn {
  width: 80px;
  height: 80px;
  border-radius: 50%;
  background: #F59E0B;
  display: grid;
  place-items: center;
  color: #000;
  font-size: 28px;
  transition: transform 0.2s;
  box-shadow: 0 8px 32px rgba(245, 158, 11, 0.3);
}

.featured-video-link:hover .featured-play-btn {
  transform: scale(1.1);
}

@media (max-width: 480px) {
  .featured-play-btn {
    width: 56px;
    height: 56px;
    font-size: 20px;
  }
}

/* ==========================================================================
   Partners
   ========================================================================== */
.partners {
  padding: 56px 0;
  background: #0E0E10;
}

.partner-logos {
  display: flex;
  justify-content: center;
  align-items: center;
  gap: 60px;
  flex-wrap: wrap;
}

.partner-logo {
  display: flex;
  align-items: center;
  justify-content: center;
  opacity: 0.5;
  filter: grayscale(100%) brightness(1.5);
  transition: all 0.3s;
  padding: 16px;
}

.partner-logo:hover {
  opacity: 1;
  filter: grayscale(0%) brightness(1);
}

.partner-logo img {
  height: 40px;
  width: auto;
  max-width: 180px;
  object-fit: contain;
}

@media (max-width: 480px) {
  .partner-logos {
    gap: 32px;
  }

  .partner-logo img {
    height: 32px;
    max-width: 140px;
  }
}

/* ==========================================================================
   Guides
   ========================================================================== */
.guides {
  padding: 72px 0;
}

.search-bar {
  background: #141416;
  border: 1px solid #222;
  border-radius: 16px;
  padding: 20px 28px;
  display: flex;
  align-items: center;
  gap: 12px;
  color: #555;
  margin-bottom: 32px;
}

.search-bar input {
  background: transparent;
  border: none;
  outline: none;
  color: #E8E6E3;
  font-size: 15px;
  width: 100%;
}

.search-bar input::placeholder {
  color: #555;
}

.guide-grid {
  display: grid;
  grid-template-columns: repeat(auto-fill, minmax(320px, 1fr));
  gap: 20px;
}

.guide-card {
  background: #141416;
  border: 1px solid #222;
  border-radius: 16px;
  padding: 28px;
  position: relative;
  overflow: hidden;
  transition: all 0.3s;
}

.guide-card::before {
  content: '';
  position: absolute;
  top: 0;
  left: 0;
  right: 0;
  height: 3px;
  background: var(--card-color);
  transform: scaleX(0);
  transform-origin: left;
  transition: transform 0.3s;
}

.guide-card:hover::before {
  transform: scaleX(1);
}

.guide-card:hover {
  border-color: #333;
  transform: translateY(-4px);
  box-shadow: 0 12px 40px rgba(0, 0, 0, 0.3);
}

.guide-icon {
  width: 56px;
  height: 56px;
  border-radius: 16px;
  display: grid;
  place-items: center;
  font-size: 24px;
  margin-bottom: 20px;
}

.guide-count {
  position: absolute;
  top: 20px;
  right: 20px;
}

.guide-cta {
  opacity: 0;
  transform: translateY(8px);
  transition: all 0.3s;
  color: var(--card-color);
  font-size: 14px;
  font-weight: 600;
  margin-top: 16px;
  display: inline-flex;
  align-items: center;
  gap: 6px;
}

.guide-card:hover .guide-cta {
  opacity: 1;
  transform: translateY(0);
}

/* ==========================================================================
   Products
   ========================================================================== */
.products {
  background: #0E0E10;
  padding: 72px 0;
}

.product-grid {
  display: grid;
  grid-template-columns: repeat(auto-fill, minmax(260px, 1fr));
  gap: 20px;
}

.product-card {
  background: #141416;
  border: 1px solid #222;
  border-radius: 16px;
  overflow: hidden;
  transition: all 0.3s;
  position: relative;
}

.product-card:hover {
  border-color: #333;
  transform: translateY(-4px);
  box-shadow: 0 12px 40px rgba(0, 0, 0, 0.3);
}

.product-image {
  height: 180px;
  background: linear-gradient(135deg, #1A1A1E, #222);
  display: grid;
  place-items: center;
  font-size: 48px;
  position: relative;
}

.product-tag {
  position: absolute;
  top: 12px;
  left: 12px;
}

.product-body {
  padding: 24px;
}

.product-price {
  font-family: 'Space Mono', monospace;
  font-size: 24px;
  color: #F59E0B;
}

/* ==========================================================================
   4MApp Section
   ========================================================================== */
.app-section {
  padding: 120px 0;
}

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

.app-badge {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  margin-bottom: 24px;
}

.app-badge .pulse-dot {
  width: 8px;
  height: 8px;
  border-radius: 50%;
  background: #16A34A;
  animation: pulse 2s infinite;
}

@keyframes pulse {
  0%, 100% { opacity: 1; }
  50% { opacity: 0.4; }
}

.app-features {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 16px;
  margin-top: 32px;
}

.feature-card {
  padding: 32px;
  border-radius: 20px;
  background: linear-gradient(135deg, #141416, #1A1A1E);
  border: 1px solid #222;
  transition: all 0.3s;
}

.feature-card:hover {
  border-color: #F59E0B;
  transform: scale(1.02);
}

.feature-icon {
  width: 48px;
  height: 48px;
  border-radius: 14px;
  background: rgba(245, 158, 11, 0.1);
  display: grid;
  place-items: center;
  font-size: 22px;
  margin-bottom: 16px;
}

@media (max-width: 768px) {
  .app-grid {
    grid-template-columns: 1fr;
    gap: 40px;
  }

  .app-features {
    grid-template-columns: 1fr;
  }
}

/* ==========================================================================
   Phone Mockup
   ========================================================================== */
.phone-mockup {
  width: 220px;
  height: 440px;
  border-radius: 36px;
  border: 2px solid #333;
  background: linear-gradient(180deg, #1A1A1E, #0E0E10);
  padding: 12px;
  position: relative;
  margin: 0 auto;
  animation: float 4s ease-in-out infinite;
  box-shadow: 0 0 60px rgba(245, 158, 11, 0.15);
}

@keyframes float {
  0%, 100% { transform: translateY(0); }
  50% { transform: translateY(-8px); }
}

@keyframes glow {
  from { box-shadow: 0 0 40px rgba(245, 158, 11, 0.1); }
  to { box-shadow: 0 0 80px rgba(245, 158, 11, 0.2); }
}

.phone-mockup {
  animation: float 4s ease-in-out infinite, glow 3s ease-in-out infinite alternate;
}

.phone-screen {
  border-radius: 26px;
  height: 100%;
  background: linear-gradient(180deg, #0A1628, #0E0E10);
  padding: 20px;
  display: flex;
  flex-direction: column;
  gap: 12px;
  overflow: hidden;
}

.phone-header {
  text-align: center;
}

.phone-logo {
  font-family: 'Space Mono', monospace;
  color: #F59E0B;
  font-size: 18px;
  font-weight: 700;
}

.phone-metric {
  background: rgba(245, 158, 11, 0.05);
  border-radius: 12px;
  padding: 12px;
}

.phone-metric .value {
  font-family: 'Space Mono', monospace;
  color: #F59E0B;
  font-size: 20px;
  font-weight: 700;
}

.phone-metric .label {
  font-size: 11px;
  color: #666;
  margin-top: 2px;
}

/* ==========================================================================
   Videos
   ========================================================================== */
.videos {
  padding: 72px 0;
}

.video-grid {
  display: grid;
  grid-template-columns: repeat(auto-fill, minmax(280px, 1fr));
  gap: 20px;
}

.video-card {
  background: #141416;
  border: 1px solid #222;
  border-radius: 16px;
  overflow: hidden;
  transition: all 0.3s;
  cursor: pointer;
}

.video-card:hover {
  transform: translateY(-4px);
  border-color: #333;
  box-shadow: 0 12px 40px rgba(0, 0, 0, 0.3);
}

.video-thumb {
  position: relative;
  aspect-ratio: 16 / 9;
  overflow: hidden;
}

.video-thumb img {
  width: 100%;
  height: 100%;
  object-fit: cover;
}

.play-overlay {
  position: absolute;
  inset: 0;
  display: grid;
  place-items: center;
  background: rgba(0, 0, 0, 0.3);
  transition: background 0.3s;
}

.video-card:hover .play-overlay {
  background: rgba(0, 0, 0, 0.5);
}

.play-btn {
  width: 56px;
  height: 56px;
  border-radius: 50%;
  background: #F59E0B;
  display: grid;
  place-items: center;
  color: #000;
  font-size: 20px;
  transition: transform 0.2s;
}

.video-card:hover .play-btn {
  transform: scale(1.1);
}

.video-info {
  padding: 16px;
}

.video-title {
  font-size: 15px;
  font-weight: 600;
  line-height: 1.4;
  margin-bottom: 8px;
}

.video-date {
  font-size: 13px;
  color: #666;
}

/* ==========================================================================
   About
   ========================================================================== */
.about {
  padding: 72px 0;
}

.about-grid {
  display: grid;
  grid-template-columns: repeat(auto-fill, minmax(300px, 1fr));
  gap: 24px;
}

.profile-card {
  background: #141416;
  border: 1px solid #222;
  border-radius: 16px;
  padding: 32px;
  transition: all 0.3s;
}

.profile-card:hover {
  border-color: #333;
  transform: translateY(-4px);
}

.avatar {
  width: 72px;
  height: 72px;
  border-radius: 50%;
  display: grid;
  place-items: center;
  font-family: 'Space Mono', monospace;
  font-size: 28px;
  font-weight: 700;
  color: #000;
  margin-bottom: 20px;
}

/* ==========================================================================
   Newsletter
   ========================================================================== */
.newsletter {
  padding: 56px 0 72px;
}

.newsletter-card {
  background: linear-gradient(135deg, #141416, #1A1A1E);
  border: 1px solid #222;
  border-radius: 24px;
  padding: 60px;
  text-align: center;
  max-width: 640px;
  margin: 0 auto;
}

.newsletter-form {
  display: flex;
  gap: 12px;
  margin-top: 32px;
  justify-content: center;
}

.newsletter-form input {
  flex: 1;
  max-width: 320px;
  padding: 14px 20px;
  background: #0A0A0B;
  border: 1px solid #333;
  border-radius: 12px;
  color: #fff;
  font-size: 15px;
  transition: border-color 0.2s;
}

.newsletter-form input::placeholder {
  color: #555;
}

.newsletter-form input:focus {
  border-color: #F59E0B;
  outline: none;
}

@media (max-width: 480px) {
  .newsletter-card {
    padding: 40px 24px;
  }

  .newsletter-form {
    flex-direction: column;
    align-items: center;
  }

  .newsletter-form input {
    max-width: 100%;
    width: 100%;
  }
}

/* ==========================================================================
   Footer
   ========================================================================== */
.footer {
  background: #060607;
  border-top: 1px solid #1A1A1E;
  padding: 60px 0 32px;
}

.footer-grid {
  display: grid;
  grid-template-columns: 2fr 1fr 1fr 1fr;
  gap: 40px;
}

.footer-logo {
  display: flex;
  align-items: center;
  gap: 12px;
  margin-bottom: 16px;
}

.footer-description {
  font-size: 14px;
  color: #666;
  line-height: 1.7;
}

.footer-heading {
  font-size: 13px;
  text-transform: uppercase;
  letter-spacing: 1px;
  color: #888;
  margin-bottom: 16px;
  font-family: 'Space Mono', monospace;
}

.footer-links {
  list-style: none;
  display: flex;
  flex-direction: column;
  gap: 10px;
}

.footer-links a {
  color: #666;
  font-size: 14px;
  transition: color 0.2s;
}

.footer-links a:hover {
  color: #F59E0B;
}

.footer-bottom {
  border-top: 1px solid #1A1A1E;
  margin-top: 40px;
  padding-top: 24px;
  display: flex;
  justify-content: space-between;
  font-size: 13px;
  color: #555;
}

@media (max-width: 768px) {
  .footer-grid {
    grid-template-columns: 1fr;
    gap: 32px;
  }

  .footer-bottom {
    flex-direction: column;
    gap: 8px;
  }
}

/* ==========================================================================
   Theme Toggle Button
   ========================================================================== */
.theme-toggle {
  width: 40px;
  height: 40px;
  border-radius: 50%;
  border: 1px solid #333;
  background: rgba(255, 255, 255, 0.06);
  cursor: pointer;
  display: grid;
  place-items: center;
  font-size: 18px;
  line-height: 1;
  transition: all 0.3s;
  margin-left: 8px;
  flex-shrink: 0;
}

.theme-toggle:hover {
  border-color: #F59E0B;
  background: rgba(245, 158, 11, 0.1);
}

.theme-icon {
  pointer-events: none;
}

@media (max-width: 768px) {
  .theme-toggle {
    position: absolute;
    right: 56px;
    top: 50%;
    transform: translateY(-50%);
  }

  .navbar-inner {
    position: relative;
  }
}

/* ==========================================================================
   Light Theme Overrides
   ========================================================================== */
[data-theme="light"] body {
  background: #FAFAFA;
  color: #1A1A2E;
}

[data-theme="light"] body::before {
  opacity: 0.015;
}

/* --- Navbar --- */
[data-theme="light"] .navbar.scrolled {
  background: rgba(255, 255, 255, 0.9);
  border-bottom: 1px solid #E5E5E5;
}

[data-theme="light"] .nav-links a {
  color: #555;
}

[data-theme="light"] .nav-links a:hover {
  color: #F59E0B;
}

[data-theme="light"] .hamburger span {
  background: #1A1A2E;
}

[data-theme="light"] .theme-toggle {
  border-color: #DDD;
  background: rgba(0, 0, 0, 0.04);
}

[data-theme="light"] .theme-toggle:hover {
  border-color: #F59E0B;
  background: rgba(245, 158, 11, 0.1);
}

@media (max-width: 768px) {
  [data-theme="light"] .nav-links {
    background: rgba(250, 250, 250, 0.97);
  }

  [data-theme="light"] .nav-links a {
    color: #1A1A2E;
  }
}

/* --- Section Headers --- */
[data-theme="light"] .section-subtitle {
  color: #666;
}

/* --- Hero (keep dramatic, use subtle gradient) --- */
[data-theme="light"] .hero {
  background: linear-gradient(180deg, #0A0A0B 0%, #1A1A2E 60%, #FAFAFA 100%);
  color: #E8E6E3;
}

[data-theme="light"] .hero h1 {
  color: #E8E6E3;
}

[data-theme="light"] .hero p {
  color: #999;
}

[data-theme="light"] .hero-overline {
  color: #F59E0B;
}

[data-theme="light"] .hero-stats {
  border-top-color: #1A1A1E;
}

[data-theme="light"] .stat-label {
  color: #999;
}

/* --- Search Bar --- */
[data-theme="light"] .search-bar {
  background: #FFFFFF;
  border-color: #E5E5E5;
  color: #999;
}

[data-theme="light"] .search-bar input {
  color: #1A1A2E;
}

[data-theme="light"] .search-bar input::placeholder {
  color: #999;
}

/* --- Guide Cards --- */
[data-theme="light"] .guide-card {
  background: #FFFFFF;
  border-color: #E5E5E5;
}

[data-theme="light"] .guide-card:hover {
  border-color: #CCC;
  box-shadow: 0 12px 40px rgba(0, 0, 0, 0.08);
}

/* --- Products Section --- */
[data-theme="light"] .products {
  background: #F5F5F5;
}

[data-theme="light"] .product-card {
  background: #FFFFFF;
  border-color: #E5E5E5;
}

[data-theme="light"] .product-card:hover {
  border-color: #CCC;
  box-shadow: 0 12px 40px rgba(0, 0, 0, 0.08);
}

[data-theme="light"] .product-image {
  background: linear-gradient(135deg, #F0F0F0, #E5E5E5);
}

/* --- Feature Cards (App Section) --- */
[data-theme="light"] .feature-card {
  background: linear-gradient(135deg, #FFFFFF, #F8F8F8);
  border-color: #E5E5E5;
}

[data-theme="light"] .feature-card:hover {
  border-color: #F59E0B;
}

/* --- Phone Mockup --- */
[data-theme="light"] .phone-mockup {
  border-color: #CCC;
  background: linear-gradient(180deg, #F0F0F0, #E0E0E0);
  box-shadow: 0 0 60px rgba(245, 158, 11, 0.1);
}

/* --- Video Cards --- */
[data-theme="light"] .video-card {
  background: #FFFFFF;
  border-color: #E5E5E5;
}

[data-theme="light"] .video-card:hover {
  border-color: #CCC;
  box-shadow: 0 12px 40px rgba(0, 0, 0, 0.08);
}

[data-theme="light"] .video-date {
  color: #888;
}

[data-theme="light"] .video-title {
  color: #1A1A2E;
}

/* --- About / Profile Cards --- */
[data-theme="light"] .profile-card {
  background: #FFFFFF;
  border-color: #E5E5E5;
}

[data-theme="light"] .profile-card:hover {
  border-color: #CCC;
}

/* --- Newsletter --- */
[data-theme="light"] .newsletter-card {
  background: linear-gradient(135deg, #FFFFFF, #F8F8F8);
  border-color: #E5E5E5;
}

[data-theme="light"] .newsletter-form input {
  background: #F5F5F5;
  border-color: #DDD;
  color: #1A1A2E;
}

[data-theme="light"] .newsletter-form input::placeholder {
  color: #999;
}

[data-theme="light"] .newsletter-form input:focus {
  border-color: #F59E0B;
}

/* --- Footer --- */
[data-theme="light"] .footer {
  background: #F0F0F0;
  border-top-color: #E5E5E5;
}

[data-theme="light"] .footer-description {
  color: #888;
}

[data-theme="light"] .footer-heading {
  color: #555;
}

[data-theme="light"] .footer-links a {
  color: #888;
}

[data-theme="light"] .footer-links a:hover {
  color: #F59E0B;
}

[data-theme="light"] .footer-bottom {
  border-top-color: #E5E5E5;
  color: #999;
}

/* --- Misc text adjustments --- */
[data-theme="light"] .phone-metric .label {
  color: #888;
}

[data-theme="light"] .stat-value {
  color: #F59E0B;
}

/* --- Tags / Badges --- */
[data-theme="light"] .badge {
  background: rgba(245, 158, 11, 0.08);
}

/* --- Text readability in light mode --- */
[data-theme="light"] .guide-card p,
[data-theme="light"] .feature-card p,
[data-theme="light"] .profile-card p,
[data-theme="light"] .section-subtitle,
[data-theme="light"] .video-date {
  color: #555 !important;
}

[data-theme="light"] .guide-card h3,
[data-theme="light"] .product-body h3,
[data-theme="light"] .feature-card h4 {
  color: #1A1A2E !important;
}

[data-theme="light"] .newsletter-card p {
  color: #666 !important;
}

[data-theme="light"] .newsletter-card h2 {
  color: #1A1A2E;
}

/* --- Featured Video --- */
[data-theme="light"] .featured-video-link {
  border-color: #E5E5E5;
}

[data-theme="light"] .featured-video-link:hover {
  border-color: #F59E0B;
  box-shadow: 0 20px 60px rgba(245, 158, 11, 0.1);
}

/* --- Partners --- */
[data-theme="light"] .partners {
  background: #F5F5F5;
}

[data-theme="light"] .partner-logo {
  filter: grayscale(100%) brightness(0.8);
  opacity: 0.6;
}

[data-theme="light"] .partner-logo:hover {
  filter: grayscale(0%) brightness(1);
  opacity: 1;
}

/* --- Smooth transition on theme change --- */
body,
.navbar,
.navbar.scrolled,
.guide-card,
.product-card,
.feature-card,
.video-card,
.profile-card,
.newsletter-card,
.search-bar,
.footer,
.phone-mockup,
.hamburger span,
.theme-toggle {
  transition: background 0.3s, color 0.3s, border-color 0.3s, box-shadow 0.3s;
}

/* ==========================================================================
   Guide cards — rich (with matching videos)
   ========================================================================== */
.guide-grid--two {
  grid-template-columns: repeat(auto-fit, minmax(380px, 1fr));
  gap: 28px;
  max-width: 1080px;
  margin-left: auto;
  margin-right: auto;
}

.guide-card--rich {
  display: flex;
  flex-direction: column;
  padding: 32px;
  position: relative;
  overflow: hidden;
}

.guide-card--rich::before {
  content: "";
  position: absolute;
  inset: 0;
  background: radial-gradient(circle at top right, var(--card-color, #F59E0B) 0%, transparent 55%);
  opacity: 0.08;
  pointer-events: none;
}

.guide-card-head {
  display: flex;
  align-items: center;
  justify-content: space-between;
  margin-bottom: 20px;
  position: relative;
  z-index: 1;
}

.guide-card-head .guide-icon {
  margin: 0;
}

.guide-video-list {
  list-style: none;
  margin: 0;
  padding: 0;
  display: flex;
  flex-direction: column;
  gap: 10px;
  position: relative;
  z-index: 1;
}

.guide-video-list li a {
  display: grid;
  grid-template-columns: 96px 1fr auto;
  gap: 14px;
  align-items: center;
  padding: 8px;
  border-radius: 10px;
  background: rgba(255, 255, 255, 0.02);
  border: 1px solid #222;
  text-decoration: none;
  color: inherit;
  transition: border-color 0.2s, transform 0.2s, background 0.2s;
}

.guide-video-list li a:hover {
  border-color: var(--card-color, #F59E0B);
  background: rgba(255, 255, 255, 0.04);
  transform: translateX(2px);
}

.guide-video-list img {
  width: 96px;
  height: 54px;
  object-fit: cover;
  border-radius: 6px;
  display: block;
}

.guide-video-title {
  font-size: 13px;
  font-weight: 500;
  color: #E8E6E3;
  line-height: 1.35;
  display: -webkit-box;
  -webkit-line-clamp: 2;
  -webkit-box-orient: vertical;
  overflow: hidden;
}

.guide-video-arrow {
  font-size: 16px;
  color: var(--card-color, #F59E0B);
  padding-right: 6px;
}

/* ==========================================================================
   Promo card (MARSTEK 5%)
   ========================================================================== */
.promo-cards-grid {
  display: grid;
  grid-template-columns: repeat(2, minmax(0, 1fr));
  gap: 24px;
  align-items: stretch;
}

.promo-cards-grid > .promo-card { height: 100%; }
.promo-cards-grid > .promo-card > .promo-card-inner {
  height: 100%;
  grid-template-columns: 1fr;
  padding: 36px;
  gap: 28px;
}
.promo-cards-grid .promo-card-visual { order: -1; justify-content: flex-end; }
.promo-cards-grid .promo-discount {
  width: 150px;
  height: 150px;
  margin-right: -8px;
}
.promo-cards-grid .promo-discount-pct { font-size: 40px; }
.promo-cards-grid .promo-discount-label { font-size: 11px; }
.promo-cards-grid .promo-discount-label strong { font-size: 13px; }
.promo-cards-grid .promo-card-title { font-size: 26px; }

.promo-card--solarsale {
  background: linear-gradient(135deg, #10B981, #059669 50%, #6366F1);
  box-shadow: 0 30px 70px -30px rgba(16, 185, 129, 0.45);
}
.promo-card--solarsale .promo-card-eyebrow { color: #10B981; }
.promo-card--solarsale .promo-card-inner::before {
  background: radial-gradient(circle at 0% 100%, rgba(16, 185, 129, 0.15), transparent 55%);
}
.promo-card--solarsale .promo-code { border-color: #10B981; }
.promo-card--solarsale .promo-code-value { color: #10B981; }
.promo-card--solarsale .promo-code-copy { background: #10B981; color: #fff; }
.promo-card--solarsale .promo-code-copy:hover { background: #34D399; }
.promo-card--solarsale .promo-discount {
  background: radial-gradient(circle at 30% 30%, #34D399, #059669 70%);
  box-shadow: 0 20px 60px -10px rgba(16, 185, 129, 0.5);
  color: #062b1d;
}
.promo-card--solarsale .btn-amber {
  background: #10B981;
  color: #fff;
  border-color: #10B981;
}
.promo-card--solarsale .btn-amber:hover {
  background: #059669;
  border-color: #059669;
}
.promo-card--solarsale .btn-outline-amber {
  color: #10B981;
  border-color: #10B981;
}
.promo-card--solarsale .btn-outline-amber:hover {
  background: #10B981;
  color: #fff;
}

@media (max-width: 980px) {
  .promo-cards-grid { grid-template-columns: 1fr; }
}

.promo-card {
  border-radius: 24px;
  padding: 1px;
  background: linear-gradient(135deg, #F59E0B, #D97706 50%, #6366F1);
  box-shadow: 0 30px 70px -30px rgba(245, 158, 11, 0.45);
}

.promo-card-inner {
  background: #0E0E10;
  border-radius: 23px;
  padding: 48px;
  display: grid;
  grid-template-columns: 1.4fr 1fr;
  gap: 40px;
  align-items: center;
  position: relative;
  overflow: hidden;
}

.promo-card-inner::before {
  content: "";
  position: absolute;
  inset: 0;
  background: radial-gradient(circle at 0% 100%, rgba(245, 158, 11, 0.15), transparent 55%);
  pointer-events: none;
}

.promo-card-text {
  position: relative;
  z-index: 1;
}

.promo-card-eyebrow {
  display: inline-block;
  font-size: 11px;
  font-weight: 700;
  letter-spacing: 0.18em;
  text-transform: uppercase;
  color: #F59E0B;
  margin-bottom: 12px;
}

.promo-card-title {
  font-size: 32px;
  font-weight: 700;
  margin: 0 0 14px;
  letter-spacing: -0.02em;
  color: #E8E6E3;
}

.promo-card-desc {
  color: #9A9A9A;
  font-size: 15px;
  line-height: 1.7;
  margin: 0 0 24px;
  max-width: 480px;
}

.promo-code {
  display: inline-flex;
  align-items: center;
  gap: 12px;
  background: #16161A;
  border: 1px dashed #F59E0B;
  border-radius: 12px;
  padding: 10px 14px;
  margin-bottom: 28px;
}

.promo-code-label {
  font-size: 11px;
  font-weight: 700;
  letter-spacing: 0.16em;
  text-transform: uppercase;
  color: #888;
}

.promo-code-value {
  font-family: 'Space Mono', monospace;
  font-size: 18px;
  font-weight: 700;
  color: #F59E0B;
  letter-spacing: 0.08em;
}

.promo-code-copy {
  background: #F59E0B;
  color: #0A0A0B;
  border: none;
  border-radius: 8px;
  padding: 6px 12px;
  font-size: 12px;
  font-weight: 700;
  cursor: pointer;
  transition: background 0.2s, transform 0.2s;
}

.promo-code-copy:hover {
  background: #FBBF24;
  transform: translateY(-1px);
}

.promo-code-copy.copied {
  background: #10B981;
  color: #fff;
}

.promo-card-actions {
  display: flex;
  flex-wrap: wrap;
  gap: 12px;
}

.promo-card-visual {
  position: relative;
  z-index: 1;
  display: flex;
  justify-content: center;
  align-items: center;
}

.promo-discount {
  width: 220px;
  height: 220px;
  border-radius: 50%;
  background: radial-gradient(circle at 30% 30%, #FBBF24, #D97706 70%);
  display: grid;
  place-items: center;
  text-align: center;
  color: #0A0A0B;
  box-shadow: 0 20px 60px -10px rgba(245, 158, 11, 0.5);
  transform: rotate(-6deg);
  font-weight: 700;
}

.promo-discount-pct {
  font-family: 'Space Mono', monospace;
  font-size: 56px;
  line-height: 1;
  letter-spacing: -0.04em;
}

.promo-discount-label {
  font-size: 13px;
  margin-top: 8px;
  line-height: 1.35;
}

.promo-discount-label strong {
  display: block;
  font-size: 16px;
  letter-spacing: 0.04em;
}

@media (max-width: 768px) {
  .promo-card-inner {
    grid-template-columns: 1fr;
    padding: 32px;
    gap: 32px;
  }
  .promo-card-visual { order: -1; }
  .promo-discount { width: 180px; height: 180px; }
  .promo-discount-pct { font-size: 44px; }
  .promo-card-title { font-size: 24px; }
}

/* ==========================================================================
   Solar yield calculator
   ========================================================================== */
.solar-calc {
  padding: 72px 0;
  background: #0E0E10;
}

.solar-card {
  display: grid;
  grid-template-columns: 1.2fr 1fr;
  gap: 0;
  background: #141416;
  border: 1px solid #222;
  border-radius: 24px;
  overflow: hidden;
  max-width: 1080px;
  margin: 0 auto;
  box-shadow: 0 30px 80px -40px rgba(245, 158, 11, 0.25);
}

.solar-form {
  padding: 40px;
  display: flex;
  flex-direction: column;
  gap: 22px;
  border-right: 1px solid #222;
}

.solar-row {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(140px, 1fr));
  gap: 16px;
}

.solar-field {
  display: flex;
  flex-direction: column;
  gap: 8px;
  font-size: 13px;
  color: #C9C7C4;
}

.solar-field span {
  font-weight: 600;
  letter-spacing: 0.02em;
}

.solar-field--wide {
  grid-column: 1 / -1;
}

.solar-field input[type="text"],
.solar-field input[type="number"],
.solar-field select {
  background: #0E0E10;
  border: 1px solid #2A2A2E;
  border-radius: 10px;
  padding: 12px 14px;
  color: #E8E6E3;
  font-size: 15px;
  font-family: inherit;
  transition: border-color 0.2s, box-shadow 0.2s;
}

.solar-field input:focus,
.solar-field select:focus {
  outline: none;
  border-color: #F59E0B;
  box-shadow: 0 0 0 3px rgba(245, 158, 11, 0.18);
}

.solar-field input[type="range"] {
  -webkit-appearance: none;
  appearance: none;
  background: transparent;
  width: 100%;
  padding: 8px 0;
}

.solar-field input[type="range"]::-webkit-slider-runnable-track {
  height: 6px;
  background: linear-gradient(90deg, #F59E0B var(--tilt-fill, 33%), #2A2A2E var(--tilt-fill, 33%));
  border-radius: 999px;
}

.solar-field input[type="range"]::-moz-range-track {
  height: 6px;
  background: #2A2A2E;
  border-radius: 999px;
}

.solar-field input[type="range"]::-moz-range-progress {
  height: 6px;
  background: #F59E0B;
  border-radius: 999px;
}

.solar-field input[type="range"]::-webkit-slider-thumb {
  -webkit-appearance: none;
  appearance: none;
  width: 18px;
  height: 18px;
  border-radius: 50%;
  background: #F59E0B;
  border: 3px solid #141416;
  margin-top: -6px;
  cursor: pointer;
  box-shadow: 0 2px 6px rgba(0, 0, 0, 0.4);
}

.solar-field input[type="range"]::-moz-range-thumb {
  width: 18px;
  height: 18px;
  border-radius: 50%;
  background: #F59E0B;
  border: 3px solid #141416;
  cursor: pointer;
}

.solar-disclaimer {
  font-size: 12px;
  color: #666;
  margin: 0;
}

.solar-result {
  background: linear-gradient(160deg, #1A1A1E 0%, #0E0E10 100%);
  padding: 40px;
  display: flex;
  flex-direction: column;
  gap: 28px;
  position: relative;
  overflow: hidden;
}

.solar-result::before {
  content: "";
  position: absolute;
  inset: 0;
  background: radial-gradient(circle at 80% 0%, rgba(245, 158, 11, 0.22), transparent 55%);
  pointer-events: none;
}

.solar-result-main {
  position: relative;
  z-index: 1;
  display: flex;
  flex-direction: column;
  gap: 4px;
}

.solar-result-label {
  font-size: 12px;
  font-weight: 700;
  letter-spacing: 0.16em;
  text-transform: uppercase;
  color: #F59E0B;
}

.solar-result-value {
  font-family: 'Space Mono', monospace;
  font-size: 44px;
  font-weight: 700;
  color: #E8E6E3;
  letter-spacing: -0.03em;
  line-height: 1.1;
}

.solar-result-sub {
  font-size: 13px;
  color: #888;
}

.solar-result-grid {
  position: relative;
  z-index: 1;
  display: grid;
  grid-template-columns: 1fr;
  gap: 12px;
}

.solar-stat {
  display: grid;
  grid-template-columns: 36px 1fr auto;
  align-items: center;
  gap: 14px;
  padding: 14px 16px;
  background: rgba(255, 255, 255, 0.03);
  border: 1px solid #2A2A2E;
  border-radius: 12px;
}

.solar-stat-icon {
  font-size: 20px;
  text-align: center;
}

.solar-stat-label {
  font-size: 13px;
  color: #888;
  grid-column: 2;
  grid-row: 2;
  margin-top: -2px;
}

.solar-stat-value {
  grid-column: 2;
  grid-row: 1;
  font-weight: 700;
  font-size: 16px;
  color: #E8E6E3;
}

@media (max-width: 860px) {
  .solar-card {
    grid-template-columns: 1fr;
  }
  .solar-form {
    border-right: none;
    border-bottom: 1px solid #222;
    padding: 28px;
  }
  .solar-result {
    padding: 28px;
  }
  .solar-result-value { font-size: 36px; }
}

[data-theme="light"] .solar-calc { background: #F8F8FA; }
[data-theme="light"] .solar-card { background: #FFFFFF; border-color: #E8E8EC; }
[data-theme="light"] .solar-form { border-color: #E8E8EC; }
[data-theme="light"] .solar-field input,
[data-theme="light"] .solar-field select {
  background: #F8F8FA;
  border-color: #E0E0E4;
  color: #1A1A1E;
}
[data-theme="light"] .solar-result {
  background: linear-gradient(160deg, #FFF7E6 0%, #FFFFFF 100%);
}
[data-theme="light"] .solar-result-value { color: #1A1A1E; }
[data-theme="light"] .solar-stat {
  background: #F8F8FA;
  border-color: #E8E8EC;
}
[data-theme="light"] .solar-stat-value { color: #1A1A1E; }

/* ==========================================================================
   Profile cards — rich (Jan & Kriz)
   ========================================================================== */
.about-grid {
  grid-template-columns: repeat(auto-fit, minmax(320px, 1fr));
  gap: 28px;
  max-width: 880px;
  margin-left: auto;
  margin-right: auto;
}

.profile-card--rich {
  padding: 36px;
  position: relative;
  overflow: hidden;
  background: linear-gradient(180deg, #141416 0%, #0F0F11 100%);
}

.profile-card--rich::before {
  content: "";
  position: absolute;
  top: -1px; left: -1px; right: -1px;
  height: 4px;
  background: var(--profile-accent, #F59E0B);
  border-radius: 16px 16px 0 0;
}

.profile-card--rich::after {
  content: "";
  position: absolute;
  inset: 0;
  background: radial-gradient(circle at 100% 0%, var(--profile-accent, #F59E0B) 0%, transparent 50%);
  opacity: 0.06;
  pointer-events: none;
}

.profile-card--rich:hover {
  border-color: var(--profile-accent, #333);
  transform: translateY(-4px);
}

.profile-card-top {
  display: flex;
  align-items: center;
  gap: 18px;
  margin-bottom: 20px;
  position: relative;
  z-index: 1;
}

.profile-card--rich .avatar {
  width: 80px;
  height: 80px;
  margin-bottom: 0;
  flex-shrink: 0;
  border: 2px solid var(--profile-accent, #F59E0B);
  padding: 3px;
  background: #0A0A0B;
}

.profile-card-meta h3 {
  font-size: 22px;
  margin: 0 0 4px;
  letter-spacing: -0.01em;
}

.profile-role {
  font-size: 13px;
  font-weight: 700;
  letter-spacing: 0.12em;
  text-transform: uppercase;
  margin: 0;
}

.profile-bio {
  color: #9A9A9A;
  font-size: 14.5px;
  line-height: 1.7;
  margin: 0 0 22px;
  position: relative;
  z-index: 1;
}

.profile-tags {
  display: flex;
  flex-wrap: wrap;
  gap: 8px;
  position: relative;
  z-index: 1;
}

.profile-tag {
  font-size: 12px;
  font-weight: 600;
  padding: 4px 10px;
  border-radius: 999px;
  background: rgba(255, 255, 255, 0.04);
  border: 1px solid #2A2A2E;
  color: #C9C7C4;
}

/* --- Light theme tweaks for new components --- */
[data-theme="light"] .guide-video-list li a {
  background: #F8F8FA;
  border-color: #E8E8EC;
}
[data-theme="light"] .guide-video-title { color: #1A1A1E; }
[data-theme="light"] .promo-card-inner { background: #FFFFFF; }
[data-theme="light"] .promo-card-title { color: #1A1A1E; }
[data-theme="light"] .promo-code { background: #F8F8FA; }
[data-theme="light"] .promo-code-label { color: #555; }
[data-theme="light"] .profile-card--rich {
  background: linear-gradient(180deg, #FFFFFF 0%, #F8F8FA 100%);
}
[data-theme="light"] .profile-bio { color: #555; }
[data-theme="light"] .profile-tag {
  background: #F0F0F2;
  border-color: #E0E0E4;
  color: #1A1A1E;
}