/* ═════════════════════════════════════════════════════════════════════════
   VLTE — Design System
   Predominantly black background, white typography, graphite/charcoal
   accents with subtle metallic-silver highlights. Sharp geometric shapes,
   spacious layouts, strong contrast, restrained motion.
   ═════════════════════════════════════════════════════════════════════════ */

:root {
  --bg:            #050506;
  --bg-elev:       #0a0a0c;
  --bg-elev-2:     #101014;
  --line:          #1c1e23;
  --line-strong:   #2a2d34;
  --ink:           #f4f5f7;
  --ink-2:         #c9ccd1;
  --ink-3:         #8a8f96;
  --ink-4:         #5b6068;
  --silver:        #bfc4cb;
  --silver-hi:     #e8ebef;
  --graphite:      #22252b;
  --danger:        #b45454;

  --font-display:  'Inter', 'Helvetica Neue', ui-sans-serif, system-ui, -apple-system, Segoe UI, Roboto, Arial, sans-serif;
  --font-body:     'Inter', system-ui, -apple-system, Segoe UI, Roboto, sans-serif;

  --max-w:         1200px;
  --gutter:        clamp(20px, 4vw, 40px);
  --radius:        2px;
  --shadow-soft:   0 30px 60px -30px rgba(0,0,0,0.8), 0 12px 24px -12px rgba(0,0,0,0.6);
  --transition:    200ms cubic-bezier(.2,.7,.2,1);
}

* { box-sizing: border-box; }
html { scroll-behavior: smooth; }
@media (prefers-reduced-motion: reduce) {
  html { scroll-behavior: auto; }
  * { animation-duration: 0s !important; transition-duration: 0s !important; }
}

html, body {
  margin: 0;
  padding: 0;
  background: var(--bg);
  color: var(--ink);
  font-family: var(--font-body);
  font-size: 16px;
  line-height: 1.6;
  -webkit-font-smoothing: antialiased;
  -moz-osx-font-smoothing: grayscale;
  min-height: 100%;
}

img { max-width: 100%; height: auto; display: block; }
a  { color: var(--silver-hi); text-decoration: none; transition: color var(--transition); }
a:hover, a:focus-visible { color: var(--ink); }
a:focus-visible, button:focus-visible, input:focus-visible,
select:focus-visible, textarea:focus-visible {
  outline: 2px solid var(--silver-hi);
  outline-offset: 3px;
}

/* ── Layout primitives ──────────────────────────────────────────── */
.container { max-width: var(--max-w); margin: 0 auto; padding: 0 var(--gutter); }
.section   { padding: clamp(64px, 10vw, 128px) 0; }
.section--tight { padding: clamp(48px, 7vw, 88px) 0; }
.grid      { display: grid; gap: clamp(20px, 3vw, 32px); }
.grid--2   { grid-template-columns: repeat(2, 1fr); }
.grid--3   { grid-template-columns: repeat(3, 1fr); }
.grid--4   { grid-template-columns: repeat(4, 1fr); }
@media (max-width: 900px) {
  .grid--2, .grid--3, .grid--4 { grid-template-columns: 1fr; }
}

/* ── Typography ────────────────────────────────────────────────── */
.eyebrow {
  color: var(--ink-3);
  font-size: 11px;
  letter-spacing: 0.32em;
  text-transform: uppercase;
  font-weight: 500;
}
h1, h2, h3, h4 {
  font-family: var(--font-display);
  color: var(--ink);
  font-weight: 600;
  letter-spacing: -0.01em;
  line-height: 1.12;
  margin: 0 0 20px;
}
h1 { font-size: clamp(2.4rem, 6.5vw, 4.5rem); letter-spacing: -0.02em; }
h2 { font-size: clamp(1.8rem, 3.6vw, 2.8rem); }
h3 { font-size: clamp(1.25rem, 2vw, 1.55rem); }
h4 { font-size: 1.1rem; text-transform: uppercase; letter-spacing: 0.14em; }
p  { color: var(--ink-2); margin: 0 0 18px; max-width: 68ch; }
p.lead { font-size: 1.2rem; color: var(--ink-2); line-height: 1.55; }
ul, ol { color: var(--ink-2); padding-left: 22px; }

hr {
  border: 0;
  height: 1px;
  background: var(--line);
  margin: clamp(32px, 6vw, 64px) 0;
}

/* ── Header ────────────────────────────────────────────────────── */
.site-header {
  position: sticky; top: 0; z-index: 40;
  background: rgba(5,5,6,0.72);
  backdrop-filter: saturate(160%) blur(14px);
  -webkit-backdrop-filter: saturate(160%) blur(14px);
  border-bottom: 1px solid var(--line);
}
.nav {
  display: flex; align-items: center; justify-content: space-between;
  gap: 24px; padding: 18px 0;
}
.brand { display: flex; align-items: center; gap: 12px; }
.brand img { height: 28px; width: auto; }
.brand-word {
  color: var(--ink); font-weight: 600; letter-spacing: 0.24em; font-size: 15px;
}
.nav-links { display: flex; gap: 28px; align-items: center; }
.nav-links a {
  color: var(--ink-2);
  font-size: 13px; letter-spacing: 0.16em; text-transform: uppercase; font-weight: 500;
}
.nav-links a[aria-current="page"] { color: var(--ink); }
.nav-cta { display: inline-flex; align-items: center; gap: 8px; }
.nav-toggle {
  display: none; background: none; border: 1px solid var(--line-strong);
  color: var(--ink); padding: 8px 12px; letter-spacing: 0.18em; font-size: 11px;
  text-transform: uppercase; cursor: pointer; border-radius: var(--radius);
}
@media (max-width: 900px) {
  .nav-links { display: none; }
  .nav-toggle { display: inline-flex; }
  .site-header.open .nav-links {
    display: flex; flex-direction: column; position: absolute;
    top: 100%; left: 0; right: 0; background: var(--bg);
    padding: 20px var(--gutter); border-bottom: 1px solid var(--line);
    gap: 18px;
  }
}

/* ── Buttons ───────────────────────────────────────────────────── */
.btn {
  display: inline-flex; align-items: center; justify-content: center; gap: 8px;
  padding: 14px 24px; font-family: var(--font-display);
  font-size: 12.5px; font-weight: 600; letter-spacing: 0.2em; text-transform: uppercase;
  color: var(--ink); background: transparent; border: 1px solid var(--line-strong);
  border-radius: var(--radius); cursor: pointer; transition: all var(--transition);
  min-height: 46px; text-decoration: none;
}
.btn:hover, .btn:focus-visible { border-color: var(--silver-hi); color: var(--silver-hi); background: rgba(255,255,255,0.03); }
.btn--primary {
  background: var(--ink); color: #050506; border-color: var(--ink);
}
.btn--primary:hover, .btn--primary:focus-visible {
  background: var(--silver-hi); color: #050506; border-color: var(--silver-hi);
}
.btn--ghost { border-color: transparent; color: var(--ink-2); }
.btn--ghost:hover { border-color: var(--line-strong); color: var(--ink); }
.btn--sm { padding: 10px 16px; font-size: 11px; min-height: 38px; }
.btn--full { display: flex; width: 100%; }

/* ── Hero ──────────────────────────────────────────────────────── */
.hero {
  position: relative;
  padding: clamp(80px, 14vw, 180px) 0 clamp(64px, 12vw, 140px);
  overflow: hidden;
  background:
    radial-gradient(1200px 700px at 80% -100px, rgba(255,255,255,0.05), transparent 60%),
    radial-gradient(700px 400px at -10% 100%, rgba(255,255,255,0.03), transparent 60%),
    linear-gradient(180deg, #050506 0%, #0a0a0c 100%);
}
.hero::before {
  content: ''; position: absolute; inset: 0;
  background-image:
    linear-gradient(115deg, transparent 40%, rgba(255,255,255,0.04) 50%, transparent 60%),
    repeating-linear-gradient(90deg, rgba(255,255,255,0.015) 0 1px, transparent 1px 80px);
  pointer-events: none;
}
.hero-content { position: relative; }
.hero .eyebrow { margin-bottom: 20px; }
.hero h1 {
  max-width: 18ch; margin-bottom: 26px;
  background: linear-gradient(180deg, #fff 0%, #cfd3d9 100%);
  -webkit-background-clip: text; background-clip: text; -webkit-text-fill-color: transparent;
}
.hero p.lead { max-width: 56ch; margin-bottom: 34px; color: var(--ink-2); }
.hero-actions { display: flex; gap: 14px; flex-wrap: wrap; align-items: center; }

/* ── Trust strip ───────────────────────────────────────────────── */
.trust {
  border-top: 1px solid var(--line);
  border-bottom: 1px solid var(--line);
  padding: 22px 0;
  background: rgba(255,255,255,0.015);
}
.trust ul {
  margin: 0; padding: 0; list-style: none;
  display: flex; flex-wrap: wrap; gap: clamp(16px, 3vw, 40px);
  justify-content: center; color: var(--ink-3);
}
.trust li {
  display: inline-flex; align-items: center; gap: 8px;
  font-size: 11px; letter-spacing: 0.24em; text-transform: uppercase; font-weight: 500;
}
.trust li::before {
  content: ''; width: 4px; height: 4px; background: var(--silver);
  transform: rotate(45deg); display: inline-block;
}

/* ── Cards ─────────────────────────────────────────────────────── */
.card {
  background: linear-gradient(180deg, var(--bg-elev), var(--bg-elev-2));
  border: 1px solid var(--line);
  padding: clamp(24px, 3vw, 34px);
  border-radius: var(--radius);
  transition: border-color var(--transition), transform var(--transition);
  position: relative; overflow: hidden;
  height: 100%;
}
.card:hover { border-color: var(--line-strong); }
.card h3 { margin-bottom: 12px; }
.card p:last-child { margin-bottom: 0; }
.card .card-eyebrow {
  display: block; font-size: 10.5px; letter-spacing: 0.28em; text-transform: uppercase;
  color: var(--ink-3); margin-bottom: 12px;
}
.card--feature::before {
  content: ''; position: absolute; top: 0; left: 0; width: 40px; height: 1px; background: var(--silver-hi);
}

/* ── Section headers ───────────────────────────────────────────── */
.section-header { max-width: 780px; margin-bottom: clamp(36px, 6vw, 56px); }
.section-header .eyebrow { margin-bottom: 14px; }
.section-header p { color: var(--ink-2); }

/* ── Split panels ──────────────────────────────────────────────── */
.split {
  display: grid; grid-template-columns: 1.05fr 1fr;
  gap: clamp(32px, 6vw, 80px); align-items: start;
}
@media (max-width: 900px) { .split { grid-template-columns: 1fr; } }

/* ── Definition list / spec rows ───────────────────────────────── */
.spec {
  display: grid; grid-template-columns: 180px 1fr;
  gap: 20px; padding: 18px 0; border-top: 1px solid var(--line);
}
.spec:last-child { border-bottom: 1px solid var(--line); }
.spec dt {
  color: var(--ink-3); font-size: 11px; letter-spacing: 0.24em; text-transform: uppercase; font-weight: 500;
}
.spec dd { margin: 0; color: var(--ink); }
@media (max-width: 700px) { .spec { grid-template-columns: 1fr; gap: 4px; } }

/* ── Callouts ──────────────────────────────────────────────────── */
.callout {
  border: 1px solid var(--line-strong);
  padding: clamp(24px, 4vw, 40px);
  background: linear-gradient(180deg, rgba(255,255,255,0.03), rgba(255,255,255,0.01));
  border-radius: var(--radius);
}
.callout--dark {
  background: #000; border-color: #0f1116;
}
.badge-soon {
  display: inline-block; padding: 4px 10px;
  background: rgba(255,255,255,0.08); border: 1px solid var(--line-strong);
  color: var(--silver-hi); font-size: 10px; letter-spacing: 0.28em;
  text-transform: uppercase; border-radius: var(--radius);
}

/* ── Footer ────────────────────────────────────────────────────── */
.site-footer {
  border-top: 1px solid var(--line);
  padding: clamp(48px, 7vw, 80px) 0 32px;
  background: #030304;
  color: var(--ink-3);
}
.footer-grid {
  display: grid; grid-template-columns: 1.4fr 1fr 1fr 1fr;
  gap: clamp(24px, 4vw, 48px); margin-bottom: 40px;
}
@media (max-width: 900px) { .footer-grid { grid-template-columns: 1fr 1fr; } }
@media (max-width: 560px) { .footer-grid { grid-template-columns: 1fr; } }
.site-footer h5 {
  color: var(--ink); font-size: 11px; letter-spacing: 0.24em;
  text-transform: uppercase; margin: 0 0 16px;
}
.site-footer a { color: var(--ink-2); font-size: 14px; display: block; padding: 4px 0; }
.site-footer .brand img { height: 22px; }
.site-footer p { color: var(--ink-3); font-size: 14px; }
.footer-bottom {
  border-top: 1px solid var(--line); padding-top: 22px;
  display: flex; justify-content: space-between; gap: 20px; flex-wrap: wrap;
  color: var(--ink-4); font-size: 12px;
}

/* ── Forms ─────────────────────────────────────────────────────── */
form { display: block; }
.form-row { display: grid; gap: 16px; margin-bottom: 16px; }
.form-row--2 { grid-template-columns: 1fr 1fr; }
.form-row--3 { grid-template-columns: 1fr 1fr 1fr; }
@media (max-width: 700px) {
  .form-row--2, .form-row--3 { grid-template-columns: 1fr; }
}
.field { display: flex; flex-direction: column; gap: 6px; }
.field label {
  color: var(--ink-3); font-size: 11px; letter-spacing: 0.22em;
  text-transform: uppercase; font-weight: 500;
}
.field label .req { color: var(--silver-hi); }
.field input, .field select, .field textarea {
  width: 100%; background: #0d0e11; color: var(--ink);
  border: 1px solid var(--line-strong); padding: 14px 16px;
  border-radius: var(--radius); font-family: var(--font-body); font-size: 16px;
  transition: border-color var(--transition);
  min-height: 46px;
}
.field textarea { min-height: 120px; resize: vertical; line-height: 1.5; }
.field input:focus, .field select:focus, .field textarea:focus {
  border-color: var(--silver-hi); outline: none;
}
.field .hint { color: var(--ink-4); font-size: 12px; letter-spacing: 0.02em; }
.checkbox {
  display: flex; gap: 10px; align-items: flex-start; color: var(--ink-2);
  font-size: 14px; line-height: 1.5;
}
.checkbox input { width: 18px; height: 18px; margin-top: 3px; accent-color: var(--silver-hi); }

.form-status {
  margin-top: 16px; padding: 14px 18px;
  border: 1px solid var(--line-strong); background: rgba(255,255,255,0.03);
  color: var(--ink); font-size: 14px; border-radius: var(--radius);
}
.form-status.error   { border-color: #a04c4c; background: rgba(180,84,84,0.08); color: #f0d0d0; }
.form-status.success { border-color: #4c8f6b; background: rgba(76,143,107,0.08); color: #d0f0e2; }
.form-status:empty { display: none; }

/* ── Utility ───────────────────────────────────────────────────── */
.text-center { text-align: center; }
.mt-0 { margin-top: 0; } .mt-1 { margin-top: 8px; } .mt-2 { margin-top: 16px; }
.mt-3 { margin-top: 24px; } .mt-4 { margin-top: 40px; }
.muted { color: var(--ink-3); }
.small { font-size: 13px; }
.pill  {
  display: inline-block; padding: 4px 10px; border: 1px solid var(--line-strong);
  color: var(--ink-2); font-size: 11px; letter-spacing: 0.18em; text-transform: uppercase;
  border-radius: 999px;
}

/* ── FAQ ───────────────────────────────────────────────────────── */
.faq-item {
  border-top: 1px solid var(--line);
  padding: 24px 0;
}
.faq-item:last-child { border-bottom: 1px solid var(--line); }
.faq-item summary {
  cursor: pointer; list-style: none; display: flex; justify-content: space-between;
  align-items: center; gap: 20px; color: var(--ink); font-weight: 500;
  font-size: 1.05rem;
}
.faq-item summary::-webkit-details-marker { display: none; }
.faq-item summary::after {
  content: '+'; color: var(--ink-3); font-size: 22px; transition: transform var(--transition);
}
.faq-item[open] summary::after { transform: rotate(45deg); }
.faq-item p { margin-top: 14px; color: var(--ink-2); }

/* ── Admin overrides (only used by admin.html) ─────────────────── */
.admin-body { background: #030304; }
.admin-wrap { max-width: 1400px; margin: 0 auto; padding: 32px var(--gutter); }
.admin-header {
  display: flex; justify-content: space-between; align-items: center;
  flex-wrap: wrap; gap: 16px; margin-bottom: 24px;
  padding-bottom: 20px; border-bottom: 1px solid var(--line);
}
.admin-header h1 { margin: 0; font-size: 1.4rem; letter-spacing: 0.14em; text-transform: uppercase; }
.tabs { display: flex; gap: 0; flex-wrap: wrap; border-bottom: 1px solid var(--line); margin-bottom: 24px; }
.tab-btn {
  background: none; border: none; color: var(--ink-3); padding: 14px 22px;
  font: 500 12px/1 var(--font-display); letter-spacing: 0.22em; text-transform: uppercase;
  cursor: pointer; border-bottom: 2px solid transparent; transition: all var(--transition);
}
.tab-btn:hover { color: var(--ink); }
.tab-btn.active { color: var(--ink); border-bottom-color: var(--silver-hi); }
.tab-panel { display: none; } .tab-panel.active { display: block; }
.data-table { width: 100%; border-collapse: collapse; font-size: 14px; }
.data-table th {
  text-align: left; padding: 12px 10px; font: 600 10.5px/1 var(--font-display);
  letter-spacing: 0.22em; text-transform: uppercase; color: var(--ink-3);
  border-bottom: 1px solid var(--line); background: rgba(255,255,255,0.02);
}
.data-table td { padding: 14px 10px; border-bottom: 1px solid var(--line); color: var(--ink-2); vertical-align: top; }
.data-table tr:hover td { background: rgba(255,255,255,0.02); }
.badge {
  display: inline-block; padding: 3px 10px; font: 600 10px/1.4 var(--font-display);
  letter-spacing: 0.16em; text-transform: uppercase; border: 1px solid; border-radius: 2px;
}
.badge.new       { color: #e6e8ea; border-color: #4b525b; }
.badge.contacted { color: #d2c78a; border-color: #7a6f42; }
.badge.quoted    { color: #a8c3e6; border-color: #4c6a94; }
.badge.confirmed { color: #a8e0be; border-color: #3f7a5d; }
.badge.completed { color: var(--ink-3); border-color: var(--line-strong); }
.badge.cancelled,
.badge.archived  { color: #d29494; border-color: #8a4b4b; }
.row-actions { display: flex; flex-wrap: wrap; gap: 6px; }
.row-actions button {
  background: none; border: 1px solid var(--line-strong); color: var(--ink-2);
  padding: 6px 12px; font: 500 10.5px/1 var(--font-display);
  letter-spacing: 0.16em; text-transform: uppercase; cursor: pointer; border-radius: 2px;
  transition: all var(--transition);
}
.row-actions button:hover { border-color: var(--silver-hi); color: var(--ink); }
.row-actions button.danger:hover { border-color: #a04c4c; color: #f0d0d0; }
.empty { padding: 60px 20px; text-align: center; color: var(--ink-3); }
.login-card {
  max-width: 420px; margin: 80px auto; background: var(--bg-elev);
  border: 1px solid var(--line-strong); padding: 40px 32px;
}
.login-card h2 { margin: 0 0 24px; font-size: 1.3rem; letter-spacing: 0.16em; text-transform: uppercase; }
.stat-row { display: flex; gap: 16px; flex-wrap: wrap; margin-bottom: 24px; }
.stat {
  flex: 1 1 140px; padding: 16px 20px;
  background: var(--bg-elev); border: 1px solid var(--line);
}
.stat .label { color: var(--ink-3); font-size: 10.5px; letter-spacing: 0.22em; text-transform: uppercase; }
.stat .value { color: var(--ink); font-size: 1.8rem; font-weight: 600; margin-top: 6px; }

/* ── Reduced motion respect (already handled above) ────────────── */