/* Northline Building Co. — trades/construction template
   Palette: charcoal / concrete / safety yellow / rust
   Type: Barlow Condensed (display, industrial) · Inter (body)
*/

:root {
  --char: #17191b;
  --char-2: #202327;
  --concrete: #eceae4;
  --yellow: #f3b52c;
  --rust: #b3502a;
  --stone: #8b9198;

  --display: 'Barlow Condensed', 'Arial Narrow', sans-serif;
  --body: 'Inter', system-ui, sans-serif;
  --gutter: clamp(1.25rem, 5vw, 5rem);
}

* { box-sizing: border-box; }
html { scroll-behavior: smooth; }
body {
  margin: 0;
  background: var(--concrete);
  color: var(--char);
  font-family: var(--body);
  line-height: 1.6;
  -webkit-font-smoothing: antialiased;
}
img { max-width: 100%; display: block; }
a { color: inherit; }
.wrap { width: min(1200px, 100% - var(--gutter) * 2); margin-inline: auto; }

.kicker {
  font-family: var(--body); font-weight: 700; font-size: 0.75rem;
  letter-spacing: 0.16em; text-transform: uppercase; color: var(--rust);
  margin: 0 0 0.75rem;
}

.btn {
  display: inline-block; font-family: var(--body); font-weight: 700;
  font-size: 0.875rem; letter-spacing: 0.02em; padding: 0.9rem 1.6rem;
  text-decoration: none; border: 2px solid transparent; clip-path: polygon(0 0, 100% 0, 96% 100%, 0% 100%);
}
.btn-primary { background: var(--yellow); color: var(--char); }
.btn-primary:hover { background: #ffc94d; }
.btn-ghost { border-color: rgba(255,255,255,0.6); color: #fff; }
.btn-ghost:hover { background: rgba(255,255,255,0.12); }

.demo-flag { background: var(--char); color: var(--concrete); font-size: 0.75rem; text-align: center; padding: 0.55rem 1rem; }
.demo-flag strong { color: var(--yellow); }
.demo-flag a { margin-left: 0.75rem; text-decoration: underline; color: var(--concrete); }

/* nav */
.nav { position: sticky; top: 0; z-index: 50; background: var(--char); border-bottom: 3px solid var(--yellow); }
.nav-in { display: flex; align-items: center; justify-content: space-between; padding-block: 1rem; }
.brand {
  font-family: var(--display); font-weight: 800; font-size: 1.5rem; line-height: 0.9;
  text-decoration: none; color: #fff; text-transform: uppercase; letter-spacing: 0.01em;
  display: flex; align-items: center; gap: 0.6rem;
}
.brand span { font-size: 0.65rem; font-weight: 600; letter-spacing: 0.18em; color: var(--yellow); font-family: var(--body); }
.brand .brand-text { font-size: 1.5rem; font-weight: 800; letter-spacing: 0.01em; color: #fff; font-family: var(--display); }
.brand-logo { height: 2.4rem; width: auto; display: block; }
.nav-links { display: flex; align-items: center; gap: 2rem; }
.nav-links a { text-decoration: none; font-weight: 600; font-size: 0.9375rem; color: var(--concrete); text-transform: uppercase; letter-spacing: 0.03em; }
.nav-links a:hover { color: var(--yellow); }
.nav-cta { background: var(--yellow); color: var(--char) !important; padding: 0.6rem 1.2rem; clip-path: polygon(0 0, 100% 0, 92% 100%, 0% 100%); }
.nav-cta:hover { background: #ffc94d !important; }
.nav-toggle { display: none; }

/* hero */
.hero { position: relative; min-height: min(90vh, 760px); display: flex; align-items: flex-end; background-size: cover; background-position: center; color: #fff; }
.hero::before { content: ''; position: absolute; inset: 0; background: linear-gradient(100deg, rgba(10,10,10,0.92) 0%, rgba(10,10,10,0.6) 45%, rgba(10,10,10,0.25) 80%); }
.hero-in { position: relative; padding-bottom: clamp(3rem, 8vh, 5.5rem); max-width: 680px; }
.hero h1 {
  font-family: var(--display); font-weight: 800; text-transform: uppercase;
  font-size: clamp(2.75rem, 8vw, 5.5rem); line-height: 0.88; letter-spacing: -0.01em;
  margin: 0 0 1.2rem;
}
.hero .lead { font-size: 1.125rem; max-width: 44ch; color: rgba(255,255,255,0.85); margin: 0 0 1.75rem; }
.hero-actions { display: flex; gap: 1rem; flex-wrap: wrap; }

/* trust strip */
.trust { background: var(--char-2); border-bottom: 1px solid rgba(255,255,255,0.08); }
.trust-in { display: grid; grid-template-columns: repeat(4, 1fr); padding-block: 1.75rem; gap: 1rem; }
.trust-in div { text-align: center; border-left: 1px solid rgba(255,255,255,0.12); }
.trust-in div:first-child { border-left: none; }
.trust-in b { display: block; font-family: var(--display); font-size: 2rem; color: var(--yellow); line-height: 1; }
.trust-in span { font-size: 0.75rem; letter-spacing: 0.05em; color: var(--stone); text-transform: uppercase; }

/* services */
.services { padding-block: clamp(4rem, 9vw, 6.5rem); }
.section-head { max-width: 620px; margin: 0 0 clamp(2.5rem, 6vw, 3.5rem); }
.section-head h2 { font-family: var(--display); font-weight: 700; text-transform: uppercase; font-size: clamp(2rem, 4.5vw, 3rem); margin: 0; line-height: 1; }
.services-grid { display: grid; grid-template-columns: repeat(auto-fit, minmax(230px, 1fr)); gap: 1px; background: rgba(23,25,27,0.12); border: 1px solid rgba(23,25,27,0.12); }
.service-card { background: var(--concrete); padding: 2rem 1.75rem; }
.service-num { font-family: var(--display); font-size: 0.9375rem; font-weight: 700; color: var(--rust); }
.service-card h3 { font-family: var(--display); font-weight: 700; text-transform: uppercase; font-size: 1.4rem; margin: 0.5rem 0 0.6rem; }
.service-card p { margin: 0; color: var(--char-2); font-size: 0.9375rem; }

/* feature band */
.feature-band { background: var(--char); color: var(--concrete); padding-block: clamp(4rem, 9vw, 6.5rem); }
.feature-in { display: grid; grid-template-columns: 1fr 1fr 1.1fr; gap: 1.25rem; align-items: stretch; }
.feature-photo { background-size: cover; background-position: center; min-height: 220px; }
.feature-photo--sm { align-self: end; height: 60%; }
.feature-copy { display: flex; flex-direction: column; justify-content: center; }
.feature-copy h2 { font-family: var(--display); font-weight: 700; text-transform: uppercase; font-size: clamp(1.6rem, 3.4vw, 2.25rem); line-height: 1.05; margin: 0 0 1rem; }
.feature-copy p { color: rgba(236,234,228,0.75); max-width: 42ch; margin: 0; }

/* process */
.process { padding-block: clamp(4rem, 9vw, 6.5rem); background: var(--concrete); }
.process-grid { display: grid; grid-template-columns: repeat(4, 1fr); gap: 1.5rem; }
.process-step span {
  display: inline-flex; align-items: center; justify-content: center;
  width: 2.75rem; height: 2.75rem; background: var(--char); color: var(--yellow);
  font-family: var(--display); font-weight: 800; font-size: 1.25rem; margin-bottom: 0.9rem;
}
.process-step h3 { font-family: var(--display); font-weight: 700; text-transform: uppercase; font-size: 1.2rem; margin: 0 0 0.4rem; }
.process-step p { margin: 0; color: var(--char-2); font-size: 0.9rem; }

/* work band */
.work { position: relative; background-size: cover; background-position: center; min-height: 420px; display: flex; align-items: center; }
.work-overlay { position: relative; width: 100%; background: linear-gradient(90deg, rgba(10,10,10,0.88) 0%, rgba(10,10,10,0.5) 60%, transparent 100%); padding-block: clamp(3rem, 8vw, 5rem); color: #fff; }
.work-overlay h2 { font-family: var(--display); font-weight: 700; text-transform: uppercase; font-size: clamp(1.75rem, 4vw, 2.75rem); margin: 0 0 1rem; max-width: 20ch; line-height: 1.05; }
.work-copy { max-width: 44ch; color: rgba(255,255,255,0.82); }

/* reviews */
.reviews { padding-block: clamp(4rem, 9vw, 6.5rem); }
.reviews-grid { display: grid; grid-template-columns: repeat(auto-fit, minmax(260px, 1fr)); gap: 1.5rem; }
.review-card { background: #fff; padding: 2rem 1.75rem; border-top: 3px solid var(--yellow); box-shadow: 0 20px 40px -28px rgba(23,25,27,0.3); }
.review-stars { color: var(--yellow); letter-spacing: 0.15em; font-size: 1.1rem; margin-bottom: 1rem; }
.review-quote { margin: 0 0 1.25rem; color: var(--char-2); font-size: 0.9375rem; }
.review-by { margin: 0; font-family: var(--display); font-weight: 700; text-transform: uppercase; font-size: 0.8125rem; letter-spacing: 0.03em; color: var(--char); }
.review-card--placeholder { border-top-style: dashed; }
.review-tag {
  display: inline-block; font-size: 0.6875rem; font-weight: 700; letter-spacing: 0.06em;
  text-transform: uppercase; color: var(--rust); background: rgba(179,80,42,0.1);
  border-radius: 999px; padding: 0.25rem 0.65rem; margin-bottom: 0.9rem;
}

/* portfolio gallery */
.portfolio { padding-block: clamp(4rem, 9vw, 6.5rem); background: var(--concrete); }
.portfolio-grid { display: grid; grid-template-columns: repeat(auto-fit, minmax(260px, 1fr)); gap: 1.5rem; }
.portfolio-item { background: #fff; border: 1px solid rgba(23,25,27,0.12); overflow: hidden; cursor: pointer; box-shadow: 0 20px 40px -28px rgba(23,25,27,0.3); }
.portfolio-item:focus-visible { outline: 2px solid var(--yellow); outline-offset: 2px; }
.portfolio-photo { aspect-ratio: 4 / 3; overflow: hidden; }
.portfolio-photo img { width: 100%; height: 100%; object-fit: cover; display: block; }
.portfolio-caption { padding: 1.1rem 1.25rem; }
.portfolio-caption h3 { font-family: var(--display); font-weight: 700; text-transform: uppercase; font-size: 1.15rem; margin: 0 0 0.4rem; color: var(--char); }
.portfolio-caption p { margin: 0; color: var(--char-2); font-size: 0.875rem; }

/* lightbox */
.lightbox {
  display: none; position: fixed; inset: 0; z-index: 100; background: rgba(10,10,10,0.92);
  align-items: center; justify-content: center; flex-direction: column; padding: 2rem;
}
.lightbox.open { display: flex; }
.lightbox-img { max-width: min(90vw, 1100px); max-height: 78vh; object-fit: contain; }
.lightbox-caption { color: rgba(255,255,255,0.85); font-size: 0.875rem; margin-top: 1rem; text-align: center; }
.lightbox-close {
  position: absolute; top: 1.25rem; right: 1.5rem; background: none; border: none;
  color: #fff; font-size: 2.25rem; line-height: 1; cursor: pointer; padding: 0.25rem 0.5rem;
}
.lightbox-nav {
  position: absolute; top: 50%; transform: translateY(-50%); background: rgba(255,255,255,0.1);
  border: none; color: #fff; font-size: 2.5rem; line-height: 1; width: 3rem; height: 3rem;
  border-radius: 50%; cursor: pointer; display: flex; align-items: center; justify-content: center;
}
.lightbox-nav:hover { background: rgba(255,255,255,0.2); }
.lightbox-prev { left: 1rem; }
.lightbox-next { right: 1rem; }

/* contact / web-enquiry form */
.contact-enquiry { padding-block: clamp(4rem, 9vw, 6.5rem); }
.contact-enquiry .section-head p { max-width: 48ch; color: var(--char-2); }

.enquiry-form { display: grid; gap: 0.9rem; max-width: 560px; }
.enquiry-form input, .enquiry-form textarea {
  width: 100%; padding: 0.85rem 1rem; border: 1px solid rgba(23,25,27,0.16);
  background: var(--concrete); color: var(--char); font-family: var(--body); font-size: 0.9375rem;
}
.enquiry-form input::placeholder, .enquiry-form textarea::placeholder { color: var(--stone); }
.enquiry-form-label { font-size: 0.8125rem; color: var(--char-2); margin: -0.35rem 0 -0.5rem; }
.enquiry-form-label span { color: var(--stone); }
.enquiry-form textarea { min-height: 100px; resize: vertical; }
.enquiry-form button { justify-self: start; }
.enquiry-form-note { font-size: 0.8125rem; color: var(--char-2); margin: 0.25rem 0 0; }

/* cta */
.cta { position: relative; background-size: cover; background-position: center; }
.cta-overlay { background: rgba(10,10,10,0.82); }
.cta-in { padding-block: clamp(4rem, 9vw, 6rem); text-align: center; color: #fff; }
.cta h2 { font-family: var(--display); font-weight: 800; text-transform: uppercase; font-size: clamp(2rem, 5vw, 3.25rem); margin: 0 0 0.75rem; }
.cta p { color: rgba(255,255,255,0.78); margin: 0 0 2rem; }
.cta-actions { display: flex; gap: 1rem; justify-content: center; flex-wrap: wrap; }

/* footer */
.site-footer { background: #0e0f10; color: rgba(236,234,228,0.55); }
.site-footer .footer-in > span > a { color: inherit; text-decoration: underline; }
.site-footer .footer-in > span > a:hover { color: var(--yellow); }
.footer-in { display: flex; flex-wrap: wrap; gap: 0.5rem 1.5rem; justify-content: space-between; padding-block: 1.5rem; font-size: 0.8125rem; }
.footer-credit a { color: var(--yellow); text-decoration: underline; }

/* responsive */
@media (max-width: 900px) {
  .feature-in { grid-template-columns: 1fr 1fr; }
  .feature-copy { grid-column: 1 / -1; order: -1; }
  .process-grid { grid-template-columns: repeat(2, 1fr); }
}
@media (max-width: 860px) {
  .trust-in { grid-template-columns: repeat(2, 1fr); }
  .trust-in div:nth-child(3) { border-left: none; }
}
@media (max-width: 720px) {
  .nav-links {
    position: fixed; inset: 60px 0 0 0; background: var(--char);
    flex-direction: column; align-items: flex-start; padding: 2rem var(--gutter);
    gap: 1.5rem; transform: translateX(100%); transition: transform 0.25s ease;
  }
  .nav-links.open { transform: translateX(0); }
  .nav-toggle { display: block; width: 34px; height: 24px; position: relative; background: none; border: none; cursor: pointer; }
  .nav-toggle span, .nav-toggle::before, .nav-toggle::after { content: ''; position: absolute; left: 0; right: 0; height: 2px; background: #fff; }
  .nav-toggle::before { top: 0; }
  .nav-toggle span { top: 11px; }
  .nav-toggle::after { bottom: 0; }
  .feature-in { grid-template-columns: 1fr; }
  .process-grid { grid-template-columns: 1fr; }
}