/* ==========================================================================
   Northgate Services — Design Tokens & Base Styles
   Palette: near-black / near-white greyscale + one hazard-orange accent
   Type: Space Grotesk (display) / Inter (body) / IBM Plex Mono (labels)
   ========================================================================== */

:root {
  /* Color */
  --color-ink: #0a0a0a;
  --color-ink-soft: #1a1a1a;
  --color-grey-900: #232323;
  --color-grey-700: #4a4a4a;
  --color-grey-500: #7a7a7a;
  --color-grey-300: #c7c7c7;
  --color-grey-100: #ececec;
  --color-paper: #fafaf9;
  --color-white: #ffffff;
  --color-orange: #ff5c00;
  --color-orange-dark: #cc4a00;
  --color-orange-tint: #ffe4d1;

  /* Surfaces (light theme default) */
  --bg: var(--color-paper);
  --bg-raised: var(--color-white);
  --bg-inverse: var(--color-ink);
  --text: var(--color-ink);
  --text-muted: var(--color-grey-700);
  --text-on-inverse: var(--color-paper);
  --border: var(--color-grey-300);

  /* Type */
  --font-display: "Space Grotesk", "Arial Narrow", sans-serif;
  --font-body: "Inter", -apple-system, BlinkMacSystemFont, "Segoe UI", sans-serif;
  --font-mono: "IBM Plex Mono", "Courier New", monospace;

  /* Spacing scale */
  --space-1: 0.5rem;
  --space-2: 0.75rem;
  --space-3: 1.25rem;
  --space-4: 2rem;
  --space-5: 3.25rem;
  --space-6: 5rem;

  /* Layout */
  --max-width: 1180px;
  --radius: 2px;
  --tab-cut: 14px; /* the corner-cut signature */
}

/* ---------- Reset ---------- */
*, *::before, *::after { box-sizing: border-box; }
html { -webkit-text-size-adjust: 100%; scroll-behavior: smooth; }
body {
  margin: 0;
  font-family: var(--font-body);
  background: var(--bg);
  color: var(--text);
  line-height: 1.55;
  font-size: 16px;
  -webkit-font-smoothing: antialiased;
}
img { max-width: 100%; display: block; }
a { color: inherit; text-decoration: none; }
ul, ol { padding: 0; margin: 0; list-style: none; }
h1, h2, h3, h4 { font-family: var(--font-display); margin: 0 0 var(--space-2); line-height: 1.1; letter-spacing: -0.01em; }
p { margin: 0 0 var(--space-2); }
button { font-family: inherit; }

@media (prefers-reduced-motion: reduce) {
  html { scroll-behavior: auto; }
  * { animation-duration: 0.01ms !important; transition-duration: 0.01ms !important; }
}

:focus-visible {
  outline: 3px solid var(--color-orange);
  outline-offset: 2px;
}

.container {
  max-width: var(--max-width);
  margin-inline: auto;
  padding-inline: var(--space-3);
}

/* ---------- Eyebrow / tag label (signature type treatment) ---------- */
.tag {
  display: inline-flex;
  align-items: center;
  gap: 0.4em;
  font-family: var(--font-mono);
  font-size: 0.72rem;
  letter-spacing: 0.12em;
  text-transform: uppercase;
  color: var(--color-orange-dark);
}
.tag::before {
  content: "";
  width: 8px;
  height: 8px;
  background: var(--color-orange);
  flex-shrink: 0;
}

/* ---------- Header / Nav ---------- */
.site-header {
  position: sticky;
  top: 0;
  z-index: 50;
  background: var(--bg);
  border-bottom: 1px solid var(--border);
}
.nav {
  display: flex;
  align-items: center;
  justify-content: space-between;
  padding-block: var(--space-2);
}
.brand {
  display: flex;
  align-items: center;
  gap: var(--space-2);
  font-family: var(--font-display);
  font-weight: 700;
  font-size: 1.05rem;
  letter-spacing: -0.01em;
}
.brand-mark {
  height: 42px;
  width: auto;
  flex-shrink: 0;
}

/* Logo needs a light tile behind it wherever it sits on a dark surface,
   since the mark itself is solid black/white artwork with no background. */
.logo-tile {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  background: var(--color-paper);
  padding: 6px 10px;
  flex-shrink: 0;
  clip-path: polygon(0 0, 100% 0, 100% 100%, 8px 100%, 0 calc(100% - 8px));
}
.logo-tile .brand-mark { height: 30px; }
.footer-brand .logo-tile .brand-mark { height: 24px; }
.nav-toggle {
  display: flex;
  align-items: center;
  justify-content: center;
  width: 44px;
  height: 44px;
  background: none;
  border: 1px solid var(--border);
  cursor: pointer;
}
.nav-toggle .bar {
  position: relative;
  width: 20px;
  height: 2px;
  background: var(--text);
}
.nav-toggle .bar::before,
.nav-toggle .bar::after {
  content: "";
  position: absolute;
  left: 0;
  width: 20px;
  height: 2px;
  background: var(--text);
  transition: transform 0.2s ease;
}
.nav-toggle .bar::before { top: -6px; }
.nav-toggle .bar::after { top: 6px; }

.nav-links {
  position: fixed;
  inset: 0 0 0 30%;
  top: 65px;
  background: var(--bg-inverse);
  color: var(--text-on-inverse);
  display: flex;
  flex-direction: column;
  padding: var(--space-4) var(--space-3);
  gap: var(--space-1);
  transform: translateX(100%);
  transition: transform 0.28s ease;
}
.nav-links.is-open { transform: translateX(0); }
.nav-links a {
  font-family: var(--font-display);
  font-size: 1.4rem;
  padding: var(--space-2) 0;
  border-bottom: 1px solid rgba(250,250,249,0.15);
}
.nav-links a[aria-current="page"] { color: var(--color-orange); }
.nav-links .btn { margin-top: var(--space-3); align-self: flex-start; }

@media (min-width: 900px) {
  .nav-toggle { display: none; }
  .nav-links {
    position: static;
    flex-direction: row;
    align-items: center;
    background: none;
    color: var(--text);
    padding: 0;
    transform: none;
    gap: var(--space-4);
  }
  .nav-links a {
    font-family: var(--font-body);
    font-size: 0.95rem;
    font-weight: 500;
    border-bottom: none;
    padding: 0.25rem 0;
    position: relative;
  }
  .nav-links a:not(.btn)::after {
    content: "";
    position: absolute;
    left: 0; right: 100%;
    bottom: -4px;
    height: 2px;
    background: var(--color-orange);
    transition: right 0.2s ease;
  }
  .nav-links a:not(.btn):hover::after,
  .nav-links a[aria-current="page"]::after { right: 0; }
  .nav-links a[aria-current="page"] { color: var(--text); }
  .nav-links .btn { margin-top: 0; }
}

/* ---------- Buttons ---------- */
.btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: 0.5em;
  padding: 0.85em 1.4em;
  font-family: var(--font-body);
  font-weight: 600;
  font-size: 0.95rem;
  border: 2px solid var(--color-orange);
  background: var(--color-orange);
  color: var(--color-ink);
  cursor: pointer;
  clip-path: polygon(0 0, 100% 0, 100% 100%, var(--tab-cut) 100%, 0 calc(100% - var(--tab-cut)));
  transition: background 0.15s ease, color 0.15s ease, transform 0.1s ease;
}
.btn:hover { background: var(--color-orange-dark); border-color: var(--color-orange-dark); transform: translateY(-1px); }
.btn:active { transform: translateY(0); }
.btn-outline {
  background: transparent;
  color: var(--text-on-inverse);
  border-color: currentColor;
}
.btn-outline:hover { background: var(--color-orange); color: var(--color-ink); border-color: var(--color-orange); }
.on-light.btn-outline { color: var(--text); }

/* ---------- Hero ---------- */
.hero {
  background: var(--bg-inverse);
  color: var(--text-on-inverse);
  padding-block: var(--space-6) var(--space-5);
  background-image:
    linear-gradient(rgba(255,92,0,0.08) 1px, transparent 1px),
    linear-gradient(90deg, rgba(255,92,0,0.08) 1px, transparent 1px);
  background-size: 34px 34px;
}
.hero h1 {
  font-size: clamp(2.1rem, 8vw, 3.6rem);
  max-width: 14ch;
}
.hero p.lede {
  font-size: 1.05rem;
  color: var(--color-grey-300);
  max-width: 46ch;
  margin-bottom: var(--space-4);
}
.hero .tag { color: var(--color-orange); margin-bottom: var(--space-2); }
.hero-actions { display: flex; flex-wrap: wrap; gap: var(--space-2); }

/* Two-column hero: text beside the logo on larger screens.
   Image column is hidden on mobile rather than stacked, per request. */
.hero-grid {
  display: grid;
  grid-template-columns: 1fr;
  gap: var(--space-4);
}
.hero-image { display: none; }

@media (min-width: 760px) {
  .hero-grid {
    grid-template-columns: minmax(0, 3fr) minmax(0, 2fr);
    align-items: center;
    gap: var(--space-5);
  }
  .hero-image {
    display: flex;
    align-items: center;
    justify-content: center;
  }
}

/* The logo is solid black/white artwork with a transparent background,
   so it needs a light panel behind it to stay visible on the dark hero. */
.hero-logo-tile {
  background: var(--color-paper);
  padding: var(--space-4);
  width: 100%;
  max-width: 360px;
  clip-path: polygon(0 0, 100% 0, 100% 100%, var(--tab-cut) 100%, 0 calc(100% - var(--tab-cut)));
}
.hero-logo-tile img {
  width: 100%;
  height: auto;
  display: block;
}

/* ---------- Page header (non-home pages) ---------- */
.page-head {
  background: var(--bg-inverse);
  color: var(--text-on-inverse);
  padding-block: var(--space-5) var(--space-4);
}
.page-head h1 { font-size: clamp(1.9rem, 6vw, 2.8rem); }
.page-head .tag { color: var(--color-orange); margin-bottom: var(--space-2); }
.page-head p { color: var(--color-grey-300); max-width: 55ch; }

/* ---------- Sections ---------- */
.section { padding-block: var(--space-5); }
.section-head { margin-bottom: var(--space-4); max-width: 62ch; }
.section-head h2 { font-size: clamp(1.5rem, 5vw, 2.1rem); }
.section-alt { background: var(--color-grey-100); }

/* ---------- Cards / grids ---------- */
.grid { display: grid; gap: var(--space-3); }
.grid-2 { grid-template-columns: 1fr; }
.grid-3 { grid-template-columns: 1fr; }
@media (min-width: 640px) { .grid-2 { grid-template-columns: 1fr 1fr; } }
@media (min-width: 760px) { .grid-3 { grid-template-columns: repeat(3, 1fr); } }

.card {
  background: var(--bg-raised);
  border: 1px solid var(--border);
  padding: var(--space-3);
  clip-path: polygon(0 0, 100% 0, 100% calc(100% - var(--tab-cut)), calc(100% - var(--tab-cut)) 100%, 0 100%);
}
.card .tag { margin-bottom: var(--space-2); }
.card h3 { font-size: 1.15rem; margin-bottom: 0.4em; }
.card p { color: var(--text-muted); margin-bottom: 0; font-size: 0.95rem; }

/* ---------- Stats strip ---------- */
.stats {
  display: grid;
  grid-template-columns: repeat(2, 1fr);
  gap: var(--space-3);
}
@media (min-width: 640px) { .stats { grid-template-columns: repeat(4, 1fr); } }
.stat strong {
  display: block;
  font-family: var(--font-display);
  font-size: 2rem;
  color: var(--color-orange-dark);
}
.stat span { font-size: 0.82rem; color: var(--text-muted); }

/* ---------- Gallery ---------- */
.gallery-grid {
  display: grid;
  grid-template-columns: repeat(2, 1fr);
  gap: var(--space-1);
}
@media (min-width: 640px) { .gallery-grid { grid-template-columns: repeat(3, 1fr); gap: var(--space-2); } }
@media (min-width: 1000px) { .gallery-grid { grid-template-columns: repeat(4, 1fr); } }

.gallery-item {
  position: relative;
  aspect-ratio: 1 / 1;
  overflow: hidden;
  background: var(--color-grey-900);
  cursor: pointer;
  border: none;
  padding: 0;
  display: block;
  width: 100%;
}
.gallery-item img {
  width: 100%;
  height: 100%;
  object-fit: cover;
  transition: transform 0.35s ease;
}
.gallery-item:hover img, .gallery-item:focus-visible img { transform: scale(1.06); }
.gallery-item .cap {
  position: absolute;
  left: 0; right: 0; bottom: 0;
  padding: var(--space-1) var(--space-2);
  background: linear-gradient(transparent, rgba(0,0,0,0.75));
  color: var(--color-paper);
  font-family: var(--font-mono);
  font-size: 0.72rem;
  letter-spacing: 0.06em;
  text-transform: uppercase;
  opacity: 0;
  transition: opacity 0.2s ease;
}
.gallery-item:hover .cap, .gallery-item:focus-visible .cap { opacity: 1; }

.filter-bar {
  display: flex;
  gap: 0.5rem;
  flex-wrap: wrap;
  margin-bottom: var(--space-3);
}
.filter-btn {
  font-family: var(--font-mono);
  font-size: 0.75rem;
  letter-spacing: 0.08em;
  text-transform: uppercase;
  padding: 0.55em 0.9em;
  border: 1px solid var(--border);
  background: var(--bg-raised);
  cursor: pointer;
  color: var(--text-muted);
}
.filter-btn:hover { border-color: var(--color-orange); color: var(--text); }
.filter-btn.is-active {
  background: var(--color-ink);
  border-color: var(--color-ink);
  color: var(--color-paper);
}

/* Lightbox */
.lightbox {
  position: fixed;
  inset: 0;
  background: rgba(10,10,10,0.94);
  display: none;
  align-items: center;
  justify-content: center;
  z-index: 200;
  padding: var(--space-3);
}
.lightbox.is-open { display: flex; }
.lightbox img { max-width: min(90vw, 900px); max-height: 80vh; object-fit: contain; }
.lightbox-close {
  position: absolute;
  top: var(--space-3); right: var(--space-3);
  width: 44px; height: 44px;
  background: transparent;
  border: 1px solid var(--color-grey-500);
  color: var(--color-paper);
  font-size: 1.4rem;
  cursor: pointer;
}
.lightbox-cap {
  position: absolute;
  bottom: var(--space-3);
  left: 0; right: 0;
  text-align: center;
  color: var(--color-grey-300);
  font-family: var(--font-mono);
  font-size: 0.8rem;
  letter-spacing: 0.06em;
  text-transform: uppercase;
}

/* ---------- Forms ---------- */
.form-field { margin-bottom: var(--space-3); }
.form-field label {
  display: block;
  font-family: var(--font-mono);
  font-size: 0.75rem;
  letter-spacing: 0.08em;
  text-transform: uppercase;
  margin-bottom: 0.5em;
  color: var(--text-muted);
}
.form-field input,
.form-field textarea,
.form-field select {
  width: 100%;
  padding: 0.85em 0.9em;
  border: 1px solid var(--border);
  background: var(--bg-raised);
  color: var(--text);
  font-family: var(--font-body);
  font-size: 1rem;
}
.form-field input:focus,
.form-field textarea:focus,
.form-field select:focus {
  outline: 3px solid var(--color-orange);
  outline-offset: 1px;
  border-color: var(--color-orange);
}
.form-field textarea { resize: vertical; min-height: 130px; }
.form-note { font-size: 0.82rem; color: var(--text-muted); }
.hp-field { position: absolute; left: -9999px; width: 1px; height: 1px; overflow: hidden; }
.form-status {
  padding: var(--space-2);
  border: 1px solid var(--border);
  margin-bottom: var(--space-3);
  font-size: 0.9rem;
  display: none;
}
.form-status.is-visible { display: block; }
.form-status.success { border-color: var(--color-orange); background: var(--color-orange-tint); }
.form-status.error { border-color: var(--color-grey-700); background: var(--color-grey-100); }

/* ---------- Contact details ---------- */
.contact-detail { display: flex; gap: var(--space-2); margin-bottom: var(--space-3); align-items: flex-start; }
.contact-detail .icon {
  width: 40px; height: 40px;
  flex-shrink: 0;
  background: var(--color-ink);
  color: var(--color-orange);
  display: flex; align-items: center; justify-content: center;
}
.contact-detail h3 { font-size: 1rem; margin-bottom: 0.15em; }
.contact-detail p { margin: 0; color: var(--text-muted); font-size: 0.92rem; }
.contact-detail a:hover { color: var(--color-orange-dark); }

.map-frame { border: 1px solid var(--border); width: 100%; height: 320px; }

/* ---------- Footer ---------- */
.site-footer {
  background: var(--bg-inverse);
  color: var(--color-grey-300);
  padding-block: var(--space-5) var(--space-3);
}
.footer-grid {
  display: grid;
  gap: var(--space-4);
  margin-bottom: var(--space-4);
}
@media (min-width: 760px) { .footer-grid { grid-template-columns: 1.4fr 1fr 1fr; } }
.footer-brand { display: flex; align-items: center; gap: var(--space-2); margin-bottom: var(--space-2); }
.footer-brand span { font-family: var(--font-display); color: var(--color-paper); font-size: 1.1rem; }
.site-footer h4 {
  font-family: var(--font-mono);
  font-size: 0.75rem;
  letter-spacing: 0.1em;
  text-transform: uppercase;
  color: var(--color-orange);
  margin-bottom: var(--space-2);
}
.site-footer a:hover { color: var(--color-paper); }
.site-footer li { margin-bottom: 0.5em; font-size: 0.92rem; }
.footer-bottom {
  border-top: 1px solid rgba(250,250,249,0.12);
  padding-top: var(--space-3);
  display: flex;
  flex-wrap: wrap;
  justify-content: space-between;
  gap: var(--space-1);
  font-size: 0.8rem;
  color: var(--color-grey-500);
}

/* ---------- Utility ---------- */
.visually-hidden {
  position: absolute; width: 1px; height: 1px;
  overflow: hidden; clip: rect(0,0,0,0); white-space: nowrap;
}
.skip-link {
  position: absolute;
  left: -9999px;
  top: 0;
  background: var(--color-orange);
  color: var(--color-ink);
  padding: 0.75em 1.2em;
  z-index: 999;
  font-weight: 600;
}
.skip-link:focus { left: var(--space-2); top: var(--space-2); }