/* ══════════════════════════════════════════════════════════════
   ARP Shared Stylesheet — automatedroboticparking.com
   Used by all sub-pages: /systems/, /manufacturers/, /case-studies/
   ══════════════════════════════════════════════════════════════ */

@import url('https://fonts.googleapis.com/css2?family=Playfair+Display:wght@400;700&family=Source+Sans+3:wght@300;400;600&family=Source+Code+Pro:wght@400;500&display=swap');

:root {
  --ink: #1a1a1e;
  --dark: #22222a;
  --mid: #3a3a45;
  --rule: #d8d8e0;
  --soft: #f4f4f6;
  --paper: #fafaf8;
  --white: #ffffff;
  --steel: #6a6a7a;
  --accent: #1a4fd6;
  --accent-warm: #c8420a;
  --serif: 'Playfair Display', Georgia, serif;
  --sans: 'Source Sans 3', system-ui, sans-serif;
  --mono: 'Source Code Pro', monospace;
}

*, *::before, *::after { box-sizing: border-box; margin: 0; padding: 0; }
html { scroll-behavior: smooth; }
body { background: var(--paper); color: var(--ink); font-family: var(--sans); font-weight: 300; line-height: 1.65; }
a { color: var(--accent); text-decoration: none; }
a:hover { text-decoration: underline; }

/* ── TOP BAR ────────────────────────────────────────────────── */
.top-bar {
  background: var(--ink); color: rgba(255,255,255,0.55);
  font-family: var(--mono); font-size: 0.65rem; letter-spacing: 0.18em; text-transform: uppercase;
  padding: 0.5rem 2.5rem; display: flex; justify-content: space-between; align-items: center;
}
.top-bar a { color: rgba(255,255,255,0.55); transition: color 0.2s; }
.top-bar a:hover { color: white; text-decoration: none; }
.top-bar-links { display: flex; gap: 2rem; }

/* ── NAV ────────────────────────────────────────────────────── */
nav {
  position: sticky; top: 0; z-index: 100; background: var(--ink);
  display: flex; align-items: center; justify-content: space-between;
  padding: 0 2.5rem; border-bottom: 3px solid var(--accent-warm);
}
.nav-logo { font-family: var(--serif); font-size: 1.1rem; font-weight: 700; color: white; letter-spacing: 0.02em; padding: 0.75rem 0; text-decoration: none; }
.nav-logo:hover { text-decoration: none; color: white; }
.nav-links { display: flex; list-style: none; gap: 0; }
.nav-links a { display: block; padding: 1rem 0.82rem; font-family: var(--mono); font-size: 0.6rem; letter-spacing: 0.12em; text-transform: uppercase; color: rgba(255,255,255,0.65); text-decoration: none; border-bottom: 3px solid transparent; margin-bottom: -3px; transition: color 0.2s, border-color 0.2s; }
.nav-links a:hover, .nav-links a.active { color: white; border-color: var(--accent-warm); }
.nav-cta { font-family: var(--mono); font-size: 0.62rem; letter-spacing: 0.15em; text-transform: uppercase; background: var(--accent-warm); color: white; padding: 0.55rem 1.2rem; text-decoration: none; transition: opacity 0.2s; }
.nav-cta:hover { opacity: 0.85; text-decoration: none; color: white; }
.nav-hamburger { display: none; flex-direction: column; gap: 5px; cursor: pointer; padding: 0.5rem; background: none; border: none; touch-action: manipulation; -webkit-tap-highlight-color: transparent; }
.nav-hamburger span { display: block; width: 22px; height: 2px; background: white; transition: all 0.25s; }
.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); }
.nav-mobile { display: none; position: fixed; top: 56px; left: 0; right: 0; background: var(--ink); z-index: 99; border-bottom: 3px solid var(--accent-warm); padding: 1rem 0; }
.nav-mobile.open { display: block; }
.nav-mobile a { display: block; padding: 0.85rem 2rem; font-family: var(--mono); font-size: 0.72rem; letter-spacing: 0.15em; text-transform: uppercase; color: rgba(255,255,255,0.75); text-decoration: none; border-bottom: 1px solid rgba(255,255,255,0.06); }
.nav-mobile a:last-child { border-bottom: none; }
.nav-mobile a:hover { color: white; background: rgba(255,255,255,0.04); }
.nav-mobile .nav-cta-mobile { background: var(--accent-warm); color: white; margin: 1rem 2rem 0.5rem; display: block; text-align: center; padding: 0.75rem; }

/* ── LAYOUT ─────────────────────────────────────────────────── */
.container { max-width: 1200px; margin: 0 auto; padding: 0 2.5rem; }

/* ── BREADCRUMB ─────────────────────────────────────────────── */
.breadcrumb {
  background: var(--white); border-bottom: 1px solid var(--rule);
  padding: 0.75rem 0;
}
.breadcrumb-inner { font-family: var(--mono); font-size: 0.6rem; letter-spacing: 0.12em; text-transform: uppercase; color: var(--steel); display: flex; align-items: center; gap: 0.6rem; flex-wrap: wrap; }
.breadcrumb-inner a { color: var(--steel); text-decoration: none; }
.breadcrumb-inner a:hover { color: var(--accent); }
.breadcrumb-inner .sep { color: var(--rule); }
.breadcrumb-inner .current { color: var(--ink); }

/* ── PAGE HERO ──────────────────────────────────────────────── */
.page-hero { background: var(--white); border-bottom: 3px solid var(--ink); padding: 3rem 0 2.5rem; }
.page-hero-kicker { font-family: var(--mono); font-size: 0.62rem; letter-spacing: 0.25em; text-transform: uppercase; color: var(--accent-warm); font-weight: 500; display: flex; align-items: center; gap: 0.6rem; margin-bottom: 0.75rem; }
.page-hero-kicker::before { content: ''; width: 20px; height: 2px; background: var(--accent-warm); display: inline-block; }
.page-hero h1 { font-family: var(--serif); font-size: clamp(2rem, 4vw, 3.5rem); font-weight: 700; line-height: 1.15; color: var(--ink); margin-bottom: 1rem; }
.page-hero-deck { font-size: 1rem; color: var(--mid); line-height: 1.75; max-width: 720px; margin-bottom: 1.5rem; border-left: 3px solid var(--accent); padding-left: 1rem; }
.page-hero-meta { font-family: var(--mono); font-size: 0.62rem; letter-spacing: 0.12em; text-transform: uppercase; color: var(--steel); padding-top: 1rem; border-top: 1px solid var(--rule); display: flex; gap: 2rem; flex-wrap: wrap; }

/* ── PAGE BODY ──────────────────────────────────────────────── */
.page-body { padding: 4rem 0; background: var(--soft); border-bottom: 1px solid var(--rule); }
.page-body-grid { display: grid; grid-template-columns: 1.2fr 1fr; gap: 3rem; align-items: start; }
.page-section { padding: 4rem 0; }
.page-section + .page-section { border-top: 1px solid var(--rule); }

/* ── SECTION HEADS ──────────────────────────────────────────── */
.section-head { display: flex; align-items: center; gap: 1.25rem; margin-bottom: 2rem; }
.section-head h2 { font-family: var(--serif); font-size: 1.5rem; font-weight: 700; color: var(--ink); white-space: nowrap; }
.section-head::after { content: ''; flex: 1; height: 1px; background: var(--rule); }
.section-kicker { font-family: var(--mono); font-size: 0.62rem; letter-spacing: 0.25em; text-transform: uppercase; color: var(--accent-warm); font-weight: 500; display: flex; align-items: center; gap: 0.6rem; margin-bottom: 0.75rem; }
.section-kicker::before { content: ''; width: 20px; height: 2px; background: var(--accent-warm); display: inline-block; }

/* ── SYSTEM CONTENT ─────────────────────────────────────────── */
.system-tag { font-family: var(--mono); font-size: 0.62rem; letter-spacing: 0.2em; text-transform: uppercase; color: var(--accent-warm); margin-bottom: 1rem; }
.system-body h3 { font-family: var(--serif); font-size: 1.75rem; font-weight: 700; margin-bottom: 0.4rem; color: var(--ink); }
.system-body p { font-size: 0.92rem; color: var(--mid); line-height: 1.8; margin-bottom: 1rem; }
.pros-cons { display: grid; grid-template-columns: 1fr 1fr; gap: 1.5rem; margin-top: 1.25rem; }
.pros-cons h4 { font-family: var(--mono); font-size: 0.6rem; letter-spacing: 0.2em; text-transform: uppercase; margin-bottom: 0.75rem; padding-bottom: 0.4rem; border-bottom: 1px solid; }
.pros-cons h4.pro { color: #1a7a40; border-color: #1a7a40; }
.pros-cons h4.con { color: #c84220; border-color: #c84220; }
.pros-cons ul { list-style: none; display: flex; flex-direction: column; gap: 0.4rem; }
.pros-cons ul li { font-size: 0.84rem; color: var(--mid); padding-left: 1rem; position: relative; line-height: 1.5; }
.pros-cons ul li::before { content: '—'; position: absolute; left: 0; color: var(--rule); }

/* ── SPEC TABLE ─────────────────────────────────────────────── */
.system-viz { background: var(--white); border: 1px solid var(--rule); padding: 2rem; }
.viz-label { font-family: var(--mono); font-size: 0.6rem; letter-spacing: 0.2em; text-transform: uppercase; color: var(--steel); margin-bottom: 0.75rem; }
.spec-table { width: 100%; border-collapse: collapse; }
.spec-table tr { border-bottom: 1px solid var(--rule); }
.spec-table td { padding: 0.55rem 0; font-size: 0.84rem; }
.spec-table td:first-child { color: var(--steel); width: 52%; }
.spec-table td:last-child { color: var(--ink); font-weight: 600; text-align: right; }

/* ── MANUFACTURER CARDS ─────────────────────────────────────── */
.mfr-grid { display: grid; grid-template-columns: repeat(3, 1fr); gap: 1.5rem; }
.mfr-card { border: 1px solid var(--rule); padding: 1.75rem; background: var(--soft); transition: border-color 0.2s; }
.mfr-card:hover { border-color: var(--accent); }
.mfr-name { font-family: var(--serif); font-size: 1.15rem; font-weight: 700; margin-bottom: 0.2rem; color: var(--ink); }
.mfr-hq { font-family: var(--mono); font-size: 0.6rem; letter-spacing: 0.15em; text-transform: uppercase; color: var(--steel); margin-bottom: 0.75rem; }
.mfr-type { display: inline-block; font-family: var(--mono); font-size: 0.57rem; letter-spacing: 0.15em; text-transform: uppercase; padding: 0.18rem 0.55rem; color: white; margin-bottom: 0.75rem; margin-right: 0.3rem; }
.mfr-type.puzzle { background: #1a7a40; }
.mfr-type.stacker { background: var(--accent-warm); }
.mfr-type.agv { background: var(--accent); }
.mfr-type.rackrail { background: #6b3fa0; }
.mfr-type.luxury { background: #8a6a20; }
.mfr-desc { font-size: 0.84rem; color: var(--mid); line-height: 1.65; margin-bottom: 0.75rem; }
.mfr-link { font-family: var(--mono); font-size: 0.62rem; letter-spacing: 0.12em; text-transform: uppercase; color: var(--accent); }
.mfr-page-link { display: inline-block; margin-top: 0.5rem; font-family: var(--mono); font-size: 0.58rem; letter-spacing: 0.12em; text-transform: uppercase; color: var(--accent-warm); border-bottom: 1px solid var(--accent-warm); padding-bottom: 1px; }

/* ── PROJECT/CASE STUDY CARDS ───────────────────────────────── */
.projects-grid { display: grid; grid-template-columns: repeat(3,1fr); gap: 1.5rem; }
.project-card { background: rgba(255,255,255,0.04); border: 1px solid rgba(255,255,255,0.1); padding: 2rem; transition: border-color 0.2s; position: relative; overflow: hidden; }
.project-card:hover { border-color: var(--accent-warm); background: rgba(255,255,255,0.07); }
.project-card::before { content: ''; position: absolute; top: 0; left: 0; right: 0; height: 3px; background: var(--accent-warm); }
.project-year { font-family: var(--mono); font-size: 0.6rem; letter-spacing: 0.2em; text-transform: uppercase; color: var(--accent-warm); margin-bottom: 0.6rem; }
.project-name { font-family: var(--serif); font-size: 1.25rem; font-weight: 700; color: white; line-height: 1.25; margin-bottom: 0.4rem; }
.project-location { font-family: var(--mono); font-size: 0.65rem; letter-spacing: 0.12em; text-transform: uppercase; color: rgba(255,255,255,0.4); margin-bottom: 1rem; }
.project-desc { font-size: 0.86rem; color: rgba(255,255,255,0.65); line-height: 1.7; margin-bottom: 1.25rem; }
.project-tag { display: inline-block; font-family: var(--mono); font-size: 0.55rem; letter-spacing: 0.15em; text-transform: uppercase; padding: 0.2rem 0.6rem; background: rgba(255,255,255,0.08); color: rgba(255,255,255,0.55); margin-top: 1rem; }

/* ── CTA BANNER ─────────────────────────────────────────────── */
.cta-banner { background: var(--ink); color: white; padding: 3rem 2.5rem; display: grid; grid-template-columns: 1fr auto; gap: 3rem; align-items: center; margin: 0; }
.cta-banner h2 { font-family: var(--serif); font-size: 1.75rem; font-weight: 700; margin-bottom: 0.75rem; }
.cta-banner p { font-size: 0.88rem; color: rgba(255,255,255,0.65); line-height: 1.75; max-width: 560px; }
.cta-btn { display: inline-block; background: var(--accent-warm); color: white; font-family: var(--mono); font-size: 0.68rem; letter-spacing: 0.15em; text-transform: uppercase; padding: 0.9rem 1.75rem; text-decoration: none; transition: opacity 0.2s; white-space: nowrap; }
.cta-btn:hover { opacity: 0.85; text-decoration: none; color: white; }

/* ── EXPERT BOX (inline form) ───────────────────────────────── */
.expert-box { background: var(--ink); color: white; padding: 3rem 2.5rem; display: grid; grid-template-columns: 1fr 1fr; gap: 3rem; align-items: center; }
.expert-box h2 { font-family: var(--serif); font-size: 1.9rem; font-weight: 700; margin-bottom: 1rem; line-height: 1.2; }
.expert-box p { font-size: 0.88rem; color: rgba(255,255,255,0.65); line-height: 1.75; margin-bottom: 1rem; }
.expert-form { display: flex; flex-direction: column; gap: 0.75rem; }
.expert-form input, .expert-form select, .expert-form textarea { background: rgba(255,255,255,0.08); border: 1px solid rgba(255,255,255,0.15); color: white; padding: 0.75rem 1rem; font-family: var(--sans); font-size: 0.88rem; outline: none; transition: border-color 0.2s; width: 100%; }
.expert-form input::placeholder, .expert-form textarea::placeholder { color: rgba(255,255,255,0.35); }
.expert-form input:focus, .expert-form select:focus, .expert-form textarea:focus { border-color: rgba(255,255,255,0.4); }
.expert-form select option { background: var(--ink); }
.expert-form textarea { height: 80px; resize: vertical; }
.btn-submit { background: var(--accent-warm); color: white; border: none; padding: 0.85rem 1.5rem; font-family: var(--mono); font-size: 0.68rem; letter-spacing: 0.15em; text-transform: uppercase; cursor: pointer; transition: opacity 0.2s; }
.btn-submit:hover { opacity: 0.85; }

/* ── FOOTER ─────────────────────────────────────────────────── */
footer { background: var(--ink); color: rgba(255,255,255,0.5); padding: 3rem 2.5rem 2rem; }
.footer-grid { display: grid; grid-template-columns: 2fr 1fr 1fr 1fr; gap: 3rem; margin-bottom: 2.5rem; }
.footer-brand-name { font-family: var(--serif); font-size: 1.2rem; font-weight: 700; color: white; margin-bottom: 0.75rem; }
.footer-mission { font-size: 0.84rem; line-height: 1.7; max-width: 280px; }
.footer-col h4 { font-family: var(--mono); font-size: 0.6rem; letter-spacing: 0.22em; text-transform: uppercase; color: white; margin-bottom: 1rem; padding-bottom: 0.5rem; border-bottom: 1px solid rgba(255,255,255,0.12); }
.footer-col ul { list-style: none; display: flex; flex-direction: column; gap: 0.6rem; }
.footer-col ul a { font-size: 0.84rem; color: rgba(255,255,255,0.5); text-decoration: none; transition: color 0.2s; }
.footer-col ul a:hover { color: white; }
.footer-bottom { border-top: 1px solid rgba(255,255,255,0.1); padding-top: 1.5rem; display: flex; justify-content: space-between; font-family: var(--mono); font-size: 0.6rem; letter-spacing: 0.12em; color: rgba(255,255,255,0.3); flex-wrap: wrap; gap: 0.5rem; }
.disclaimer { font-size: 0.75rem; color: rgba(255,255,255,0.28); line-height: 1.6; margin-top: 1.25rem; max-width: 700px; }

/* ── DETAIL PAGE LAYOUT ─────────────────────────────────────── */
.detail-hero { background: var(--ink); color: white; padding: 3rem 0 2.5rem; }
.detail-hero h1 { font-family: var(--serif); font-size: clamp(1.75rem, 3.5vw, 2.75rem); font-weight: 700; line-height: 1.2; margin-bottom: 0.75rem; }
.detail-hero .hq { font-family: var(--mono); font-size: 0.65rem; letter-spacing: 0.15em; text-transform: uppercase; color: rgba(255,255,255,0.55); margin-bottom: 1rem; }
.detail-hero p { font-size: 0.95rem; color: rgba(255,255,255,0.75); line-height: 1.8; max-width: 720px; }
.detail-body { background: var(--white); padding: 4rem 0; }
.detail-grid { display: grid; grid-template-columns: 1.5fr 1fr; gap: 4rem; align-items: start; }

/* ── ANIMATIONS ─────────────────────────────────────────────── */
.fade-up { opacity: 1; transform: none; transition: opacity 0.5s ease, transform 0.5s ease; }
.fade-up.will-animate { opacity: 0; transform: translateY(16px); }
.fade-up.will-animate.visible { opacity: 1; transform: none; }

/* ── TAGS LIST ──────────────────────────────────────────────── */
.tag-list { display: flex; flex-wrap: wrap; gap: 0.4rem; margin-bottom: 1rem; }

/* ── RESPONSIVE ─────────────────────────────────────────────── */
@media (max-width: 900px) {
  .page-body-grid { grid-template-columns: 1fr; }
  .detail-grid { grid-template-columns: 1fr; }
  .mfr-grid { grid-template-columns: 1fr 1fr; }
  .projects-grid { grid-template-columns: 1fr; }
  .footer-grid { grid-template-columns: 1fr 1fr; }
  .expert-box { grid-template-columns: 1fr; gap: 2rem; }
  .cta-banner { grid-template-columns: 1fr; gap: 1.5rem; }
  nav { padding: 0 1.25rem; }
  .nav-links { display: none; }
  .nav-hamburger { display: flex; }
  .container { padding: 0 1.5rem; }
  .top-bar { padding: 0.5rem 1.5rem; }
  .top-bar-links { display: none; }
  .pros-cons { grid-template-columns: 1fr; }
}
@media (max-width: 600px) {
  .mfr-grid { grid-template-columns: 1fr; }
  .footer-grid { grid-template-columns: 1fr; }
  .page-hero h1 { font-size: 1.8rem; }
}