/* ============ Tokens ============ */
:root {
  --text-xs: clamp(0.75rem, 0.7rem + 0.25vw, 0.875rem);
  --text-sm: clamp(0.875rem, 0.8rem + 0.35vw, 1rem);
  --text-base: clamp(1rem, 0.95rem + 0.25vw, 1.125rem);
  --text-lg: clamp(1.125rem, 1rem + 0.75vw, 1.5rem);
  --text-xl: clamp(1.5rem, 1.2rem + 1.25vw, 2.25rem);
  --text-2xl: clamp(2rem, 1.2rem + 2.5vw, 3.5rem);
  --text-3xl: clamp(2.5rem, 1rem + 4vw, 5rem);

  --space-1: 0.25rem; --space-2: 0.5rem; --space-3: 0.75rem; --space-4: 1rem;
  --space-5: 1.25rem; --space-6: 1.5rem; --space-8: 2rem; --space-10: 2.5rem;
  --space-12: 3rem; --space-16: 4rem; --space-20: 5rem; --space-24: 6rem; --space-32: 8rem;

  /* Palette derived from the logo: anthracite + warm stone, one moss-green accent */
  --color-bg: oklch(0.965 0.006 80);          /* warm stone */
  --color-surface: oklch(0.99 0.003 80);
  --color-surface-offset: oklch(0.94 0.008 80);
  --color-divider: oklch(0.2 0.01 250 / 0.1);
  --color-border: oklch(0.2 0.01 250 / 0.14);

  --color-text: oklch(0.25 0.012 250);        /* #1e242c-ish anthracite */
  --color-text-muted: oklch(0.5 0.012 250);
  --color-text-faint: oklch(0.7 0.008 250);
  --color-text-inverse: oklch(0.97 0.004 80);

  --color-dark: oklch(0.25 0.012 250);
  --color-dark-2: oklch(0.3 0.012 250);

  --color-primary: oklch(0.42 0.06 165);      /* moss green */
  --color-primary-hover: oklch(0.36 0.06 165);
  --color-primary-active: oklch(0.3 0.055 165);

  --radius-sm: 0.25rem; --radius-md: 0.375rem; --radius-lg: 0.5rem;
  --transition-interactive: 180ms cubic-bezier(0.16, 1, 0.3, 1);
  --ease-out: cubic-bezier(0.16, 1, 0.3, 1);
  --shadow-sm: 0 1px 2px oklch(0.2 0.01 250 / 0.06);
  --shadow-md: 0 8px 24px oklch(0.2 0.01 250 / 0.1);

  --content-wide: 1240px;
  --gutter: clamp(var(--space-5), 4vw, var(--space-12));

  --font-display: 'Cabinet Grotesk', 'Helvetica Neue', Arial, sans-serif;
  --font-body: 'Satoshi', 'Helvetica Neue', Arial, sans-serif;
}

/* ============ Layout primitives ============ */
.container {
  width: min(100% - 2 * var(--gutter), var(--content-wide));
  margin-inline: auto;
}

.skip-link {
  position: absolute; left: var(--space-4); top: -100px;
  background: var(--color-text); color: var(--color-text-inverse);
  padding: var(--space-2) var(--space-4); border-radius: var(--radius-sm); z-index: 100;
}
.skip-link:focus { top: var(--space-4); }

.eyebrow {
  font-size: var(--text-xs); letter-spacing: 0.14em; text-transform: uppercase;
  color: var(--color-primary); font-weight: 700; margin-bottom: var(--space-4);
}
h1, h2, h3 { font-family: var(--font-display); line-height: 1.08; letter-spacing: -0.015em; text-wrap: balance; }
h2 { font-size: var(--text-2xl); font-weight: 700; }
h3 { font-size: var(--text-lg); font-weight: 700; font-family: var(--font-body); letter-spacing: -0.005em; }
p { max-width: 65ch; }
.section-lead { color: var(--color-text-muted); margin-top: var(--space-4); }
.section-head { max-width: 760px; margin-bottom: clamp(var(--space-10), 5vw, var(--space-16)); }

/* Buttons */
.btn {
  display: inline-flex; align-items: center; justify-content: center; gap: var(--space-2);
  min-height: 44px; padding: var(--space-3) var(--space-6);
  font-size: var(--text-sm); font-weight: 700; letter-spacing: 0.01em;
  border-radius: var(--radius-sm); text-decoration: none; cursor: pointer; border: 1px solid transparent;
  white-space: nowrap;
}
.btn-primary { background: var(--color-primary); color: var(--color-text-inverse); }
.btn-primary:hover { background: var(--color-primary-hover); }
.btn-primary:active { background: var(--color-primary-active); }
.btn-ghost { background: oklch(1 0 0 / 0.12); color: #fff; border-color: oklch(1 0 0 / 0.5); backdrop-filter: blur(6px); }
.btn-ghost:hover { background: oklch(1 0 0 / 0.22); border-color: #fff; }
.btn-lg { padding: var(--space-4) var(--space-8); }

/* ============ Header ============ */
.site-header {
  position: sticky; top: 0; z-index: 50;
  background: oklch(from var(--color-bg) l c h / 0.88);
  backdrop-filter: blur(12px); -webkit-backdrop-filter: blur(12px);
  border-bottom: 1px solid transparent;
  transition: border-color 0.3s var(--ease-out), box-shadow 0.3s var(--ease-out);
}
.site-header.is-scrolled { border-bottom-color: var(--color-divider); box-shadow: var(--shadow-sm); }
.header-inner { display: flex; align-items: center; justify-content: space-between; gap: var(--space-6); min-height: 76px; }
.brand { flex-shrink: 0; }
.brand img { height: 44px; width: auto; display: block; }
.site-nav ul { display: flex; gap: var(--space-8); list-style: none; }
.site-nav li { white-space: nowrap; }
.site-nav a {
  font-size: var(--text-sm); font-weight: 500; color: var(--color-text); text-decoration: none;
  padding-block: var(--space-2); position: relative;
}
.site-nav a::after {
  content: ''; position: absolute; left: 0; right: 0; bottom: 0; height: 2px;
  background: var(--color-primary); transform: scaleX(0); transform-origin: left;
  transition: transform 0.25s var(--ease-out);
}
.site-nav a:hover::after, .site-nav a.is-active::after { transform: scaleX(1); }
.header-actions { display: flex; align-items: center; gap: var(--space-5); }

.lang-switch { display: flex; border: 1px solid var(--color-border); border-radius: var(--radius-sm); overflow: hidden; }
.lang-switch button {
  background: transparent; border: 0; font: inherit; font-size: var(--text-xs); font-weight: 700;
  letter-spacing: 0.06em; color: var(--color-text-muted); padding: 0 var(--space-3); min-height: 36px; cursor: pointer;
}
.lang-switch button + button { border-left: 1px solid var(--color-border); }
.lang-switch button[aria-pressed='true'] { background: var(--color-text); color: var(--color-text-inverse); }
.lang-switch button:hover:not([aria-pressed='true']) { color: var(--color-text); background: var(--color-surface-offset); }

.menu-toggle {
  display: none; width: 44px; height: 44px; background: transparent; border: 0; cursor: pointer;
  flex-direction: column; justify-content: center; align-items: center; gap: 6px;
}
.menu-toggle span { display: block; width: 22px; height: 2px; background: var(--color-text); transition: transform 0.25s var(--ease-out), opacity 0.2s; }
.menu-toggle[aria-expanded='true'] span:first-child { transform: translateY(4px) rotate(45deg); }
.menu-toggle[aria-expanded='true'] span:last-child { transform: translateY(-4px) rotate(-45deg); }

.mobile-nav { display: none; flex-direction: column; border-top: 1px solid var(--color-divider); padding: var(--space-4) var(--gutter) var(--space-6); gap: var(--space-1); }
.mobile-nav a { padding: var(--space-3) 0; font-weight: 500; color: var(--color-text); text-decoration: none; font-size: var(--text-base); }
.mobile-nav:not([hidden]) { display: flex; }

/* ============ Hero ============ */
.hero {
  position: relative; min-height: min(88vh, 860px); display: grid; align-items: end;
  color: #fff; isolation: isolate; overflow: hidden;
}
.hero-media, .hero-media img { position: absolute; inset: 0; width: 100%; height: 100%; object-fit: cover; object-position: 60% 50%; z-index: -2; }
.hero-scrim {
  position: absolute; inset: 0; z-index: -1;
  background:
    linear-gradient(to top, oklch(0.2 0.01 250 / 0.82) 0%, oklch(0.2 0.01 250 / 0.35) 45%, oklch(0.2 0.01 250 / 0.05) 100%),
    linear-gradient(to right, oklch(0.2 0.01 250 / 0.45) 0%, transparent 60%);
}
.hero-content { padding-block: clamp(var(--space-16), 10vw, var(--space-32)) clamp(var(--space-12), 7vw, var(--space-24)); max-width: 820px; margin-left: 0; }
.hero .eyebrow { color: oklch(0.9 0.02 165); }
.hero h1 { font-size: clamp(2.25rem, 1rem + 4.5vw, 4.75rem); font-weight: 700; margin-bottom: var(--space-6); max-width: 14ch; }
.hero-lead { font-size: var(--text-lg); line-height: 1.5; color: oklch(0.95 0.004 80); max-width: 52ch; font-weight: 400; }
.hero-actions { display: flex; flex-wrap: wrap; gap: var(--space-3); margin-top: var(--space-8); }

/* Hero container alignment: left edge aligned with page gutter */
.hero .container { margin-left: max(var(--gutter), (100% - var(--content-wide)) / 2); margin-right: auto; }

/* ============ Intro ============ */
.intro { padding-block: clamp(var(--space-16), 8vw, var(--space-24)); }
.intro-grid { display: grid; grid-template-columns: minmax(0, 5fr) minmax(0, 7fr); gap: clamp(var(--space-10), 6vw, var(--space-24)); align-items: start; }
.intro-text h2 { font-size: var(--text-xl); font-weight: 700; max-width: 22ch; }
.facts { display: grid; gap: var(--space-8); }
.facts > div { padding-top: var(--space-5); border-top: 1px solid var(--color-divider); display: grid; grid-template-columns: minmax(0, 1fr) minmax(0, 1.6fr); gap: var(--space-4); }
.facts dt { font-weight: 700; font-size: var(--text-base); }
.facts dd { color: var(--color-text-muted); font-size: var(--text-sm); line-height: 1.6; }

/* ============ Concepts ============ */
.concepts { background: var(--color-surface); padding-block: clamp(var(--space-16), 8vw, var(--space-24)); border-top: 1px solid var(--color-divider); }
.concept-grid { display: grid; grid-template-columns: repeat(2, minmax(0, 1fr)); gap: clamp(var(--space-8), 4vw, var(--space-12)) clamp(var(--space-6), 3vw, var(--space-10)); }
.concept figure { overflow: hidden; border-radius: var(--radius-md); background: var(--color-surface-offset); aspect-ratio: 4 / 3; }
.concept img { width: 100%; height: 100%; object-fit: cover; transition: transform 1.2s var(--ease-out); }
.concept:hover img { transform: scale(1.03); }
.concept-body { padding-top: var(--space-5); }
.concept-index { font-family: var(--font-display); font-weight: 800; color: var(--color-text-faint); font-size: var(--text-sm); letter-spacing: 0.08em; margin-bottom: var(--space-2); }
.concept h3 { margin-bottom: var(--space-3); font-size: var(--text-lg); }
.concept p { color: var(--color-text-muted); font-size: var(--text-sm); line-height: 1.65; max-width: 48ch; }
.tags { list-style: none; display: flex; flex-wrap: wrap; gap: var(--space-2); margin-top: var(--space-4); }
.tags li { font-size: var(--text-xs); font-weight: 500; color: var(--color-text); padding: var(--space-1) var(--space-3); border: 1px solid var(--color-border); border-radius: var(--radius-sm); }

.concept-feature { grid-column: 1 / -1; display: grid; grid-template-columns: minmax(0, 7fr) minmax(0, 5fr); gap: clamp(var(--space-6), 4vw, var(--space-12)); align-items: end; }
.concept-feature figure { aspect-ratio: 3 / 2; }
.concept-feature .concept-body { padding-top: 0; padding-bottom: var(--space-4); }
.concept-feature h3 { font-family: var(--font-display); font-size: var(--text-xl); letter-spacing: -0.015em; }
.concept-feature p { font-size: var(--text-base); max-width: 44ch; }

/* ============ Factory full bleed ============ */
.factory { position: relative; height: clamp(360px, 60vh, 640px); overflow: hidden; }
.factory > img { width: 100%; height: 100%; object-fit: cover; }
.factory-caption { position: absolute; left: 0; right: 0; bottom: clamp(var(--space-8), 5vw, var(--space-16)); color: #fff; }
.factory-caption p { font-family: var(--font-display); font-size: var(--text-xl); font-weight: 700; line-height: 1.15; max-width: 22ch; text-shadow: 0 2px 24px oklch(0.2 0.01 250 / 0.6); }
.factory::after { content: ''; position: absolute; inset: 0; background: linear-gradient(to top, oklch(0.2 0.01 250 / 0.7), transparent 55%); pointer-events: none; }
.factory-caption { z-index: 1; }

/* ============ Process ============ */
.process { background: var(--color-dark); color: var(--color-text-inverse); padding-block: clamp(var(--space-16), 8vw, var(--space-24)); }
.process .eyebrow { color: oklch(0.78 0.06 165); }
.process .section-head { margin-bottom: clamp(var(--space-10), 5vw, var(--space-16)); }
.steps { list-style: none; display: grid; grid-template-columns: repeat(4, minmax(0, 1fr)); gap: var(--space-8); counter-reset: step; }
.steps li { padding-top: var(--space-5); border-top: 1px solid oklch(1 0 0 / 0.18); }
.step-num { font-family: var(--font-display); font-weight: 800; font-size: var(--text-2xl); line-height: 1; color: oklch(0.78 0.06 165); display: block; margin-bottom: var(--space-5); }
.steps h3 { color: #fff; margin-bottom: var(--space-3); }
.steps p { color: oklch(0.8 0.006 80); font-size: var(--text-sm); line-height: 1.65; }

/* ============ About ============ */
.about { padding-block: clamp(var(--space-16), 8vw, var(--space-24)); }
.about-grid { display: grid; grid-template-columns: minmax(0, 5fr) minmax(0, 7fr); gap: clamp(var(--space-10), 6vw, var(--space-24)); }
.about h2 { font-size: var(--text-xl); max-width: 20ch; }
.about-text p + p { margin-top: var(--space-5); }
.about-text p { color: var(--color-text-muted); line-height: 1.7; }
.audience { list-style: none; display: grid; grid-template-columns: repeat(2, minmax(0, 1fr)); gap: var(--space-3) var(--space-8); margin-top: var(--space-8); padding-top: var(--space-6); border-top: 1px solid var(--color-divider); }
.audience li { font-weight: 500; font-size: var(--text-sm); display: flex; gap: var(--space-3); align-items: center; }
.audience li::before { content: ''; width: 8px; height: 8px; background: var(--color-primary); flex: none; }

/* ============ Contact ============ */
.contact { background: var(--color-surface); border-top: 1px solid var(--color-divider); padding-block: clamp(var(--space-16), 8vw, var(--space-24)); }
.contact-grid { display: grid; grid-template-columns: minmax(0, 7fr) minmax(0, 5fr); gap: clamp(var(--space-10), 6vw, var(--space-24)); align-items: start; }
.contact .btn-lg { margin-top: var(--space-8); white-space: normal; text-align: left; }
.contact-details { font-style: normal; line-height: 1.7; padding: var(--space-8); background: var(--color-bg); border-radius: var(--radius-md); }
.contact-details p + p { margin-top: var(--space-3); }
.contact-details a { color: var(--color-primary); font-weight: 500; }

/* ============ Footer ============ */
.site-footer { background: var(--color-dark); color: oklch(0.8 0.006 80); padding-block: var(--space-12) var(--space-8); }
.footer-inner { display: grid; gap: var(--space-5); }
.footer-logo { height: 30px; width: auto; }
.footer-meta { font-size: var(--text-sm); }
.footer-meta a { color: inherit; }
.footer-copy { font-size: var(--text-xs); color: oklch(0.6 0.006 80); }

/* ============ Reveal motion ============ */
@media (prefers-reduced-motion: no-preference) {
  .reveal { opacity: 0; transform: translateY(14px); transition: opacity 0.7s var(--ease-out), transform 0.7s var(--ease-out); }
  .reveal.is-visible { opacity: 1; transform: none; }
}

/* ============ Responsive ============ */
@media (max-width: 1180px) {
  .header-cta { display: none; }
  .site-nav ul { gap: var(--space-6); }
}
@media (max-width: 1024px) {
  .steps { grid-template-columns: repeat(2, minmax(0, 1fr)); }
  .concept-feature { grid-template-columns: 1fr; align-items: start; }
  .concept-feature .concept-body { padding-top: var(--space-5); padding-bottom: 0; }
}
@media (max-width: 860px) {
  .site-nav { display: none; }
  .menu-toggle { display: flex; }
  .header-inner { min-height: 68px; gap: var(--space-3); }
  .brand img { height: 30px; }
  .header-actions { gap: var(--space-2); }
  .lang-switch button { padding-inline: var(--space-2); }
  .intro-grid, .about-grid, .contact-grid { grid-template-columns: 1fr; }
  .facts > div { grid-template-columns: 1fr; gap: var(--space-2); }
  .concept-grid { grid-template-columns: 1fr; }
  .hero { min-height: 78vh; }
  .hero h1 { max-width: 12ch; }
  .hero-lead { font-size: var(--text-base); }
  .audience { grid-template-columns: 1fr; }
}
@media (max-width: 560px) {
  .steps { grid-template-columns: 1fr; }
  .hero-actions .btn { width: 100%; }
  .lang-switch button { min-height: 40px; padding-inline: var(--space-2); }
  .contact-details { padding: var(--space-6); }
}
@media (max-width: 380px) {
  .brand img { height: 26px; }
  .lang-switch button { padding-inline: 6px; }
}