/* ============================================================
   HATTAK Engineering Website – Main Stylesheet
   Design: Professional engineering, dark blue / white / grey
   Author: HATTAK
   ============================================================ */

/* ---- Google Fonts ----------------------------------------- */
@import url('https://fonts.googleapis.com/css2?family=Inter:wght@300;400;500;600;700;800&family=Outfit:wght@300;400;600;700;800&display=swap');

/* ---- CSS Custom Properties --------------------------------- */
:root {
  /* Colour palette */
  --clr-primary:       #0A1628;   /* deep navy */
  --clr-primary-mid:   #0D1F3C;   /* dark navy */
  --clr-accent:        #1565C0;   /* engineering blue */
  --clr-accent-light:  #1E88E5;   /* lighter blue */
  --clr-accent-vivid:  #2196F3;   /* vibrant blue */
  --clr-teal:          #00838F;   /* technical teal */
  --clr-gold:          #B8922A;   /* precision gold */
  --clr-white:         #FFFFFF;
  --clr-offwhite:      #F4F6F9;
  --clr-grey-100:      #E8ECF1;
  --clr-grey-200:      #C9D3DE;
  --clr-grey-300:      #9AAAB8;
  --clr-grey-400:      #6B7D8F;
  --clr-grey-500:      #455A6B;
  --clr-grey-600:      #2E3F50;
  --clr-dark:          #111927;

  /* Typography */
  --font-primary: 'Inter', system-ui, -apple-system, sans-serif;
  --font-display: 'Outfit', system-ui, -apple-system, sans-serif;

  /* Spacing */
  --space-xs:  0.25rem;
  --space-sm:  0.5rem;
  --space-md:  1rem;
  --space-lg:  1.5rem;
  --space-xl:  2.5rem;
  --space-2xl: 4rem;
  --space-3xl: 6rem;
  --space-4xl: 8rem;

  /* Layout */
  --max-width: 1280px;
  --nav-height: 76px;

  /* Shadows */
  --shadow-sm: 0 1px 3px rgba(0,0,0,0.15), 0 1px 2px rgba(0,0,0,0.10);
  --shadow-md: 0 4px 16px rgba(0,0,0,0.12), 0 2px 6px rgba(0,0,0,0.08);
  --shadow-lg: 0 12px 40px rgba(0,0,0,0.18), 0 4px 12px rgba(0,0,0,0.10);
  --shadow-xl: 0 24px 64px rgba(0,0,0,0.24);

  /* Borders */
  --radius-sm: 4px;
  --radius-md: 8px;
  --radius-lg: 16px;
  --radius-xl: 24px;

  /* Transitions */
  --transition-fast: 150ms ease;
  --transition-med:  300ms ease;
  --transition-slow: 500ms ease;
}

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

html {
  scroll-behavior: smooth;
  font-size: 16px;
  -webkit-text-size-adjust: 100%;
}

body {
  font-family: var(--font-primary);
  background: var(--clr-white);
  color: var(--clr-grey-600);
  line-height: 1.7;
  -webkit-font-smoothing: antialiased;
  overflow-x: hidden;
  animation: page-enter 0.6s ease-out;
}

@keyframes page-enter {
  from { opacity: 0; transform: translateY(8px); }
  to   { opacity: 1; transform: translateY(0); }
}

/* ---- Focus states (accessibility) ------------------------- */
:focus-visible {
  outline: 2px solid var(--clr-accent-vivid);
  outline-offset: 3px;
  border-radius: 2px;
}

img { display: block; max-width: 100%; height: auto; }
a { color: inherit; text-decoration: none; }
ul, ol { list-style: none; }
button { cursor: pointer; border: none; background: none; font-family: inherit; }

/* ---- Typography ------------------------------------------- */
h1, h2, h3, h4, h5, h6 {
  font-family: var(--font-display);
  font-weight: 700;
  line-height: 1.2;
  color: var(--clr-primary);
}
h1 { font-size: clamp(2rem, 4.5vw, 3.5rem); }
h2 { font-size: clamp(1.6rem, 3vw, 2.5rem); }
h3 { font-size: clamp(1.2rem, 2vw, 1.6rem); }
h4 { font-size: 1.1rem; }
p  { font-size: 1rem; color: var(--clr-grey-400); }

.text-white { color: var(--clr-white) !important; }
.text-light { color: var(--clr-grey-200) !important; }
.text-accent { color: var(--clr-accent-vivid) !important; }

/* ---- Layout Utilities ------------------------------------- */
.container {
  width: 100%;
  max-width: var(--max-width);
  margin-inline: auto;
  padding-inline: clamp(1rem, 4vw, 2rem);
}

.section {
  padding-block: var(--space-3xl);
}

.section--dark {
  background: var(--clr-primary);
}

.section--mid {
  background: var(--clr-primary-mid);
}

.section--off {
  background: var(--clr-offwhite);
}

.section--grey {
  background: var(--clr-grey-100);
}

.grid { display: grid; gap: var(--space-xl); }
.grid-2 { grid-template-columns: repeat(2, 1fr); }
.grid-3 { grid-template-columns: repeat(3, 1fr); }
.grid-4 { grid-template-columns: repeat(4, 1fr); }

.flex { display: flex; }
.flex-center { display: flex; align-items: center; justify-content: center; }
.flex-between { display: flex; align-items: center; justify-content: space-between; }

/* ---- Section Headings ------------------------------------- */
.section-label {
  display: inline-block;
  font-family: var(--font-primary);
  font-size: 0.75rem;
  font-weight: 600;
  letter-spacing: 0.15em;
  text-transform: uppercase;
  color: var(--clr-accent-vivid);
  margin-bottom: var(--space-sm);
}

.section-title {
  margin-bottom: var(--space-md);
}

.section-subtitle {
  font-size: 1.05rem;
  color: var(--clr-grey-400);
  max-width: 640px;
  line-height: 1.8;
}

.section-header {
  margin-bottom: var(--space-2xl);
}

.section-header--center {
  text-align: center;
}
.section-header--center .section-subtitle {
  margin-inline: auto;
}

/* ---- Divider line ----------------------------------------- */
.divider {
  display: block;
  width: 48px;
  height: 3px;
  background: linear-gradient(90deg, var(--clr-accent), var(--clr-teal));
  border-radius: 2px;
  margin-bottom: var(--space-lg);
}
.section-header--center .divider {
  margin-inline: auto;
}

/* ---- Buttons ---------------------------------------------- */
.btn {
  display: inline-flex;
  align-items: center;
  gap: var(--space-sm);
  padding: 0.75rem 1.75rem;
  font-family: var(--font-primary);
  font-size: 0.9rem;
  font-weight: 600;
  letter-spacing: 0.02em;
  border-radius: var(--radius-sm);
  transition: all var(--transition-med);
  position: relative;
  overflow: hidden;
  white-space: nowrap;
}

.btn::before {
  content: '';
  position: absolute;
  inset: 0;
  background: rgba(255,255,255,0.08);
  opacity: 0;
  transition: opacity var(--transition-fast);
}
.btn:hover::before { opacity: 1; }

.btn-primary {
  background: linear-gradient(135deg, var(--clr-accent), var(--clr-accent-light));
  color: var(--clr-white);
  box-shadow: 0 4px 16px rgba(21, 101, 192, 0.35);
}
.btn-primary:hover {
  transform: translateY(-2px) scale(1.02);
  box-shadow: 0 8px 28px rgba(21, 101, 192, 0.5), 0 0 0 1px rgba(33,150,243,0.2);
}

.btn-outline {
  border: 1.5px solid rgba(255,255,255,0.4);
  color: var(--clr-white);
  background: rgba(255,255,255,0.06);
  backdrop-filter: blur(8px);
}
.btn-outline:hover {
  border-color: rgba(255,255,255,0.7);
  background: rgba(255,255,255,0.12);
  transform: translateY(-2px);
}

.btn-outline-blue {
  border: 1.5px solid var(--clr-accent);
  color: var(--clr-accent);
  background: transparent;
}
.btn-outline-blue:hover {
  background: var(--clr-accent);
  color: var(--clr-white);
  transform: translateY(-2px);
}

.btn-ghost {
  color: var(--clr-accent-vivid);
  padding: 0;
  font-weight: 600;
  font-size: 0.9rem;
  gap: var(--space-xs);
}
.btn-ghost::after {
  content: '→';
  transition: transform var(--transition-fast);
}
.btn-ghost:hover::after { transform: translateX(4px); }
.btn-ghost::before { display: none; }

/* ---- Navigation ------------------------------------------- */
#navbar {
  position: fixed;
  top: 0;
  left: 0;
  right: 0;
  z-index: 1000;
  height: var(--nav-height);
  display: flex;
  align-items: center;
  transition: background var(--transition-med), box-shadow var(--transition-med);
  background: transparent;
}

#navbar.scrolled {
  background: rgba(10, 22, 40, 0.97);
  backdrop-filter: blur(24px) saturate(1.4);
  box-shadow: 0 1px 0 rgba(255,255,255,0.05), 0 4px 24px rgba(0,0,0,0.3);
  border-bottom: 1px solid rgba(21,101,192,0.15);
}

.nav-inner {
  display: flex;
  align-items: center;
  justify-content: space-between;
  width: 100%;
  max-width: var(--max-width);
  margin-inline: auto;
  padding-inline: clamp(1rem, 4vw, 2rem);
}

.nav-logo {
  display: flex;
  align-items: center;
  gap: 0.6rem;
  flex-shrink: 0;
}

.nav-logo-img {
  height: 36px;
  width: auto;
}

.nav-logo-text {
  font-family: var(--font-display);
  font-size: 1.65rem;
  font-weight: 800;
  color: var(--clr-white);
  letter-spacing: 0.14em;
  text-transform: uppercase;
  line-height: 1;
  white-space: nowrap;
}

.footer-logo-text {
  font-family: var(--font-display);
  font-size: 1.8rem;
  font-weight: 800;
  color: var(--clr-white);
  letter-spacing: 0.14em;
  text-transform: uppercase;
  line-height: 1;
  display: inline-block;
}

/* ---- Dropdown nav --------------------------------------- */
.nav-item {
  position: relative;
}
.nav-item:hover .nav-dropdown {
  opacity: 1;
  pointer-events: all;
  transform: translateY(0);
}
.nav-dropdown {
  position: absolute;
  top: calc(100% + 12px);
  left: 50%;
  transform: translateX(-50%) translateY(8px);
  background: rgba(10, 22, 40, 0.98);
  backdrop-filter: blur(20px);
  border: 1px solid rgba(255,255,255,0.08);
  border-radius: var(--radius-md);
  min-width: 220px;
  padding: 0.5rem 0;
  opacity: 0;
  pointer-events: none;
  transition: opacity var(--transition-med), transform var(--transition-med);
  z-index: 100;
  box-shadow: var(--shadow-xl);
}
.nav-dropdown::before {
  content: '';
  position: absolute;
  top: -6px;
  left: 50%;
  transform: translateX(-50%);
  border: 6px solid transparent;
  border-bottom-color: rgba(255,255,255,0.08);
  border-top: none;
}
.nav-dropdown a {
  display: flex;
  align-items: center;
  gap: 0.6rem;
  padding: 0.6rem 1.25rem;
  font-size: 0.82rem;
  color: rgba(255,255,255,0.65) !important;
  transition: background var(--transition-fast), color var(--transition-fast);
  border-radius: 0;
  white-space: nowrap;
}
.nav-dropdown a:hover {
  background: rgba(255,255,255,0.06);
  color: white !important;
}
.nav-dropdown a::after { display: none !important; }
.nav-dropdown-dot {
  width: 6px;
  height: 6px;
  border-radius: 50%;
  background: var(--clr-accent-vivid);
  flex-shrink: 0;
}

/* ---- Nav links ------------------------------------------ */
.nav-links {
  display: flex;
  align-items: center;
  gap: var(--space-xl);
}

.nav-links a {
  font-size: 0.875rem;
  font-weight: 500;
  color: rgba(255,255,255,0.75);
  letter-spacing: 0.01em;
  transition: color var(--transition-fast);
  position: relative;
  padding-bottom: 2px;
}
.nav-links a::after {
  content: '';
  position: absolute;
  bottom: -2px;
  left: 0;
  right: 0;
  height: 1.5px;
  background: var(--clr-accent-vivid);
  transform: scaleX(0);
  transform-origin: left;
  transition: transform var(--transition-med);
}
.nav-links a:hover, .nav-links a.active {
  color: var(--clr-white);
}
.nav-links a:hover::after, .nav-links a.active::after {
  transform: scaleX(1);
}

.nav-cta {
  margin-left: var(--space-md);
  padding: 0.55rem 1.25rem !important;
  font-size: 0.85rem !important;
}

/* Hamburger */
.nav-toggle {
  display: none;
  flex-direction: column;
  gap: 5px;
  padding: 4px;
  cursor: pointer;
}
.nav-toggle span {
  display: block;
  width: 24px;
  height: 2px;
  background: var(--clr-white);
  border-radius: 2px;
  transition: all var(--transition-med);
}
.nav-toggle.open span:nth-child(1) { transform: translateY(7px) rotate(45deg); }
.nav-toggle.open span:nth-child(2) { opacity: 0; }
.nav-toggle.open span:nth-child(3) { transform: translateY(-7px) rotate(-45deg); }

/* Mobile menu */
.mobile-menu {
  position: fixed;
  top: var(--nav-height);
  left: 0;
  right: 0;
  bottom: 0;
  background: rgba(10, 22, 40, 0.98);
  backdrop-filter: blur(20px);
  padding: var(--space-xl) clamp(1rem, 4vw, 2rem);
  display: flex;
  flex-direction: column;
  gap: var(--space-md);
  transform: translateX(100%);
  transition: transform var(--transition-med);
  z-index: 999;
}
.mobile-menu.open { transform: translateX(0); }
.mobile-menu a {
  font-size: 1.1rem;
  font-weight: 500;
  color: rgba(255,255,255,0.8);
  padding: var(--space-sm) 0;
  border-bottom: 1px solid rgba(255,255,255,0.08);
  transition: color var(--transition-fast);
}
.mobile-menu a:hover { color: var(--clr-white); }

/* ---- Page offset for fixed nav ---------------------------- */
.page-offset { padding-top: var(--nav-height); }

/* ---- Hero ------------------------------------------------- */
.hero {
  position: relative;
  min-height: 100vh;
  display: flex;
  align-items: center;
  background: var(--clr-primary);
  overflow: hidden;
  padding-top: calc(var(--nav-height) + 3rem);
  padding-bottom: 4rem;
}

.hero-bg {
  position: absolute;
  inset: 0;
  z-index: 0;
}

.hero-bg-img {
  width: 100%;
  height: 100%;
  object-fit: cover;
  object-position: center;
  opacity: 0.18;
}

/* Geometric grid overlay */
.hero-grid {
  position: absolute;
  inset: 0;
  background-image:
    linear-gradient(rgba(21,101,192,0.08) 1px, transparent 1px),
    linear-gradient(90deg, rgba(21,101,192,0.08) 1px, transparent 1px);
  background-size: 60px 60px;
  z-index: 1;
}

/* Gradient overlay */
.hero-overlay {
  position: absolute;
  inset: 0;
  background: linear-gradient(
    135deg,
    rgba(10, 22, 40, 0.85) 0%,
    rgba(13, 31, 60, 0.70) 50%,
    rgba(10, 22, 40, 0.90) 100%
  );
  z-index: 2;
}

/* Glowing accent orb */
.hero-orb {
  position: absolute;
  width: 600px;
  height: 600px;
  border-radius: 50%;
  background: radial-gradient(circle, rgba(21,101,192,0.18) 0%, transparent 70%);
  top: 50%;
  right: -100px;
  transform: translateY(-50%);
  z-index: 1;
  pointer-events: none;
}

.hero-content {
  position: relative;
  z-index: 3;
  max-width: 760px;
}

.hero-badge {
  display: inline-flex;
  align-items: center;
  gap: 0.5rem;
  padding: 0.35rem 0.9rem;
  border: 1px solid rgba(33,150,243,0.4);
  border-radius: 100px;
  font-size: 0.78rem;
  font-weight: 500;
  letter-spacing: 0.1em;
  text-transform: uppercase;
  color: var(--clr-accent-vivid);
  background: rgba(33,150,243,0.08);
  margin-bottom: var(--space-xl);
}
.hero-badge::before {
  content: '';
  width: 6px;
  height: 6px;
  border-radius: 50%;
  background: var(--clr-accent-vivid);
  animation: pulse-dot 2s ease infinite;
}

@keyframes pulse-dot {
  0%, 100% { opacity: 1; transform: scale(1); }
  50% { opacity: 0.5; transform: scale(1.4); }
}

.hero-title {
  font-family: var(--font-display);
  font-size: clamp(2.4rem, 5vw, 4rem);
  font-weight: 800;
  line-height: 1.1;
  color: var(--clr-white);
  margin-bottom: var(--space-lg);
  letter-spacing: -0.02em;
}

.hero-title .accent-line {
  background: linear-gradient(90deg, var(--clr-accent-vivid), var(--clr-teal));
  -webkit-background-clip: text;
  -webkit-text-fill-color: transparent;
  background-clip: text;
}

.hero-subtitle {
  font-size: clamp(1rem, 2vw, 1.15rem);
  color: rgba(255,255,255,0.7);
  line-height: 1.8;
  max-width: 600px;
  margin-bottom: var(--space-xl);
}

.hero-actions {
  display: flex;
  align-items: center;
  gap: var(--space-md);
  flex-wrap: wrap;
}

.hero-stats {
  display: flex;
  align-items: center;
  gap: var(--space-2xl);
  margin-top: var(--space-3xl);
  padding-top: var(--space-xl);
  border-top: 1px solid rgba(255,255,255,0.08);
}

.hero-stat-value {
  font-family: var(--font-display);
  font-size: 2rem;
  font-weight: 800;
  color: var(--clr-white);
  line-height: 1;
}
.hero-stat-label {
  font-size: 0.78rem;
  color: rgba(255,255,255,0.5);
  letter-spacing: 0.05em;
  margin-top: 2px;
}

/* Scroll indicator */
.hero-scroll {
  position: absolute;
  bottom: var(--space-xl);
  left: 50%;
  transform: translateX(-50%);
  z-index: 3;
  display: flex;
  flex-direction: column;
  align-items: center;
  gap: var(--space-xs);
  color: rgba(255,255,255,0.4);
  font-size: 0.72rem;
  letter-spacing: 0.1em;
  text-transform: uppercase;
}
.scroll-line {
  width: 1px;
  height: 40px;
  background: linear-gradient(to bottom, rgba(255,255,255,0.4), transparent);
  animation: scroll-anim 2s ease infinite;
}
@keyframes scroll-anim {
  0% { transform: scaleY(0); transform-origin: top; }
  50% { transform: scaleY(1); transform-origin: top; }
  51% { transform: scaleY(1); transform-origin: bottom; }
  100% { transform: scaleY(0); transform-origin: bottom; }
}

/* ---- Page Hero (inner pages) ------------------------------ */
.page-hero {
  background: var(--clr-primary);
  padding: calc(var(--nav-height) + var(--space-3xl)) 0 var(--space-3xl);
  position: relative;
  overflow: hidden;
}

.page-hero-grid {
  position: absolute;
  inset: 0;
  background-image:
    linear-gradient(rgba(21,101,192,0.07) 1px, transparent 1px),
    linear-gradient(90deg, rgba(21,101,192,0.07) 1px, transparent 1px);
  background-size: 50px 50px;
}

.page-hero-content { position: relative; z-index: 1; }

.page-hero-tag {
  display: inline-block;
  font-size: 0.72rem;
  font-weight: 600;
  letter-spacing: 0.15em;
  text-transform: uppercase;
  color: var(--clr-accent-vivid);
  margin-bottom: var(--space-md);
}

.page-hero h1 {
  color: var(--clr-white);
  font-size: clamp(2rem, 4vw, 3rem);
  font-weight: 800;
  margin-bottom: var(--space-md);
  max-width: 700px;
}

.page-hero p {
  color: rgba(255,255,255,0.65);
  max-width: 620px;
  font-size: 1.05rem;
  line-height: 1.8;
}

/* ---- Cards ------------------------------------------------ */
.card {
  background: var(--clr-white);
  border-radius: var(--radius-lg);
  padding: var(--space-xl);
  box-shadow: var(--shadow-sm);
  border: 1px solid var(--clr-grey-100);
  transition: transform var(--transition-med), box-shadow var(--transition-med), border-color var(--transition-med);
}
.card:hover {
  transform: translateY(-6px);
  box-shadow: var(--shadow-lg), 0 0 20px rgba(21,101,192,0.08);
  border-color: rgba(21,101,192,0.15);
}

.card--dark {
  background: rgba(255,255,255,0.04);
  border: 1px solid rgba(255,255,255,0.08);
  color: var(--clr-white);
}
.card--dark h3, .card--dark h4 { color: var(--clr-white); }
.card--dark p { color: rgba(255,255,255,0.6); }

.card-icon {
  width: 52px;
  height: 52px;
  border-radius: var(--radius-md);
  background: linear-gradient(135deg, rgba(21,101,192,0.15), rgba(0,131,143,0.15));
  display: flex;
  align-items: center;
  justify-content: center;
  margin-bottom: var(--space-lg);
  flex-shrink: 0;
}

.card-icon svg {
  width: 24px;
  height: 24px;
  stroke: var(--clr-accent-vivid);
  fill: none;
  stroke-width: 1.8;
}

.card--dark .card-icon {
  background: rgba(33,150,243,0.12);
}

.card h3 { margin-bottom: var(--space-sm); }
.card h4 { margin-bottom: var(--space-sm); }
.card p { font-size: 0.9rem; line-height: 1.7; }

/* ---- Service Block ---------------------------------------- */
.service-block {
  padding: var(--space-2xl) var(--space-xl);
  border-radius: var(--radius-lg);
  background: var(--clr-white);
  border: 1px solid var(--clr-grey-100);
  box-shadow: var(--shadow-sm);
  transition: all var(--transition-med);
}
.service-block:hover {
  border-color: var(--clr-accent-light);
  box-shadow: var(--shadow-md), 0 0 0 1px var(--clr-accent-light);
  transform: translateY(-4px);
}

.service-block-icon {
  width: 60px;
  height: 60px;
  border-radius: var(--radius-md);
  display: flex;
  align-items: center;
  justify-content: center;
  margin-bottom: var(--space-lg);
  background: linear-gradient(135deg, var(--clr-accent) 0%, var(--clr-teal) 100%);
}
.service-block-icon svg {
  width: 28px;
  height: 28px;
  stroke: white;
  fill: none;
  stroke-width: 1.7;
}

.service-list {
  margin-top: var(--space-lg);
  display: flex;
  flex-direction: column;
  gap: var(--space-xs);
}
.service-list li {
  display: flex;
  align-items: center;
  gap: 0.5rem;
  font-size: 0.875rem;
  color: var(--clr-grey-400);
}
.service-list li::before {
  content: '';
  width: 5px;
  height: 5px;
  border-radius: 50%;
  background: var(--clr-accent-vivid);
  flex-shrink: 0;
}

/* ---- Feature Strip --------------------------------------- */
.feature-strip {
  background: linear-gradient(135deg, var(--clr-accent) 0%, var(--clr-teal) 100%);
  padding: var(--space-2xl) 0;
}
.feature-strip-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(200px, 1fr));
  gap: var(--space-xl);
  text-align: center;
}
.feature-strip-item h3 {
  color: var(--clr-white);
  font-size: 1.05rem;
  margin-bottom: var(--space-xs);
}
.feature-strip-item p {
  color: rgba(255,255,255,0.75);
  font-size: 0.85rem;
}

/* ---- Product Card ---------------------------------------- */
.product-card {
  background: var(--clr-primary-mid);
  border: 1px solid rgba(33,150,243,0.2);
  border-radius: var(--radius-xl);
  padding: var(--space-2xl);
  position: relative;
  overflow: hidden;
}
.product-card::before {
  content: '';
  position: absolute;
  top: 0;
  left: 0;
  right: 0;
  height: 2px;
  background: linear-gradient(90deg, var(--clr-accent), var(--clr-teal));
}

.product-badge {
  display: inline-flex;
  align-items: center;
  gap: 0.4rem;
  padding: 0.3rem 0.8rem;
  border-radius: 100px;
  background: rgba(184,146,42,0.15);
  border: 1px solid rgba(184,146,42,0.3);
  color: var(--clr-gold);
  font-size: 0.72rem;
  font-weight: 600;
  letter-spacing: 0.08em;
  text-transform: uppercase;
  margin-bottom: var(--space-lg);
}
.product-badge::before {
  content: '';
  width: 5px;
  height: 5px;
  border-radius: 50%;
  background: var(--clr-gold);
}

.product-name {
  font-family: var(--font-display);
  font-size: clamp(2rem, 3.5vw, 2.8rem);
  font-weight: 800;
  color: var(--clr-white);
  margin-bottom: var(--space-md);
  letter-spacing: -0.02em;
}

.product-name span {
  background: linear-gradient(90deg, var(--clr-accent-vivid), var(--clr-teal));
  -webkit-background-clip: text;
  -webkit-text-fill-color: transparent;
  background-clip: text;
}

.product-desc {
  color: rgba(255,255,255,0.65);
  font-size: 1rem;
  line-height: 1.8;
  max-width: 560px;
  margin-bottom: var(--space-xl);
}

.feature-pills {
  display: flex;
  flex-wrap: wrap;
  gap: var(--space-sm);
  margin-bottom: var(--space-xl);
}

.feature-pill {
  padding: 0.35rem 0.9rem;
  background: rgba(33,150,243,0.1);
  border: 1px solid rgba(33,150,243,0.2);
  border-radius: 100px;
  font-size: 0.8rem;
  font-weight: 500;
  color: var(--clr-accent-vivid);
}

/* ---- Stats row ------------------------------------------- */
.stats-row {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(180px, 1fr));
  gap: 1px;
  background: var(--clr-grey-100);
  border-radius: var(--radius-lg);
  overflow: hidden;
}
.stat-item {
  background: var(--clr-white);
  padding: var(--space-xl);
  text-align: center;
}
.stat-value {
  font-family: var(--font-display);
  font-size: 2.5rem;
  font-weight: 800;
  color: var(--clr-accent);
  line-height: 1;
  margin-bottom: var(--space-xs);
}
.stat-label {
  font-size: 0.85rem;
  color: var(--clr-grey-400);
}

/* ---- Dark stat row --------------------------------------- */
.stats-row--dark {
  background: rgba(255,255,255,0.04);
}
.stats-row--dark .stat-item {
  background: rgba(255,255,255,0.03);
  border: none;
}
.stats-row--dark .stat-value {
  color: var(--clr-accent-vivid);
}
.stats-row--dark .stat-label {
  color: rgba(255,255,255,0.5);
}

/* ---- Tag chips ------------------------------------------- */
.tag-list {
  display: flex;
  flex-wrap: wrap;
  gap: var(--space-sm);
  margin-top: var(--space-lg);
}
.tag {
  padding: 0.3rem 0.8rem;
  background: var(--clr-grey-100);
  border-radius: 100px;
  font-size: 0.78rem;
  color: var(--clr-grey-500);
  font-weight: 500;
}
.tag--blue {
  background: rgba(21,101,192,0.08);
  color: var(--clr-accent);
}

/* ---- Project Card ---------------------------------------- */
.project-card {
  background: var(--clr-white);
  border-radius: var(--radius-lg);
  overflow: hidden;
  border: 1px solid var(--clr-grey-100);
  box-shadow: var(--shadow-sm);
  transition: all var(--transition-med);
}
.project-card:hover {
  transform: translateY(-6px);
  box-shadow: var(--shadow-lg);
}

.project-card-img {
  width: 100%;
  height: 200px;
  object-fit: cover;
  background: linear-gradient(135deg, var(--clr-primary) 0%, var(--clr-accent) 100%);
  display: flex;
  align-items: center;
  justify-content: center;
  color: rgba(255,255,255,0.3);
  font-size: 3rem;
}

.project-card-body {
  padding: var(--space-xl);
}

.project-card-category {
  font-size: 0.72rem;
  font-weight: 600;
  letter-spacing: 0.1em;
  text-transform: uppercase;
  color: var(--clr-accent-vivid);
  margin-bottom: var(--space-sm);
}

.project-card-body h3 {
  font-size: 1.1rem;
  margin-bottom: var(--space-sm);
}

.project-card-body p {
  font-size: 0.875rem;
  line-height: 1.6;
  color: var(--clr-grey-400);
}

/* ---- Contact form ---------------------------------------- */
.contact-form {
  display: grid;
  gap: var(--space-lg);
}
.form-row { display: grid; grid-template-columns: 1fr 1fr; gap: var(--space-lg); }
.form-group { display: flex; flex-direction: column; gap: 0.4rem; }
.form-label {
  font-size: 0.82rem;
  font-weight: 600;
  color: var(--clr-grey-500);
  letter-spacing: 0.03em;
}
.form-input, .form-select, .form-textarea {
  padding: 0.75rem 1rem;
  border: 1.5px solid var(--clr-grey-200);
  border-radius: var(--radius-sm);
  font-family: var(--font-primary);
  font-size: 0.9rem;
  color: var(--clr-primary);
  background: var(--clr-white);
  transition: border-color var(--transition-fast), box-shadow var(--transition-fast);
  outline: none;
}
.form-input:focus, .form-select:focus, .form-textarea:focus {
  border-color: var(--clr-accent);
  box-shadow: 0 0 0 3px rgba(21,101,192,0.1);
}
.form-textarea { resize: vertical; min-height: 140px; }

.contact-info-item {
  display: flex;
  align-items: flex-start;
  gap: var(--space-md);
  padding: var(--space-lg) 0;
  border-bottom: 1px solid var(--clr-grey-100);
}
.contact-info-icon {
  width: 44px;
  height: 44px;
  border-radius: var(--radius-md);
  background: rgba(21,101,192,0.08);
  display: flex;
  align-items: center;
  justify-content: center;
  flex-shrink: 0;
}
.contact-info-icon svg {
  width: 20px;
  height: 20px;
  stroke: var(--clr-accent);
  fill: none;
  stroke-width: 1.8;
}

/* ---- Footer ----------------------------------------------- */
#footer {
  background: var(--clr-dark);
  color: rgba(255,255,255,0.6);
  padding-top: var(--space-3xl);
  position: relative;
}
#footer::before {
  content: '';
  position: absolute;
  top: 0;
  left: 0;
  right: 0;
  height: 2px;
  background: linear-gradient(90deg, var(--clr-accent), var(--clr-teal), var(--clr-accent));
  opacity: 0.6;
}
.footer-grid {
  display: grid;
  grid-template-columns: 1.8fr 1fr 1fr 1fr;
  gap: var(--space-2xl);
  padding-bottom: var(--space-2xl);
  border-bottom: 1px solid rgba(255,255,255,0.06);
}
.footer-brand { max-width: 300px; }
.footer-logo {
  display: flex;
  align-items: center;
  gap: 0.5rem;
  margin-bottom: var(--space-md);
}
.footer-logo-text {
  font-family: var(--font-display);
  font-size: 1.3rem;
  font-weight: 800;
  color: var(--clr-white);
}
.footer-logo-text span { color: var(--clr-accent-vivid); }
.footer-tagline {
  font-size: 0.85rem;
  line-height: 1.7;
  color: rgba(255,255,255,0.45);
  margin-bottom: var(--space-lg);
}
.footer-col h4 {
  color: var(--clr-white);
  font-size: 0.82rem;
  font-weight: 600;
  letter-spacing: 0.1em;
  text-transform: uppercase;
  margin-bottom: var(--space-lg);
}
.footer-col ul { display: flex; flex-direction: column; gap: var(--space-sm); }
.footer-col ul li a {
  font-size: 0.875rem;
  color: rgba(255,255,255,0.45);
  transition: color var(--transition-fast);
}
.footer-col ul li a:hover { color: var(--clr-white); }
.footer-bottom {
  padding: var(--space-lg) 0;
  display: flex;
  align-items: center;
  justify-content: space-between;
  flex-wrap: wrap;
  gap: var(--space-md);
}
.footer-copy {
  font-size: 0.8rem;
  color: rgba(255,255,255,0.3);
}
.footer-links-bottom {
  display: flex;
  gap: var(--space-lg);
}
.footer-links-bottom a {
  font-size: 0.8rem;
  color: rgba(255,255,255,0.3);
  transition: color var(--transition-fast);
}
.footer-links-bottom a:hover { color: rgba(255,255,255,0.6); }

/* ---- Animations ------------------------------------------- */
.fade-up {
  opacity: 0;
  transform: translateY(30px);
  transition: opacity 0.7s cubic-bezier(0.25, 0.46, 0.45, 0.94), transform 0.7s cubic-bezier(0.25, 0.46, 0.45, 0.94);
}
.fade-up.visible {
  opacity: 1;
  transform: translateY(0);
}
.fade-up:nth-child(2) { transition-delay: 0.08s; }
.fade-up:nth-child(3) { transition-delay: 0.16s; }
.fade-up:nth-child(4) { transition-delay: 0.24s; }
.fade-up:nth-child(5) { transition-delay: 0.32s; }
.fade-up:nth-child(6) { transition-delay: 0.40s; }

/* ---- Breadcrumb ------------------------------------------- */
.breadcrumb {
  display: flex;
  align-items: center;
  gap: 0.5rem;
  font-size: 0.8rem;
  color: rgba(255,255,255,0.4);
  margin-bottom: var(--space-lg);
}
.breadcrumb a { color: rgba(255,255,255,0.4); transition: color var(--transition-fast); }
.breadcrumb a:hover { color: rgba(255,255,255,0.7); }
.breadcrumb span { color: rgba(255,255,255,0.6); }

/* ---- Accordion / FAQ -------------------------------------- */
.accordion-item {
  border-bottom: 1px solid var(--clr-grey-100);
  overflow: hidden;
}
.accordion-trigger {
  width: 100%;
  display: flex;
  align-items: center;
  justify-content: space-between;
  padding: var(--space-lg) 0;
  font-weight: 600;
  font-size: 0.95rem;
  color: var(--clr-primary);
  text-align: left;
  gap: var(--space-md);
  cursor: pointer;
}
.accordion-icon {
  width: 20px;
  height: 20px;
  flex-shrink: 0;
  position: relative;
  transition: transform var(--transition-med);
}
.accordion-icon::before, .accordion-icon::after {
  content: '';
  position: absolute;
  background: var(--clr-accent);
  border-radius: 2px;
}
.accordion-icon::before {
  width: 12px;
  height: 2px;
  top: 50%;
  left: 50%;
  transform: translate(-50%, -50%);
}
.accordion-icon::after {
  width: 2px;
  height: 12px;
  top: 50%;
  left: 50%;
  transform: translate(-50%, -50%);
  transition: transform var(--transition-med), opacity var(--transition-med);
}
.accordion-item.open .accordion-icon::after {
  transform: translate(-50%, -50%) rotate(90deg);
  opacity: 0;
}
.accordion-body {
  max-height: 0;
  overflow: hidden;
  transition: max-height var(--transition-med);
}
.accordion-body p {
  padding-bottom: var(--space-lg);
  font-size: 0.9rem;
  line-height: 1.7;
}

/* ---- Callout Banner --------------------------------------- */
.callout {
  background: linear-gradient(135deg, var(--clr-accent) 0%, var(--clr-teal) 100%);
  border-radius: var(--radius-xl);
  padding: var(--space-2xl) var(--space-xl);
  text-align: center;
}
.callout h2 { color: var(--clr-white); margin-bottom: var(--space-sm); }
.callout p { color: rgba(255,255,255,0.8); margin-bottom: var(--space-xl); }

/* ---- Numbered list --------------------------------------- */
.numbered-list {
  display: flex;
  flex-direction: column;
  gap: var(--space-lg);
}
.numbered-item {
  display: flex;
  gap: var(--space-lg);
  align-items: flex-start;
}
.numbered-index {
  width: 36px;
  height: 36px;
  border-radius: 50%;
  background: rgba(21,101,192,0.1);
  color: var(--clr-accent);
  font-weight: 700;
  font-size: 0.9rem;
  display: flex;
  align-items: center;
  justify-content: center;
  flex-shrink: 0;
}
.numbered-content h4 { margin-bottom: 0.25rem; }
.numbered-content p { font-size: 0.875rem; }

/* ---- Responsive ------------------------------------------- */
@media (max-width: 1024px) {
  .grid-4 { grid-template-columns: repeat(2, 1fr); }
  .footer-grid { grid-template-columns: 1fr 1fr; }
}

@media (max-width: 768px) {
  :root {
    --space-3xl: 4rem;
    --space-2xl: 3rem;
  }

  .nav-links, .nav-cta { display: none; }
  .nav-toggle { display: flex; }

  .grid-2, .grid-3, .grid-4 { grid-template-columns: 1fr; }
  .hero-stats { gap: var(--space-xl); flex-wrap: wrap; }
  .form-row { grid-template-columns: 1fr; }
  .footer-grid { grid-template-columns: 1fr; gap: var(--space-xl); }
  .footer-bottom { flex-direction: column; align-items: flex-start; }

  .hero-title { font-size: clamp(2rem, 8vw, 2.8rem); }
}

@media (max-width: 480px) {
  .hero-actions { flex-direction: column; align-items: flex-start; }
  .stats-row { grid-template-columns: 1fr 1fr; }
}

/* =========================================================
   DISCIPLINE CARDS (WSP-style large image overlay)
   ========================================================= */
.discipline-grid {
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  grid-template-rows: auto auto;
  gap: 0;
}
.discipline-card {
  position: relative;
  overflow: hidden;
  aspect-ratio: 4/5;
  cursor: pointer;
}
.discipline-card:nth-child(1) { grid-column: 1 / 3; aspect-ratio: unset; min-height: 380px; }
.discipline-card:nth-child(2) { aspect-ratio: unset; min-height: 380px; }
.discipline-card:nth-child(3) { aspect-ratio: unset; min-height: 380px; }
.discipline-card:nth-child(4),
.discipline-card:nth-child(5),
.discipline-card:nth-child(6),
.discipline-card:nth-child(7) { min-height: 280px; }

.discipline-card-img {
  width: 100%;
  height: 100%;
  object-fit: cover;
  transition: transform 0.8s cubic-bezier(0.25, 0.46, 0.45, 0.94), filter 0.6s ease;
  filter: brightness(1) saturate(1);
}
.discipline-card:hover .discipline-card-img {
  transform: scale(1.08);
  filter: brightness(1.05) saturate(1.15);
}

/* Gradient overlay */
.discipline-card-overlay {
  position: absolute;
  inset: 0;
  background: linear-gradient(
    to top,
    rgba(10,22,40,0.88) 0%,
    rgba(10,22,40,0.3) 50%,
    rgba(10,22,40,0.05) 100%
  );
  transition: background var(--transition-med);
}
.discipline-card:hover .discipline-card-overlay {
  background: linear-gradient(
    to top,
    rgba(21,101,192,0.85) 0%,
    rgba(10,22,40,0.55) 60%,
    rgba(10,22,40,0.1) 100%
  );
}

/* Content at bottom */
.discipline-card-body {
  position: absolute;
  bottom: 0;
  left: 0;
  right: 0;
  padding: 1.5rem;
  z-index: 2;
}
.discipline-card-label {
  font-size: 0.7rem;
  font-weight: 600;
  letter-spacing: 0.12em;
  text-transform: uppercase;
  color: rgba(255,255,255,0.55);
  margin-bottom: 0.4rem;
  display: block;
  transition: color var(--transition-fast);
}
.discipline-card:hover .discipline-card-label {
  color: rgba(255,255,255,0.8);
}
.discipline-card-title {
  font-family: var(--font-display);
  font-size: 1.1rem;
  font-weight: 700;
  color: var(--clr-white);
  line-height: 1.3;
  margin-bottom: 0;
  transition: transform var(--transition-med);
}
.discipline-card:nth-child(1) .discipline-card-title { font-size: 1.5rem; }
.discipline-card:hover .discipline-card-title { transform: translateY(-4px); }

/* Arrow on hover */
.discipline-card-arrow {
  display: inline-flex;
  align-items: center;
  gap: 0.4rem;
  color: var(--clr-accent-vivid);
  font-size: 0.8rem;
  font-weight: 600;
  margin-top: 0.5rem;
  opacity: 0;
  transform: translateY(6px);
  transition: opacity var(--transition-med), transform var(--transition-med);
}
.discipline-card:hover .discipline-card-arrow {
  opacity: 1;
  transform: translateY(0);
}

/* Placeholder backgrounds when no image */
.disc-bg-structural { background: linear-gradient(135deg, #1a2744 0%, #1565C0 100%); }
.disc-bg-geotech    { background: linear-gradient(135deg, #2d1f0f 0%, #6B4226 60%, #455A6B 100%); }
.disc-bg-water      { background: linear-gradient(135deg, #0A1628 0%, #00838F 100%); }
.disc-bg-env        { background: linear-gradient(135deg, #0f2d1a 0%, #2E7D32 100%); }
.disc-bg-transport  { background: linear-gradient(135deg, #1a1428 0%, #455A6B 100%); }
.disc-bg-asset      { background: linear-gradient(135deg, #1f1a10 0%, #795548 60%, #455A6B 100%); }
.disc-bg-tech       { background: linear-gradient(135deg, #071426 0%, #1565C0 50%, #00838F 100%); }

/* ── Nav chevron indicator ────────────────────────────────── */
.nav-chevron {
  display: inline-block;
  width: 8px;
  height: 8px;
  border-right: 1.5px solid currentColor;
  border-bottom: 1.5px solid currentColor;
  transform: rotate(45deg) translateY(-2px);
  margin-left: 3px;
  opacity: 0.6;
  transition: transform var(--transition-fast);
}
.nav-item:hover .nav-chevron {
  transform: rotate(-135deg) translateY(2px);
}

/* ── Sector headline strip ───────────────────────────────── */
.sector-strip {
  background: var(--clr-primary);
  padding: var(--space-lg) 0;
  border-bottom: 1px solid rgba(255,255,255,0.05);
}
.sector-strip-inner {
  display: flex;
  align-items: center;
  gap: var(--space-2xl);
  overflow-x: auto;
  scrollbar-width: none;
}
.sector-strip-inner::-webkit-scrollbar { display: none; }
.sector-item {
  display: flex;
  align-items: center;
  gap: 0.5rem;
  white-space: nowrap;
  font-size: 0.8rem;
  font-weight: 500;
  color: rgba(255,255,255,0.5);
  text-decoration: none;
  transition: color var(--transition-fast);
  padding: 0.25rem 0;
}
.sector-item:hover { color: rgba(255,255,255,0.85); }
.sector-item-dot {
  width: 4px;
  height: 4px;
  border-radius: 50%;
  background: var(--clr-accent-vivid);
  flex-shrink: 0;
}

/* ── Responsive discipline grid ─────────────────────────── */
@media (max-width: 1024px) {
  .discipline-grid {
    grid-template-columns: 1fr 1fr;
  }
  .discipline-card:nth-child(1) { grid-column: 1 / 3; }
}
@media (max-width: 640px) {
  .discipline-grid {
    grid-template-columns: 1fr;
  }
  .discipline-card:nth-child(1) { grid-column: auto; }
  .discipline-card { min-height: 240px !important; }
}