:root {
  --ink: #1B2A3D;
  --blue: #2F5D9F;
  --concrete: #EDEBE6;
  --steel: #8B9199;
  --orange: #FF6B35;
  --white: #FFFFFF;
  --green: #3C6E47;
  --red: #C4574B;
  --border: #DAD6CC;
}

* { box-sizing: border-box; }
html, body { max-width: 100%; overflow-x: hidden; }
body {
  margin: 0;
  background: var(--concrete);
  color: var(--ink);
  font-family: 'Inter', sans-serif;
  font-size: 15px;
  line-height: 1.5;
}
img { max-width: 100%; }
h1, h2, h3 { font-family: 'Space Grotesk', sans-serif; margin: 0 0 4px; }
.mono { font-family: 'IBM Plex Mono', monospace; }
a { color: inherit; text-decoration: none; }

/* header */
.site-header { background: var(--white); border-bottom: 1px solid var(--border); position: sticky; top: 0; z-index: 10; }
.site-header-inner { max-width: 1080px; margin: 0 auto; padding: 14px 20px; display: flex; align-items: center; gap: 28px; }
.brand { display: flex; align-items: center; gap: 8px; font-family: 'Space Grotesk', sans-serif; font-weight: 700; font-size: 17px; }
.brand-tagline { font-family: 'Inter', sans-serif; font-weight: 500; font-size: 12px; color: var(--steel); border-left: 1px solid var(--border); padding-left: 8px; margin-left: 2px; }
.nav { display: flex; gap: 20px; flex: 1; }
.navlink { font-size: 13px; font-weight: 500; color: var(--steel); }
.navlink.active { color: var(--ink); font-weight: 700; }
.nav-user { display: flex; align-items: center; gap: 12px; font-size: 13px; }
.notif-bell { position: relative; font-size: 16px; line-height: 1; display: inline-flex; }
.notif-badge { position: absolute; top: -6px; right: -8px; background: var(--red); color: var(--white); font-size: 9px; font-weight: 700; border-radius: 999px; min-width: 14px; height: 14px; display: flex; align-items: center; justify-content: center; padding: 0 3px; }
.btn-link { background: none; border: none; color: var(--steel); font-size: 13px; cursor: pointer; font-family: inherit; padding: 0; }
.btn-cta-sm { background: var(--orange); color: var(--white); padding: 8px 14px; border-radius: 8px; font-size: 13px; font-weight: 600; }

.flash { max-width: 1080px; margin: 12px auto 0; padding: 10px 16px; background: #FFF4EE; border: 1px solid var(--orange); border-radius: 8px; font-size: 13px; }

.site-main { max-width: 1080px; margin: 0 auto; padding: 24px 20px 60px; }
.site-footer { text-align: center; font-size: 11px; color: var(--steel); padding: 30px 20px; }
.footer-links { display: flex; justify-content: center; gap: 16px; margin-bottom: 10px; font-size: 12px; }
.footer-links a { color: var(--ink); font-weight: 600; }
.footer-links a:hover { color: var(--orange); }
.footer-staff-link { color: var(--steel) !important; font-weight: 400 !important; opacity: 0.6; }
.footer-staff-link:hover { opacity: 1; }

/* admin sub-nav strip */
.admin-subnav { display: flex; gap: 14px; flex-wrap: wrap; margin-bottom: 18px; padding-bottom: 12px; border-bottom: 1px solid var(--border); font-size: 13px; }
.admin-subnav a { color: var(--steel); font-weight: 600; }
.admin-subnav a.active { color: var(--orange); }

/* nav dropdown */
.nav-dropdown { position: relative; }
.nav-dropdown summary { cursor: pointer; list-style: none; }
.nav-dropdown summary::-webkit-details-marker { display: none; }
.nav-dropdown-menu { position: absolute; top: 100%; left: 0; margin-top: 8px; background: var(--white); border: 1px solid var(--border); border-radius: 8px; padding: 6px; min-width: 200px; box-shadow: 0 8px 20px rgba(27,42,61,0.12); z-index: 20; display: flex; flex-direction: column; }
.nav-dropdown-menu a { padding: 8px 10px; border-radius: 6px; font-size: 13px; font-weight: 500; color: var(--ink); }
.nav-dropdown-menu a:hover { background: var(--concrete); }
.nav-dropdown-menu a.active { color: var(--orange); font-weight: 700; }

/* cards / grid */
.grid { display: grid; grid-template-columns: repeat(auto-fill, minmax(260px, 1fr)); gap: 18px; }
.card { background: var(--white); border: 1px solid var(--border); border-radius: 10px; overflow: hidden; transition: box-shadow .15s, transform .15s; }
.card:hover { box-shadow: 0 8px 20px rgba(27,42,61,0.08); transform: translateY(-2px); }
.card-diagram { height: 140px; background: var(--concrete); display: flex; align-items: center; justify-content: center; }
.card-body { padding: 16px; }
.badge { display: inline-flex; align-items: center; gap: 4px; font-size: 11px; font-weight: 600; padding: 2px 8px; border-radius: 999px; }
.badge-blue { background: #EAF0F8; color: var(--blue); }
.badge-orange { background: #FFF4EE; color: var(--orange); }
.badge-green { background: #EAF3EC; color: var(--green); }
.badge-steel { background: var(--concrete); color: var(--steel); }

/* forms */
.field { margin-bottom: 14px; }
.field label { display: block; font-size: 11px; font-weight: 600; letter-spacing: .02em; color: var(--steel); margin-bottom: 6px; text-transform: uppercase; }
.field input, .field select, .field textarea {
  width: 100%; min-width: 0; padding: 11px 13px; border-radius: 8px; border: 1px solid var(--border);
  background: var(--concrete); color: var(--ink); font-size: 14px; font-family: inherit;
}
.field .hint { font-size: 11px; color: var(--steel); margin-top: 4px; }
.form-card { background: var(--white); border: 1px solid var(--border); border-radius: 12px; padding: 24px; max-width: 460px; }
.form-card-wide { max-width: 760px; }
.form-row { display: flex; gap: 12px; }
.form-row .field { flex: 1; min-width: 0; }

.btn { display: inline-flex; align-items: center; justify-content: center; gap: 6px; padding: 11px 18px; border-radius: 8px; font-size: 14px; font-weight: 600; border: none; cursor: pointer; font-family: inherit; }
.btn-primary { background: var(--orange); color: var(--white); }
.btn-outline { background: var(--white); color: var(--ink); border: 1px solid var(--ink); }
.btn-dark { background: var(--ink); color: var(--white); }
.btn-block { width: 100%; }
.btn[disabled] { opacity: .45; cursor: not-allowed; }
.btn-sm { padding: 6px 12px; font-size: 12px; }

/* misc */
.panel { background: var(--white); border: 1px solid var(--border); border-radius: 10px; padding: 20px; }
.panel-tint { background: var(--concrete); border-radius: 8px; padding: 16px; }
.row-between { display: flex; align-items: center; justify-content: space-between; }
.stack > * + * { margin-top: 12px; }
.divider { height: 1px; background: var(--border); margin: 14px 0; }
.muted { color: var(--steel); }
.small { font-size: 12px; }
.two-col { display: grid; grid-template-columns: minmax(0, 1fr) minmax(0, 1fr); gap: 20px; }
.stat-grid-3 { display: grid; grid-template-columns: repeat(3, minmax(0, 1fr)); gap: 10px; text-align: center; }
.steps { display: flex; gap: 10px; flex-wrap: wrap; }
.step { display: flex; align-items: center; gap: 6px; font-size: 12px; }
.step-dot { width: 10px; height: 10px; border-radius: 50%; background: var(--border); }
.step-dot.done { background: var(--green); }
.step-dot.active { background: var(--orange); }
.tag-strip { background: var(--ink); color: #C9D2DE; font-size: 12px; padding: 8px 20px; }
.tag-strip-inner { max-width: 1080px; margin: 0 auto; display: flex; gap: 8px; align-items: center; }
.signature { font-family: 'Caveat', cursive; font-size: 30px; border-bottom: 2px solid var(--ink); padding: 10px 0; min-height: 44px; }

.job-list { display: flex; flex-direction: column; gap: 10px; }
.job-row { display: block; padding: 14px; border: 1px solid var(--border); border-radius: 10px; background: var(--white); }
.job-row:hover { border-color: var(--ink); }

/* chat */
.chat-thread { display: flex; flex-direction: column; gap: 8px; max-height: 260px; overflow-y: auto; padding: 4px; }
.chat-bubble { align-self: flex-start; max-width: 80%; background: var(--concrete); border-radius: 10px; padding: 8px 12px; }
.chat-bubble.mine { align-self: flex-end; background: #FFF4EE; }
.chat-form { display: flex; gap: 8px; }
.chat-form input { flex: 1; padding: 9px 12px; border-radius: 8px; border: 1px solid var(--border); background: var(--concrete); font-size: 13px; font-family: inherit; }

/* AR wall visualizer */
.ar-overlay { position: fixed; inset: 0; background: #000; z-index: 100; display: flex; align-items: center; justify-content: center; overflow: hidden; }
.ar-video { position: absolute; inset: 0; width: 100%; height: 100%; object-fit: cover; }
.ar-rect { position: relative; border: 3px dashed var(--orange); background: rgba(255,107,53,0.12); box-shadow: 0 0 0 2000px rgba(0,0,0,0.35); }
.ar-tilt-badge { position: absolute; top: 20px; left: 50%; transform: translateX(-50%); background: rgba(0,0,0,0.6); color: var(--white); font-family: 'IBM Plex Mono', monospace; font-size: 12px; padding: 6px 12px; border-radius: 999px; }
.ar-controls { position: absolute; bottom: 24px; left: 50%; transform: translateX(-50%); display: flex; gap: 12px; align-items: center; background: rgba(0,0,0,0.5); padding: 10px 14px; border-radius: 999px; }
.ar-controls input[type="range"] { width: 140px; }

/* mobile */
@media (max-width: 680px) {
  .brand-tagline { display: none; }
  .site-header-inner { flex-wrap: wrap; row-gap: 8px; padding: 12px 16px; }
  .nav { order: 3; width: 100%; flex-wrap: wrap; gap: 8px 16px; }
  .nav-user { flex-wrap: wrap; }
  .two-col, .stat-grid-3 { grid-template-columns: 1fr; }
  .site-main { padding: 16px 14px 40px; }
  .form-card { max-width: 100%; }
  .card-diagram { height: 160px; }
  .ar-controls { flex-wrap: wrap; justify-content: center; }
}