/* ================================================================
   TANVAC — Complete Design System
   Brand: Navy Blue #113797 | Gold #e8a020 | Dark #0d1018
================================================================ */
/* ================================================================
   TANVAC — index.html — Complete Design System
   Brand: Navy Blue #113797 | Gold #e8a020 | Dark #0d1018
================================================================ */

*, *::before, *::after { box-sizing: border-box; margin: 0; padding: 0; }

:root {
  --blue:        #113797;
  --blue-dark:   #0c2870;
  --blue-lt:     #1a4ab5;
  --blue-dim:    rgba(17,55,151,.15);
  --gold:        #e8a020;
  --gold-dark:   #c8891a;
  --gold-lt:     #f5c04a;
  --gold-dim:    rgba(232,160,32,.12);
  --black:       #07080d;
  --dark:        #0d1018;
  --dark2:       #121926;
  --dark3:       #1a2133;
  --gray:        #7a8fa8;
  --gray-lt:     #a0b0c8;
  --light:       #dce4f0;
  --white:       #ffffff;
  --head:        'Barlow Condensed', 'Arial Narrow', Arial, sans-serif;
  --body:        'Inter', 'Segoe UI', Arial, sans-serif;
  --max-w:       1200px;
  --r:           8px;
  --t:           .3s ease;
}

html { scroll-behavior: smooth; }

body {
  background: var(--dark);
  color: var(--light);
  font-family: var(--body);
  font-size: 16px;
  line-height: 1.7;
}

img { max-width: 100%; display: block; }
a { color: var(--gold); text-decoration: none; transition: color var(--t); }
a:hover { color: var(--gold-dark); }

h1, h2, h3, h4, h5 {
  font-family: var(--head);
  font-weight: 800;
  line-height: 1.08;
  color: var(--white);
  text-transform: uppercase;
  letter-spacing: .025em;
}

h1 { font-size: clamp(3.2rem, 7.5vw, 6rem); }
h2 { font-size: clamp(2rem, 4.5vw, 3.4rem); }
h3 { font-size: clamp(1.3rem, 2.5vw, 1.8rem); }
h4 { font-size: 1.2rem; }

p { margin-bottom: 1rem; }

.container { max-width: var(--max-w); margin: 0 auto; padding: 0 1.5rem; }
.section { padding: 6rem 0; }
.section-alt { background: var(--dark2); }

.eyebrow {
  display: inline-flex;
  align-items: center;
  gap: .55rem;
  font-family: var(--body);
  font-size: .7rem;
  font-weight: 700;
  letter-spacing: .2em;
  text-transform: uppercase;
  color: var(--gold);
  margin-bottom: 1rem;
}
.eyebrow::before {
  content: '';
  display: inline-block;
  width: 24px;
  height: 2px;
  background: var(--gold);
  border-radius: 1px;
  flex-shrink: 0;
}

.section-header { margin-bottom: 3.5rem; }
.section-header.centered { text-align: center; }
.section-header.centered .eyebrow { justify-content: center; }
.section-header p {
  color: var(--gray);
  font-size: 1.05rem;
  max-width: 600px;
  margin-top: .6rem;
  line-height: 1.75;
}
.section-header.centered p { margin-left: auto; margin-right: auto; }

/* ================================================================
   BUTTONS
================================================================ */
.btn {
  display: inline-flex;
  align-items: center;
  gap: .5rem;
  padding: .9rem 2.2rem;
  border-radius: var(--r);
  font-family: var(--body);
  font-weight: 700;
  font-size: .87rem;
  letter-spacing: .07em;
  text-transform: uppercase;
  cursor: pointer;
  transition: all var(--t);
  border: 2px solid transparent;
  white-space: nowrap;
}
.btn-gold {
  background: var(--gold);
  color: var(--black);
  border-color: var(--gold);
}
.btn-gold:hover {
  background: var(--gold-dark);
  border-color: var(--gold-dark);
  color: var(--black);
  transform: translateY(-2px);
  box-shadow: 0 8px 30px rgba(232,160,32,.4);
}
.btn-ghost {
  background: transparent;
  color: var(--white);
  border-color: rgba(255,255,255,.35);
}
.btn-ghost:hover {
  border-color: var(--white);
  background: rgba(255,255,255,.07);
  color: var(--white);
  transform: translateY(-2px);
}
.btn-blue {
  background: var(--blue);
  color: var(--white);
  border-color: var(--blue);
}
.btn-blue:hover {
  background: var(--blue-lt);
  border-color: var(--blue-lt);
  color: var(--white);
  transform: translateY(-2px);
  box-shadow: 0 8px 28px rgba(17,55,151,.45);
}

/* ================================================================
   NAVIGATION
================================================================ */
#navbar {
  position: fixed;
  top: 0; left: 0; right: 0;
  z-index: 1000;
  background: linear-gradient(to bottom, rgba(7,8,13,.72) 0%, transparent 100%);
  transition: background var(--t), box-shadow var(--t), padding var(--t);
  padding: 1.4rem 0;
}
#navbar.scrolled {
  background: rgba(13,16,24,.97);
  box-shadow: 0 2px 28px rgba(0,0,0,.7);
  backdrop-filter: blur(14px);
  -webkit-backdrop-filter: blur(14px);
  border-bottom: 1px solid rgba(232,160,32,.14);
  padding: .85rem 0;
}

.nav-inner {
  display: flex;
  align-items: center;
  gap: 2rem;
}
.nav-logo {
  margin-right: auto;
}
.nav-logo img {
  height: 48px;
  width: auto;
  transition: height var(--t);
}
.nav-logo:hover { opacity: .85; }
#navbar.scrolled .nav-logo img { height: 40px; }

.nav-links {
  display: flex;
  list-style: none;
  gap: 2rem;
  padding: 0;
  align-items: center;
}
.nav-links a {
  color: rgba(255,255,255,.88);
  font-family: var(--body);
  font-weight: 600;
  font-size: .82rem;
  letter-spacing: .09em;
  text-transform: uppercase;
  transition: color var(--t);
  position: relative;
  padding-bottom: 4px;
}
.nav-links a::after {
  content: '';
  position: absolute;
  bottom: -2px; left: 0;
  width: 0; height: 2px;
  background: var(--gold);
  border-radius: 1px;
  transition: width var(--t);
}
.nav-links a:hover,
.nav-links a.active { color: var(--gold); }
.nav-links a:hover::after,
.nav-links a.active::after { width: 100%; }

.nav-cta a {
  background: var(--gold);
  color: var(--black) !important;
  padding: .5rem 1.3rem;
  border-radius: var(--r);
  font-size: .8rem;
}
.nav-cta a::after { display: none !important; }
.nav-cta a:hover { background: var(--gold-dark) !important; color: var(--black) !important; }

.nav-phone {
  display: flex;
  align-items: center;
  gap: .45rem;
  color: rgba(255,255,255,.8);
  font-size: .82rem;
  font-weight: 600;
  letter-spacing: .04em;
  transition: color var(--t);
  white-space: nowrap;
}
.nav-phone svg { color: var(--gold); flex-shrink: 0; }
.nav-phone:hover { color: var(--gold); }

.hamburger {
  display: none;
  flex-direction: column;
  gap: 5px;
  cursor: pointer;
  padding: .45rem;
  background: none;
  border: none;
}
.hamburger span {
  display: block;
  width: 24px;
  height: 2.5px;
  background: var(--white);
  border-radius: 2px;
  transition: all var(--t);
}
.hamburger.open span:nth-child(1) { transform: rotate(45deg) translate(5px, 5.5px); }
.hamburger.open span:nth-child(2) { opacity: 0; }
.hamburger.open span:nth-child(3) { transform: rotate(-45deg) translate(5px,-5.5px); }

.nav-overlay {
  display: none;
  position: fixed; inset: 0;
  background: rgba(0,0,0,.55);
  z-index: 998;
  cursor: pointer;
  backdrop-filter: blur(2px);
  -webkit-backdrop-filter: blur(2px);
}
.nav-overlay.open { display: block; }

/* ================================================================
   HERO
================================================================ */
#hero {
  position: relative;
  height: 100vh;
  min-height: 720px;
  display: flex;
  align-items: center;
  overflow: hidden;
}

/* push hero content to the left edge of the viewport */
#hero .container {
  max-width: none;
  margin-left: 0;
  padding-left: clamp(2.5rem, 7vw, 9rem);
  padding-right: 2rem;
}

/* diagonal cut into the next section */
#hero::after {
  content: '';
  position: absolute;
  bottom: -1px; left: 0; right: 0;
  height: 130px;
  background: var(--dark);
  clip-path: polygon(0 100%, 100% 35%, 100% 100%);
  z-index: 3;
}

.hero-slides { position: absolute; inset: 0; }
.hero-slide {
  position: absolute; inset: 0;
  background-size: cover;
  background-position: center;
  opacity: 0;
  transition: opacity 1.5s ease;
}
.hero-slide.active { opacity: 1; }
.hero-slide::after {
  content: '';
  position: absolute; inset: 0;
  background:
    linear-gradient(105deg, rgba(7,8,13,.78) 0%, rgba(7,8,13,.45) 50%, rgba(7,8,13,.1) 100%),
    linear-gradient(to top, rgba(7,8,13,.65) 0%, transparent 55%);
}

.hero-content {
  position: relative;
  z-index: 2;
  max-width: 700px;
  padding-left: .5rem;
}
.hero-content::before {
  content: '';
  position: absolute;
  left: -1.5rem;
  top: 0;
  width: 3px;
  height: 100px;
  background: linear-gradient(to bottom, var(--gold), transparent);
  border-radius: 2px;
}

.hero-badge {
  display: inline-flex;
  align-items: center;
  gap: .6rem;
  background: rgba(232,160,32,.1);
  border: 1px solid rgba(232,160,32,.3);
  border-radius: 100px;
  padding: .35rem 1rem .35rem .45rem;
  margin-bottom: 1.8rem;
}
.hero-badge-dot {
  width: 8px; height: 8px;
  border-radius: 50%;
  background: var(--gold);
  animation: blink 2.2s ease-in-out infinite;
}
@keyframes blink {
  0%, 100% { opacity: 1; box-shadow: 0 0 0 0 rgba(232,160,32,.5); }
  50% { opacity: .7; box-shadow: 0 0 0 5px rgba(232,160,32,0); }
}
.hero-badge span {
  font-size: .68rem;
  font-weight: 700;
  letter-spacing: .16em;
  text-transform: uppercase;
  color: var(--gold);
}

.hero-content h1 { margin-bottom: .25rem; }
.hero-content h1 span { color: var(--gold); display: block; }

.hero-sub {
  font-size: 1.15rem;
  color: rgba(220,228,240,.8);
  max-width: 520px;
  margin: 1.4rem 0 2.4rem;
  line-height: 1.75;
}

.hero-btns { display: flex; gap: 1rem; flex-wrap: wrap; align-items: center; }

.hero-trust {
  display: flex;
  gap: 2.2rem;
  margin-top: 3.2rem;
  flex-wrap: wrap;
  padding-top: 2.2rem;
  border-top: 1px solid rgba(255,255,255,.08);
}
.hero-trust-item {
  display: flex;
  align-items: center;
  gap: .55rem;
  font-size: .8rem;
  color: rgba(220,228,240,.65);
  font-weight: 500;
  letter-spacing: .02em;
}
.trust-check {
  width: 18px; height: 18px;
  border-radius: 50%;
  border: 1.5px solid rgba(232,160,32,.5);
  display: flex; align-items: center; justify-content: center;
  flex-shrink: 0;
}
.trust-check svg { color: var(--gold); }

/* scroll indicator */
.hero-scroll-hint {
  position: absolute;
  bottom: 9rem;
  right: 2.5rem;
  z-index: 4;
  writing-mode: vertical-rl;
  font-size: .65rem;
  letter-spacing: .18em;
  text-transform: uppercase;
  color: rgba(255,255,255,.35);
  display: flex;
  align-items: center;
  gap: .5rem;
}
.hero-scroll-hint::after {
  content: '';
  display: block;
  width: 1px;
  height: 55px;
  background: linear-gradient(to bottom, rgba(232,160,32,.5), transparent);
}

.hero-dots {
  position: absolute;
  bottom: 3rem; left: 50%;
  transform: translateX(-50%);
  display: flex;
  gap: .5rem;
  z-index: 4;
}
.hero-dot {
  width: 30px; height: 3px;
  border-radius: 2px;
  background: rgba(255,255,255,.25);
  cursor: pointer;
  transition: background var(--t), width var(--t);
  border: none;
}
.hero-dot.active {
  background: var(--gold);
  width: 52px;
}

/* ================================================================
   STATS BAR
================================================================ */
.stats-bar {
  background: var(--dark2);
  border-bottom: 1px solid rgba(255,255,255,.06);
  padding: 3.5rem 0;
  position: relative;
  z-index: 2;
}
.stats-bar::before {
  content: '';
  position: absolute;
  top: 0; left: 0; right: 0;
  height: 3px;
  background: linear-gradient(to right, var(--blue), var(--gold), var(--blue));
}

.stats-grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
}
.stat-item {
  text-align: center;
  padding: 0 2rem;
  position: relative;
}
.stat-item + .stat-item::before {
  content: '';
  position: absolute;
  left: 0; top: 50%;
  transform: translateY(-50%);
  width: 1px;
  height: 55%;
  background: rgba(255,255,255,.09);
}
.stat-num {
  font-family: var(--head);
  font-size: clamp(3rem, 5vw, 4.5rem);
  font-weight: 900;
  color: var(--gold);
  line-height: 1;
  letter-spacing: -.01em;
}
.stat-label {
  font-size: .75rem;
  font-weight: 600;
  text-transform: uppercase;
  letter-spacing: .13em;
  color: var(--gray);
  margin-top: .55rem;
}

/* ================================================================
   SERVICES
================================================================ */
.services-grid {
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  gap: 1.5rem;
}
.service-card {
  background: var(--dark2);
  border: 1px solid rgba(255,255,255,.07);
  border-radius: var(--r);
  padding: 2rem 1.8rem;
  position: relative;
  overflow: hidden;
  transition: border-color var(--t), transform var(--t), box-shadow var(--t);
  cursor: default;
}
.service-card:hover {
  border-color: rgba(17,55,151,.55);
  transform: translateY(-5px);
  box-shadow: 0 20px 50px rgba(0,0,0,.45);
}
/* ghosted number watermark */
.service-card::before {
  content: attr(data-num);
  position: absolute;
  top: .8rem; right: 1rem;
  font-family: var(--head);
  font-size: 4.5rem;
  font-weight: 900;
  color: rgba(255,255,255,.03);
  line-height: 1;
  pointer-events: none;
  transition: color var(--t);
}
.service-card:hover::before { color: rgba(17,55,151,.09); }

.svc-icon {
  width: 50px; height: 50px;
  border-radius: 12px;
  background: var(--blue-dim);
  border: 1px solid rgba(17,55,151,.3);
  display: flex; align-items: center; justify-content: center;
  margin-bottom: 1.3rem;
  transition: background var(--t), border-color var(--t);
}
.service-card:hover .svc-icon {
  background: rgba(17,55,151,.28);
  border-color: rgba(17,55,151,.6);
}
.svc-icon svg { color: var(--blue-lt); }
.svc-icon-img {
  width: 28px;
  height: 28px;
  object-fit: contain;
  /* converts any icon color → brand blue-light */
  filter: invert(42%) sepia(93%) saturate(400%) hue-rotate(195deg) brightness(110%);
  transition: filter var(--t);
}
.service-card:hover .svc-icon-img {
  filter: invert(42%) sepia(93%) saturate(600%) hue-rotate(195deg) brightness(125%);
}

.svc-num {
  font-size: .6rem;
  font-weight: 700;
  letter-spacing: .22em;
  text-transform: uppercase;
  color: var(--gold);
  opacity: .8;
  margin-bottom: .45rem;
}
.service-card h3 {
  font-size: 1.1rem;
  margin-bottom: .55rem;
  line-height: 1.2;
}
.svc-desc {
  font-size: .86rem;
  color: var(--gray);
  line-height: 1.65;
  margin-bottom: 1.3rem;
}
.svc-link {
  display: inline-flex;
  align-items: center;
  gap: .4rem;
  font-size: .75rem;
  font-weight: 700;
  letter-spacing: .09em;
  text-transform: uppercase;
  color: var(--gold);
  transition: gap var(--t), color var(--t);
}
.svc-link:hover { gap: .65rem; color: var(--gold-lt); }

/* ================================================================
   DIVIDER STRIP
================================================================ */
.strip {
  background: linear-gradient(135deg, var(--blue-dark) 0%, var(--blue) 100%);
  padding: 3rem 0;
  border-top: 1px solid rgba(232,160,32,.18);
  border-bottom: 1px solid rgba(232,160,32,.18);
  position: relative;
  overflow: hidden;
}
.strip::before {
  content: '';
  position: absolute; inset: 0;
  background-image: url("data:image/svg+xml,%3Csvg width='40' height='40' viewBox='0 0 40 40' xmlns='http://www.w3.org/2000/svg'%3E%3Cg fill='none' fill-rule='evenodd'%3E%3Cg fill='%23ffffff' fill-opacity='0.04'%3E%3Cpath d='M0 40L40 0H20L0 20M40 40V20L20 40'/%3E%3C/g%3E%3C/g%3E%3C/svg%3E");
}
.strip-inner {
  position: relative;
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 2rem;
  flex-wrap: wrap;
}
.strip-headline {
  font-family: var(--head);
  font-size: clamp(1.5rem, 3.5vw, 2.4rem);
  font-weight: 800;
  color: var(--white);
  text-transform: uppercase;
  letter-spacing: .03em;
  line-height: 1.1;
}
.strip-headline em {
  font-style: normal;
  color: var(--gold);
}

/* ================================================================
   WHY TANVAC
================================================================ */
.why-grid {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 5rem;
  align-items: center;
}

.why-list {
  list-style: none;
  padding: 0;
  margin: 2rem 0 2.5rem;
}
.why-item {
  display: flex;
  gap: 1.1rem;
  align-items: flex-start;
  padding: 1.1rem 0;
  border-bottom: 1px solid rgba(255,255,255,.06);
  transition: padding-left var(--t);
}
.why-item:last-child { border-bottom: none; }
.why-item:hover { padding-left: .4rem; }
.why-icon {
  width: 40px; height: 40px;
  border-radius: 10px;
  background: var(--gold-dim);
  border: 1px solid rgba(232,160,32,.2);
  display: flex; align-items: center; justify-content: center;
  flex-shrink: 0;
  transition: background var(--t), border-color var(--t);
}
.why-item:hover .why-icon {
  background: rgba(232,160,32,.2);
  border-color: rgba(232,160,32,.4);
}
.why-icon svg { color: var(--gold); }
.why-item-body strong {
  display: block;
  color: var(--white);
  font-weight: 600;
  font-size: .98rem;
  margin-bottom: .18rem;
}
.why-item-body span { color: var(--gray); font-size: .88rem; }

.why-visual {
  position: relative;
}
.why-visual img {
  width: 100%;
  height: 540px;
  object-fit: cover;
  border-radius: var(--r);
  display: block;
}
.why-visual::before {
  content: '';
  position: absolute;
  inset: -14px;
  border: 2px solid rgba(232,160,32,.2);
  border-radius: calc(var(--r) + 6px);
  z-index: -1;
}
.why-badge {
  position: absolute;
  bottom: -22px;
  left: -22px;
  background: var(--gold);
  color: var(--black);
  border-radius: var(--r);
  padding: 1.3rem 1.6rem;
  box-shadow: 0 14px 44px rgba(232,160,32,.45);
}
.why-badge-num {
  font-family: var(--head);
  font-size: 2.6rem;
  font-weight: 900;
  line-height: 1;
  letter-spacing: -.02em;
}
.why-badge-lbl {
  font-size: .68rem;
  font-weight: 700;
  letter-spacing: .1em;
  text-transform: uppercase;
  opacity: .7;
  margin-top: .2rem;
}
.why-cert {
  position: absolute;
  top: -18px;
  right: -18px;
  background: var(--dark2);
  border: 1px solid rgba(255,255,255,.1);
  border-radius: var(--r);
  padding: .9rem 1.2rem;
  display: flex;
  align-items: center;
  gap: .7rem;
}
.why-cert svg { color: var(--blue-lt); }
.why-cert-text strong { display: block; color: var(--white); font-size: .85rem; font-weight: 700; }
.why-cert-text span { color: var(--gray); font-size: .72rem; }

/* ================================================================
   PROCESS
================================================================ */
.process-grid {
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  gap: 1.5rem;
  position: relative;
}
.process-grid::before {
  content: '';
  position: absolute;
  top: 27px;
  left: 12.5%;
  width: 75%;
  height: 2px;
  background: linear-gradient(to right, var(--blue), var(--gold));
  z-index: 0;
}
.process-step {
  text-align: center;
  position: relative;
  z-index: 1;
}
.process-num {
  width: 54px; height: 54px;
  border-radius: 50%;
  background: var(--dark2);
  border: 2px solid var(--blue);
  display: flex; align-items: center; justify-content: center;
  font-family: var(--head);
  font-size: 1.25rem;
  font-weight: 800;
  color: var(--white);
  margin: 0 auto 1.4rem;
  transition: background var(--t), border-color var(--t), box-shadow var(--t);
}
.process-step:hover .process-num {
  background: var(--blue);
  border-color: var(--gold);
  box-shadow: 0 0 0 4px rgba(232,160,32,.15);
}
.process-step h4 {
  font-family: var(--head);
  font-size: 1.1rem;
  text-transform: uppercase;
  letter-spacing: .06em;
  margin-bottom: .5rem;
}
.process-step p { color: var(--gray); font-size: .87rem; }

/* ================================================================
   INDUSTRIES WE SERVE
================================================================ */
.industries-grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 1.5rem;
}
.industry-card {
  background: var(--dark2);
  border: 1px solid rgba(255,255,255,.07);
  border-radius: var(--r);
  padding: 2.2rem;
  transition: border-color var(--t), transform var(--t), box-shadow var(--t);
  cursor: default;
}
.industry-card:hover {
  border-color: rgba(17,55,151,.6);
  transform: translateY(-5px);
  box-shadow: 0 16px 40px rgba(0,0,0,.4);
}
.industry-icon {
  width: 56px; height: 56px;
  border-radius: 14px;
  background: var(--blue-dim);
  border: 1px solid rgba(17,55,151,.35);
  display: flex; align-items: center; justify-content: center;
  margin-bottom: 1.4rem;
  transition: background var(--t), border-color var(--t);
}
.industry-card:hover .industry-icon {
  background: rgba(17,55,151,.28);
  border-color: rgba(17,55,151,.6);
}
.industry-icon svg { color: var(--blue-lt); }
.industry-card h4 {
  font-family: var(--head);
  font-size: 1.25rem;
  text-transform: uppercase;
  letter-spacing: .05em;
  margin-bottom: .6rem;
}
.industry-card p { color: var(--gray); font-size: .9rem; margin: 0; line-height: 1.65; }

/* ================================================================
   TESTIMONIALS
================================================================ */
.testimonials-grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 1.5rem;
}
.testimonial {
  background: var(--dark2);
  border: 1px solid rgba(255,255,255,.07);
  border-radius: var(--r);
  padding: 2rem;
  transition: border-color var(--t), transform var(--t);
  cursor: default;
}
.testimonial:hover {
  border-color: rgba(232,160,32,.2);
  transform: translateY(-3px);
}
.stars {
  color: var(--gold);
  font-size: .95rem;
  letter-spacing: .1em;
  margin-bottom: .9rem;
}
.testimonial-body {
  color: rgba(220,228,240,.78);
  font-style: italic;
  font-size: .92rem;
  line-height: 1.75;
  margin-bottom: 1.6rem;
  position: relative;
  padding-top: 1.5rem;
}
.testimonial-body::before {
  content: '\201C';
  font-family: Georgia, serif;
  font-size: 3.5rem;
  line-height: 1;
  color: var(--blue);
  position: absolute;
  top: -1rem; left: -.3rem;
  opacity: .9;
}
.testimonial-author {
  display: flex;
  align-items: center;
  gap: .85rem;
  border-top: 1px solid rgba(255,255,255,.06);
  padding-top: 1.2rem;
}
.author-avatar {
  width: 38px; height: 38px;
  border-radius: 50%;
  background: linear-gradient(135deg, var(--blue), var(--blue-lt));
  display: flex; align-items: center; justify-content: center;
  font-family: var(--head);
  font-size: 1rem;
  font-weight: 800;
  color: var(--white);
  flex-shrink: 0;
}
.author-name {
  display: block;
  color: var(--white);
  font-weight: 600;
  font-size: .88rem;
}
.author-title { color: var(--gold); font-size: .75rem; }

/* ================================================================
   CTA BANNER
================================================================ */
.cta-banner {
  position: relative;
  background: linear-gradient(135deg, var(--blue-dark) 0%, #0e2265 55%, var(--blue) 100%);
  padding: 7rem 0;
  text-align: center;
  overflow: hidden;
}
.cta-banner::before {
  content: '';
  position: absolute; inset: 0;
  background-image: url("data:image/svg+xml,%3Csvg width='60' height='60' viewBox='0 0 60 60' xmlns='http://www.w3.org/2000/svg'%3E%3Cg fill='none' fill-rule='evenodd'%3E%3Cg fill='%23ffffff' fill-opacity='0.03'%3E%3Cpath d='M36 34v-4h-2v4h-4v2h4v4h2v-4h4v-2h-4zm0-30V0h-2v4h-4v2h4v4h2V6h4V4h-4zM6 34v-4H4v4H0v2h4v4h2v-4h4v-2H6zM6 4V0H4v4H0v2h4v4h2V6h4V4H6z'/%3E%3C/g%3E%3C/g%3E%3C/svg%3E");
}
/* large watermark text */
.cta-banner::after {
  content: 'TANVAC';
  position: absolute;
  top: 50%; left: 50%;
  transform: translate(-50%, -50%);
  font-family: var(--head);
  font-size: clamp(8rem, 22vw, 20rem);
  font-weight: 900;
  color: rgba(255,255,255,.025);
  white-space: nowrap;
  pointer-events: none;
  letter-spacing: .08em;
}
.cta-banner .container { position: relative; z-index: 2; }
.cta-banner .eyebrow { justify-content: center; }

.cta-phone {
  display: block;
  font-family: var(--head);
  font-size: clamp(2.4rem, 6vw, 4.2rem);
  font-weight: 900;
  color: var(--gold);
  line-height: 1;
  margin: .75rem 0 1.5rem;
  letter-spacing: .05em;
  transition: color var(--t);
}
.cta-phone:hover { color: var(--gold-lt); }

.cta-banner h2 { font-size: clamp(1.6rem, 3.5vw, 2.6rem); margin-bottom: .8rem; }
.cta-banner p {
  color: rgba(255,255,255,.72);
  max-width: 500px;
  margin: 0 auto 2.5rem;
  font-size: 1.05rem;
}
.cta-btns { display: flex; gap: 1rem; justify-content: center; flex-wrap: wrap; }

/* ================================================================
   FOOTER
================================================================ */
#footer {
  background: #080c14;
  border-top: 1px solid rgba(255,255,255,.06);
  padding: 4.5rem 0 2rem;
}
.footer-grid {
  display: grid;
  grid-template-columns: 2fr 1fr 1fr 1fr;
  gap: 3rem;
  margin-bottom: 3.5rem;
}
.footer-logo img { height: 46px; margin-bottom: 1.2rem; }
.footer-desc { color: var(--gray); font-size: .88rem; max-width: 270px; line-height: 1.75; }

.footer-socials { display: flex; gap: .6rem; margin-top: 1.4rem; }
.footer-social {
  width: 36px; height: 36px;
  border-radius: 50%;
  background: rgba(255,255,255,.06);
  border: 1px solid rgba(255,255,255,.09);
  display: flex; align-items: center; justify-content: center;
  color: var(--gray);
  font-size: .82rem;
  font-weight: 700;
  transition: all var(--t);
}
.footer-social:hover { background: var(--gold); color: var(--black); border-color: var(--gold); }

.footer-col h5 {
  font-family: var(--head);
  font-size: .68rem;
  text-transform: uppercase;
  letter-spacing: .2em;
  color: var(--gold);
  margin-bottom: 1.3rem;
}
.footer-links { list-style: none; padding: 0; }
.footer-links li { margin-bottom: .65rem; }
.footer-links a { color: var(--gray); font-size: .88rem; transition: color var(--t); }
.footer-links a:hover { color: var(--white); }

.footer-contact-item {
  display: flex;
  gap: .75rem;
  align-items: flex-start;
  color: var(--gray);
  font-size: .88rem;
  margin-bottom: .85rem;
}
.footer-contact-item strong { color: var(--white); }
.footer-contact-icon { color: var(--gold); min-width: 14px; margin-top: .15rem; flex-shrink: 0; }

.footer-bottom {
  border-top: 1px solid rgba(255,255,255,.06);
  padding-top: 1.8rem;
  display: flex;
  justify-content: space-between;
  align-items: center;
  flex-wrap: wrap;
  gap: 1rem;
}
.footer-bottom p { color: rgba(122,143,168,.55); font-size: .82rem; margin: 0; }
.footer-bottom a { color: var(--gray); }
.footer-bottom a:hover { color: var(--gold); }

/* ================================================================
   UTILITIES
================================================================ */
.text-center { text-align: center; }
.text-gold { color: var(--gold); }
.mt-1 { margin-top: .5rem; }
.mt-2 { margin-top: 1rem; }
.mt-3 { margin-top: 1.5rem; }
.mt-4 { margin-top: 2.5rem; }

/* ================================================================
   RESPONSIVE
================================================================ */
@media (max-width: 1024px) {
  .why-grid { grid-template-columns: 1fr; gap: 3rem; }
  .why-visual { display: none; }
  .services-grid { grid-template-columns: repeat(2, 1fr); }
  .industries-grid { grid-template-columns: repeat(2, 1fr); }
  .footer-grid { grid-template-columns: 1fr 1fr; gap: 2.5rem; }
}

@media (max-width: 768px) {
  .section { padding: 4rem 0; }
  #hero::after { height: 80px; }
  .nav-phone { display: none; }
  .hamburger { display: flex; }

  #hero {
        align-items: flex-start;
        padding-top: 130px;
        min-height: 120vh;
        height: auto;
    }

  #navbar {
        padding: 0.9rem 0;
    }

  .nav-links {
    position: fixed;
    top: 0; right: 0;
    width: 290px; height: 100vh;
    background: rgba(13,16,24,.99);
    flex-direction: column;
    justify-content: center;
    gap: 1.6rem;
    transform: translateX(100%);
    transition: transform var(--t);
    padding: 2rem;
    z-index: 999;
    border-left: 1px solid rgba(232,160,32,.14);
    display: flex;
  }
  .nav-links.open { transform: translateX(0); }
  .nav-links a { font-size: .95rem; }

  .stats-grid { grid-template-columns: repeat(2, 1fr); gap: 1.5rem; }
  .stat-item + .stat-item::before { display: none; }
  .services-grid { grid-template-columns: repeat(2, 1fr); }
  .process-grid { grid-template-columns: repeat(2, 1fr); }
  .process-grid::before { display: none; }
  .testimonials-grid { grid-template-columns: 1fr; }
  .industries-grid { grid-template-columns: 1fr; }
  .footer-grid { grid-template-columns: 1fr; }
  .strip-inner { flex-direction: column; text-align: center; }
  .hero-scroll-hint { display: none; }
  .hero-content::before { display: none; }
}

@media (max-width: 480px) {
  h1 { font-size: clamp(2.6rem, 11vw, 3.8rem); }
  .hero-btns { flex-direction: column; }
  .btn { width: 100%; justify-content: center; }
  .hero-trust { gap: 1.2rem; }
  .stats-grid { grid-template-columns: repeat(2, 1fr); }
  .process-grid { grid-template-columns: 1fr; }
  .footer-bottom { flex-direction: column; text-align: center; }
  .cta-btns { flex-direction: column; align-items: center; }
  .cta-btns .btn { width: 100%; max-width: 300px; }
}

@media (prefers-reduced-motion: reduce) {
  *, *::before, *::after { animation-duration: .01ms !important; transition-duration: .01ms !important; }
}

/* ================================================================
   INNER PAGES — Shared Utilities
================================================================ */

.sr-only {
  position: absolute;
  width: 1px; height: 1px;
  padding: 0; margin: -1px;
  overflow: hidden;
  clip: rect(0,0,0,0);
  white-space: nowrap;
  border: 0;
}

/* .tag — inline badge used on all inner pages */
.tag {
  display: inline-block;
  font-size: .65rem;
  font-weight: 700;
  letter-spacing: .22em;
  text-transform: uppercase;
  color: var(--gold);
  margin-bottom: .85rem;
}

/* Divider accent line */
.divider {
  width: 48px;
  height: 3px;
  background: linear-gradient(to right, var(--gold), transparent);
  border-radius: 2px;
  margin-top: 1.2rem;
}

/* .btn-primary — alias for the gold filled button */
.btn-primary {
  display: inline-flex;
  align-items: center;
  gap: .5rem;
  padding: .9rem 2.2rem;
  border-radius: var(--r);
  font-family: var(--body);
  font-weight: 700;
  font-size: .87rem;
  letter-spacing: .07em;
  text-transform: uppercase;
  cursor: pointer;
  transition: all var(--t);
  border: 2px solid var(--gold);
  background: var(--gold);
  color: var(--black);
  white-space: nowrap;
  text-decoration: none;
}
.btn-primary:hover {
  background: var(--gold-dark);
  border-color: var(--gold-dark);
  color: var(--black);
  transform: translateY(-2px);
  box-shadow: 0 8px 30px rgba(232,160,32,.4);
}

/* ================================================================
   PAGE HERO (about / services / contact)
================================================================ */
.page-hero {
  background: var(--hero-bg, none) center / cover no-repeat;
  background-color: var(--dark2);
  border-bottom: 1px solid rgba(255,255,255,.07);
  padding: 9rem 0 4rem;
  position: relative;
  overflow: hidden;
}
.page-hero::before {
  content: '';
  position: absolute; inset: 0;
  background: linear-gradient(105deg, rgba(7,8,13,.92) 0%, rgba(7,8,13,.65) 100%);
}
.page-hero .container { position: relative; z-index: 2; }
.page-hero h1 { font-size: clamp(2.4rem, 5.5vw, 4rem); margin-bottom: .6rem; }
.page-hero > .container > p {
  color: var(--gray-lt);
  font-size: 1.05rem;
  max-width: 600px;
  line-height: 1.7;
  margin: 0;
}

/* Breadcrumb */
.breadcrumb {
  display: flex;
  align-items: center;
  gap: .5rem;
  font-size: .75rem;
  font-weight: 600;
  letter-spacing: .07em;
  text-transform: uppercase;
  color: var(--gray);
  margin-bottom: 1.4rem;
}
.breadcrumb a { color: var(--gray); transition: color var(--t); }
.breadcrumb a:hover { color: var(--gold); }
.breadcrumb span:last-child { color: var(--gold); }

/* ================================================================
   ABOUT PAGE
================================================================ */
.about-intro {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 4rem;
  align-items: center;
}
.about-intro img {
  width: 100%;
  height: 480px;
  object-fit: cover;
  border-radius: var(--r);
}
.about-intro h2 { margin-bottom: 1.2rem; }

.values-grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 1.5rem;
}
.value-card {
  background: var(--dark3);
  border: 1px solid rgba(255,255,255,.07);
  border-radius: var(--r);
  padding: 2rem 1.8rem;
  transition: border-color var(--t), transform var(--t), box-shadow var(--t);
}
.value-card:hover {
  border-color: rgba(232,160,32,.25);
  transform: translateY(-4px);
  box-shadow: 0 16px 40px rgba(0,0,0,.35);
}
.value-icon {
  font-size: 2rem;
  margin-bottom: 1rem;
  line-height: 1;
}
.value-card h4 {
  font-family: var(--head);
  font-size: 1.15rem;
  text-transform: uppercase;
  letter-spacing: .05em;
  margin-bottom: .6rem;
}
.value-card p { color: var(--gray); font-size: .88rem; line-height: 1.7; margin: 0; }

/* Image-based service cards (industries grid on about.html) */
.service-card-img {
  height: 200px;
  background-size: cover;
  background-position: center;
  margin: -2rem -1.8rem 1.5rem;
  border-radius: var(--r) var(--r) 0 0;
}
.service-card-body h3 { margin-bottom: .5rem; }
.service-card-body p { color: var(--gray); font-size: .9rem; line-height: 1.65; margin: 0; }

/* ================================================================
   SERVICES PAGE
================================================================ */
.service-detail {
  display: grid;
  grid-template-columns: .9fr 1.1fr;
  gap: 4rem;
  align-items: center;
  padding: 2.5rem 0;
  border-bottom: 1px solid rgba(255,255,255,.06);
}
.service-detail:last-of-type { border-bottom: none; }

.service-detail-intro h2 { margin-bottom: 1rem; }
.service-detail-intro p { color: var(--gray); }
.service-detail-intro p + p { margin-top: .8rem; }

.service-bullets {
  list-style: none;
  padding: 0;
  margin: 0;
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 0 2rem;
}
.service-bullets li {
  display: flex;
  align-items: flex-start;
  gap: .65rem;
  padding: .45rem 0;
  color: var(--gray-lt);
  font-size: .92rem;
  border-bottom: 1px solid rgba(255,255,255,.05);
}
.service-bullets li::before {
  content: '✓';
  color: var(--gold);
  font-weight: 700;
  flex-shrink: 0;
  margin-top: .05rem;
}

/* ================================================================
   CONTACT PAGE
================================================================ */
.contact-grid {
  display: grid;
  grid-template-columns: 1fr 1.5fr;
  gap: 4rem;
  align-items: flex-start;
}

.contact-info-card {
  background: var(--dark2);
  border: 1px solid rgba(255,255,255,.07);
  border-radius: var(--r);
  padding: 1.5rem;
  margin-bottom: 1rem;
}
.contact-info-card h4 {
  font-family: var(--head);
  font-size: 1rem;
  text-transform: uppercase;
  letter-spacing: .07em;
  color: var(--gold);
  margin-bottom: .5rem;
}
.contact-info-card p { color: var(--gray-lt); font-size: .92rem; margin: 0; }
.contact-info-card a { color: var(--white); font-weight: 600; }
.contact-info-card a:hover { color: var(--gold); }

.contact-form-wrap {
  background: var(--dark2);
  border: 1px solid rgba(255,255,255,.08);
  border-radius: var(--r);
  padding: 2.5rem;
}
.contact-form-wrap h3 { margin-bottom: .4rem; }

.form-group { margin-bottom: 1.2rem; }
.form-group label {
  display: block;
  font-size: .8rem;
  font-weight: 600;
  letter-spacing: .06em;
  text-transform: uppercase;
  color: var(--light);
  margin-bottom: .45rem;
}
.form-group input,
.form-group select,
.form-group textarea {
  width: 100%;
  background: var(--dark3);
  border: 1px solid rgba(255,255,255,.12);
  border-radius: 6px;
  padding: .75rem 1rem;
  color: var(--white);
  font-family: var(--body);
  font-size: .9rem;
  transition: border-color var(--t), box-shadow var(--t);
  outline: none;
  appearance: none;
  -webkit-appearance: none;
}
.form-group input:focus,
.form-group select:focus,
.form-group textarea:focus {
  border-color: var(--gold);
  box-shadow: 0 0 0 3px rgba(232,160,32,.1);
}
.form-group select {
  background-image: url("data:image/svg+xml,%3Csvg xmlns='http://www.w3.org/2000/svg' width='12' height='8' viewBox='0 0 12 8'%3E%3Cpath fill='%237a8fa8' d='M1 1l5 5 5-5'/%3E%3C/svg%3E");
  background-repeat: no-repeat;
  background-position: right 1rem center;
  padding-right: 2.5rem;
  cursor: pointer;
}
.form-group textarea { min-height: 130px; resize: vertical; line-height: 1.6; }
.form-group input::placeholder,
.form-group textarea::placeholder { color: var(--gray); }

.form-row {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 1rem;
}
.form-submit { margin-top: 1.5rem; }

/* ================================================================
   INNER PAGE RESPONSIVE
================================================================ */
@media (max-width: 1024px) {
  .about-intro { grid-template-columns: 1fr; }
  .values-grid { grid-template-columns: repeat(2, 1fr); }
  .contact-grid { grid-template-columns: 1fr; }
}

@media (max-width: 768px) {
  .page-hero { padding: 7rem 0 3rem; }
  .about-intro img { height: 320px; }
  .service-detail {
    grid-template-columns: 1fr;
    gap: 1.5rem;
  }
  .service-bullets { grid-template-columns: 1fr; }
  .form-row { grid-template-columns: 1fr; }
  .contact-form-wrap { padding: 1.5rem; }
}

@media (max-width: 480px) {
  .values-grid { grid-template-columns: 1fr; }
  .contact-form-wrap { padding: 1.2rem; }
}