/* ============================================================
   IPM — International Precision Manufacturing
   styles.css  |  Mobile-first, BEM-ish, CSS custom properties
   ============================================================ */

/* ── 1. Custom Properties ─────────────────────────────────── */
:root {
  --primary:       #111827;
  --primary-light: #1F2937;
  --accent:        #C41230;
  --accent-hover:  #A50E28;
  --white:         #FFFFFF;
  --off-white:     #F5F5F5;
  --gray-mid:      #6B7280;
  --gray-light:    #9CA3AF;
  --gray-border:   #E5E7EB;

  --font-head:  'Space Grotesk', 'Inter', system-ui, sans-serif;
  --font-body:  'Inter', system-ui, sans-serif;

  --nav-h:     72px;
  --max-w:     1200px;
  --radius:    4px;
  --transition: 0.2s ease;
}

/* ── 2. Reset & Base ──────────────────────────────────────── */
*, *::before, *::after { box-sizing: border-box; margin: 0; padding: 0; }

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

body {
  font-family: var(--font-body);
  color: var(--primary);
  background: var(--white);
  line-height: 1.6;
  -webkit-font-smoothing: antialiased;
}

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

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

ul, ol { list-style: none; }

/* ── 3. Typography ────────────────────────────────────────── */
h1, h2, h3, h4, h5 {
  font-family: var(--font-head);
  font-weight: 700;
  line-height: 1.15;
  letter-spacing: -0.02em;
}

h1 { font-size: clamp(2rem, 5vw, 3.5rem); }
h2 { font-size: clamp(1.6rem, 3.5vw, 2.5rem); }
h3 { font-size: clamp(1.2rem, 2.5vw, 1.5rem); }
h4 { font-size: 1.1rem; }

p { max-width: 70ch; }

.section-label {
  display: inline-block;
  font-size: 0.75rem;
  font-weight: 700;
  letter-spacing: 0.15em;
  text-transform: uppercase;
  color: var(--accent);
  margin-bottom: 0.75rem;
}

/* ── 4. Layout Utilities ──────────────────────────────────── */
.container {
  width: 100%;
  max-width: var(--max-w);
  margin-inline: auto;
  padding-inline: 1.5rem;
}

.section {
  padding-block: 5rem;
}

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

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

.section--dark p { color: var(--gray-light); }

.grid-2 { display: grid; grid-template-columns: 1fr; gap: 2rem; }
.grid-3 { display: grid; grid-template-columns: 1fr; gap: 2rem; }
.grid-4 { display: grid; grid-template-columns: 1fr 1fr; gap: 1.5rem; }

@media (min-width: 768px) {
  .grid-2 { grid-template-columns: 1fr 1fr; }
  .grid-3 { grid-template-columns: repeat(3, 1fr); }
  .grid-4 { grid-template-columns: repeat(4, 1fr); }
}

.flex-center { display: flex; align-items: center; justify-content: center; }
.text-center { text-align: center; }
.text-center p { margin-inline: auto; }

/* ── 5. Buttons ───────────────────────────────────────────── */
.btn {
  display: inline-flex;
  align-items: center;
  gap: 0.5rem;
  padding: 0.75rem 1.75rem;
  font-family: var(--font-head);
  font-size: 0.9rem;
  font-weight: 600;
  letter-spacing: 0.03em;
  border-radius: var(--radius);
  cursor: pointer;
  transition: background var(--transition), color var(--transition), border-color var(--transition);
  border: 2px solid transparent;
  white-space: nowrap;
}

.btn--primary {
  background: var(--accent);
  color: var(--white);
  border-color: var(--accent);
}
.btn--primary:hover, .btn--primary:focus-visible {
  background: var(--accent-hover);
  border-color: var(--accent-hover);
}

.btn--outline {
  background: transparent;
  color: var(--white);
  border-color: rgba(255,255,255,0.5);
}
.btn--outline:hover, .btn--outline:focus-visible {
  border-color: var(--white);
  background: rgba(255,255,255,0.08);
}

.btn--outline-dark {
  background: transparent;
  color: var(--primary);
  border-color: var(--primary);
}
.btn--outline-dark:hover, .btn--outline-dark:focus-visible {
  background: var(--primary);
  color: var(--white);
}

/* ── 6. Navigation ────────────────────────────────────────── */
.nav {
  position: fixed;
  top: 0;
  left: 0;
  right: 0;
  z-index: 100;
  height: var(--nav-h);
  background: var(--white);
  border-bottom: 1px solid var(--gray-border);
  transition: box-shadow var(--transition);
}

.nav.scrolled {
  box-shadow: 0 2px 16px rgba(0,0,0,0.08);
}

.nav__inner {
  display: flex;
  align-items: center;
  justify-content: space-between;
  height: 100%;
}

.nav__logo img {
  height: 44px;
  width: auto;
}

.nav__menu {
  display: none;
  align-items: center;
  gap: 0.25rem;
}

.nav__menu a {
  padding: 0.5rem 0.85rem;
  font-size: 0.875rem;
  font-weight: 600;
  font-family: var(--font-head);
  letter-spacing: 0.02em;
  color: var(--primary);
  border-radius: var(--radius);
  transition: color var(--transition), background var(--transition);
}

.nav__menu a:hover,
.nav__menu a.active {
  color: var(--accent);
  background: var(--off-white);
}

.nav__cta {
  margin-left: 1rem;
  background: var(--accent) !important;
  color: var(--white) !important;
  padding: 0.5rem 1.25rem !important;
}
.nav__cta:hover {
  background: var(--accent-hover) !important;
}

.nav__hamburger {
  display: flex;
  flex-direction: column;
  gap: 5px;
  cursor: pointer;
  padding: 0.5rem;
  background: none;
  border: none;
  border-radius: var(--radius);
}
.nav__hamburger span {
  display: block;
  width: 24px;
  height: 2px;
  background: var(--primary);
  transition: transform 0.3s, opacity 0.3s;
}
.nav__hamburger.open span:nth-child(1) { transform: translateY(7px) rotate(45deg); }
.nav__hamburger.open span:nth-child(2) { opacity: 0; }
.nav__hamburger.open span:nth-child(3) { transform: translateY(-7px) rotate(-45deg); }

/* Mobile drawer */
.nav__mobile {
  display: none;
  position: fixed;
  top: var(--nav-h);
  left: 0;
  right: 0;
  background: var(--white);
  border-bottom: 1px solid var(--gray-border);
  padding: 1.5rem;
  box-shadow: 0 8px 24px rgba(0,0,0,0.1);
  z-index: 99;
}
.nav__mobile.open { display: block; }
.nav__mobile a {
  display: block;
  padding: 0.75rem 0;
  font-weight: 600;
  font-family: var(--font-head);
  border-bottom: 1px solid var(--gray-border);
  font-size: 1rem;
  color: var(--primary);
}
.nav__mobile a:last-child { border-bottom: none; }
.nav__mobile a.active { color: var(--accent); }

@media (min-width: 768px) {
  .nav__menu { display: flex; }
  .nav__hamburger { display: none; }
}

/* ── 7. Footer ────────────────────────────────────────────── */
.footer {
  background: var(--primary);
  color: var(--gray-light);
  padding-block: 4rem 2rem;
}

.footer__grid {
  display: grid;
  grid-template-columns: 1fr;
  gap: 2.5rem;
  margin-bottom: 3rem;
}

@media (min-width: 768px) {
  .footer__grid { grid-template-columns: 2fr 1fr 1fr 1fr; }
}

.footer__brand img { height: 40px; filter: brightness(0) invert(1); margin-bottom: 1rem; }
.footer__brand p { font-size: 0.875rem; line-height: 1.7; max-width: 28ch; }

.footer__col h4 {
  color: var(--white);
  font-size: 0.8rem;
  letter-spacing: 0.12em;
  text-transform: uppercase;
  margin-bottom: 1rem;
}
.footer__col a {
  display: block;
  font-size: 0.875rem;
  color: var(--gray-light);
  padding-block: 0.3rem;
  transition: color var(--transition);
}
.footer__col a:hover { color: var(--white); }

.footer__bottom {
  border-top: 1px solid rgba(255,255,255,0.1);
  padding-top: 1.5rem;
  display: flex;
  flex-wrap: wrap;
  gap: 1rem;
  justify-content: space-between;
  font-size: 0.8rem;
  color: var(--gray-mid);
}

/* ── 8. Hero ──────────────────────────────────────────────── */
.hero {
  min-height: 100vh;
  display: flex;
  align-items: center;
  background: var(--primary);
  color: var(--white);
  position: relative;
  overflow: hidden;
  padding-top: var(--nav-h);
}

.hero__bg {
  position: absolute;
  inset: 0;
  background-image: url('../assets/images/hero-bg.jpg');
  background-size: cover;
  background-position: center;
  opacity: 0.18;
}

.hero__content {
  position: relative;
  z-index: 1;
  max-width: 780px;
  padding-block: 6rem 5rem;
}

.hero__eyebrow {
  display: inline-flex;
  align-items: center;
  gap: 0.5rem;
  font-size: 0.75rem;
  font-weight: 700;
  letter-spacing: 0.15em;
  text-transform: uppercase;
  color: var(--accent);
  margin-bottom: 1.25rem;
}
.hero__eyebrow::before {
  content: '';
  display: block;
  width: 32px;
  height: 2px;
  background: var(--accent);
}

.hero h1 { color: var(--white); margin-bottom: 1.25rem; }
.hero h1 span { color: var(--accent); }

.hero__sub {
  font-size: clamp(1rem, 2vw, 1.2rem);
  color: rgba(255,255,255,0.7);
  margin-bottom: 2.5rem;
  max-width: 55ch;
}

.hero__ctas { display: flex; flex-wrap: wrap; gap: 1rem; }

/* ── 9. Stats Strip ───────────────────────────────────────── */
.stats {
  background: var(--accent);
  color: var(--white);
  padding-block: 3rem;
}

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

.stats__item strong {
  display: block;
  font-family: var(--font-head);
  font-size: clamp(2rem, 4vw, 3rem);
  font-weight: 700;
  line-height: 1;
  margin-bottom: 0.35rem;
}

.stats__item span {
  font-size: 0.875rem;
  letter-spacing: 0.05em;
  opacity: 0.85;
}

/* ── 10. Cards ────────────────────────────────────────────── */
.card {
  background: var(--white);
  border: 1px solid var(--gray-border);
  border-radius: var(--radius);
  padding: 2rem;
  transition: box-shadow var(--transition), transform var(--transition);
}
.card:hover {
  box-shadow: 0 8px 32px rgba(0,0,0,0.08);
  transform: translateY(-2px);
}

.card__icon {
  width: 48px;
  height: 48px;
  display: flex;
  align-items: center;
  justify-content: center;
  background: var(--off-white);
  border-radius: var(--radius);
  margin-bottom: 1.25rem;
  color: var(--accent);
}
.card__icon svg { width: 24px; height: 24px; }

.card h3 { margin-bottom: 0.5rem; font-size: 1.1rem; }
.card p { font-size: 0.9rem; color: var(--gray-mid); }

/* Industry cards */
.ind-card {
  position: relative;
  border-radius: var(--radius);
  overflow: hidden;
  aspect-ratio: 4/3;
  background: var(--primary-light);
}
.ind-card img {
  width: 100%;
  height: 100%;
  object-fit: cover;
  opacity: 0.55;
  transition: opacity var(--transition), transform 0.4s ease;
}
.ind-card:hover img { opacity: 0.4; transform: scale(1.04); }

.ind-card__label {
  position: absolute;
  bottom: 0;
  left: 0;
  right: 0;
  padding: 1.25rem 1.25rem 1rem;
  background: linear-gradient(to top, rgba(0,0,0,0.7) 0%, transparent 100%);
  color: var(--white);
  font-family: var(--font-head);
  font-weight: 700;
  font-size: 1.05rem;
}

/* ── 11. Section Headers ──────────────────────────────────── */
.section-head { margin-bottom: 3rem; }
.section-head h2 { margin-bottom: 0.75rem; }
.section-head p { color: var(--gray-mid); font-size: 1.05rem; }

/* ── 12. Partner Logos ────────────────────────────────────── */
.logos-grid {
  display: grid;
  grid-template-columns: repeat(2, 1fr);
  gap: 2rem 3rem;
  align-items: center;
}

@media (min-width: 600px) { .logos-grid { grid-template-columns: repeat(3, 1fr); } }
@media (min-width: 900px) { .logos-grid { grid-template-columns: repeat(6, 1fr); } }

.logos-grid img {
  max-height: 52px;
  width: auto;
  margin: auto;
  filter: grayscale(100%);
  opacity: 0.65;
  transition: filter var(--transition), opacity var(--transition);
}
.logos-grid img:hover { filter: grayscale(0%); opacity: 1; }

/* ── 13. Quality Strip ────────────────────────────────────── */
.quality-strip {
  display: grid;
  grid-template-columns: 1fr;
  gap: 2rem;
  text-align: center;
}
@media (min-width: 768px) { .quality-strip { grid-template-columns: repeat(3, 1fr); } }

.quality-strip__item svg {
  width: 40px;
  height: 40px;
  color: var(--accent);
  margin: 0 auto 1rem;
}
.quality-strip__item strong {
  display: block;
  font-family: var(--font-head);
  font-weight: 700;
  font-size: 1rem;
  margin-bottom: 0.25rem;
}
.quality-strip__item span { font-size: 0.875rem; color: var(--gray-mid); }

/* ── 14. Gov Contracting Callout ──────────────────────────── */
.gov-callout {
  display: grid;
  grid-template-columns: 1fr;
  gap: 2rem;
  align-items: center;
  background: var(--primary);
  color: var(--white);
  border-radius: var(--radius);
  padding: 3rem;
}
@media (min-width: 768px) { .gov-callout { grid-template-columns: 1fr auto; } }
.gov-callout h2 { color: var(--white); margin-bottom: 0.75rem; }
.gov-callout p { color: rgba(255,255,255,0.75); max-width: 55ch; }

/* ── 15. Footer CTA Banner ────────────────────────────────── */
.cta-banner {
  background: var(--accent);
  color: var(--white);
  text-align: center;
  padding-block: 4rem;
}
.cta-banner h2 { color: var(--white); margin-bottom: 1rem; }
.cta-banner p { color: rgba(255,255,255,0.85); margin: 0 auto 2rem; font-size: 1.05rem; }

/* ── 16. Services Page ────────────────────────────────────── */
.services-layout {
  display: grid;
  grid-template-columns: 1fr;
  gap: 3rem;
  align-items: start;
}
@media (min-width: 1024px) {
  .services-layout { grid-template-columns: 240px 1fr; }
}

.services-toc {
  position: sticky;
  top: calc(var(--nav-h) + 2rem);
  background: var(--off-white);
  border-radius: var(--radius);
  padding: 1.5rem;
  border: 1px solid var(--gray-border);
}
.services-toc h4 {
  font-size: 0.7rem;
  letter-spacing: 0.15em;
  text-transform: uppercase;
  color: var(--gray-mid);
  margin-bottom: 1rem;
}
.services-toc .toc-group { margin-bottom: 1.25rem; }
.services-toc .toc-group-label {
  font-size: 0.72rem;
  font-weight: 700;
  letter-spacing: 0.1em;
  text-transform: uppercase;
  color: var(--accent);
  margin-bottom: 0.4rem;
}
.services-toc a {
  display: block;
  font-size: 0.85rem;
  padding: 0.3rem 0;
  color: var(--primary);
  transition: color var(--transition);
}
.services-toc a:hover { color: var(--accent); }

.service-section { margin-bottom: 4rem; scroll-margin-top: calc(var(--nav-h) + 2rem); }
.service-section:last-child { margin-bottom: 0; }
.service-section h2 {
  padding-bottom: 0.75rem;
  border-bottom: 2px solid var(--gray-border);
  margin-bottom: 1.5rem;
}
.service-section h2 span { color: var(--accent); }
.service-section h3 {
  margin-top: 2rem;
  margin-bottom: 0.75rem;
}
.service-section p { color: var(--gray-mid); margin-bottom: 1rem; max-width: 70ch; }

.service-section ul {
  list-style: disc;
  padding-left: 1.25rem;
  color: var(--gray-mid);
  font-size: 0.95rem;
}
.service-section ul li { padding-block: 0.25rem; }

.service-group { margin-bottom: 3rem; }
.service-group__label {
  font-size: 0.7rem;
  font-weight: 700;
  letter-spacing: 0.15em;
  text-transform: uppercase;
  color: var(--accent);
  margin-bottom: 0.5rem;
}

/* ── 17. Machines Page ────────────────────────────────────── */
.machines-table-wrap { overflow-x: auto; }
table {
  width: 100%;
  border-collapse: collapse;
  font-size: 0.9rem;
}
thead th {
  background: var(--primary);
  color: var(--white);
  text-align: left;
  padding: 0.85rem 1rem;
  font-family: var(--font-head);
  font-size: 0.8rem;
  letter-spacing: 0.05em;
  text-transform: uppercase;
}
tbody tr:nth-child(even) { background: var(--off-white); }
tbody td {
  padding: 0.75rem 1rem;
  border-bottom: 1px solid var(--gray-border);
  color: var(--gray-mid);
  vertical-align: top;
}
tbody td:first-child { color: var(--primary); font-weight: 600; }

.table-section { margin-bottom: 3rem; }
.table-section h3 {
  font-size: 1rem;
  font-weight: 700;
  letter-spacing: 0.08em;
  text-transform: uppercase;
  color: var(--gray-mid);
  margin-bottom: 0.75rem;
  padding-bottom: 0.5rem;
  border-bottom: 2px solid var(--accent);
  display: inline-block;
}

/* ── 18. Contact Page ─────────────────────────────────────── */
.contact-layout {
  display: grid;
  grid-template-columns: 1fr;
  gap: 3rem;
}
@media (min-width: 768px) { .contact-layout { grid-template-columns: 1fr 1fr; } }

.contact-form label {
  display: block;
  font-size: 0.85rem;
  font-weight: 600;
  margin-bottom: 0.4rem;
  color: var(--primary);
}
.contact-form input,
.contact-form select,
.contact-form textarea {
  width: 100%;
  padding: 0.75rem 1rem;
  border: 1px solid var(--gray-border);
  border-radius: var(--radius);
  font-family: var(--font-body);
  font-size: 0.95rem;
  color: var(--primary);
  background: var(--white);
  transition: border-color var(--transition);
  margin-bottom: 1.25rem;
}
.contact-form input:focus,
.contact-form textarea:focus {
  outline: none;
  border-color: var(--accent);
}
.contact-form textarea { resize: vertical; min-height: 140px; }

.contact-info__item {
  display: flex;
  gap: 1rem;
  margin-bottom: 1.5rem;
}
.contact-info__icon {
  flex-shrink: 0;
  width: 40px;
  height: 40px;
  background: var(--off-white);
  border-radius: var(--radius);
  display: flex;
  align-items: center;
  justify-content: center;
  color: var(--accent);
}
.contact-info__icon svg { width: 18px; height: 18px; }
.contact-info__text strong { display: block; font-size: 0.85rem; color: var(--gray-mid); margin-bottom: 0.15rem; }
.contact-info__text span { font-size: 0.95rem; color: var(--primary); }

.facility-note {
  background: var(--off-white);
  border: 1px solid var(--gray-border);
  border-radius: var(--radius);
  height: 280px;
  display: flex;
  align-items: center;
  justify-content: center;
  color: var(--gray-mid);
  font-size: 0.875rem;
  text-align: center;
  padding: 1rem;
  margin-top: 1.5rem;
}

/* ── 19. About Page ───────────────────────────────────────── */
.values-grid {
  display: grid;
  grid-template-columns: 1fr;
  gap: 1.5rem;
}
@media (min-width: 768px) { .values-grid { grid-template-columns: repeat(3, 1fr); } }

.value-card {
  padding: 2rem;
  border-left: 3px solid var(--accent);
  background: var(--white);
  border-radius: 0 var(--radius) var(--radius) 0;
}
.value-card h3 { margin-bottom: 0.5rem; color: var(--primary); }
.value-card p { font-size: 0.9rem; color: var(--gray-mid); }

.cert-list {
  display: grid;
  grid-template-columns: 1fr;
  gap: 1rem;
}
@media (min-width: 600px) { .cert-list { grid-template-columns: 1fr 1fr; } }
.cert-item {
  display: flex;
  align-items: flex-start;
  gap: 0.75rem;
  padding: 1.25rem;
  background: var(--white);
  border: 1px solid var(--gray-border);
  border-radius: var(--radius);
}
.cert-item svg { flex-shrink: 0; width: 20px; height: 20px; color: var(--accent); margin-top: 2px; }
.cert-item div strong { display: block; font-size: 0.95rem; margin-bottom: 0.2rem; }
.cert-item div span { font-size: 0.85rem; color: var(--gray-mid); }

/* ── 20. Page Hero (inner pages) ──────────────────────────── */
.page-hero {
  background: var(--primary);
  color: var(--white);
  padding-block: 5rem 4rem;
  padding-top: calc(var(--nav-h) + 4rem);
}
.page-hero .section-label { color: var(--accent); }
.page-hero h1 { color: var(--white); margin-bottom: 1rem; }
.page-hero p { color: rgba(255,255,255,0.7); font-size: 1.1rem; max-width: 60ch; }

/* ── 21. Breadcrumb ───────────────────────────────────────── */
.breadcrumb {
  font-size: 0.8rem;
  color: rgba(255,255,255,0.5);
  margin-bottom: 1rem;
  display: flex;
  gap: 0.5rem;
}
.breadcrumb a { color: rgba(255,255,255,0.6); transition: color var(--transition); }
.breadcrumb a:hover { color: var(--white); }
.breadcrumb span { color: rgba(255,255,255,0.35); }

/* ── 22. Focus / Accessibility ────────────────────────────── */
:focus-visible {
  outline: 2px solid var(--accent);
  outline-offset: 3px;
}

/* ── 23. Responsive Tweaks ────────────────────────────────── */
@media (max-width: 767px) {
  .section { padding-block: 3.5rem; }
  .hero__content { padding-block: 4rem 3rem; }
  .gov-callout { padding: 2rem; }
  .stats__grid { grid-template-columns: 1fr; gap: 1.5rem; }
}

@media (max-width: 480px) {
  .container { padding-inline: 1rem; }
  .hero__ctas { flex-direction: column; }
  .btn { width: 100%; justify-content: center; }
  .grid-4 { grid-template-columns: 1fr; }
  .logos-grid { grid-template-columns: repeat(2, 1fr); }
}