/* ============================================================
   OostForce — styles
   Palette: charcoal ink + lime accent (from brand logo & imagery)
   ============================================================ */
:root {
  --ink: #2a2a2a;
  --ink-soft: #55575a;
  --ink-faint: #8a8d91;
  --lime: #d7e34c;
  --lime-strong: #c3d02f;
  --lime-tint: #f4f7db;
  --paper: #ffffff;
  --paper-2: #f7f8f2;
  --line: #e7e8e2;
  --radius: 18px;
  --radius-sm: 12px;
  --shadow-sm: 0 2px 10px rgba(26, 27, 24, 0.06);
  --shadow-md: 0 20px 50px -20px rgba(26, 27, 24, 0.28);
  --maxw: 1160px;
  --ease: cubic-bezier(0.16, 1, 0.3, 1);
}

* { box-sizing: border-box; }

html { scroll-behavior: smooth; scroll-padding-top: 90px; }

body {
  margin: 0;
  font-family: "Inter", system-ui, -apple-system, sans-serif;
  color: var(--ink);
  background: var(--paper);
  line-height: 1.6;
  -webkit-font-smoothing: antialiased;
  text-rendering: optimizeLegibility;
}

h1, h2, h3, h4 {
  font-family: "Space Grotesk", "Inter", sans-serif;
  line-height: 1.1;
  letter-spacing: -0.01em;
  margin: 0;
}

p { margin: 0; }
img { max-width: 100%; display: block; }
a { color: inherit; text-decoration: none; }

.container { width: 100%; max-width: var(--maxw); margin-inline: auto; padding-inline: 24px; }

.skip-link {
  position: absolute; left: -999px; top: 0; z-index: 999;
  background: var(--ink); color: #fff; padding: 10px 16px; border-radius: 0 0 8px 0;
}
.skip-link:focus { left: 0; }

/* ---------- Buttons ---------- */
.btn {
  display: inline-flex; align-items: center; justify-content: center; gap: 8px;
  font-weight: 600; font-size: 0.95rem; padding: 12px 22px; border-radius: 999px;
  border: 1.5px solid transparent; cursor: pointer; transition: transform .25s var(--ease), background .2s, box-shadow .25s, color .2s;
  white-space: nowrap;
}
.btn-lg { padding: 15px 30px; font-size: 1rem; }
.btn-sm { padding: 9px 16px; font-size: 0.85rem; }
.btn-primary { background: var(--lime); color: var(--ink); box-shadow: var(--shadow-sm); }
.btn-primary:hover { background: var(--lime-strong); transform: translateY(-2px); box-shadow: var(--shadow-md); }
.btn-ghost { background: transparent; color: var(--ink); border-color: var(--ink); }
.btn-ghost:hover { background: var(--ink); color: #fff; transform: translateY(-2px); }

/* ---------- Header ---------- */
.site-header {
  position: sticky; top: 0; z-index: 100;
  background: rgba(255, 255, 255, 0.82);
  backdrop-filter: saturate(180%) blur(14px);
  border-bottom: 1px solid var(--line);
}
.header-inner { display: flex; align-items: center; gap: 24px; height: 74px; }
.brand-logo { height: 46px; width: auto; }
.main-nav { display: flex; gap: 30px; margin-left: auto; }
.main-nav a { font-weight: 500; color: var(--ink-soft); position: relative; padding: 4px 0; }
.main-nav a::after {
  content: ""; position: absolute; left: 0; bottom: -2px; height: 2px; width: 0;
  background: var(--lime-strong); transition: width .3s var(--ease);
}
.main-nav a:hover { color: var(--ink); }
.main-nav a:hover::after { width: 100%; }

.header-actions { display: flex; align-items: center; gap: 16px; }
.lang-toggle { display: flex; align-items: center; gap: 6px; color: var(--ink-faint); font-size: 0.85rem; font-weight: 600; }
.lang-btn { background: none; border: none; cursor: pointer; color: var(--ink-faint); font: inherit; padding: 2px 4px; border-radius: 6px; }
.lang-btn.is-active { color: var(--ink); background: var(--lime-tint); }

.nav-toggle { display: none; flex-direction: column; gap: 5px; background: none; border: none; cursor: pointer; padding: 8px; }
.nav-toggle span { width: 24px; height: 2px; background: var(--ink); border-radius: 2px; transition: .3s var(--ease); }

/* ---------- Hero ---------- */
.hero { padding: 68px 0 40px; overflow: hidden; }
.hero-grid { display: grid; grid-template-columns: 1.05fr 1fr; gap: 48px; align-items: center; }
.eyebrow {
  display: inline-block; font-size: 0.82rem; font-weight: 600; letter-spacing: 0.04em;
  text-transform: uppercase; color: var(--ink-soft);
  background: var(--lime-tint); padding: 7px 14px; border-radius: 999px; margin-bottom: 22px;
}
.hero h1 { font-size: clamp(2.3rem, 5vw, 3.6rem); margin-bottom: 20px; max-width: 15ch; }
.hero .lead { font-size: 1.12rem; color: var(--ink-soft); max-width: 52ch; margin-bottom: 30px; }
.hero-cta { display: flex; gap: 14px; flex-wrap: wrap; margin-bottom: 30px; }
.trust-chips { display: flex; flex-wrap: wrap; gap: 10px 20px; list-style: none; padding: 0; margin: 0; }
.trust-chips li { position: relative; padding-left: 24px; font-size: 0.92rem; font-weight: 500; color: var(--ink-soft); }
.trust-chips li::before {
  content: ""; position: absolute; left: 0; top: 50%; transform: translateY(-50%);
  width: 16px; height: 16px; border-radius: 50%; background: var(--lime);
  box-shadow: inset 0 0 0 4px var(--lime-tint);
}
.hero-visual img {
  width: 100%; height: auto;
  filter: drop-shadow(0 30px 45px rgba(26,27,24,0.14));
  animation: floatIn 1s var(--ease) both;
}
@keyframes floatIn { from { opacity: 0; transform: translateY(24px) scale(.98); } to { opacity: 1; transform: none; } }

/* ---------- Section scaffolding ---------- */
.section { padding: 88px 0; }
.section-alt { background: var(--paper-2); }
.section-head { max-width: 760px; margin-bottom: 52px; }
.section-head.center { margin-inline: auto; text-align: center; }
.kicker {
  display: inline-block; font-size: 0.8rem; font-weight: 700; letter-spacing: 0.12em;
  text-transform: uppercase; color: var(--lime-strong); margin-bottom: 14px;
}
.section-head h2, .split-copy h2, .faq-aside h2, .contact-copy h2 { font-size: clamp(1.7rem, 3.4vw, 2.5rem); }
.section-sub { margin-top: 16px; font-size: 1.08rem; color: var(--ink-soft); }
.on-dark .kicker { color: var(--lime); }
.on-dark .section-sub { color: rgba(255,255,255,0.75); }

/* ---------- Feature cards ---------- */
.feature-grid { display: grid; grid-template-columns: repeat(4, 1fr); gap: 20px; }
.feature-card {
  background: var(--paper); border: 1px solid var(--line); border-radius: var(--radius);
  padding: 28px 24px; transition: transform .3s var(--ease), box-shadow .3s, border-color .3s;
}
.feature-card:hover { transform: translateY(-6px); box-shadow: var(--shadow-md); border-color: transparent; }
.feature-check {
  width: 42px; height: 42px; padding: 9px; margin-bottom: 18px;
  background: var(--lime-tint); border-radius: 12px;
}
.feature-card h3 { font-size: 1.15rem; margin-bottom: 10px; }
.feature-card p { color: var(--ink-soft); font-size: 0.96rem; }

/* ---------- Split (connecting) ---------- */
.split { display: grid; grid-template-columns: 1fr 1fr; gap: 56px; align-items: center; }
.split-visual img { width: 100%; height: auto; }
.split-copy h2 { margin-bottom: 18px; }
.split-copy > p { color: var(--ink-soft); font-size: 1.05rem; }
.mini-stats { display: flex; gap: 32px; margin: 30px 0; flex-wrap: wrap; }
.mini-stat strong { display: block; font-family: "Space Grotesk"; font-size: 2.2rem; color: var(--ink); line-height: 1; }
.mini-stat span { font-size: 0.85rem; color: var(--ink-faint); }
.callout {
  display: flex; gap: 14px; align-items: flex-start; background: var(--lime-tint);
  border-radius: var(--radius-sm); padding: 18px 20px;
}
.callout img { width: 26px; height: 26px; flex-shrink: 0; margin-top: 2px; }
.callout p { font-size: 0.98rem; font-weight: 500; }

/* ---------- Partners ---------- */
.logo-row {
  display: flex; flex-wrap: wrap; align-items: center; justify-content: center;
  gap: 40px 56px; padding: 20px 0;
}
.logo-row img {
  height: 42px; width: auto; object-fit: contain;
  filter: grayscale(1); opacity: 0.6; transition: filter .3s, opacity .3s, transform .3s var(--ease);
}
.logo-row img:hover { filter: grayscale(0); opacity: 1; transform: scale(1.06); }

/* ---------- Specialists (dark) ---------- */
.section-dark { background: var(--ink); color: #fff; }
.section-dark h2 { color: #fff; }
.trade-grid {
  list-style: none; padding: 0; margin: 0;
  display: grid; grid-template-columns: repeat(3, 1fr); gap: 14px;
}
.trade-grid li {
  padding: 20px 22px; border: 1px solid rgba(255,255,255,0.12); border-radius: var(--radius-sm);
  font-family: "Space Grotesk"; font-weight: 500; font-size: 1.05rem;
  display: flex; align-items: center; gap: 12px;
  transition: background .3s, border-color .3s, transform .3s var(--ease);
}
.trade-grid li::before { content: ""; width: 8px; height: 8px; border-radius: 50%; background: var(--lime); flex-shrink: 0; }
.trade-grid li:hover { background: rgba(215,227,76,0.08); border-color: var(--lime); transform: translateX(4px); }

/* ---------- FAQ ---------- */
.faq-layout { display: grid; grid-template-columns: 0.85fr 1.15fr; gap: 56px; align-items: start; }
.faq-aside { position: sticky; top: 100px; }
.faq-aside h2 { margin: 6px 0 16px; }
.faq-aside p { color: var(--ink-soft); margin-bottom: 22px; }
.faq-list { display: flex; flex-direction: column; gap: 12px; }
.faq-item {
  border: 1px solid var(--line); border-radius: var(--radius-sm); background: var(--paper);
  transition: border-color .3s, box-shadow .3s;
}
.faq-item[open] { border-color: var(--lime-strong); box-shadow: var(--shadow-sm); }
.faq-item summary {
  list-style: none; cursor: pointer; display: flex; justify-content: space-between; align-items: center;
  gap: 18px; padding: 20px 22px; font-family: "Space Grotesk"; font-weight: 600; font-size: 1.05rem;
}
.faq-item summary::-webkit-details-marker { display: none; }
.faq-icon { position: relative; width: 18px; height: 18px; flex-shrink: 0; }
.faq-icon::before, .faq-icon::after {
  content: ""; position: absolute; background: var(--ink); border-radius: 2px; transition: transform .3s var(--ease), opacity .3s;
}
.faq-icon::before { top: 8px; left: 0; width: 18px; height: 2px; }
.faq-icon::after { left: 8px; top: 0; width: 2px; height: 18px; }
.faq-item[open] .faq-icon::after { transform: rotate(90deg); opacity: 0; }
.faq-body { padding: 0 22px 22px; }
.faq-body p { color: var(--ink-soft); }

/* ---------- Contact ---------- */
.contact-band { background: var(--paper-2); }
.contact-grid { display: grid; grid-template-columns: 1fr 1fr; gap: 56px; align-items: center; }
.stano-line {
  font-family: "Space Grotesk"; font-size: 1.25rem; font-weight: 500; line-height: 1.4;
  color: var(--ink); margin: 18px 0 28px; padding-left: 18px; border-left: 4px solid var(--lime);
}
.contact-methods { display: flex; gap: 16px; flex-wrap: wrap; }
.contact-method {
  flex: 1 1 190px; background: var(--paper); border: 1px solid var(--line); border-radius: var(--radius-sm);
  padding: 16px 20px; transition: border-color .3s, transform .3s var(--ease), box-shadow .3s;
}
.contact-method:hover { border-color: var(--lime-strong); transform: translateY(-3px); box-shadow: var(--shadow-sm); }
.cm-label { display: block; font-size: 0.8rem; color: var(--ink-faint); }
.cm-value { display: block; font-family: "Space Grotesk"; font-weight: 600; font-size: 1.1rem; margin-top: 2px; }

.contact-form {
  background: var(--paper); border: 1px solid var(--line); border-radius: var(--radius);
  padding: 30px; display: flex; flex-direction: column; gap: 16px; box-shadow: var(--shadow-sm);
}
.contact-form label { display: flex; flex-direction: column; gap: 6px; font-size: 0.88rem; font-weight: 600; color: var(--ink-soft); }
.contact-form input, .contact-form textarea {
  font: inherit; padding: 12px 14px; border: 1px solid var(--line); border-radius: 10px;
  background: var(--paper-2); color: var(--ink); resize: vertical; transition: border-color .2s, background .2s;
}
.contact-form input:focus, .contact-form textarea:focus { outline: none; border-color: var(--lime-strong); background: #fff; }
.form-note { font-size: 0.85rem; color: var(--ink-faint); text-align: center; }

/* ---------- Footer ---------- */
.site-footer { background: var(--ink); color: rgba(255,255,255,0.72); padding-top: 64px; }
.footer-top {
  display: grid; grid-template-columns: 2fr 1fr 1fr 1.4fr; gap: 40px;
  padding-bottom: 48px; border-bottom: 1px solid rgba(255,255,255,0.12);
}
.footer-logo { height: 52px; width: auto; margin-bottom: 18px; filter: brightness(0) invert(1); }
.footer-brand p { font-size: 0.95rem; max-width: 42ch; margin-bottom: 18px; }
.footer-badges { display: flex; flex-wrap: wrap; gap: 8px; }
.footer-badges span {
  font-size: 0.75rem; font-weight: 600; color: #fff; padding: 5px 12px;
  border: 1px solid rgba(255,255,255,0.2); border-radius: 999px;
}
.footer-col { display: flex; flex-direction: column; gap: 12px; }
.footer-col h4 { color: #fff; font-size: 0.85rem; letter-spacing: 0.08em; text-transform: uppercase; margin-bottom: 6px; }
.footer-col a { color: rgba(255,255,255,0.72); font-size: 0.95rem; transition: color .2s; width: fit-content; }
.footer-col a:hover { color: var(--lime); }
.footer-contact .footer-company { font-size: 0.88rem; color: rgba(255,255,255,0.5); margin-top: 4px; }
.footer-contact .btn { margin-top: 10px; }
.footer-bottom {
  display: flex; justify-content: space-between; align-items: center; gap: 16px;
  padding: 22px 0; font-size: 0.85rem; flex-wrap: wrap;
}
.footer-route { font-family: "Space Grotesk"; font-weight: 600; color: var(--lime); letter-spacing: 0.04em; }

/* ---------- Reveal on scroll ---------- */
.reveal { opacity: 0; transform: translateY(26px); transition: opacity .7s var(--ease), transform .7s var(--ease); }
.reveal.in { opacity: 1; transform: none; }

/* ---------- Responsive ---------- */
@media (max-width: 960px) {
  .feature-grid { grid-template-columns: repeat(2, 1fr); }
  .footer-top { grid-template-columns: 1fr 1fr; }
}
@media (max-width: 860px) {
  .main-nav, .header-actions .btn-primary { display: none; }
  .nav-toggle { display: flex; }
  .site-header.nav-open .main-nav {
    display: flex; flex-direction: column; position: absolute; top: 74px; left: 0; right: 0;
    background: #fff; padding: 20px 24px; gap: 18px; border-bottom: 1px solid var(--line); box-shadow: var(--shadow-md);
  }
  .hero-grid, .split, .faq-layout, .contact-grid { grid-template-columns: 1fr; }
  .hero-visual { order: -1; max-width: 480px; margin-inline: auto; }
  .split-visual { max-width: 480px; margin-inline: auto; }
  .faq-aside { position: static; }
  .trade-grid { grid-template-columns: repeat(2, 1fr); }
}
@media (max-width: 560px) {
  .section { padding: 60px 0; }
  .feature-grid, .trade-grid { grid-template-columns: 1fr; }
  .footer-top { grid-template-columns: 1fr; }
  .nav-toggle.is-open span:nth-child(1) { transform: translateY(7px) rotate(45deg); }
  .nav-toggle.is-open span:nth-child(2) { opacity: 0; }
  .nav-toggle.is-open span:nth-child(3) { transform: translateY(-7px) rotate(-45deg); }
}

@media (prefers-reduced-motion: reduce) {
  * { animation: none !important; transition: none !important; }
  html { scroll-behavior: auto; }
  .reveal { opacity: 1; transform: none; }
}