/* =============================================================
   VoLTEsim Theme - assets/css/theme.css
   Colour scheme: Deep Navy #0c1e35 | Teal #00a896 | White #ffffff
   ============================================================= */

:root {
  --vlt-navy:        #0c1e35;
  --vlt-navy-mid:    #152d4a;
  --vlt-teal:        #00a896;
  --vlt-teal-light:  #00c4af;
  --vlt-teal-pale:   #e8f9f7;
  --vlt-teal-faint:  #f3fdfb;
  --vlt-white:       #ffffff;
  --vlt-off:         #f7fffe;
  --vlt-text:        #1c2e3e;
  --vlt-muted:       #527080;
  --vlt-border:      #d8eceb;
  --vlt-shadow:      0 2px 16px rgba(0,168,150,0.10);
  --vlt-shadow-lg:   0 8px 40px rgba(12,30,53,0.14);
  --vlt-radius:      8px;
  --vlt-radius-lg:   14px;
  --font-head:       'Fira Sans', 'Segoe UI', sans-serif;
  --font-body:       'Fira Sans', 'Segoe UI', sans-serif;
  --font-mono:       'JetBrains Mono', 'Fira Code', monospace;
  --nav-h:           68px;
  --max-w:           1100px;
  --max-w-text:      760px;
}

/* ---- Reset & Base ---- */
*, *::before, *::after { box-sizing: border-box; margin: 0; padding: 0; }

html { font-size: 16px; scroll-behavior: smooth; -webkit-font-smoothing: antialiased; }

body {
  font-family: var(--font-body);
  color: var(--vlt-text);
  background: var(--vlt-white);
  line-height: 1.7;
  font-size: 16px;
}

a { color: var(--vlt-teal); text-decoration: none; }
a:hover { color: var(--vlt-teal-light); text-decoration: underline; }

img { max-width: 100%; height: auto; display: block; }

/* ---- Navigation ---- */
#vlt-nav {
  position: sticky;
  top: 0;
  z-index: 900;
  background: var(--vlt-white);
  border-bottom: 1px solid var(--vlt-border);
  box-shadow: 0 1px 8px rgba(12,30,53,0.08);
  height: var(--nav-h);
  display: flex;
  align-items: center;
}

.vlt-nav-inner {
  max-width: var(--max-w);
  margin: 0 auto;
  padding: 0 24px;
  width: 100%;
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 24px;
}

.vlt-logo {
  display: flex;
  align-items: center;
  gap: 12px;
  text-decoration: none;
  flex-shrink: 0;
}

.vlt-logo-img {
  height: 42px;
  width: auto;
}

.vlt-logo-text {
  font-family: var(--font-head);
  font-weight: 800;
  font-size: 18px;
  letter-spacing: -0.02em;
  color: var(--vlt-navy);
  line-height: 1.1;
}

.vlt-logo-text span {
  color: var(--vlt-teal);
}

.vlt-logo:hover .vlt-logo-text { color: var(--vlt-navy); text-decoration: none; }

/* Main menu */
#vlt-main-menu {
  display: flex;
  align-items: center;
  list-style: none;
  gap: 2px;
}

#vlt-main-menu > li { position: relative; }

#vlt-main-menu > li > a {
  display: block;
  padding: 8px 14px;
  font-size: 14px;
  font-weight: 600;
  color: var(--vlt-navy);
  text-decoration: none;
  border-radius: 6px;
  transition: background 0.15s, color 0.15s;
  white-space: nowrap;
}

#vlt-main-menu > li > a:hover,
#vlt-main-menu > li.current-menu-item > a,
#vlt-main-menu > li.current-menu-ancestor > a {
  background: var(--vlt-teal-pale);
  color: var(--vlt-teal);
}

/* Dropdown */
#vlt-main-menu .sub-menu {
  display: none;
  position: absolute;
  top: 100%;
  left: 0;
  background: var(--vlt-white);
  border: 1px solid var(--vlt-border);
  border-radius: var(--vlt-radius);
  box-shadow: var(--vlt-shadow-lg);
  min-width: 210px;
  list-style: none;
  padding: 8px 0 6px;
  margin: 0;
  z-index: 1000;
}
#vlt-main-menu > li::after {
  content: ''; display: block; position: absolute;
  bottom: -8px; left: 0; right: 0; height: 8px;
}
#vlt-main-menu .sub-menu.open { display: block; }

#vlt-main-menu .sub-menu li a {
  display: block;
  padding: 9px 18px;
  font-size: 13px;
  font-weight: 500;
  color: var(--vlt-text);
  text-decoration: none;
  transition: background 0.12s, color 0.12s;
  white-space: nowrap;
}

#vlt-main-menu .sub-menu li a:hover {
  background: var(--vlt-teal-pale);
  color: var(--vlt-teal);
}

/* CTA button in nav */
.vlt-nav-cta {
  background: var(--vlt-teal);
  color: var(--vlt-white) !important;
  border-radius: 6px;
  padding: 9px 18px !important;
  font-weight: 700 !important;
  transition: background 0.15s !important;
}
.vlt-nav-cta:hover {
  background: var(--vlt-teal-light) !important;
  color: var(--vlt-white) !important;
}

/* Hamburger */
.vlt-hamburger {
  display: none;
  flex-direction: column;
  gap: 5px;
  cursor: pointer;
  padding: 8px;
  background: none;
  border: none;
}

.vlt-hamburger span {
  display: block;
  width: 22px;
  height: 2px;
  background: var(--vlt-navy);
  border-radius: 2px;
  transition: all 0.2s;
}

/* ---- Hero ---- */
.vlt-hero {
  background: var(--vlt-navy);
  color: var(--vlt-white);
  padding: 80px 24px;
  position: relative;
  overflow: hidden;
}

.vlt-hero::before {
  content: '';
  position: absolute;
  inset: 0;
  background: radial-gradient(ellipse 60% 80% at 70% 50%, rgba(0,168,150,0.15) 0%, transparent 70%);
  pointer-events: none;
}

.vlt-hero-inner {
  max-width: var(--max-w);
  margin: 0 auto;
  display: grid;
  grid-template-columns: 1fr 420px;
  gap: 60px;
  align-items: center;
}

.vlt-hero-label {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  font-family: var(--font-mono);
  font-size: 11px;
  letter-spacing: 0.14em;
  text-transform: uppercase;
  color: var(--vlt-teal-light);
  margin-bottom: 20px;
  font-weight: 500;
}

.vlt-hero-label::before {
  content: '';
  display: block;
  width: 24px;
  height: 2px;
  background: var(--vlt-teal);
}

.vlt-hero h1 {
  font-family: var(--font-head);
  font-size: clamp(30px, 4vw, 52px);
  font-weight: 800;
  line-height: 1.1;
  letter-spacing: -0.03em;
  color: var(--vlt-white);
  margin-bottom: 22px;
}

.vlt-hero h1 em {
  font-style: normal;
  color: var(--vlt-teal-light);
}

.vlt-hero-sub {
  font-size: 18px;
  color: rgba(255,255,255,0.75);
  line-height: 1.6;
  margin-bottom: 36px;
  max-width: 540px;
}

.vlt-hero-btns {
  display: flex;
  gap: 14px;
  flex-wrap: wrap;
}

.btn-primary {
  background: var(--vlt-teal);
  color: var(--vlt-white);
  padding: 13px 28px;
  border-radius: 7px;
  font-weight: 700;
  font-size: 15px;
  text-decoration: none;
  transition: background 0.15s, transform 0.1s;
  display: inline-block;
}
.btn-primary:hover {
  background: var(--vlt-teal-light);
  color: var(--vlt-white);
  text-decoration: none;
  transform: translateY(-1px);
}

.btn-ghost {
  background: rgba(255,255,255,0.08);
  color: rgba(255,255,255,0.9);
  border: 1px solid rgba(255,255,255,0.2);
  padding: 13px 28px;
  border-radius: 7px;
  font-weight: 600;
  font-size: 15px;
  text-decoration: none;
  transition: background 0.15s;
  display: inline-block;
}
.btn-ghost:hover {
  background: rgba(255,255,255,0.14);
  color: var(--vlt-white);
  text-decoration: none;
}

/* Hero quick-answer card */
.vlt-hero-card {
  background: rgba(255,255,255,0.06);
  border: 1px solid rgba(0,168,150,0.3);
  border-radius: var(--vlt-radius-lg);
  padding: 28px;
}

.vlt-hero-card-label {
  font-family: var(--font-mono);
  font-size: 10px;
  letter-spacing: 0.12em;
  text-transform: uppercase;
  color: var(--vlt-teal);
  margin-bottom: 12px;
  font-weight: 600;
}

.vlt-hero-card h3 {
  font-size: 16px;
  font-weight: 700;
  color: var(--vlt-white);
  margin-bottom: 10px;
}

.vlt-hero-card p {
  font-size: 14px;
  color: rgba(255,255,255,0.7);
  line-height: 1.6;
}

/* ---- Stat strip ---- */
.vlt-stats {
  background: var(--vlt-white);
  border-bottom: 1px solid var(--vlt-border);
  padding: 0 24px;
}

.vlt-stats-inner {
  max-width: var(--max-w);
  margin: 0 auto;
  display: grid;
  grid-template-columns: repeat(4, 1fr);
}

.vlt-stat {
  padding: 28px 24px;
  text-align: center;
  border-right: 1px solid var(--vlt-border);
}
.vlt-stat:last-child { border-right: none; }

.vlt-stat-val {
  display: block;
  font-size: 28px;
  font-weight: 800;
  color: var(--vlt-navy);
  letter-spacing: -0.03em;
  line-height: 1.1;
  margin-bottom: 4px;
}
.vlt-stat-val em {
  font-style: normal;
  color: var(--vlt-teal);
}

.vlt-stat-label {
  font-size: 12px;
  color: var(--vlt-muted);
  font-weight: 500;
  line-height: 1.4;
}

/* ---- Sections ---- */
.vlt-section { padding: 80px 24px; }
.vlt-section-white { background: var(--vlt-white); }
.vlt-section-off { background: var(--vlt-teal-faint); }
.vlt-section-navy { background: var(--vlt-navy); color: var(--vlt-white); }
.vlt-section-tint { background: var(--vlt-teal-pale); }

.vlt-container { max-width: var(--max-w); margin: 0 auto; }
.vlt-container-text { max-width: var(--max-w-text); margin: 0 auto; }

.vlt-section-tag {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  font-family: var(--font-mono);
  font-size: 11px;
  color: var(--vlt-teal);
  letter-spacing: 0.12em;
  text-transform: uppercase;
  margin-bottom: 12px;
  font-weight: 600;
}
.vlt-section-tag-light {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  font-family: var(--font-mono);
  font-size: 11px;
  color: rgba(0,196,175,0.9);
  letter-spacing: 0.12em;
  text-transform: uppercase;
  margin-bottom: 12px;
  font-weight: 600;
}

/* Section headings */
.vlt-section h2 {
  font-size: clamp(24px, 3vw, 38px);
  font-weight: 800;
  letter-spacing: -0.025em;
  line-height: 1.15;
  color: var(--vlt-navy);
  margin-bottom: 16px;
}
.vlt-section-navy h2 { color: var(--vlt-white); }

.vlt-section-lead {
  font-size: 18px;
  color: var(--vlt-muted);
  max-width: 600px;
  margin-bottom: 52px;
  line-height: 1.6;
}
.vlt-section-navy .vlt-section-lead { color: rgba(255,255,255,0.65); }

/* ---- Cards grid ---- */
.vlt-cards {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 24px;
}

.vlt-card {
  background: var(--vlt-white);
  border: 1px solid var(--vlt-border);
  border-radius: var(--vlt-radius-lg);
  padding: 28px;
  transition: box-shadow 0.2s, transform 0.2s;
}

.vlt-card:hover {
  box-shadow: var(--vlt-shadow-lg);
  transform: translateY(-3px);
}

.vlt-card-icon {
  width: 44px;
  height: 44px;
  background: var(--vlt-teal-pale);
  border-radius: 10px;
  display: flex;
  align-items: center;
  justify-content: center;
  margin-bottom: 18px;
  font-size: 22px;
}

.vlt-card h3 {
  font-size: 17px;
  font-weight: 700;
  color: var(--vlt-navy);
  margin-bottom: 10px;
  line-height: 1.3;
}

.vlt-card p {
  font-size: 14px;
  color: var(--vlt-muted);
  line-height: 1.65;
  margin-bottom: 16px;
}

.vlt-card-link {
  font-size: 13px;
  font-weight: 700;
  color: var(--vlt-teal);
  text-decoration: none;
  display: inline-flex;
  align-items: center;
  gap: 5px;
}
.vlt-card-link::after { content: ' →'; }
.vlt-card-link:hover { color: var(--vlt-teal-light); text-decoration: none; }

/* ---- Quick answer box ---- */
.vlt-answer-box {
  border-left: 4px solid var(--vlt-teal);
  background: var(--vlt-teal-pale);
  border-radius: 0 var(--vlt-radius) var(--vlt-radius) 0;
  padding: 24px 28px;
  margin: 32px 0;
}

.vlt-answer-box-label {
  font-family: var(--font-mono);
  font-size: 10px;
  letter-spacing: 0.14em;
  text-transform: uppercase;
  color: var(--vlt-teal);
  font-weight: 700;
  margin-bottom: 8px;
}

.vlt-answer-box p {
  font-size: 16px;
  color: var(--vlt-text);
  line-height: 1.7;
  margin: 0;
}

.vlt-answer-box strong { color: var(--vlt-navy); }

/* ---- Definition box ---- */
.vlt-def-box {
  background: var(--vlt-navy);
  color: var(--vlt-white);
  border-radius: var(--vlt-radius-lg);
  padding: 28px 32px;
  margin: 32px 0;
}

.vlt-def-box-term {
  font-family: var(--font-mono);
  font-size: 22px;
  font-weight: 700;
  color: var(--vlt-teal-light);
  margin-bottom: 10px;
  letter-spacing: -0.01em;
}

.vlt-def-box p {
  font-size: 15px;
  color: rgba(255,255,255,0.8);
  line-height: 1.7;
  margin: 0;
}

/* ---- Spec table ---- */
.vlt-spec-table {
  width: 100%;
  border-collapse: collapse;
  font-size: 14px;
  margin: 28px 0;
  background: var(--vlt-white);
  border-radius: var(--vlt-radius);
  overflow: hidden;
  box-shadow: 0 0 0 1px var(--vlt-border);
}

.vlt-spec-table th {
  background: var(--vlt-navy);
  color: var(--vlt-white);
  text-align: left;
  padding: 12px 18px;
  font-size: 12px;
  font-weight: 700;
  letter-spacing: 0.06em;
  text-transform: uppercase;
}

.vlt-spec-table td {
  padding: 12px 18px;
  border-bottom: 1px solid var(--vlt-border);
  color: var(--vlt-text);
  vertical-align: top;
}

.vlt-spec-table tr:last-child td { border-bottom: none; }
.vlt-spec-table tr:nth-child(even) td { background: var(--vlt-teal-faint); }

.vlt-spec-table td:first-child {
  font-weight: 600;
  color: var(--vlt-navy);
  white-space: nowrap;
}

/* ---- Two-col layout ---- */
.vlt-two-col {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 60px;
  align-items: start;
}

.vlt-two-col-text h2 {
  font-size: clamp(22px, 2.5vw, 32px);
  font-weight: 800;
  color: var(--vlt-navy);
  margin-bottom: 16px;
  letter-spacing: -0.02em;
}

.vlt-two-col-text p {
  font-size: 15px;
  color: var(--vlt-muted);
  line-height: 1.7;
  margin-bottom: 16px;
}

/* ---- SVG diagram wrapper ---- */
.vlt-diagram {
  background: var(--vlt-white);
  border: 1px solid var(--vlt-border);
  border-radius: var(--vlt-radius-lg);
  padding: 28px;
  margin: 32px 0;
  overflow: hidden;
}

.vlt-diagram-title {
  font-size: 13px;
  font-weight: 700;
  color: var(--vlt-navy);
  margin-bottom: 20px;
  font-family: var(--font-mono);
  letter-spacing: 0.04em;
  text-transform: uppercase;
}

.vlt-diagram svg {
  width: 100%;
  height: auto;
  display: block;
}

/* ---- Checklist ---- */
.vlt-checklist {
  list-style: none;
  margin: 20px 0;
}

.vlt-checklist li {
  padding: 8px 0 8px 32px;
  position: relative;
  font-size: 15px;
  color: var(--vlt-text);
  border-bottom: 1px solid var(--vlt-border);
  line-height: 1.6;
}

.vlt-checklist li:last-child { border-bottom: none; }

.vlt-checklist li::before {
  content: '';
  position: absolute;
  left: 0;
  top: 14px;
  width: 18px;
  height: 18px;
  background: var(--vlt-teal);
  border-radius: 50%;
  background-image: url("data:image/svg+xml,%3Csvg xmlns='http://www.w3.org/2000/svg' viewBox='0 0 12 12'%3E%3Cpath d='M2 6l3 3 5-5' stroke='white' stroke-width='1.8' fill='none' stroke-linecap='round' stroke-linejoin='round'/%3E%3C/svg%3E");
  background-size: 12px;
  background-repeat: no-repeat;
  background-position: center;
}

/* ---- Warning / info boxes ---- */
.vlt-alert {
  border-radius: var(--vlt-radius);
  padding: 18px 22px;
  margin: 24px 0;
  font-size: 14px;
  line-height: 1.65;
}

.vlt-alert-warning {
  background: #fff8e6;
  border: 1px solid #f5c842;
  border-left: 4px solid #f5c842;
  color: #5a4200;
}

.vlt-alert-info {
  background: var(--vlt-teal-pale);
  border: 1px solid var(--vlt-teal);
  border-left: 4px solid var(--vlt-teal);
  color: var(--vlt-text);
}

.vlt-alert-info strong,
.vlt-alert-warning strong {
  display: block;
  font-weight: 700;
  margin-bottom: 4px;
}

/* ---- Glossary ---- */
.vlt-glossary-term {
  padding: 20px 0;
  border-bottom: 1px solid var(--vlt-border);
}

.vlt-glossary-term:last-child { border-bottom: none; }

.vlt-glossary-term dt {
  font-family: var(--font-mono);
  font-size: 15px;
  font-weight: 700;
  color: var(--vlt-navy);
  margin-bottom: 6px;
}

.vlt-glossary-term dd {
  font-size: 14px;
  color: var(--vlt-muted);
  line-height: 1.65;
  margin: 0;
}

/* ---- CTA banner ---- */
.vlt-cta-banner {
  background: var(--vlt-teal);
  color: var(--vlt-white);
  border-radius: var(--vlt-radius-lg);
  padding: 48px 52px;
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 32px;
  margin: 48px 0;
}

.vlt-cta-banner-text h3 {
  font-size: 24px;
  font-weight: 800;
  color: var(--vlt-white);
  margin-bottom: 8px;
  letter-spacing: -0.02em;
}

.vlt-cta-banner-text p {
  font-size: 15px;
  color: rgba(255,255,255,0.85);
  line-height: 1.6;
  margin: 0;
}

.btn-cta-white {
  background: var(--vlt-white);
  color: var(--vlt-teal);
  padding: 13px 28px;
  border-radius: 7px;
  font-weight: 800;
  font-size: 15px;
  text-decoration: none;
  white-space: nowrap;
  transition: box-shadow 0.15s;
  display: inline-block;
  flex-shrink: 0;
}
.btn-cta-white:hover {
  box-shadow: 0 4px 20px rgba(0,0,0,0.15);
  color: var(--vlt-teal);
  text-decoration: none;
}

/* ---- VoNR teaser ---- */
.vlt-vonr-teaser {
  background: var(--vlt-navy);
  border: 1px solid rgba(0,168,150,0.3);
  border-radius: var(--vlt-radius-lg);
  padding: 40px;
  text-align: center;
  margin: 48px 0;
}

.vlt-vonr-teaser .badge {
  display: inline-block;
  background: rgba(0,168,150,0.2);
  border: 1px solid rgba(0,168,150,0.4);
  color: var(--vlt-teal-light);
  font-family: var(--font-mono);
  font-size: 11px;
  letter-spacing: 0.12em;
  text-transform: uppercase;
  padding: 5px 14px;
  border-radius: 20px;
  margin-bottom: 16px;
  font-weight: 600;
}

.vlt-vonr-teaser h3 {
  font-size: 22px;
  font-weight: 800;
  color: var(--vlt-white);
  margin-bottom: 12px;
  letter-spacing: -0.02em;
}

.vlt-vonr-teaser p {
  font-size: 15px;
  color: rgba(255,255,255,0.7);
  margin-bottom: 24px;
  max-width: 520px;
  margin-left: auto;
  margin-right: auto;
  line-height: 1.65;
}

.btn-vonr {
  background: var(--vlt-teal);
  color: var(--vlt-white);
  padding: 12px 26px;
  border-radius: 7px;
  font-weight: 700;
  font-size: 14px;
  text-decoration: none;
  display: inline-block;
  transition: background 0.15s;
}
.btn-vonr:hover {
  background: var(--vlt-teal-light);
  color: var(--vlt-white);
  text-decoration: none;
}

/* ---- Breadcrumb ---- */
.vlt-breadcrumb {
  background: var(--vlt-teal-faint);
  border-bottom: 1px solid var(--vlt-border);
  padding: 12px 24px;
  font-size: 13px;
  color: var(--vlt-muted);
}

.vlt-breadcrumb-inner {
  max-width: var(--max-w);
  margin: 0 auto;
}

.vlt-breadcrumb a { color: var(--vlt-teal); text-decoration: none; }
.vlt-breadcrumb a:hover { text-decoration: underline; }
.vlt-breadcrumb .sep { margin: 0 8px; color: var(--vlt-border); }

/* ---- Page header ---- */
.vlt-page-header {
  background: var(--vlt-navy);
  color: var(--vlt-white);
  padding: 60px 24px;
}

.vlt-page-header-inner {
  max-width: var(--max-w);
  margin: 0 auto;
  max-width: var(--max-w-text);
}

.vlt-page-header .vlt-section-tag { color: var(--vlt-teal-light); margin-bottom: 14px; }

.vlt-page-header h1 {
  font-size: clamp(26px, 3.5vw, 44px);
  font-weight: 800;
  color: var(--vlt-white);
  letter-spacing: -0.025em;
  line-height: 1.15;
  margin-bottom: 16px;
}

.vlt-page-header-desc {
  font-size: 17px;
  color: rgba(255,255,255,0.7);
  line-height: 1.6;
  max-width: 600px;
}

/* ---- Content area ---- */
.vlt-content-area {
  padding: 64px 24px;
}

.vlt-content-inner {
  max-width: var(--max-w-text);
  margin: 0 auto;
}

/* Prose styles */
.vlt-prose h2 {
  font-size: 24px;
  font-weight: 800;
  color: var(--vlt-navy);
  margin: 48px 0 16px;
  letter-spacing: -0.02em;
  padding-top: 8px;
  border-top: 2px solid var(--vlt-teal-pale);
}

.vlt-prose h3 {
  font-size: 18px;
  font-weight: 700;
  color: var(--vlt-navy);
  margin: 32px 0 12px;
  letter-spacing: -0.01em;
}

.vlt-prose p {
  font-size: 16px;
  line-height: 1.8;
  color: var(--vlt-text);
  margin-bottom: 20px;
}

.vlt-prose ul, .vlt-prose ol {
  margin: 16px 0 20px 24px;
}

.vlt-prose li {
  font-size: 15px;
  line-height: 1.7;
  color: var(--vlt-text);
  margin-bottom: 6px;
}

.vlt-prose strong { color: var(--vlt-navy); font-weight: 700; }
.vlt-prose code {
  font-family: var(--font-mono);
  font-size: 13px;
  background: var(--vlt-teal-pale);
  color: var(--vlt-navy);
  padding: 2px 7px;
  border-radius: 4px;
}

/* ---- Sidebar layout ---- */
.vlt-page-with-sidebar {
  max-width: var(--max-w);
  margin: 0 auto;
  display: grid;
  grid-template-columns: 1fr 280px;
  gap: 48px;
  align-items: start;
}

.vlt-sidebar {
  position: sticky;
  top: calc(var(--nav-h) + 24px);
}

.vlt-sidebar-widget {
  background: var(--vlt-white);
  border: 1px solid var(--vlt-border);
  border-radius: var(--vlt-radius-lg);
  padding: 22px;
  margin-bottom: 20px;
}

.vlt-sidebar-widget h4 {
  font-size: 12px;
  font-weight: 700;
  text-transform: uppercase;
  letter-spacing: 0.1em;
  color: var(--vlt-muted);
  margin-bottom: 14px;
  font-family: var(--font-mono);
}

.vlt-sidebar-widget ul {
  list-style: none;
}

.vlt-sidebar-widget ul li a {
  display: block;
  font-size: 13px;
  color: var(--vlt-text);
  padding: 7px 0;
  border-bottom: 1px solid var(--vlt-border);
  text-decoration: none;
  transition: color 0.15s;
  line-height: 1.4;
}
.vlt-sidebar-widget ul li:last-child a { border-bottom: none; }
.vlt-sidebar-widget ul li a:hover { color: var(--vlt-teal); }

/* Author widget */
.vlt-author-widget {
  background: var(--vlt-navy);
  color: var(--vlt-white);
  border: none;
  border-radius: var(--vlt-radius-lg);
  padding: 22px;
  margin-bottom: 20px;
}
.vlt-author-widget .author-name {
  font-size: 15px;
  font-weight: 700;
  color: var(--vlt-white);
  margin-bottom: 6px;
}
.vlt-author-widget .author-bio {
  font-size: 13px;
  color: rgba(255,255,255,0.65);
  line-height: 1.6;
}
.vlt-author-widget a {
  color: var(--vlt-teal-light);
  font-size: 13px;
  font-weight: 600;
  margin-top: 10px;
  display: inline-block;
}

/* Contact form */
.vlt-form { max-width: 640px; }

.vlt-form-row { margin-bottom: 20px; }

.vlt-form label {
  display: block;
  font-size: 13px;
  font-weight: 600;
  color: var(--vlt-navy);
  margin-bottom: 6px;
}

.vlt-form input,
.vlt-form select,
.vlt-form textarea {
  width: 100%;
  padding: 11px 16px;
  border: 1px solid var(--vlt-border);
  border-radius: var(--vlt-radius);
  font-family: var(--font-body);
  font-size: 15px;
  color: var(--vlt-text);
  background: var(--vlt-white);
  transition: border-color 0.15s;
  outline: none;
}

.vlt-form input:focus,
.vlt-form select:focus,
.vlt-form textarea:focus {
  border-color: var(--vlt-teal);
  box-shadow: 0 0 0 3px rgba(0,168,150,0.12);
}

.vlt-form textarea { min-height: 120px; resize: vertical; }

.vlt-form-submit {
  background: var(--vlt-teal);
  color: var(--vlt-white);
  border: none;
  padding: 13px 32px;
  border-radius: 7px;
  font-family: var(--font-body);
  font-size: 15px;
  font-weight: 700;
  cursor: pointer;
  transition: background 0.15s;
}
.vlt-form-submit:hover { background: var(--vlt-teal-light); }

/* ---- Footer ---- */
#vlt-footer {
  background: var(--vlt-navy);
  color: rgba(255,255,255,0.7);
  padding: 60px 24px 32px;
}

.vlt-footer-inner {
  max-width: var(--max-w);
  margin: 0 auto;
}

.vlt-footer-grid {
  display: grid;
  grid-template-columns: 220px 1fr 1fr 1fr;
  gap: 48px;
  margin-bottom: 48px;
}

.vlt-footer-brand .vlt-logo-text { color: var(--vlt-white); font-size: 20px; }
.vlt-footer-brand p {
  font-size: 13px;
  line-height: 1.65;
  color: rgba(255,255,255,0.55);
  margin-top: 12px;
}

.vlt-footer-col h4 {
  font-size: 12px;
  font-weight: 700;
  text-transform: uppercase;
  letter-spacing: 0.12em;
  color: rgba(255,255,255,0.4);
  margin-bottom: 16px;
  font-family: var(--font-mono);
}

.vlt-footer-col ul {
  list-style: none;
}

.vlt-footer-col ul li {
  margin-bottom: 8px;
}

.vlt-footer-col ul li a {
  font-size: 13px;
  color: rgba(255,255,255,0.65);
  text-decoration: none;
  transition: color 0.15s;
}

.vlt-footer-col ul li a:hover { color: var(--vlt-teal-light); text-decoration: none; }

.vlt-footer-bottom {
  border-top: 1px solid rgba(255,255,255,0.08);
  padding-top: 24px;
  display: flex;
  justify-content: space-between;
  align-items: center;
  gap: 16px;
  flex-wrap: wrap;
}

.vlt-footer-bottom-left {
  font-size: 12px;
  color: rgba(255,255,255,0.4);
}

.vlt-footer-bottom-right {
  display: flex;
  gap: 20px;
}

.vlt-footer-bottom-right a {
  font-size: 12px;
  color: rgba(255,255,255,0.4);
  text-decoration: none;
}
.vlt-footer-bottom-right a:hover { color: var(--vlt-teal-light); }

/* ---- Utility ---- */
.vlt-center { text-align: center; }
.vlt-mt-sm { margin-top: 12px; }
.vlt-mt { margin-top: 24px; }
.vlt-mt-lg { margin-top: 48px; }
.vlt-mb { margin-bottom: 24px; }

.tag-pill {
  display: inline-block;
  background: var(--vlt-teal-pale);
  color: var(--vlt-teal);
  font-size: 11px;
  font-weight: 700;
  letter-spacing: 0.08em;
  text-transform: uppercase;
  padding: 4px 12px;
  border-radius: 20px;
  border: 1px solid rgba(0,168,150,0.25);
}

/* ---- Responsive ---- */
@media (max-width: 1024px) {
  .vlt-hero-inner { grid-template-columns: 1fr; }
  .vlt-hero-card { display: none; }
  .vlt-footer-grid { grid-template-columns: 1fr 1fr; gap: 32px; }
  .vlt-cards { grid-template-columns: repeat(2, 1fr); }
  .vlt-stats-inner { grid-template-columns: repeat(2, 1fr); }
  .vlt-page-with-sidebar { grid-template-columns: 1fr; }
  .vlt-sidebar { position: static; }
}

@media (max-width: 768px) {
  :root { --nav-h: 60px; }
  #vlt-main-menu { display: none; flex-direction: column; align-items: flex-start; position: absolute; top: var(--nav-h); left: 0; right: 0; background: var(--vlt-white); border-bottom: 1px solid var(--vlt-border); padding: 16px 24px; gap: 4px; box-shadow: 0 8px 24px rgba(0,0,0,0.1); }
  #vlt-main-menu.open { display: flex; }
  #vlt-main-menu > li > a { font-size: 15px; padding: 10px 8px; }
  #vlt-main-menu .sub-menu { display: none !important; }
  .vlt-hamburger { display: flex; }
  .vlt-hero { padding: 52px 20px; }
  .vlt-section { padding: 52px 20px; }
  .vlt-cards { grid-template-columns: 1fr; }
  .vlt-stats-inner { grid-template-columns: 1fr 1fr; }
  .vlt-stat { padding: 20px 16px; }
  .vlt-two-col { grid-template-columns: 1fr; gap: 32px; }
  .vlt-cta-banner { flex-direction: column; text-align: center; padding: 32px 28px; }
  .vlt-footer-grid { grid-template-columns: 1fr; gap: 28px; }
  .vlt-footer-bottom { flex-direction: column; text-align: center; }
}