/* ==========================================================================
   Design tokens
   Concept: "Engineering drawing" — the visual language of lifting plans,
   load charts and technical spec sheets. Blueprint navy, hazard orange,
   hairline rules, corner registration marks, dimension-line dividers.
   ========================================================================== */
:root {
  --navy-deep:   #0A1F30;
  --navy:        #12314A;
  --navy-mid:    #1B4666;
  --steel:       #4C6274;
  --steel-light: #8FA3B0;
  --paper:       #EDF0F2;
  --paper-dim:   #DDE3E7;
  --ink:         #14202A;
  --white:       #FFFFFF;
  --orange:      #EE6C1E;
  --orange-dark: #C4530E;
  --cyan-line:   #6FB7D9;

  --font-display: 'Oswald', sans-serif;
  --font-body:    'Inter', -apple-system, BlinkMacSystemFont, sans-serif;
  --font-mono:    'IBM Plex Mono', monospace;

  --max-width: 1180px;
  --radius: 2px;
}

* { box-sizing: border-box; }
html { scroll-behavior: smooth; }
body {
  margin: 0;
  background: var(--paper);
  color: var(--ink);
  font-family: var(--font-body);
  font-size: 16px;
  line-height: 1.6;
  -webkit-font-smoothing: antialiased;
}

img { max-width: 100%; display: block; }
a { color: inherit; }

h1, h2, h3, h4 {
  font-family: var(--font-display);
  text-transform: uppercase;
  letter-spacing: 0.02em;
  line-height: 1.15;
  margin: 0 0 0.5em;
  color: var(--navy-deep);
}
h1 { font-size: clamp(2.2rem, 5vw, 3.6rem); }
h2 { font-size: clamp(1.5rem, 3vw, 2.1rem); }
h3 { font-size: 1.15rem; letter-spacing: 0.06em; }

p { margin: 0 0 1em; }
.eyebrow {
  font-family: var(--font-mono);
  font-size: 0.78rem;
  letter-spacing: 0.18em;
  text-transform: uppercase;
  color: var(--orange-dark);
  display: block;
  margin-bottom: 0.6em;
}

.container {
  max-width: var(--max-width);
  margin: 0 auto;
  padding: 0 24px;
}

/* Focus visibility */
a:focus-visible, button:focus-visible {
  outline: 2px solid var(--orange);
  outline-offset: 3px;
}

/* ==========================================================================
   Header / Nav
   ========================================================================== */
.site-header {
  background: var(--navy-deep);
  border-bottom: 1px solid var(--navy-mid);
  position: sticky;
  top: 0;
  z-index: 50;
}
.site-header .container {
  display: flex;
  align-items: center;
  justify-content: space-between;
  height: 76px;
}
.brand {
  display: flex;
  align-items: center;
  gap: 12px;
  text-decoration: none;
  color: var(--white);
}
.brand img { height: 34px; width: auto; }
.brand-name {
  font-family: var(--font-display);
  text-transform: uppercase;
  letter-spacing: 0.04em;
  font-size: 1.05rem;
}

.nav-toggle {
  display: none;
  background: none;
  border: 1px solid var(--steel-light);
  color: var(--white);
  padding: 8px 10px;
  font-family: var(--font-mono);
  font-size: 0.8rem;
  cursor: pointer;
}

.main-nav ul {
  list-style: none;
  display: flex;
  gap: 28px;
  margin: 0;
  padding: 0;
}
.main-nav a {
  text-decoration: none;
  color: var(--paper-dim);
  font-family: var(--font-mono);
  font-size: 0.82rem;
  letter-spacing: 0.06em;
  text-transform: uppercase;
  padding: 6px 0;
  border-bottom: 2px solid transparent;
  transition: color 0.15s, border-color 0.15s;
}
.main-nav a:hover,
.main-nav a[aria-current="page"] {
  color: var(--white);
  border-color: var(--orange);
}

.header-cta {
  display: flex;
  align-items: center;
  gap: 18px;
}
.tel-link {
  font-family: var(--font-mono);
  font-size: 0.95rem;
  color: var(--white);
  text-decoration: none;
  border: 1px solid var(--steel);
  padding: 8px 14px;
  border-radius: var(--radius);
  white-space: nowrap;
}
.tel-link:hover { border-color: var(--orange); color: var(--orange); }
.whatsapp-link {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  width: 38px;
  height: 38px;
  border: 1px solid var(--steel);
  border-radius: var(--radius);
  color: var(--white);
  flex-shrink: 0;
}
.whatsapp-link:hover { border-color: #25D366; color: #25D366; }

@media (max-width: 860px) {
  .main-nav {
    position: absolute;
    top: 76px;
    left: 0;
    right: 0;
    background: var(--navy-deep);
    border-bottom: 1px solid var(--navy-mid);
    display: none;
  }
  .main-nav.open { display: block; }
  .main-nav ul { flex-direction: column; gap: 0; padding: 8px 24px 20px; }
  .main-nav a { display: block; padding: 12px 0; border-bottom: 1px solid var(--navy-mid); }
  .nav-toggle { display: block; }
}

/* ==========================================================================
   Blueprint corner marks — signature motif, used to frame key sections
   ========================================================================== */
.blueprint-frame {
  position: relative;
  border: 1px solid var(--paper-dim);
  padding: clamp(24px, 4vw, 48px);
}
.blueprint-frame::before,
.blueprint-frame::after,
.blueprint-frame .corner-tl,
.blueprint-frame .corner-br {
  content: "";
  position: absolute;
  width: 18px;
  height: 18px;
  border: 2px solid var(--orange);
}
.blueprint-frame::before { top: -1px; left: -1px; border-right: none; border-bottom: none; }
.blueprint-frame::after { bottom: -1px; right: -1px; border-left: none; border-top: none; }

/* Dimension-line divider */
.dim-divider {
  display: flex;
  align-items: center;
  gap: 10px;
  margin: 3.5rem 0;
  color: var(--steel);
  font-family: var(--font-mono);
  font-size: 0.75rem;
  letter-spacing: 0.14em;
  text-transform: uppercase;
}
.dim-divider::before, .dim-divider::after {
  content: "";
  flex: 1;
  height: 1px;
  background: repeating-linear-gradient(90deg, var(--steel-light) 0 6px, transparent 6px 10px);
}

/* ==========================================================================
   Hero
   ========================================================================== */
.hero {
  background: var(--navy-deep);
  color: var(--white);
  position: relative;
  overflow: hidden;
  padding: clamp(56px, 10vw, 110px) 0 clamp(40px, 8vw, 80px);
}
.hero .container {
  display: grid;
  grid-template-columns: 1.1fr 0.9fr;
  gap: 40px;
  align-items: center;
}
.hero h1 { color: var(--white); }
.hero .eyebrow {
  max-width: 48ch;
  font-size: 0.82rem;
  letter-spacing: 0.06em;
  line-height: 1.6;
}
.hero .lede {
  font-size: 1.05rem;
  color: var(--paper-dim);
  max-width: 52ch;
}
.hero .lede strong { color: var(--white); }
.hero-features {
  list-style: none;
  padding: 0;
  margin: 1.4rem 0 0;
  display: grid;
  gap: 0.7rem;
  max-width: 52ch;
}
.hero-features li {
  position: relative;
  padding-left: 1.2rem;
  color: var(--paper-dim);
  font-size: 0.92rem;
}
.hero-features li::before {
  content: "";
  position: absolute;
  left: 0;
  top: 0.45em;
  width: 7px;
  height: 7px;
  background: var(--orange);
}
.hero-features strong { color: var(--white); }
.hero-art { width: 100%; max-width: 340px; height: auto; margin: 0 auto; display: block; }
.hero-actions { display: flex; gap: 14px; flex-wrap: wrap; margin-top: 1.6rem; }

@media (max-width: 860px) {
  .hero .container { grid-template-columns: 1fr; }
  .hero-art { max-width: 320px; margin: 0 auto; }
}

/* ==========================================================================
   Buttons
   ========================================================================== */
.btn {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  font-family: var(--font-mono);
  font-size: 0.85rem;
  letter-spacing: 0.05em;
  text-transform: uppercase;
  text-decoration: none;
  padding: 13px 22px;
  border-radius: var(--radius);
  border: 1px solid transparent;
  cursor: pointer;
  transition: transform 0.12s ease, background 0.15s, color 0.15s, border-color 0.15s;
}
.btn:hover { transform: translateY(-1px); }
.btn-primary { background: var(--orange); color: var(--navy-deep); font-weight: 600; }
.btn-primary:hover { background: #ff7d31; }
.btn-outline { border-color: var(--steel-light); color: var(--white); }
.btn-outline:hover { border-color: var(--white); }
.btn-outline.dark { color: var(--navy-deep); border-color: var(--steel); }
.btn-outline.dark:hover { border-color: var(--navy-deep); }

/* ==========================================================================
   Sections / cards / content
   ========================================================================== */
section { padding: clamp(48px, 7vw, 84px) 0; }
.section-alt { background: var(--white); }

.grid-3 { display: grid; grid-template-columns: repeat(3, 1fr); gap: 24px; }
.grid-2 { display: grid; grid-template-columns: repeat(2, 1fr); gap: 24px; }
@media (max-width: 860px) {
  .grid-3, .grid-2 { grid-template-columns: 1fr; }
}

.card {
  background: var(--white);
  border: 1px solid var(--paper-dim);
  padding: 28px;
  border-radius: var(--radius);
}
.card .index {
  font-family: var(--font-mono);
  color: var(--orange-dark);
  font-size: 0.8rem;
  letter-spacing: 0.1em;
}

.page-content {
  max-width: 72ch;
}
.page-content h2 { margin-top: 2.2em; }
.page-content h2:first-child { margin-top: 0; }
.page-content ul { padding-left: 1.2em; }
.page-content li { margin-bottom: 0.4em; }
.page-content blockquote {
  border-left: 3px solid var(--orange);
  margin: 1.5em 0;
  padding: 0.2em 0 0.2em 1.2em;
  color: var(--steel);
  font-style: italic;
}
.page-content code {
  font-family: var(--font-mono);
  background: var(--paper);
  padding: 0.1em 0.4em;
  font-size: 0.9em;
}
.page-content table {
  width: 100%;
  border-collapse: collapse;
  margin: 1.5em 0;
}
.page-content th, .page-content td {
  border: 1px solid var(--paper-dim);
  padding: 10px 12px;
  text-align: left;
  vertical-align: top;
}
.page-content thead th {
  background: var(--navy-deep);
  color: var(--white);
  font-weight: 400;
  letter-spacing: 0.04em;
}
.page-content tbody tr:nth-child(even) { background: var(--paper); }

.page-hero {
  background: var(--navy);
  color: var(--white);
  padding: 44px 0;
  border-bottom: 4px solid var(--orange);
}
.page-hero h1 { color: var(--white); margin-bottom: 0.2em; }
.page-hero .eyebrow { color: var(--cyan-line); }

/* Spec / load-chart style table */
.spec-table {
  width: 100%;
  border-collapse: collapse;
  font-family: var(--font-mono);
  font-size: 0.9rem;
  margin: 1.5em 0;
}
.spec-table caption {
  text-align: left;
  font-family: var(--font-mono);
  font-size: 0.75rem;
  letter-spacing: 0.1em;
  text-transform: uppercase;
  color: var(--steel);
  margin-bottom: 0.6em;
}
.spec-table th, .spec-table td {
  border: 1px solid var(--paper-dim);
  padding: 10px 12px;
  text-align: left;
}
.spec-table thead th {
  background: var(--navy-deep);
  color: var(--white);
  font-weight: 400;
  letter-spacing: 0.04em;
}
.spec-table tbody tr:nth-child(even) { background: var(--paper); }

/* Load-chart capability checker */
.lc-tool {
  background: var(--white);
  border: 1px solid var(--paper-dim);
  padding: 24px;
  display: grid;
  grid-template-columns: 1fr 1.1fr;
  gap: 28px;
  margin: 1.5em 0;
}
@media (max-width: 780px) {
  .lc-tool { grid-template-columns: 1fr; }
}
.lc-form {
  display: grid;
  gap: 14px;
  align-content: start;
}
.lc-field label {
  display: block;
  font-family: var(--font-mono);
  font-size: 0.75rem;
  letter-spacing: 0.08em;
  text-transform: uppercase;
  color: var(--steel);
  margin-bottom: 4px;
}
.lc-field select, .lc-field input {
  width: 100%;
  padding: 10px 12px;
  border: 1px solid var(--paper-dim);
  background: var(--paper);
  font-family: var(--font-mono);
  font-size: 0.95rem;
  color: var(--ink);
  border-radius: var(--radius);
}
.lc-field select:focus, .lc-field input:focus {
  outline: 2px solid var(--orange);
  outline-offset: 1px;
}
.lc-result {
  margin-top: 4px;
  padding: 14px 16px;
  border-left: 4px solid var(--steel-light);
  background: var(--paper);
  font-size: 0.92rem;
  line-height: 1.5;
}
.lc-result--ok { border-left-color: #1f8a4c; }
.lc-result--exceed { border-left-color: var(--orange-dark); }
.lc-result--out { border-left-color: var(--orange-dark); }
.lc-result .lc-note {
  display: block;
  margin-top: 6px;
  font-family: var(--font-mono);
  font-size: 0.78rem;
  color: var(--steel);
}
.lc-diagram {
  background: var(--paper);
  border: 1px solid var(--paper-dim);
  padding: 8px;
}
.lc-diagram svg { width: 100%; height: auto; display: block; }
.lc-caveat {
  grid-column: 1 / -1;
  font-family: var(--font-mono);
  font-size: 0.78rem;
  color: var(--steel);
  margin: 4px 0 0;
}

/* Gallery */
.gallery-grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 16px;
}
.gallery-item {
  aspect-ratio: 4/3;
  background: var(--navy);
  display: flex;
  align-items: flex-end;
  padding: 14px;
  color: var(--paper-dim);
  font-family: var(--font-mono);
  font-size: 0.78rem;
  letter-spacing: 0.05em;
  border: 1px solid var(--navy-mid);
  background-image: repeating-linear-gradient(135deg, rgba(255,255,255,0.04) 0 2px, transparent 2px 14px);
}
@media (max-width: 700px) {
  .gallery-grid { grid-template-columns: repeat(2, 1fr); }
}

/* Placeholder notice banner for editable/unfinished content */
.placeholder-note {
  background: #FFF4E9;
  border: 1px dashed var(--orange);
  color: var(--orange-dark);
  font-family: var(--font-mono);
  font-size: 0.8rem;
  padding: 12px 16px;
  margin-bottom: 2em;
  border-radius: var(--radius);
}

/* ==========================================================================
   Footer
   ========================================================================== */
.site-footer {
  background: var(--navy-deep);
  color: var(--paper-dim);
  padding: 48px 0 28px;
  margin-top: 60px;
}
.site-footer .container {
  display: grid;
  grid-template-columns: 1.3fr 1fr 1fr;
  gap: 32px;
}
.site-footer h4 { color: var(--white); font-size: 0.85rem; }
.site-footer a { text-decoration: none; color: var(--paper-dim); font-size: 0.92rem; }
.site-footer a:hover { color: var(--orange); }
.footer-bottom {
  border-top: 1px solid var(--navy-mid);
  margin-top: 32px;
  padding-top: 20px;
  font-family: var(--font-mono);
  font-size: 0.75rem;
  color: var(--steel-light);
  display: flex;
  justify-content: space-between;
  flex-wrap: wrap;
  gap: 8px;
}
@media (max-width: 700px) {
  .site-footer .container { grid-template-columns: 1fr; }
}