/* ============================================================
   VOLT-X — Shared Stylesheet
   Design tokens kept from the approved Stitch system, with
   corrected nav typography scale and real component classes.
   ============================================================ */

:root {
  --voltx-blue-deep: #061226;
  --voltx-blue: #00132f;
  --voltx-surface-container: #0a1f3d;
  --voltx-surface-container-low: #061b39;
  --voltx-surface-container-high: #172a48;
  --voltx-surface-container-highest: #223554;
  --voltx-surface-light: #f4f7fb;
  --voltx-orange: #ff6a1a;
  --voltx-orange-dark: #c44e0f;
  --voltx-cyan: #3fd0ff;
  --voltx-text: #d6e3ff;
  --voltx-text-muted: #9fb3d9;
  --voltx-outline: #2c3f63;

  --font-display: 'Sora', 'Segoe UI', sans-serif;
  --font-body: 'Inter', 'Segoe UI', sans-serif;
  --font-mono: 'IBM Plex Mono', monospace;

  --container-max: 1280px;
  --gutter: 24px;
}

* { box-sizing: border-box; }
html { scroll-behavior: smooth; }
body {
  margin: 0;
  background: var(--voltx-blue);
  color: var(--voltx-text);
  font-family: var(--font-body);
  line-height: 1.5;
  -webkit-font-smoothing: antialiased;
}
img { max-width: 100%; display: block; }
a { color: inherit; text-decoration: none; }
.container {
  max-width: var(--container-max);
  margin: 0 auto;
  padding: 0 var(--gutter);
}

/* ---------- Header / Nav ---------- */
.site-header {
  position: sticky;
  top: 0;
  z-index: 100;
  background: rgba(0, 19, 47, 0.92);
  backdrop-filter: blur(16px);
  border-bottom: 1px solid rgba(255, 106, 26, 0.25);
}
.nav-row {
  display: flex;
  align-items: center;
  justify-content: space-between;
  height: 72px;
  gap: 24px;
}
.brand {
  display: flex;
  align-items: center;
  gap: 10px;
  flex-shrink: 0;
}
.brand img { height: 28px; width: auto; }
.brand-word {
  font-family: var(--font-display);
  font-weight: 700;
  font-size: 20px;
  letter-spacing: -0.01em;
  color: #fff;
}
.brand-word span { color: var(--voltx-orange); }

.main-nav { display: flex; align-items: center; gap: 28px; }
.main-nav a {
  font-family: var(--font-body);
  font-size: 14px;
  font-weight: 500;
  color: var(--voltx-text);
  white-space: nowrap;
  transition: color 0.2s ease;
  position: relative;
  padding: 4px 0;
}
.main-nav a:hover { color: var(--voltx-cyan); }
.main-nav a.active { color: var(--voltx-orange); }
.main-nav a.active::after {
  content: '';
  position: absolute;
  left: 0; right: 0; bottom: -2px;
  height: 2px;
  background: var(--voltx-orange);
}

.nav-actions { display: flex; align-items: center; gap: 14px; flex-shrink: 0; }
.lang-switch {
  display: flex;
  align-items: center;
  gap: 4px;
  font-family: var(--font-mono);
  font-size: 12px;
  color: var(--voltx-text);
  background: none;
  border: 1px solid var(--voltx-outline);
  border-radius: 4px;
  padding: 6px 10px;
  cursor: pointer;
  transition: border-color 0.2s ease, color 0.2s ease;
}
.lang-switch:hover { border-color: var(--voltx-cyan); color: var(--voltx-cyan); }

.btn {
  display: inline-flex;
  align-items: center;
  gap: 6px;
  font-family: var(--font-body);
  font-size: 14px;
  font-weight: 600;
  padding: 10px 20px;
  border-radius: 4px;
  border: 1px solid transparent;
  cursor: pointer;
  transition: all 0.2s ease;
}
.btn-primary {
  background: var(--voltx-orange);
  color: #fff;
  box-shadow: 0 0 0 rgba(255,106,26,0);
}
.btn-primary:hover { background: var(--voltx-orange-dark); box-shadow: 0 0 16px rgba(255,106,26,0.35); }
.btn-outline {
  background: transparent;
  border-color: var(--voltx-cyan);
  color: var(--voltx-text);
}
.btn-outline:hover { background: rgba(63,208,255,0.1); }
.btn-outline-orange {
  background: transparent;
  border-color: var(--voltx-orange);
  color: var(--voltx-orange);
}
.btn-outline-orange:hover { background: rgba(255,106,26,0.1); }
.btn-block { width: 100%; justify-content: center; }

.mobile-menu-btn { display: none; background: none; border: none; color: #fff; cursor: pointer; padding: 8px; }

@media (max-width: 920px) {
  .main-nav { display: none; }
  .lang-switch span.lang-label { display: none; }
  .mobile-menu-btn { display: flex; }
}

/* Mobile drawer */
.mobile-drawer {
  position: fixed; inset: 0; z-index: 200;
  background: rgba(0,19,47,0.98);
  display: none;
  flex-direction: column;
  padding: 24px;
}
.mobile-drawer.open { display: flex; }
.mobile-drawer-top { display: flex; justify-content: space-between; align-items: center; margin-bottom: 40px; }
.mobile-drawer a {
  font-family: var(--font-display);
  font-size: 24px;
  font-weight: 600;
  padding: 16px 0;
  border-bottom: 1px solid var(--voltx-outline);
  color: #fff;
}
.mobile-drawer .btn { margin-top: 24px; }

/* ---------- Page Hero (sub-pages) ---------- */
.page-hero {
  padding: 64px 0 56px;
  background:
    radial-gradient(ellipse at 75% 0%, rgba(63,208,255,0.10), transparent 55%),
    linear-gradient(160deg, var(--voltx-blue-deep) 0%, var(--voltx-surface-container) 100%),
    url('backgrounds/hero-rail-bg.jpg');
  background-size: auto, auto, cover;
  background-position: center, center, center 35%;
  background-repeat: no-repeat, no-repeat, no-repeat;
  background-blend-mode: normal, normal, normal;
  border-bottom: 1px solid rgba(255,106,26,0.2);
}
@media (max-width: 700px) {
  .page-hero {
    background-position: center, center, center 5%;
  }
}
.eyebrow {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  font-family: var(--font-mono);
  font-size: 12px;
  letter-spacing: 0.12em;
  text-transform: uppercase;
  color: var(--voltx-orange);
  border: 1px solid rgba(255,106,26,0.3);
  padding: 6px 14px;
  border-radius: 4px;
  margin-bottom: 20px;
}
.eyebrow .dot {
  width: 6px; height: 6px; border-radius: 50%;
  background: var(--voltx-cyan);
  box-shadow: 0 0 6px var(--voltx-cyan);
}
h1.page-title {
  font-family: var(--font-display);
  font-size: clamp(32px, 5vw, 48px);
  font-weight: 700;
  letter-spacing: -0.02em;
  color: #fff;
  margin: 0 0 16px;
  max-width: 760px;
}
.page-subtitle {
  font-family: var(--font-body);
  font-size: 18px;
  line-height: 1.6;
  color: var(--voltx-text-muted);
  max-width: 640px;
  margin: 0;
}

/* breadcrumb */
.breadcrumb {
  font-family: var(--font-mono);
  font-size: 12px;
  color: var(--voltx-text-muted);
  margin-bottom: 24px;
}
.breadcrumb a:hover { color: var(--voltx-cyan); }
.breadcrumb .sep { margin: 0 8px; opacity: 0.4; }

/* ---------- Sections ---------- */
section { padding: 80px 0; }
section.tight { padding: 56px 0; }
.section-light { background: var(--voltx-surface-light); color: #0a1f3d; }
.section-deep { background: var(--voltx-blue-deep); }
.section-mid { background: var(--voltx-surface-container); }

.section-head { margin-bottom: 48px; }
.section-head .kicker {
  font-family: var(--font-mono);
  font-size: 12px;
  letter-spacing: 0.12em;
  text-transform: uppercase;
  color: var(--voltx-orange);
  display: block;
  margin-bottom: 12px;
}
.section-head h2 {
  font-family: var(--font-display);
  font-size: clamp(26px, 3.5vw, 36px);
  font-weight: 700;
  margin: 0 0 12px;
  letter-spacing: -0.01em;
}
.section-light .section-head h2 { color: #0a1f3d; }
.section-head p {
  font-size: 17px;
  color: var(--voltx-text-muted);
  max-width: 620px;
  margin: 0;
}
.section-light .section-head p { color: #4a5b7a; }
.divider-bar { width: 64px; height: 3px; background: var(--voltx-orange); margin-top: 16px; }

/* ---------- Cards: products / industries / tiers ---------- */
.grid {
  display: grid;
  gap: 16px;
}
.grid-3 { grid-template-columns: repeat(3, 1fr); }
.grid-2 { grid-template-columns: repeat(2, 1fr); }
.grid-4 { grid-template-columns: repeat(4, 1fr); }
@media (max-width: 920px) {
  .grid-3, .grid-4 { grid-template-columns: repeat(2, 1fr); }
}
@media (max-width: 600px) {
  .grid-2, .grid-3, .grid-4 { grid-template-columns: 1fr; }
}

.card {
  background: var(--voltx-surface-container);
  border: 1px solid transparent;
  border-radius: 4px;
  padding: 28px;
  transition: border-color 0.25s ease, transform 0.25s ease;
}
.card:hover { border-color: rgba(63,208,255,0.4); transform: translateY(-2px); }
.card .card-icon {
  width: 44px; height: 44px;
  display: flex; align-items: center; justify-content: center;
  background: rgba(255,106,26,0.1);
  border-radius: 4px;
  color: var(--voltx-orange);
  margin-bottom: 16px;
  font-family: var(--font-mono);
  font-size: 18px;
  font-weight: 600;
}
.card .card-code {
  font-family: var(--font-mono);
  font-size: 12px;
  color: var(--voltx-text-muted);
  display: block;
  margin-bottom: 6px;
}
.card h3 {
  font-family: var(--font-display);
  font-size: 18px;
  font-weight: 600;
  margin: 0 0 8px;
  color: #fff;
}
.card p { font-size: 14px; color: var(--voltx-text-muted); margin: 0; }
.card a.card-link {
  display: inline-flex; align-items: center; gap: 4px;
  margin-top: 14px;
  font-size: 13px; font-weight: 600;
  color: var(--voltx-cyan);
}

/* Industry photo cards */
.industry-card {
  position: relative;
  overflow: hidden;
  border-radius: 4px;
  min-height: 240px;
  display: flex;
  align-items: flex-end;
  background-size: cover;
  background-position: center;
  background-color: var(--voltx-surface-container);
}
.industry-card::before {
  content: '';
  position: absolute; inset: 0;
  background: linear-gradient(0deg, rgba(0,19,47,0.95) 10%, rgba(0,19,47,0.3) 60%, transparent 100%);
}
.industry-card .industry-label {
  position: relative; z-index: 2;
  padding: 24px;
  width: 100%;
}
.industry-card .industry-tag {
  font-family: var(--font-mono);
  font-size: 11px;
  color: var(--voltx-cyan);
  letter-spacing: 0.08em;
  text-transform: uppercase;
  display: block;
  margin-bottom: 6px;
}
.industry-card h3 { font-family: var(--font-display); font-size: 20px; font-weight: 600; color: #fff; margin: 0; }

/* Distributor tier cards */
.tier-card {
  background: rgba(10,31,61,0.6);
  border: 1px solid var(--voltx-outline);
  border-radius: 4px;
  padding: 32px;
  display: flex;
  flex-direction: column;
}
.tier-card.featured {
  background: var(--voltx-surface-container);
  border-color: var(--voltx-orange);
  position: relative;
}
.tier-card.featured::before {
  content: '';
  position: absolute; top: 0; left: 0; right: 0; height: 3px;
  background: var(--voltx-orange);
}
.tier-badge {
  font-family: var(--font-mono);
  font-size: 11px;
  letter-spacing: 0.08em;
  padding: 4px 10px;
  border-radius: 4px;
  border: 1px solid var(--voltx-cyan);
  color: var(--voltx-cyan);
  display: inline-block;
  margin-bottom: 16px;
  width: fit-content;
}
.tier-badge.orange { border-color: var(--voltx-orange); color: var(--voltx-orange); background: rgba(255,106,26,0.1); }
.tier-card h3 { font-family: var(--font-display); font-size: 24px; font-weight: 700; color: #fff; margin: 0 0 8px; }
.tier-card .tier-desc { font-size: 14px; color: var(--voltx-text-muted); margin-bottom: 24px; }
.tier-list { list-style: none; padding: 0; margin: 0 0 28px; flex-grow: 1; }
.tier-list li {
  display: flex; align-items: flex-start; gap: 10px;
  font-size: 14px; color: var(--voltx-text);
  margin-bottom: 12px;
}
.tier-list li::before {
  content: '✓';
  color: var(--voltx-orange);
  font-weight: 700;
  flex-shrink: 0;
}

/* ---------- Spec table ---------- */
.spec-table { width: 100%; border-collapse: collapse; font-family: var(--font-mono); font-size: 13px; }
.spec-table th, .spec-table td {
  text-align: left;
  padding: 10px 14px;
  border-bottom: 1px solid var(--voltx-outline);
}
.spec-table th { color: var(--voltx-orange); font-weight: 600; text-transform: uppercase; font-size: 11px; letter-spacing: 0.05em; }
.spec-table td { color: var(--voltx-text); }
.spec-table tr:hover td { background: rgba(63,208,255,0.04); }

/* ---------- Forms ---------- */
.form-wrap {
  background: var(--voltx-surface-container);
  border: 1px solid var(--voltx-outline);
  border-radius: 4px;
  padding: 40px;
}
.form-row { margin-bottom: 20px; }
.form-row label {
  display: block;
  font-family: var(--font-mono);
  font-size: 12px;
  text-transform: uppercase;
  letter-spacing: 0.06em;
  color: var(--voltx-text-muted);
  margin-bottom: 8px;
}
.form-row input, .form-row select, .form-row textarea {
  width: 100%;
  background: var(--voltx-blue);
  border: 1px solid var(--voltx-outline);
  border-radius: 4px;
  padding: 12px 14px;
  color: #fff;
  font-family: var(--font-body);
  font-size: 14px;
  transition: border-color 0.2s ease;
}
.form-row input:focus, .form-row select:focus, .form-row textarea:focus {
  outline: none;
  border-color: var(--voltx-cyan);
}
.form-row-grid { display: grid; grid-template-columns: 1fr 1fr; gap: 16px; }
@media (max-width: 600px) { .form-row-grid { grid-template-columns: 1fr; } }
.form-success {
  display: none;
  text-align: center;
  padding: 40px;
}
.form-success.show { display: block; }
.form-success .icon { font-size: 40px; margin-bottom: 16px; }
.form-success h3 { font-family: var(--font-display); color: #fff; margin-bottom: 8px; }
.form-success p { color: var(--voltx-text-muted); }

/* ---------- CTA split ---------- */
.cta-split { display: grid; grid-template-columns: 1fr 1fr; }
@media (max-width: 800px) { .cta-split { grid-template-columns: 1fr; } }
.cta-panel {
  padding: 80px 40px;
  display: flex; flex-direction: column; align-items: center; text-align: center;
}
.cta-panel.blue { background: var(--voltx-blue); border-right: 1px solid rgba(255,106,26,0.2); }
.cta-panel.orange { background: var(--voltx-orange); }
.cta-panel .cta-icon {
  width: 64px; height: 64px;
  border-radius: 50%;
  display: flex; align-items: center; justify-content: center;
  margin-bottom: 20px;
  font-size: 26px;
}
.cta-panel.blue .cta-icon { background: var(--voltx-surface-container-highest); border: 1px solid var(--voltx-outline); }
.cta-panel.orange .cta-icon { background: rgba(0,0,0,0.15); }
.cta-panel h3 { font-family: var(--font-display); font-size: 22px; margin: 0 0 12px; color: #fff; }
.cta-panel p { max-width: 360px; margin: 0 0 28px; font-size: 15px; }
.cta-panel.blue p { color: var(--voltx-text-muted); }
.cta-panel.orange p { color: rgba(255,255,255,0.85); }

/* ---------- Footer ---------- */
.site-footer {
  background: var(--voltx-blue-deep);
  border-top: 1px solid rgba(255,106,26,0.25);
  padding: 64px 0 32px;
}
.footer-grid {
  display: grid;
  grid-template-columns: 1.4fr 1fr 1fr 1fr;
  gap: 40px;
  margin-bottom: 40px;
}
@media (max-width: 800px) { .footer-grid { grid-template-columns: 1fr 1fr; } }
@media (max-width: 500px) { .footer-grid { grid-template-columns: 1fr; } }
.footer-col h4 {
  font-family: var(--font-mono);
  font-size: 12px;
  text-transform: uppercase;
  letter-spacing: 0.08em;
  color: var(--voltx-orange);
  margin: 0 0 16px;
}
.footer-col a, .footer-col p {
  display: block;
  font-size: 14px;
  color: var(--voltx-text-muted);
  margin-bottom: 10px;
}
.footer-col a:hover { color: var(--voltx-cyan); }
.footer-bottom {
  border-top: 1px solid var(--voltx-outline);
  padding-top: 24px;
  display: flex;
  justify-content: space-between;
  align-items: center;
  flex-wrap: wrap;
  gap: 12px;
  font-family: var(--font-mono);
  font-size: 12px;
  color: var(--voltx-text-muted);
}

/* ---------- Utility ---------- */
.text-center { text-align: center; }
.mt-0 { margin-top: 0; }
.hidden { display: none !important; }

/* i18n: hide non-active language by default */
[data-i18n] { display: none; }
[data-i18n].lang-active { display: block; }
span[data-i18n].lang-active { display: inline; }
div[data-i18n].lang-active { display: block; }
li[data-i18n].lang-active { display: flex; }