:root {
  --color-bg: #0f172a;
  --color-bg-alt: #1e293b;
  --color-surface: #334155;
  --color-surface-hover: #475569;
  --color-primary: #0d9488;
  --color-primary-hover: #14b8a6;
  --color-accent: #f59e0b;
  --color-accent-muted: #d97706;
  --color-text: #f8fafc;
  --color-text-muted: #94a3b8;
  --color-border: #475569;
  --color-error: #ef4444;
  --color-success: #22c55e;
  --font-sans: "DM Sans", system-ui, sans-serif;
  --font-display: "Outfit", system-ui, sans-serif;
  --shadow-sm: 0 2px 8px rgba(15, 23, 42, 0.4);
  --shadow-md: 0 4px 16px rgba(15, 23, 42, 0.45);
  --shadow-lg: 0 8px 32px rgba(15, 23, 42, 0.5);
  --radius-sm: 6px;
  --radius-md: 10px;
  --radius-lg: 16px;
  --radius-full: 9999px;
  --space-xs: 0.25rem;
  --space-sm: 0.5rem;
  --space-md: 1rem;
  --space-lg: 1.5rem;
  --space-xl: 2rem;
  --space-2xl: 3rem;
  --space-3xl: 4rem;
  --transition-fast: 0.15s ease;
  --transition-normal: 0.25s ease;
  --header-height: 56px;
}

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

html {
  scroll-behavior: smooth;
}

body {
  margin: 0;
  font-family: var(--font-sans);
  font-size: 1rem;
  line-height: 1.6;
  color: var(--color-text);
  background-color: var(--color-bg);
  -webkit-font-smoothing: antialiased;
}

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

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

a:hover {
  color: var(--color-primary-hover);
}

.site-header {
  position: sticky;
  top: 0;
  z-index: 100;
  min-height: var(--header-height);
  padding: var(--space-sm) var(--space-md);
  background: var(--color-bg-alt);
  border-bottom: 1px solid var(--color-border);
  display: flex;
  align-items: center;
  justify-content: space-between;
  transition: box-shadow var(--transition-normal);
}

@media (min-width: 768px) {
  .site-header {
    padding: var(--space-sm) var(--space-lg);
  }
}

.site-header.scrolled {
  box-shadow: var(--shadow-md);
}

.brand {
  font-family: var(--font-display);
  font-weight: 600;
  font-size: clamp(0.9375rem, 2.5vw, 1.125rem);
  color: var(--color-text);
}

.brand:hover {
  color: var(--color-accent);
}

.nav-desktop {
  display: none;
}

.nav-desktop ul {
  list-style: none;
  margin: 0;
  padding: 0;
  display: flex;
  gap: var(--space-xl);
}

.nav-desktop a {
  color: var(--color-text-muted);
  font-weight: 500;
}

.nav-desktop a:hover {
  color: var(--color-text);
}

.menu-toggle {
  display: flex;
  flex-direction: column;
  gap: 5px;
  padding: var(--space-sm);
  background: none;
  border: none;
  cursor: pointer;
  color: var(--color-text);
  border-radius: var(--radius-sm);
  transition: background var(--transition-fast);
}

.menu-toggle:hover {
  background: var(--color-surface);
}

.menu-toggle span {
  display: block;
  width: 22px;
  height: 2px;
  background: currentColor;
  border-radius: var(--radius-full);
  transition: transform var(--transition-normal);
}

.menu-toggle[aria-expanded="true"] span:nth-child(1) {
  transform: translateY(7px) rotate(45deg);
}

.menu-toggle[aria-expanded="true"] span:nth-child(2) {
  opacity: 0;
}

.menu-toggle[aria-expanded="true"] span:nth-child(3) {
  transform: translateY(-7px) rotate(-45deg);
}

.nav-mobile {
  position: fixed;
  top: var(--header-height);
  left: 0;
  right: 0;
  bottom: 0;
  background: var(--color-bg-alt);
  padding: var(--space-xl);
  overflow-y: auto;
  transform: translateX(100%);
  transition: transform var(--transition-normal);
  z-index: 99;
}

.nav-mobile.is-open {
  transform: translateX(0);
}

.nav-mobile ul {
  list-style: none;
  margin: 0;
  padding: 0;
  display: flex;
  flex-direction: column;
  gap: var(--space-md);
}

.nav-mobile a {
  display: block;
  padding: var(--space-md);
  color: var(--color-text);
  font-weight: 500;
  border-radius: var(--radius-md);
  transition: background var(--transition-fast);
}

.nav-mobile a:hover {
  background: var(--color-surface);
}

main {
  min-height: calc(100vh - var(--header-height) - 200px);
}

.hero {
  padding: var(--space-2xl) var(--space-lg) var(--space-3xl);
  background: linear-gradient(180deg, var(--color-bg-alt) 0%, var(--color-bg) 100%);
}

.hero-inner {
  max-width: 1100px;
  margin: 0 auto;
  display: grid;
  grid-template-columns: 1fr;
  gap: var(--space-2xl);
  align-items: center;
}

.hero-media {
  text-align: center;
}

.hero-media img {
  margin: 0 auto;
  border-radius: var(--radius-lg);
  box-shadow: var(--shadow-lg);
}

.hero-badges {
  display: flex;
  flex-wrap: wrap;
  gap: var(--space-sm);
  justify-content: center;
  margin-top: var(--space-md);
}

.badge {
  display: inline-flex;
  align-items: center;
  gap: var(--space-xs);
  padding: var(--space-xs) var(--space-md);
  background: var(--color-surface);
  border-radius: var(--radius-full);
  font-size: 0.875rem;
  font-weight: 500;
  color: var(--color-text-muted);
}

.badge.rating {
  color: var(--color-accent);
}

.hero-content h1 {
  font-family: var(--font-display);
  font-size: clamp(1.75rem, 4vw, 2.25rem);
  font-weight: 700;
  margin: 0 0 var(--space-md);
  color: var(--color-text);
  line-height: 1.2;
}

.hero-content .lead {
  font-size: 1.0625rem;
  color: var(--color-text-muted);
  margin: 0 0 var(--space-lg);
  max-width: 52ch;
}

.hero-pricing {
  display: flex;
  align-items: baseline;
  gap: var(--space-md);
  margin-bottom: var(--space-lg);
}

.price-current {
  font-family: var(--font-display);
  font-size: 1.75rem;
  font-weight: 700;
  color: var(--color-accent);
}

.price-old {
  font-size: 1rem;
  color: var(--color-text-muted);
  text-decoration: line-through;
}

.hero-form {
  background: var(--color-surface);
  padding: var(--space-xl);
  border-radius: var(--radius-lg);
  border: 1px solid var(--color-border);
}

.hero-form .form-group {
  margin-bottom: var(--space-md);
}

.hero-form label {
  display: block;
  font-size: 0.875rem;
  font-weight: 500;
  margin-bottom: var(--space-xs);
  color: var(--color-text-muted);
}

.hero-form input,
.hero-form textarea {
  width: 100%;
  padding: var(--space-sm) var(--space-md);
  font-family: inherit;
  font-size: 1rem;
  border: 1px solid var(--color-border);
  border-radius: var(--radius-sm);
  background: var(--color-bg);
  color: var(--color-text);
  transition: border-color var(--transition-fast);
}

.hero-form input:focus,
.hero-form textarea:focus {
  outline: none;
  border-color: var(--color-primary);
}

.hero-form input.error,
.hero-form textarea.error {
  border-color: var(--color-error);
}

.hero-form .error-msg {
  font-size: 0.8125rem;
  color: var(--color-error);
  margin-top: var(--space-xs);
  display: none;
}

.hero-form .error-msg.visible {
  display: block;
}

.hero-form .checkbox-group {
  display: flex;
  align-items: flex-start;
  gap: var(--space-sm);
  margin-bottom: var(--space-lg);
}

.hero-form .checkbox-group input {
  width: auto;
  margin-top: 4px;
}

.hero-form .checkbox-group label {
  margin: 0;
  font-size: 0.875rem;
  color: var(--color-text-muted);
}

.hero-form .checkbox-group a {
  text-decoration: underline;
}

.btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  padding: var(--space-md) var(--space-xl);
  font-family: inherit;
  font-size: 1rem;
  font-weight: 600;
  border: none;
  border-radius: var(--radius-md);
  cursor: pointer;
  transition: background var(--transition-fast), transform var(--transition-fast);
}

.btn:hover {
  transform: translateY(-1px);
}

.btn-primary {
  background: var(--color-primary);
  color: var(--color-text);
  width: 100%;
}

.btn-primary:hover {
  background: var(--color-primary-hover);
  color: var(--color-text);
}

.btn-secondary {
  background: var(--color-surface);
  color: var(--color-text);
  border: 1px solid var(--color-border);
}

.btn-secondary:hover {
  background: var(--color-surface-hover);
  color: var(--color-text);
}

.section {
  padding: var(--space-3xl) var(--space-lg);
  max-width: 1100px;
  margin: 0 auto;
}

.section-alt {
  background: var(--color-bg-alt);
}

.section h2 {
  font-family: var(--font-display);
  font-size: clamp(1.5rem, 3vw, 1.875rem);
  font-weight: 700;
  margin: 0 0 var(--space-xl);
  color: var(--color-text);
  text-align: center;
}

.features-grid {
  display: grid;
  grid-template-columns: repeat(auto-fill, minmax(260px, 1fr));
  gap: var(--space-xl);
}

.feature-card {
  background: var(--color-surface);
  padding: var(--space-xl);
  border-radius: var(--radius-lg);
  border: 1px solid var(--color-border);
  transition: border-color var(--transition-normal), box-shadow var(--transition-normal);
}

.feature-card:hover {
  border-color: var(--color-primary);
  box-shadow: var(--shadow-md);
}

.feature-card h3 {
  font-family: var(--font-display);
  font-size: 1.125rem;
  font-weight: 600;
  margin: 0 0 var(--space-sm);
  color: var(--color-accent);
}

.feature-card p {
  margin: 0;
  font-size: 0.9375rem;
  color: var(--color-text-muted);
}

.benefits-list {
  list-style: none;
  margin: 0;
  padding: 0;
  display: grid;
  grid-template-columns: repeat(auto-fill, minmax(260px, 1fr));
  gap: var(--space-lg);
}

.benefits-list li {
  display: flex;
  flex-direction: column;
  align-items: flex-start;
  gap: var(--space-md);
  padding: var(--space-lg);
  background: var(--color-surface);
  border-radius: var(--radius-md);
  border-left: 4px solid var(--color-primary);
  transition: background var(--transition-fast);
}

.benefits-list li:hover {
  background: var(--color-surface-hover);
}

.benefits-list strong {
  color: var(--color-text);
  flex-shrink: 0;
}

.product-detail {
  display: grid;
  grid-template-columns: 1fr;
  gap: var(--space-2xl);
  align-items: start;
}

.product-detail img {
  border-radius: var(--radius-lg);
  box-shadow: var(--shadow-md);
}

.product-detail .content p {
  color: var(--color-text-muted);
  margin: 0 0 var(--space-md);
}

.usage-steps {
  list-style: none;
  margin: 0;
  padding: 0;
  counter-reset: step;
}

.usage-steps li {
  position: relative;
  padding-left: 3.5rem;
  padding-bottom: var(--space-xl);
  color: var(--color-text-muted);
}

.usage-steps li::before {
  counter-increment: step;
  content: counter(step);
  position: absolute;
  left: 0;
  top: 0;
  width: 2rem;
  height: 2rem;
  background: var(--color-primary);
  color: var(--color-text);
  border-radius: var(--radius-full);
  display: flex;
  align-items: center;
  justify-content: center;
  font-weight: 700;
  font-size: 0.875rem;
}

.ingredients-grid {
  display: grid;
  grid-template-columns: repeat(auto-fill, minmax(260px, 1fr));
  gap: var(--space-md);
}

.ingredient-item {
  padding: var(--space-md) var(--space-lg);
  background: var(--color-surface);
  border-radius: var(--radius-md);
  border: 1px solid var(--color-border);
  font-size: 0.9375rem;
  color: var(--color-text-muted);
}

.testimonials-grid {
  display: grid;
  grid-template-columns: repeat(auto-fill, minmax(260px, 1fr));
  gap: var(--space-xl);
}

.testimonial-card {
  background: var(--color-surface);
  padding: var(--space-xl);
  border-radius: var(--radius-lg);
  border: 1px solid var(--color-border);
  transition: box-shadow var(--transition-normal);
}

.testimonial-card:hover {
  box-shadow: var(--shadow-md);
}

.testimonial-card blockquote {
  margin: 0 0 var(--space-md);
  font-size: 0.9375rem;
  color: var(--color-text-muted);
  font-style: italic;
}

.testimonial-card cite {
  font-size: 0.875rem;
  color: var(--color-accent-muted);
  font-style: normal;
}

.faq-list {
  max-width: 640px;
  margin: 0 auto;
}

.faq-item {
  border-bottom: 1px solid var(--color-border);
}

.faq-item summary {
  padding: var(--space-lg) 0;
  font-weight: 600;
  cursor: pointer;
  color: var(--color-text);
  list-style: none;
  display: flex;
  justify-content: space-between;
  align-items: center;
  gap: var(--space-md);
  transition: color var(--transition-fast);
}

.faq-item summary::-webkit-details-marker {
  display: none;
}

.faq-item summary::after {
  content: "+";
  font-size: 1.25rem;
  color: var(--color-primary);
  flex-shrink: 0;
}

.faq-item[open] summary::after {
  content: "−";
}

.faq-item summary:hover {
  color: var(--color-primary);
}

.faq-item .faq-answer {
  padding-bottom: var(--space-lg);
  color: var(--color-text-muted);
  font-size: 0.9375rem;
}

.cta-block {
  text-align: center;
  padding: var(--space-3xl) var(--space-lg);
  background: linear-gradient(135deg, var(--color-primary) 0%, #0f766e 100%);
  border-radius: var(--radius-lg);
}

.cta-block h2 {
  margin-bottom: var(--space-md);
  color: var(--color-text);
}

.cta-block p {
  margin: 0 0 var(--space-xl);
  color: rgba(255, 255, 255, 0.9);
  max-width: 42ch;
  margin-left: auto;
  margin-right: auto;
}

.disclaimer {
  padding: var(--space-lg) var(--space-lg);
  background: var(--color-bg-alt);
  border-top: 1px solid var(--color-border);
  font-size: 0.8125rem;
  color: var(--color-text-muted);
  max-width: 1100px;
  margin: 0 auto;
}

.site-footer {
  padding: var(--space-2xl) var(--space-lg);
  background: var(--color-bg-alt);
  border-top: 1px solid var(--color-border);
}

.footer-inner {
  max-width: 1100px;
  margin: 0 auto;
  display: grid;
  grid-template-columns: 1fr;
  gap: var(--space-xl);
  text-align: center;
}

.footer-nav {
  display: flex;
  flex-wrap: wrap;
  justify-content: center;
  gap: var(--space-md);
}

.footer-nav a {
  color: var(--color-text-muted);
  font-size: 0.9375rem;
}

.footer-nav a:hover {
  color: var(--color-text);
}

.footer-contacts {
  font-size: 0.9375rem;
  color: var(--color-text-muted);
}

.footer-contacts p {
  margin: 0 0 var(--space-xs);
}

.footer-copy {
  font-size: 0.875rem;
  color: var(--color-text-muted);
  margin: 0;
}

.cookie-banner {
  position: fixed;
  bottom: 0;
  left: 0;
  right: 0;
  z-index: 200;
  background: var(--color-surface);
  border-top: 1px solid var(--color-border);
  padding: var(--space-lg);
  box-shadow: 0 -4px 20px rgba(0, 0, 0, 0.3);
  display: none;
}

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

.cookie-banner-inner {
  max-width: 1100px;
  margin: 0 auto;
}

.cookie-banner p {
  margin: 0 0 var(--space-md);
  font-size: 0.9375rem;
  color: var(--color-text-muted);
}

.cookie-banner .cookie-actions {
  display: flex;
  flex-wrap: wrap;
  gap: var(--space-sm);
}

.cookie-settings {
  display: none;
  margin-top: var(--space-lg);
  padding-top: var(--space-lg);
  border-top: 1px solid var(--color-border);
}

.cookie-settings.visible {
  display: block;
}

.cookie-category {
  display: flex;
  align-items: center;
  justify-content: space-between;
  padding: var(--space-md) 0;
  border-bottom: 1px solid var(--color-border);
}

.cookie-category:last-child {
  border-bottom: none;
}

.cookie-category label {
  font-size: 0.9375rem;
  color: var(--color-text);
}

.cookie-category .toggle {
  width: 44px;
  height: 24px;
  background: var(--color-border);
  border-radius: var(--radius-full);
  position: relative;
  cursor: pointer;
  flex-shrink: 0;
}

.cookie-category .toggle::after {
  content: "";
  position: absolute;
  width: 18px;
  height: 18px;
  background: var(--color-text);
  border-radius: 50%;
  top: 3px;
  left: 3px;
  transition: transform var(--transition-fast);
}

.cookie-category .toggle.active {
  background: var(--color-primary);
}

.cookie-category .toggle.active::after {
  transform: translateX(20px);
}

.cookie-category .toggle.disabled {
  pointer-events: none;
  opacity: 0.7;
}

.legal-page {
  padding: var(--space-2xl) var(--space-lg);
  max-width: 720px;
  margin: 0 auto;
}

.legal-page h1 {
  font-family: var(--font-display);
  font-size: 1.75rem;
  margin: 0 0 var(--space-xl);
  color: var(--color-text);
}

.legal-page h2 {
  font-size: 1.25rem;
  margin: var(--space-xl) 0 var(--space-md);
  text-align: left;
}

.legal-page p,
.legal-page ul {
  color: var(--color-text-muted);
  font-size: 0.9375rem;
  margin: 0 0 var(--space-md);
}

.legal-page ul {
  padding-left: 1.5rem;
}

.legal-page .last-update {
  font-size: 0.875rem;
  color: var(--color-text-muted);
  margin-bottom: var(--space-xl);
}

.legal-page .home-link {
  display: inline-flex;
  align-items: center;
  gap: var(--space-sm);
  margin-bottom: var(--space-xl);
  color: var(--color-primary);
  font-weight: 500;
}

.legal-page .home-link:hover {
  color: var(--color-primary-hover);
}

.thank-you-page {
  min-height: 100vh;
  display: flex;
  flex-direction: column;
  align-items: center;
  justify-content: center;
  padding: var(--space-xl);
  text-align: center;
}

.thank-you-page h1 {
  font-family: var(--font-display);
  font-size: clamp(1.5rem, 4vw, 2rem);
  margin: 0 0 var(--space-md);
  color: var(--color-text);
}

.thank-you-page p {
  color: var(--color-text-muted);
  margin: 0 0 var(--space-xl);
  max-width: 42ch;
}

.thank-you-page .mailto-btn {
  margin-bottom: var(--space-lg);
}

.thank-you-extra {
  margin-top: var(--space-2xl);
  padding-top: var(--space-xl);
  border-top: 1px solid var(--color-border);
}

.thank-you-extra p {
  margin: 0 0 var(--space-sm);
}

.contact-form-section {
  max-width: 560px;
  margin: 0 auto;
}

.contact-form-section .form-group {
  margin-bottom: var(--space-md);
}

.contact-form-section label {
  display: block;
  font-size: 0.875rem;
  font-weight: 500;
  margin-bottom: var(--space-xs);
  color: var(--color-text-muted);
}

.contact-form-section input,
.contact-form-section textarea {
  width: 100%;
  padding: var(--space-sm) var(--space-md);
  font-family: inherit;
  font-size: 1rem;
  border: 1px solid var(--color-border);
  border-radius: var(--radius-sm);
  background: var(--color-bg);
  color: var(--color-text);
}

.contact-form-section input:focus,
.contact-form-section textarea:focus {
  outline: none;
  border-color: var(--color-primary);
}

.contact-form-section input.error,
.contact-form-section textarea.error {
  border-color: var(--color-error);
}

.contact-form-section .error-msg {
  font-size: 0.8125rem;
  color: var(--color-error);
  margin-top: var(--space-xs);
  display: none;
}

.contact-form-section .error-msg.visible {
  display: block;
}

.contact-form-section .checkbox-group {
  display: flex;
  align-items: flex-start;
  gap: var(--space-sm);
  margin-bottom: var(--space-lg);
}

.contact-form-section .checkbox-group input {
  width: auto;
  margin-top: 4px;
}

.contact-form-section .checkbox-group label {
  margin: 0;
}

@media (min-width: 768px) {
  .hero-inner {
    grid-template-columns: 1fr 1fr;
  }

  .hero-media {
    text-align: left;
  }

  .hero-badges {
    justify-content: flex-start;
  }

  .product-detail {
    grid-template-columns: 1fr 1fr;
  }
}

@media (min-width: 1000px) {
  .menu-toggle {
    display: none;
  }

  .nav-desktop {
    display: block;
  }

  .nav-mobile {
    display: none;
  }

  .footer-inner {
    grid-template-columns: 1fr auto 1fr;
    text-align: left;
  }

  .footer-nav {
    justify-content: flex-start;
  }
}