/* ============================================================
   VolkTek Systems — site styles
   ============================================================ */

:root {
  --bg: #0f1216;
  --bg-alt: #151a20;
  --surface: #1b2129;
  --surface-2: #222a34;
  --border: #2c3542;
  --text: #e8ecf1;
  --text-muted: #9aa5b4;
  --accent: #ff7a1a;
  --accent-hover: #ff8f42;
  --accent-ink: #0f1216;
  --steel: #6f8196;
  --radius: 10px;
  --shadow: 0 10px 30px rgba(0, 0, 0, 0.35);
  --font-head: "Barlow", "Segoe UI", Arial, sans-serif;
  --font-body: "Inter", "Segoe UI", Arial, sans-serif;
  --container: 1160px;
}

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

html { scroll-behavior: smooth; }

body {
  margin: 0;
  font-family: var(--font-body);
  font-size: 16px;
  line-height: 1.6;
  color: var(--text);
  background: var(--bg);
  -webkit-font-smoothing: antialiased;
}

img, svg { max-width: 100%; display: block; }

a { color: var(--accent); text-decoration: none; }
a:hover { color: var(--accent-hover); }

h1, h2, h3, h4 {
  font-family: var(--font-head);
  line-height: 1.15;
  margin: 0 0 0.5em;
  letter-spacing: -0.01em;
}
h1 { font-size: clamp(2.1rem, 5vw, 3.5rem); font-weight: 800; }
h2 { font-size: clamp(1.7rem, 3.4vw, 2.5rem); font-weight: 700; }
h3 { font-size: 1.2rem; font-weight: 700; }
p  { margin: 0 0 1em; }

.container {
  width: 100%;
  max-width: var(--container);
  margin: 0 auto;
  padding: 0 20px;
}
.container.narrow { max-width: 820px; }

.skip-link {
  position: absolute; left: -9999px; top: 0;
  background: var(--accent); color: var(--accent-ink);
  padding: 8px 14px; z-index: 1000; font-weight: 600;
}
.skip-link:focus { left: 8px; top: 8px; }

/* ---------- Buttons ---------- */
.btn {
  display: inline-flex; align-items: center; justify-content: center;
  padding: 13px 24px;
  border-radius: 6px;
  font-family: var(--font-head);
  font-weight: 700; font-size: 1rem;
  letter-spacing: 0.02em;
  text-transform: uppercase;
  border: 2px solid transparent;
  cursor: pointer;
  transition: background .15s, color .15s, border-color .15s, transform .15s;
}
.btn:active { transform: translateY(1px); }
.btn-primary { background: var(--accent); color: var(--accent-ink); border-color: var(--accent); }
.btn-primary:hover { background: var(--accent-hover); border-color: var(--accent-hover); color: var(--accent-ink); }
.btn-ghost { background: transparent; color: var(--text); border-color: var(--border); }
.btn-ghost:hover { border-color: var(--text); color: var(--text); }
.btn-sm { padding: 9px 16px; font-size: 0.85rem; }

/* ---------- Header / Nav ---------- */
.site-header {
  position: sticky; top: 0; z-index: 100;
  background: rgba(15, 18, 22, 0.88);
  backdrop-filter: blur(10px);
  border-bottom: 1px solid var(--border);
}
.nav-wrap {
  display: flex; align-items: center; justify-content: space-between;
  height: 68px;
}
.brand {
  display: inline-flex; align-items: center; gap: 10px;
  color: var(--text);
  font-family: var(--font-head);
  font-weight: 800; font-size: 1.25rem;
  letter-spacing: 0.01em;
}
.brand:hover { color: var(--text); }
.brand-mark { width: 34px; height: 34px; }
.brand-text span { color: var(--steel); font-weight: 600; }

.primary-nav { display: flex; align-items: center; gap: 28px; }
.primary-nav a:not(.btn) {
  color: var(--text-muted); font-weight: 500; font-size: 0.95rem;
}
.primary-nav a:not(.btn):hover { color: var(--text); }

.nav-toggle {
  display: none;
  background: none; border: 0; padding: 8px; cursor: pointer;
  flex-direction: column; gap: 5px;
}
.nav-toggle span {
  display: block; width: 24px; height: 2px; background: var(--text);
  transition: transform .2s, opacity .2s;
}
.nav-toggle[aria-expanded="true"] span:nth-child(1) { transform: translateY(7px) rotate(45deg); }
.nav-toggle[aria-expanded="true"] span:nth-child(2) { opacity: 0; }
.nav-toggle[aria-expanded="true"] span:nth-child(3) { transform: translateY(-7px) rotate(-45deg); }

/* ---------- Hero ---------- */
.hero {
  position: relative;
  padding: 110px 0 90px;
  overflow: hidden;
  border-bottom: 1px solid var(--border);
}
.hero-bg {
  position: absolute; inset: 0; z-index: 0;
  background:
    radial-gradient(ellipse 60% 50% at 80% 10%, rgba(255, 122, 26, 0.16), transparent 60%),
    radial-gradient(ellipse 50% 60% at 10% 90%, rgba(111, 129, 150, 0.14), transparent 60%),
    repeating-linear-gradient(0deg, transparent 0 39px, rgba(255,255,255,0.025) 39px 40px),
    repeating-linear-gradient(90deg, transparent 0 39px, rgba(255,255,255,0.025) 39px 40px);
}
.hero-inner { position: relative; z-index: 1; max-width: 860px; }
.eyebrow {
  font-family: var(--font-head);
  text-transform: uppercase; letter-spacing: 0.14em;
  font-weight: 700; font-size: 0.8rem;
  color: var(--accent);
  margin-bottom: 14px;
}
.hero h1 em { font-style: normal; color: var(--accent); }
.lead { font-size: 1.15rem; color: var(--text-muted); max-width: 640px; margin-bottom: 30px; }
.hero-actions { display: flex; flex-wrap: wrap; gap: 12px; margin-bottom: 36px; }
.hero-badges {
  list-style: none; padding: 0; margin: 0;
  display: flex; flex-wrap: wrap; gap: 10px 22px;
  font-size: 0.9rem; color: var(--text-muted);
}
.hero-badges li { display: flex; align-items: center; gap: 8px; }
.hero-badges li::before {
  content: ""; width: 8px; height: 8px; border-radius: 2px; background: var(--accent);
}
.br-desktop { display: none; }

/* ---------- Trust bar ---------- */
.trust-bar { background: var(--bg-alt); border-bottom: 1px solid var(--border); }
.trust-grid {
  display: grid; grid-template-columns: repeat(4, 1fr);
  gap: 0;
}
.trust-grid > div {
  padding: 26px 20px;
  border-right: 1px solid var(--border);
}
.trust-grid > div:last-child { border-right: 0; }
.trust-grid strong {
  display: block;
  font-family: var(--font-head); font-size: 1.6rem; font-weight: 800;
  color: var(--text); line-height: 1.1; margin-bottom: 4px;
}
.trust-grid span { font-size: 0.9rem; color: var(--text-muted); }

/* ---------- Sections ---------- */
.section { padding: 90px 0; }
.section-alt { background: var(--bg-alt); border-top: 1px solid var(--border); border-bottom: 1px solid var(--border); }
.section-head { max-width: 720px; margin-bottom: 48px; }
.section-head .sub { color: var(--text-muted); font-size: 1.05rem; }

/* ---------- Cards ---------- */
.card-grid {
  display: grid; grid-template-columns: repeat(3, 1fr); gap: 22px;
}
.card {
  background: var(--surface);
  border: 1px solid var(--border);
  border-radius: var(--radius);
  padding: 28px;
  transition: border-color .2s, transform .2s;
}
.card:hover { border-color: var(--steel); transform: translateY(-3px); }
.card-icon {
  width: 46px; height: 46px; border-radius: 8px;
  background: rgba(255, 122, 26, 0.12); color: var(--accent);
  display: grid; place-items: center; margin-bottom: 18px;
}
.card-icon svg { width: 26px; height: 26px; }
.card p { color: var(--text-muted); font-size: 0.95rem; }
.card ul { margin: 14px 0 0; padding: 0; list-style: none; font-size: 0.9rem; }
.card ul li { padding: 5px 0 5px 18px; position: relative; color: var(--text); }
.card ul li::before {
  content: ""; position: absolute; left: 0; top: 13px;
  width: 8px; height: 2px; background: var(--accent);
}

/* ---------- Process steps ---------- */
.steps {
  list-style: none; padding: 0; margin: 0;
  display: grid; grid-template-columns: repeat(4, 1fr); gap: 22px;
  counter-reset: step;
}
.steps li {
  position: relative;
  padding: 28px 24px 24px;
  background: var(--surface);
  border: 1px solid var(--border);
  border-radius: var(--radius);
}
.step-num {
  display: inline-block;
  font-family: var(--font-head); font-weight: 800; font-size: 2rem;
  color: var(--accent); line-height: 1; margin-bottom: 14px;
}
.steps p { color: var(--text-muted); font-size: 0.95rem; margin: 0; }

/* ---------- Split layout (compliance, contact) ---------- */
.split {
  display: grid; grid-template-columns: 1.1fr 1fr; gap: 60px; align-items: center;
}
.split-text > p { color: var(--text-muted); }
.check-list { list-style: none; padding: 0; margin: 24px 0; }
.check-list li {
  position: relative; padding: 10px 0 10px 32px;
  border-bottom: 1px solid var(--border);
  font-size: 0.95rem; color: var(--text-muted);
}
.check-list li strong { color: var(--text); }
.check-list li::before {
  content: ""; position: absolute; left: 4px; top: 16px;
  width: 12px; height: 7px;
  border-left: 2.5px solid var(--accent); border-bottom: 2.5px solid var(--accent);
  transform: rotate(-45deg);
}
.note { font-size: 0.9rem; color: var(--steel); }

/* ---------- Certificate mock ---------- */
.cert-mock {
  position: relative;
  background: #f4f1ea;
  color: #1d1f22;
  border-radius: 6px;
  padding: 28px 28px 32px;
  box-shadow: var(--shadow);
  font-family: var(--font-body);
  transform: rotate(-1.5deg);
  overflow: hidden;
}
.cert-head {
  display: flex; justify-content: space-between; align-items: baseline;
  font-family: var(--font-head); font-weight: 800; font-size: 0.85rem;
  letter-spacing: 0.1em;
  border-bottom: 2px solid #1d1f22;
  padding-bottom: 10px; margin-bottom: 18px;
}
.cert-id { font-family: monospace; font-size: 0.8rem; letter-spacing: 0; font-weight: 500; }
.cert-mock dl { margin: 0 0 18px; }
.cert-mock dl div { display: flex; gap: 12px; padding: 5px 0; border-bottom: 1px dashed #c8c2b5; font-size: 0.88rem; }
.cert-mock dt { width: 110px; flex: none; font-weight: 600; color: #4a4e55; }
.cert-mock dd { margin: 0; }
.cert-serials {
  display: flex; flex-wrap: wrap; gap: 6px;
  font-family: monospace; font-size: 0.72rem;
}
.cert-serials span { background: #e7e2d8; padding: 3px 7px; border-radius: 3px; }
.cert-stamp {
  position: absolute; right: 18px; bottom: 18px;
  font-family: var(--font-head); font-weight: 800; font-size: 1.6rem;
  letter-spacing: 0.15em;
  color: #c62a1a;
  border: 3px solid #c62a1a;
  padding: 4px 12px;
  transform: rotate(-12deg);
  opacity: 0.85;
}

/* ---------- Industries ---------- */
.industry-grid {
  display: grid; grid-template-columns: repeat(3, 1fr); gap: 2px;
  background: var(--border);
  border: 1px solid var(--border);
  border-radius: var(--radius); overflow: hidden;
}
.industry { background: var(--bg-alt); padding: 26px; }
.industry h3 { font-size: 1.05rem; margin-bottom: 6px; }
.industry p { margin: 0; color: var(--text-muted); font-size: 0.92rem; }

/* ---------- Why ---------- */
.why-grid { display: grid; grid-template-columns: repeat(2, 1fr); gap: 22px; }
.why {
  padding: 26px 28px;
  border-left: 3px solid var(--accent);
  background: var(--surface);
  border-radius: 0 var(--radius) var(--radius) 0;
}
.why h3 { font-size: 1.15rem; }
.why p { margin: 0; color: var(--text-muted); font-size: 0.95rem; }

/* ---------- FAQ ---------- */
.faq-list details {
  border: 1px solid var(--border);
  border-radius: 8px;
  background: var(--surface);
  margin-bottom: 10px;
}
.faq-list summary {
  cursor: pointer; list-style: none;
  padding: 18px 50px 18px 22px;
  font-family: var(--font-head); font-weight: 700; font-size: 1.05rem;
  position: relative;
}
.faq-list summary::-webkit-details-marker { display: none; }
.faq-list summary::after {
  content: "+"; position: absolute; right: 20px; top: 50%;
  transform: translateY(-50%);
  font-size: 1.4rem; color: var(--accent); font-weight: 500;
  transition: transform .2s;
}
.faq-list details[open] summary::after { transform: translateY(-50%) rotate(45deg); }
.faq-list details p {
  margin: 0; padding: 0 22px 20px;
  color: var(--text-muted); font-size: 0.95rem;
}

/* ---------- Contact ---------- */
.contact { border-top: 1px solid var(--border); }
.contact-details { list-style: none; padding: 0; margin: 28px 0 0; }
.contact-details li { display: flex; gap: 16px; padding: 10px 0; border-bottom: 1px solid var(--border); }
.contact-details .label {
  width: 70px; flex: none;
  font-family: var(--font-head); font-weight: 700; font-size: 0.8rem;
  letter-spacing: 0.1em; text-transform: uppercase; color: var(--steel);
  padding-top: 3px;
}
.contact-details a { color: var(--text); font-weight: 500; }
.contact-details a:hover { color: var(--accent); }

.quote-form {
  background: var(--surface);
  border: 1px solid var(--border);
  border-radius: var(--radius);
  padding: 30px;
}
.form-row { display: grid; grid-template-columns: 1fr 1fr; gap: 16px; }
.quote-form label {
  display: block; margin-bottom: 16px;
  font-size: 0.85rem; font-weight: 600; color: var(--text-muted);
}
.quote-form input, .quote-form select, .quote-form textarea {
  display: block; width: 100%; margin-top: 6px;
  padding: 11px 13px;
  background: var(--bg);
  border: 1px solid var(--border);
  border-radius: 6px;
  color: var(--text);
  font: inherit; font-size: 0.95rem;
}
.quote-form input:focus, .quote-form select:focus, .quote-form textarea:focus {
  outline: none; border-color: var(--accent);
  box-shadow: 0 0 0 3px rgba(255, 122, 26, 0.2);
}
.quote-form textarea { resize: vertical; }
.quote-form .btn { width: 100%; margin-top: 4px; }
.hp { position: absolute; left: -9999px; }
.form-note { margin: 12px 0 0; font-size: 0.8rem; color: var(--steel); text-align: center; }
.form-status { margin: 10px 0 0; font-size: 0.9rem; text-align: center; min-height: 1.4em; }
.form-status.ok { color: #6ddc8a; }
.form-status.err { color: #ff7d6b; }

/* ---------- Footer ---------- */
.site-footer {
  background: #0a0d10;
  border-top: 1px solid var(--border);
  padding: 50px 0 40px;
  font-size: 0.9rem;
  color: var(--text-muted);
}
.footer-grid {
  display: grid; grid-template-columns: 1.4fr 1fr 1fr; gap: 40px; align-items: start;
}
.footer-tag { margin-top: 12px; }
.site-footer nav { display: flex; flex-direction: column; gap: 8px; }
.site-footer nav a { color: var(--text-muted); }
.site-footer nav a:hover { color: var(--text); }
.footer-legal { text-align: right; }
.footer-legal p { margin: 0 0 6px; }
.footer-legal a { color: var(--text-muted); }
.footer-legal a:hover { color: var(--text); }

/* ---------- Legal page ---------- */
.legal { padding: 70px 0; max-width: 760px; }
.legal h1 { font-size: 2.2rem; }
.legal h2 { font-size: 1.35rem; margin-top: 2em; }
.legal p, .legal li { color: var(--text-muted); }
.legal .updated { font-size: 0.85rem; color: var(--steel); }

/* ---------- Responsive ---------- */
@media (min-width: 900px) {
  .br-desktop { display: inline; }
}

@media (max-width: 1000px) {
  .card-grid, .industry-grid { grid-template-columns: repeat(2, 1fr); }
  .steps { grid-template-columns: repeat(2, 1fr); }
  .trust-grid { grid-template-columns: repeat(2, 1fr); }
  .trust-grid > div:nth-child(2) { border-right: 0; }
  .trust-grid > div:nth-child(-n+2) { border-bottom: 1px solid var(--border); }
  .split { grid-template-columns: 1fr; gap: 40px; }
  .cert-mock { transform: none; }
}

@media (max-width: 760px) {
  .nav-toggle { display: flex; }
  .primary-nav {
    display: none;
    position: absolute; left: 0; right: 0; top: 68px;
    flex-direction: column; align-items: stretch; gap: 0;
    background: var(--bg-alt);
    border-bottom: 1px solid var(--border);
    padding: 10px 20px 18px;
  }
  .primary-nav.open { display: flex; }
  .primary-nav a:not(.btn) { padding: 12px 0; border-bottom: 1px solid var(--border); font-size: 1.05rem; }
  .primary-nav .btn { margin-top: 14px; }

  .hero { padding: 70px 0 60px; }
  .section { padding: 64px 0; }
  .card-grid, .industry-grid, .steps, .why-grid { grid-template-columns: 1fr; }
  .trust-grid { grid-template-columns: 1fr; }
  .trust-grid > div { border-right: 0; border-bottom: 1px solid var(--border); }
  .trust-grid > div:last-child { border-bottom: 0; }
  .form-row { grid-template-columns: 1fr; gap: 0; }
  .footer-grid { grid-template-columns: 1fr; gap: 28px; }
  .footer-legal { text-align: left; }
  .quote-form { padding: 22px; }
}