/* Pacific Robotics & Automation Ltd — Main Stylesheet
   Design: Industrial Precision Modernism
   Colors: Signal Orange #FF6B00, Deep Navy #1A1A2E, Midnight Blue #16213E
   Fonts: Barlow Condensed (headings), Barlow (body)
*/

@import url('https://fonts.googleapis.com/css2?family=Barlow:ital,wght@0,300;0,400;0,500;0,600;0,700;1,400&family=Barlow+Condensed:wght@400;600;700;800&family=Barlow+Semi+Condensed:wght@400;500;600&display=swap');

/* ===== RESET & BASE ===== */
*, *::before, *::after {
  box-sizing: border-box;
  margin: 0;
  padding: 0;
}

:root {
  --orange: #FF6B00;
  --orange-dark: #E05A00;
  --orange-light: #FF8C33;
  --navy: #1A1A2E;
  --navy-mid: #16213E;
  --navy-light: #0F3460;
  --white: #FFFFFF;
  --off-white: #F5F5F5;
  --grey-light: #E8E8E8;
  --grey-mid: #9E9E9E;
  --grey-dark: #4A4A4A;
  --text: #2C2C2C;
  --font-display: 'Barlow Condensed', sans-serif;
  --font-body: 'Barlow', sans-serif;
  --font-semi: 'Barlow Semi Condensed', sans-serif;
  --transition: 0.3s ease;
  --shadow-sm: 0 2px 8px rgba(0,0,0,0.08);
  --shadow-md: 0 4px 20px rgba(0,0,0,0.12);
  --shadow-lg: 0 8px 40px rgba(0,0,0,0.18);
  --radius: 4px;
}

html {
  scroll-behavior: smooth;
}

body {
  font-family: var(--font-body);
  font-size: 16px;
  line-height: 1.6;
  color: var(--text);
  background: var(--white);
  overflow-x: hidden;
}

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

a {
  color: inherit;
  text-decoration: none;
}

ul {
  list-style: none;
}

/* ===== TYPOGRAPHY ===== */
h1, h2, h3, h4, h5, h6 {
  font-family: var(--font-display);
  line-height: 1.15;
  font-weight: 700;
  letter-spacing: -0.01em;
}

h1 { font-size: clamp(2.5rem, 5vw, 4rem); }
h2 { font-size: clamp(1.8rem, 3.5vw, 2.8rem); }
h3 { font-size: clamp(1.3rem, 2.5vw, 1.8rem); }
h4 { font-size: 1.2rem; }

p { margin-bottom: 1rem; line-height: 1.7; }
p:last-child { margin-bottom: 0; }

.section-label {
  font-family: var(--font-semi);
  font-size: 0.75rem;
  font-weight: 600;
  letter-spacing: 0.15em;
  text-transform: uppercase;
  color: var(--orange);
  display: block;
  margin-bottom: 0.75rem;
}

/* ===== LAYOUT ===== */
.container {
  max-width: 1280px;
  margin: 0 auto;
  padding: 0 2rem;
}

.container-wide {
  max-width: 1440px;
  margin: 0 auto;
  padding: 0 2rem;
}

section {
  padding: 5rem 0;
}

.section-dark {
  background: var(--navy);
  color: var(--white);
}

.section-mid {
  background: var(--navy-mid);
  color: var(--white);
}

.section-grey {
  background: var(--off-white);
}

/* ===== NAVIGATION ===== */
.navbar {
  position: fixed;
  top: 0;
  left: 0;
  right: 0;
  z-index: 1000;
  background: var(--navy);
  border-bottom: 2px solid var(--orange);
  transition: var(--transition);
}

.navbar.scrolled {
  box-shadow: var(--shadow-lg);
}

.nav-inner {
  display: flex;
  align-items: center;
  justify-content: space-between;
  height: 72px;
  max-width: 1280px;
  margin: 0 auto;
  padding: 0 2rem;
}

.nav-logo {
  display: flex;
  align-items: center;
  gap: 0.75rem;
}

.nav-logo-mark {
  font-family: var(--font-display);
  font-size: 1.8rem;
  font-weight: 800;
  color: var(--white);
  letter-spacing: -0.02em;
}

.nav-logo-mark span {
  color: var(--orange);
}

.nav-logo-text {
  font-family: var(--font-semi);
  font-size: 0.7rem;
  font-weight: 500;
  color: var(--grey-mid);
  letter-spacing: 0.05em;
  text-transform: uppercase;
  line-height: 1.3;
}

.nav-menu {
  display: flex;
  align-items: center;
  gap: 0.25rem;
}

.nav-item {
  position: relative;
}

.nav-link {
  font-family: var(--font-semi);
  font-size: 0.875rem;
  font-weight: 500;
  color: var(--grey-light);
  padding: 0.5rem 0.875rem;
  border-radius: var(--radius);
  transition: var(--transition);
  display: flex;
  align-items: center;
  gap: 0.3rem;
  letter-spacing: 0.02em;
  text-transform: uppercase;
}

.nav-link:hover,
.nav-link.active {
  color: var(--orange);
  background: rgba(255, 107, 0, 0.08);
}

.nav-link .arrow {
  font-size: 0.6rem;
  transition: transform var(--transition);
}

.nav-item:hover .arrow {
  transform: rotate(180deg);
}

/* Dropdown */
.nav-dropdown {
  position: absolute;
  top: calc(100% + 8px);
  left: 0;
  background: var(--navy-mid);
  border: 1px solid rgba(255,107,0,0.2);
  border-top: 2px solid var(--orange);
  min-width: 220px;
  border-radius: 0 0 var(--radius) var(--radius);
  opacity: 0;
  visibility: hidden;
  transform: translateY(-8px);
  transition: all var(--transition);
  box-shadow: var(--shadow-lg);
}

.nav-item:hover .nav-dropdown {
  opacity: 1;
  visibility: visible;
  transform: translateY(0);
}

.nav-dropdown a {
  display: block;
  padding: 0.75rem 1.25rem;
  font-family: var(--font-semi);
  font-size: 0.85rem;
  color: var(--grey-light);
  border-bottom: 1px solid rgba(255,255,255,0.05);
  transition: var(--transition);
  letter-spacing: 0.02em;
}

.nav-dropdown a:last-child {
  border-bottom: none;
}

.nav-dropdown a:hover {
  color: var(--orange);
  background: rgba(255,107,0,0.08);
  padding-left: 1.5rem;
}

.nav-cta {
  background: var(--orange);
  color: var(--white) !important;
  padding: 0.5rem 1.25rem;
  border-radius: var(--radius);
  font-weight: 600;
  transition: var(--transition);
}

.nav-cta:hover {
  background: var(--orange-dark) !important;
  color: var(--white) !important;
}

.nav-hamburger {
  display: none;
  flex-direction: column;
  gap: 5px;
  cursor: pointer;
  padding: 0.5rem;
}

.nav-hamburger span {
  display: block;
  width: 24px;
  height: 2px;
  background: var(--white);
  transition: var(--transition);
}

/* ===== BUTTONS ===== */
.btn {
  display: inline-flex;
  align-items: center;
  gap: 0.5rem;
  font-family: var(--font-semi);
  font-size: 0.9rem;
  font-weight: 600;
  letter-spacing: 0.05em;
  text-transform: uppercase;
  padding: 0.875rem 2rem;
  border-radius: var(--radius);
  border: 2px solid transparent;
  cursor: pointer;
  transition: var(--transition);
  white-space: nowrap;
}

.btn-primary {
  background: var(--orange);
  color: var(--white);
  border-color: var(--orange);
}

.btn-primary:hover {
  background: var(--orange-dark);
  border-color: var(--orange-dark);
  transform: translateY(-2px);
  box-shadow: 0 6px 20px rgba(255,107,0,0.35);
}

.btn-outline {
  background: transparent;
  color: var(--white);
  border-color: var(--white);
}

.btn-outline:hover {
  background: var(--white);
  color: var(--navy);
  transform: translateY(-2px);
}

.btn-outline-orange {
  background: transparent;
  color: var(--orange);
  border-color: var(--orange);
}

.btn-outline-orange:hover {
  background: var(--orange);
  color: var(--white);
  transform: translateY(-2px);
}

.btn-sm {
  padding: 0.625rem 1.25rem;
  font-size: 0.8rem;
}

/* ===== CARDS ===== */
.card {
  background: var(--white);
  border-radius: var(--radius);
  border-left: 4px solid var(--orange);
  box-shadow: var(--shadow-sm);
  padding: 2rem;
  transition: var(--transition);
}

.card:hover {
  transform: translateY(-4px);
  box-shadow: var(--shadow-md);
  border-left-color: var(--orange-dark);
}

.card-dark {
  background: var(--navy-mid);
  color: var(--white);
  border-left: 4px solid var(--orange);
}

.card-dark:hover {
  background: var(--navy-light);
}

/* ===== STATS ===== */
.stat-number {
  font-family: var(--font-display);
  font-size: clamp(2.5rem, 5vw, 4rem);
  font-weight: 800;
  color: var(--orange);
  line-height: 1;
  display: block;
}

.stat-label {
  font-family: var(--font-semi);
  font-size: 0.85rem;
  color: var(--grey-mid);
  text-transform: uppercase;
  letter-spacing: 0.08em;
  margin-top: 0.25rem;
}

/* ===== SECTION HEADERS ===== */
.section-header {
  margin-bottom: 3.5rem;
}

.section-header.centered {
  text-align: center;
}

.section-header h2 {
  margin-bottom: 1rem;
}

.section-header p {
  font-size: 1.1rem;
  color: var(--grey-dark);
  max-width: 640px;
}

.section-header.centered p {
  margin: 0 auto;
}

.section-header.on-dark p {
  color: var(--grey-mid);
}

.section-header.on-dark h2 {
  color: var(--white);
}

/* Orange underline accent */
.section-header h2::after {
  content: '';
  display: block;
  width: 48px;
  height: 3px;
  background: var(--orange);
  margin-top: 0.75rem;
}

.section-header.centered h2::after {
  margin: 0.75rem auto 0;
}

/* ===== GRID LAYOUTS ===== */
.grid-2 {
  display: grid;
  grid-template-columns: repeat(2, 1fr);
  gap: 2rem;
}

.grid-3 {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 2rem;
}

.grid-4 {
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  gap: 1.5rem;
}

/* ===== HERO BASE ===== */
.page-hero {
  padding: 10rem 0 5rem;
  background: var(--navy);
  color: var(--white);
  position: relative;
  overflow: hidden;
}

.page-hero::before {
  content: '';
  position: absolute;
  inset: 0;
  background: linear-gradient(135deg, rgba(26,26,46,0.95) 0%, rgba(15,52,96,0.7) 100%);
  z-index: 1;
}

.page-hero .container {
  position: relative;
  z-index: 2;
}

.page-hero h1 {
  font-size: clamp(2.5rem, 5vw, 3.5rem);
  margin-bottom: 1rem;
}

.page-hero p {
  font-size: 1.15rem;
  color: rgba(255,255,255,0.8);
  max-width: 600px;
}

/* ===== BREADCRUMB ===== */
.breadcrumb {
  display: flex;
  align-items: center;
  gap: 0.5rem;
  font-family: var(--font-semi);
  font-size: 0.8rem;
  color: var(--grey-mid);
  margin-bottom: 1.5rem;
  text-transform: uppercase;
  letter-spacing: 0.05em;
}

.breadcrumb a:hover { color: var(--orange); }
.breadcrumb .sep { color: var(--orange); }
.breadcrumb .current { color: var(--orange); }

/* ===== ICON BOXES ===== */
.icon-box {
  width: 56px;
  height: 56px;
  background: rgba(255,107,0,0.1);
  border: 1px solid rgba(255,107,0,0.3);
  border-radius: var(--radius);
  display: flex;
  align-items: center;
  justify-content: center;
  margin-bottom: 1.25rem;
  font-size: 1.5rem;
  color: var(--orange);
  flex-shrink: 0;
}

/* ===== TAGS ===== */
.tag {
  display: inline-block;
  font-family: var(--font-semi);
  font-size: 0.7rem;
  font-weight: 600;
  letter-spacing: 0.1em;
  text-transform: uppercase;
  padding: 0.25rem 0.75rem;
  border-radius: 2px;
  background: rgba(255,107,0,0.12);
  color: var(--orange);
  border: 1px solid rgba(255,107,0,0.25);
}

/* ===== DIVIDERS ===== */
.divider-orange {
  width: 48px;
  height: 3px;
  background: var(--orange);
  margin: 1rem 0;
}

/* ===== QUOTE BLOCK ===== */
.quote-block {
  border-left: 4px solid var(--orange);
  padding: 1.25rem 1.5rem;
  background: rgba(255,107,0,0.05);
  margin: 1.5rem 0;
  border-radius: 0 var(--radius) var(--radius) 0;
}

.quote-block p {
  font-style: italic;
  font-size: 1.05rem;
  color: var(--grey-dark);
  margin-bottom: 0.5rem;
}

.quote-block cite {
  font-family: var(--font-semi);
  font-size: 0.8rem;
  color: var(--grey-mid);
  text-transform: uppercase;
  letter-spacing: 0.05em;
}

/* ===== FOOTER ===== */
.footer {
  background: var(--navy);
  color: var(--white);
  padding: 4rem 0 0;
  border-top: 3px solid var(--orange);
}

.footer-grid {
  display: grid;
  grid-template-columns: 2fr 1fr 1fr 1fr;
  gap: 3rem;
  margin-bottom: 3rem;
}

.footer-brand .nav-logo-mark {
  font-size: 2rem;
  margin-bottom: 0.5rem;
}

.footer-brand p {
  color: var(--grey-mid);
  font-size: 0.9rem;
  margin-top: 1rem;
  line-height: 1.6;
}

.footer-col h4 {
  font-family: var(--font-semi);
  font-size: 0.75rem;
  font-weight: 600;
  letter-spacing: 0.12em;
  text-transform: uppercase;
  color: var(--orange);
  margin-bottom: 1.25rem;
}

.footer-col ul li {
  margin-bottom: 0.6rem;
}

.footer-col ul li a {
  color: var(--grey-mid);
  font-size: 0.9rem;
  transition: var(--transition);
}

.footer-col ul li a:hover {
  color: var(--orange);
  padding-left: 4px;
}

.footer-bottom {
  border-top: 1px solid rgba(255,255,255,0.08);
  padding: 1.5rem 0;
  display: flex;
  justify-content: space-between;
  align-items: center;
}

.footer-bottom p {
  color: var(--grey-mid);
  font-size: 0.8rem;
  margin: 0;
}

.footer-bottom a {
  color: var(--orange);
}

/* ===== ANIMATIONS ===== */
.fade-up {
  opacity: 0;
  transform: translateY(30px);
  transition: opacity 0.6s ease, transform 0.6s ease;
}

.fade-up.visible {
  opacity: 1;
  transform: translateY(0);
}

.fade-up:nth-child(2) { transition-delay: 0.1s; }
.fade-up:nth-child(3) { transition-delay: 0.2s; }
.fade-up:nth-child(4) { transition-delay: 0.3s; }

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

@media (max-width: 768px) {
  section { padding: 3.5rem 0; }
  .grid-2, .grid-3, .grid-4 { grid-template-columns: 1fr; }
  .footer-grid { grid-template-columns: 1fr; gap: 2rem; }
  .footer-bottom { flex-direction: column; gap: 0.5rem; text-align: center; }

  .nav-menu {
    display: none;
    position: fixed;
    top: 72px;
    left: 0;
    right: 0;
    background: var(--navy-mid);
    flex-direction: column;
    padding: 1rem;
    gap: 0;
    border-top: 2px solid var(--orange);
    box-shadow: var(--shadow-lg);
  }

  .nav-menu.open { display: flex; }
  .nav-link { padding: 0.875rem 1rem; width: 100%; }
  .nav-dropdown { position: static; opacity: 1; visibility: visible; transform: none; border: none; border-left: 2px solid var(--orange); margin-left: 1rem; margin-top: 0; }
  .nav-hamburger { display: flex; }
}

@media (max-width: 480px) {
  .container { padding: 0 1rem; }
  h1 { font-size: 2rem; }
  h2 { font-size: 1.6rem; }
}