/* Antilabs — minimal, professional, accessible */

:root {
  color-scheme: light;

  --color-bg: #fafaf9;
  --color-bg-alt: #f3f2ef;
  --color-surface: #ffffff;
  --color-text: #1a1a18;
  --color-text-muted: #5c5c58;
  --color-accent: #2d6a4f;
  --color-accent-hover: #1b4332;
  --color-border: #e5e4e0;
  --color-focus: #40916c;
  --color-header-bg: rgba(250, 250, 249, 0.85);
  --color-shadow: rgba(0, 0, 0, 0.06);

  --font-sans: "Inter", system-ui, -apple-system, "Segoe UI", Roboto, sans-serif;

  --space-xs: 0.5rem;
  --space-sm: 1rem;
  --space-md: 1.5rem;
  --space-lg: 3rem;
  --space-xl: 5rem;

  --radius: 6px;
  --shadow: 0 1px 3px var(--color-shadow);
  --transition: 180ms ease;
  --max-width: 68rem;
}

@media (prefers-color-scheme: dark) {
  :root:not([data-theme="light"]) {
    color-scheme: dark;

    --color-bg: #121211;
    --color-bg-alt: #1a1a18;
    --color-surface: #222220;
    --color-text: #ececea;
    --color-text-muted: #a8a8a4;
    --color-accent: #52b788;
    --color-accent-hover: #74c69d;
    --color-border: #333330;
    --color-focus: #95d5b2;
    --color-header-bg: rgba(18, 18, 17, 0.88);
    --color-shadow: rgba(0, 0, 0, 0.35);
  }
}

[data-theme="dark"] {
  color-scheme: dark;

  --color-bg: #121211;
  --color-bg-alt: #1a1a18;
  --color-surface: #222220;
  --color-text: #ececea;
  --color-text-muted: #a8a8a4;
  --color-accent: #52b788;
  --color-accent-hover: #74c69d;
  --color-border: #333330;
  --color-focus: #95d5b2;
  --color-header-bg: rgba(18, 18, 17, 0.88);
  --color-shadow: rgba(0, 0, 0, 0.35);
}

[data-theme="light"] {
  color-scheme: light;
}

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

html {
  scroll-behavior: smooth;
  -webkit-text-size-adjust: 100%;
}

body {
  margin: 0;
  font-family: var(--font-sans);
  font-size: 1.0625rem;
  line-height: 1.65;
  color: var(--color-text);
  background: var(--color-bg);
  -webkit-font-smoothing: antialiased;
}

/* Skip link */
.skip-link {
  position: absolute;
  top: -100%;
  left: var(--space-sm);
  padding: var(--space-xs) var(--space-sm);
  background: var(--color-accent);
  color: #fff;
  border-radius: var(--radius);
  z-index: 100;
  text-decoration: none;
  font-size: 0.875rem;
}

.skip-link:focus {
  top: var(--space-sm);
}

/* Layout */
.container {
  width: 100%;
  max-width: var(--max-width);
  margin-inline: auto;
  padding-inline: clamp(1.25rem, 4vw, 2.5rem);
}

/* Header */
.header {
  position: sticky;
  top: 0;
  z-index: 50;
  background: var(--color-header-bg);
  backdrop-filter: blur(12px);
  -webkit-backdrop-filter: blur(12px);
  border-bottom: 1px solid var(--color-border);
}

.header__inner {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: var(--space-sm);
  height: 3.75rem;
}

.logo {
  display: flex;
  align-items: center;
  gap: 0.625rem;
  text-decoration: none;
  color: var(--color-text);
  font-weight: 600;
  font-size: 1.125rem;
  letter-spacing: -0.02em;
  flex-shrink: 0;
}

.logo__mark {
  color: var(--color-accent);
}

.header__end {
  display: flex;
  align-items: center;
  gap: clamp(0.75rem, 2vw, 1.25rem);
  flex-wrap: wrap;
  justify-content: flex-end;
}

.header__controls {
  display: flex;
  align-items: center;
  gap: 0.5rem;
  flex-shrink: 0;
}

.nav {
  display: flex;
  gap: clamp(0.75rem, 2.5vw, 1.5rem);
  list-style: none;
  margin: 0;
  padding: 0;
}

.nav a {
  color: var(--color-text-muted);
  text-decoration: none;
  font-size: 0.9375rem;
  font-weight: 500;
  transition: color var(--transition);
}

.nav a:hover,
.nav a:focus-visible {
  color: var(--color-accent);
}

/* Language switcher */
.lang-switch {
  display: inline-flex;
  align-items: center;
  border: 1px solid var(--color-border);
  border-radius: var(--radius);
  overflow: hidden;
  font-size: 0.75rem;
  font-weight: 600;
}

.lang-switch a {
  padding: 0.35rem 0.55rem;
  text-decoration: none;
  color: var(--color-text-muted);
  transition: background var(--transition), color var(--transition);
}

.lang-switch a:hover,
.lang-switch a:focus-visible {
  color: var(--color-accent);
}

.lang-switch a[aria-current="page"] {
  background: var(--color-accent);
  color: #fff;
}

.lang-switch a[aria-current="page"]:hover,
.lang-switch a[aria-current="page"]:focus-visible {
  color: #fff;
}

/* Theme toggle */
.theme-toggle {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  width: 2.25rem;
  height: 2.25rem;
  padding: 0;
  border: 1px solid var(--color-border);
  border-radius: var(--radius);
  background: var(--color-surface);
  color: var(--color-text-muted);
  cursor: pointer;
  transition: color var(--transition), border-color var(--transition), background var(--transition);
}

.theme-toggle:hover,
.theme-toggle:focus-visible {
  color: var(--color-accent);
  border-color: var(--color-accent);
}

.theme-toggle svg {
  width: 1.125rem;
  height: 1.125rem;
}

.theme-toggle .icon-sun,
.theme-toggle .icon-moon,
.theme-toggle .icon-auto {
  display: none;
}

.theme-toggle[data-theme-mode="light"] .icon-sun,
.theme-toggle[data-theme-mode="dark"] .icon-moon,
.theme-toggle[data-theme-mode="auto"] .icon-auto {
  display: block;
}

/* Hero */
.hero {
  padding-block: clamp(4rem, 12vw, 8rem);
}

.hero__eyebrow {
  font-size: 0.8125rem;
  font-weight: 500;
  letter-spacing: 0.06em;
  text-transform: uppercase;
  color: var(--color-accent);
  margin: 0 0 var(--space-md);
}

.hero__title {
  font-size: clamp(2.25rem, 6vw, 3.75rem);
  font-weight: 700;
  line-height: 1.12;
  letter-spacing: -0.03em;
  margin: 0 0 var(--space-md);
  max-width: 16ch;
}

.hero__lead {
  font-size: clamp(1.0625rem, 2vw, 1.25rem);
  color: var(--color-text-muted);
  max-width: 42rem;
  margin: 0 0 var(--space-lg);
}

.hero__lead strong {
  color: var(--color-text);
  font-weight: 600;
}

/* Sections */
.section {
  padding-block: clamp(3rem, 8vw, 5rem);
}

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

.section--contact {
  background: var(--color-surface);
  border-top: 1px solid var(--color-border);
}

.section__title {
  font-size: clamp(1.5rem, 3vw, 2rem);
  font-weight: 700;
  letter-spacing: -0.02em;
  margin: 0 0 var(--space-md);
}

.section__lead {
  color: var(--color-text-muted);
  max-width: 38rem;
  margin: 0 0 var(--space-lg);
}

/* Grid & Cards */
.grid {
  display: grid;
  gap: var(--space-md);
}

.grid--3 {
  grid-template-columns: repeat(auto-fit, minmax(min(100%, 17rem), 1fr));
}

.card {
  background: var(--color-surface);
  border: 1px solid var(--color-border);
  border-radius: var(--radius);
  padding: var(--space-md);
  box-shadow: var(--shadow);
}

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

.card__icon {
  font-size: 1.25rem;
  color: var(--color-accent);
  margin-bottom: var(--space-sm);
  line-height: 1;
}

.card__title {
  font-size: 1.125rem;
  font-weight: 600;
  margin: 0 0 var(--space-xs);
}

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

/* Services */
.services-list {
  list-style: none;
  padding: 0;
  margin: 0;
  display: flex;
  flex-direction: column;
  gap: var(--space-md);
  max-width: 42rem;
}

.services-list li {
  padding-left: 1.25rem;
  position: relative;
  color: var(--color-text-muted);
}

.services-list li::before {
  content: "";
  position: absolute;
  left: 0;
  top: 0.65em;
  width: 6px;
  height: 6px;
  border-radius: 50%;
  background: var(--color-accent);
}

.services-list strong {
  color: var(--color-text);
}

/* Regions */
.regions {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(min(100%, 14rem), 1fr));
  gap: var(--space-md);
}

.region {
  padding: var(--space-md);
  border-left: 3px solid var(--color-accent);
}

.region h3 {
  font-size: 1rem;
  font-weight: 600;
  margin: 0 0 0.25rem;
}

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

/* Contact */
.contact {
  text-align: center;
}

.contact .section__title,
.contact .section__lead {
  margin-inline: auto;
}

.contact__form {
  display: flex;
  flex-direction: column;
  align-items: center;
  gap: var(--space-md);
  margin-top: var(--space-lg);
}

.contact__hint {
  font-size: 0.8125rem;
  color: var(--color-text-muted);
  margin: 0;
}

/* FAQ */
.faq {
  max-width: 42rem;
}

.faq__item {
  border-bottom: 1px solid var(--color-border);
  padding-block: var(--space-md);
}

.faq__item:first-child {
  border-top: 1px solid var(--color-border);
}

.faq dt {
  font-weight: 600;
  margin-bottom: var(--space-xs);
}

.faq dd {
  margin: 0;
  color: var(--color-text-muted);
  font-size: 0.9375rem;
}

/* Buttons */
.btn {
  display: inline-flex;
  align-items: center;
  gap: 0.5rem;
  padding: 0.75rem 1.5rem;
  font-family: inherit;
  font-size: 0.9375rem;
  font-weight: 600;
  text-decoration: none;
  border-radius: var(--radius);
  border: none;
  cursor: pointer;
  transition: background var(--transition), opacity var(--transition), transform var(--transition);
}

.btn--primary {
  background: var(--color-accent);
  color: #fff;
}

.btn--primary:hover,
.btn--primary:focus-visible {
  background: var(--color-accent-hover);
}

.btn--contact {
  opacity: 0.45;
  pointer-events: none;
  cursor: not-allowed;
}

.btn--contact.is-enabled {
  opacity: 1;
  pointer-events: auto;
  cursor: pointer;
}

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

/* Footer */
.footer {
  padding-block: var(--space-lg);
  border-top: 1px solid var(--color-border);
}

.footer__inner {
  text-align: center;
}

.footer__brand {
  font-weight: 600;
  margin: 0 0 0.25rem;
  font-size: 0.9375rem;
}

.footer__tagline {
  margin: 0;
  font-size: 0.8125rem;
  color: var(--color-text-muted);
}

/* Focus */
:focus-visible {
  outline: 2px solid var(--color-focus);
  outline-offset: 2px;
}

/* Responsive */
@media (max-width: 720px) {
  .header__inner {
    flex-wrap: wrap;
    height: auto;
    padding-block: 0.75rem;
  }

  .nav {
    order: 3;
    width: 100%;
    justify-content: center;
    flex-wrap: wrap;
    gap: 0.5rem 0.75rem;
  }
}

@media (max-width: 540px) {
  .nav a {
    font-size: 0.8125rem;
  }
}

/* Reduced motion */
@media (prefers-reduced-motion: reduce) {
  html {
    scroll-behavior: auto;
  }

  .btn--contact.is-enabled:hover {
    transform: none;
  }
}

/* Print */
@media print {
  .header, .contact__form, .skip-link, .header__controls {
    display: none;
  }
}