/* ============================================================
   ART Mechatronics — base + shared components
   Every page loads: tokens.css then base.css then its own page css.
   Agents/pages MUST reuse these classes and must NOT redefine them.
   ============================================================ */

*,*::before,*::after { box-sizing: border-box; }
html { scroll-behavior: smooth; -webkit-text-size-adjust: 100%; }
body {
  margin: 0; font-family: var(--font); color: var(--ink);
  background: var(--white); line-height: 1.6; font-size: var(--fs-body);
  -webkit-font-smoothing: antialiased;
}
img, svg { max-width: 100%; display: block; }
[hidden] { display: none !important; }
a { color: var(--blue); text-decoration: none; }
h1,h2,h3,h4 { font-family: var(--font-display); line-height: 1.08; color: var(--ink); margin: 0 0 .5em; font-weight: 800; letter-spacing: -.025em; }
h2 { font-size: var(--fs-h2); }
h3 { font-size: var(--fs-h3); }
p { margin: 0 0 1em; }

/* ---- layout helpers ---- */
.wrap { width: min(100% - 2.4rem, var(--wrap)); margin-inline: auto; }
.section { padding: var(--s-8) 0; }
.section--tint { background: var(--mist); }
.section--navy { background: linear-gradient(160deg,var(--navy),var(--navy-2)); color: #dfe8f5; }
.section--navy h2, .section--navy h3 { color: #fff; }
.eyebrow {
  display: inline-block; font-size: .78rem; font-weight: 700; letter-spacing: .16em;
  text-transform: uppercase; color: var(--blue); margin-bottom: var(--s-3);
}
.section--navy .eyebrow { color: #7fb2f2; }
.lead { font-size: var(--fs-lead); color: var(--slate); max-width: 62ch; }
.section--navy .lead { color: #c2d3ea; }
.center { text-align: center; }
.center .lead { margin-inline: auto; }

/* ---- buttons ---- */
.btn {
  display: inline-flex; align-items: center; gap: .55rem; cursor: pointer;
  font: inherit; font-weight: 700; font-size: .98rem; line-height: 1;
  padding: .85rem 1.5rem; border-radius: var(--r); border: 1.5px solid transparent;
  transition: transform .18s var(--ease), box-shadow .18s var(--ease), background .18s, color .18s;
  text-align: center; white-space: nowrap;
}
.btn svg { width: 1.05em; height: 1.05em; }
.btn--primary { background: var(--blue); color: #fff; box-shadow: 0 8px 22px rgba(22,87,176,.32); }
.btn--primary:hover { background: var(--blue-bright); transform: translateY(-2px); box-shadow: 0 12px 28px rgba(46,134,230,.4); }
.btn--wa { background: #25D366; color: #073b1e; box-shadow: 0 8px 22px rgba(37,211,102,.32); }
.btn--wa:hover { background: #1fbe5a; transform: translateY(-2px); }
.btn--ghost { background: transparent; color: var(--blue); border-color: var(--line); }
.btn--ghost:hover { border-color: var(--blue); background: var(--blue-soft); }
.btn--light { background: #fff; color: var(--navy); }
.btn--light:hover { transform: translateY(-2px); box-shadow: var(--shadow); }
.btn--outline-light { background: transparent; color: #fff; border-color: rgba(255,255,255,.4); }
.btn--outline-light:hover { background: rgba(255,255,255,.12); border-color: #fff; }
.btn--lg { padding: 1.05rem 2rem; font-size: 1.05rem; }
.btn:active { transform: scale(.97); }

/* ---- cards ---- */
.card {
  background: #fff; border: 1px solid var(--line); border-radius: var(--r-lg);
  box-shadow: var(--shadow-sm); overflow: clip;
  transition: transform .22s var(--ease), box-shadow .22s var(--ease), border-color .22s;
}
.card:hover { transform: translateY(-4px); box-shadow: var(--shadow); border-color: #c9d6ea; }

/* pill / chip */
.chip {
  display: inline-flex; align-items: center; gap: .4rem; font-size: .78rem; font-weight: 700;
  letter-spacing: .04em; padding: .32rem .7rem; border-radius: 999px;
  background: var(--blue-soft); color: var(--blue); border: 1px solid #d4e4fb;
}

/* feature check list */
.checks { list-style: none; margin: 0; padding: 0; display: grid; gap: .7rem; }
.checks li { position: relative; padding-left: 1.9rem; color: var(--slate); }
.checks li::before {
  content: ""; position: absolute; left: 0; top: .15em; width: 1.25rem; height: 1.25rem;
  border-radius: 50%; background: var(--blue-soft) url("data:image/svg+xml,%3Csvg xmlns='http://www.w3.org/2000/svg' width='14' height='14' viewBox='0 0 24 24' fill='none' stroke='%231657B0' stroke-width='3.5' stroke-linecap='round' stroke-linejoin='round'%3E%3Cpolyline points='20 6 9 17 4 12'/%3E%3C/svg%3E") center/14px no-repeat;
}

/* ============ HEADER ============ */
.site-header {
  position: sticky; top: 0; z-index: 100; background: rgba(255,255,255,.9);
  backdrop-filter: saturate(160%) blur(10px); border-bottom: 1px solid var(--line);
}
.site-header__inner { display: flex; align-items: center; justify-content: space-between; gap: 1rem; height: 78px; }
.brand { display: flex; align-items: center; }
.brand img { height: 42px; width: auto; }
.nav { display: flex; align-items: center; gap: .4rem; }
.nav a {
  color: var(--slate); font-weight: 600; font-size: .95rem; padding: .5rem .8rem; border-radius: 8px;
  transition: color .15s, background .15s;
}
.nav a:hover, .nav a[aria-current="page"] { color: var(--blue); background: var(--blue-soft); }
.nav .btn { margin-left: .4rem; padding: .6rem 1.1rem; }
.nav a.btn--primary { color:#fff; background:var(--blue); }
.nav a.btn--primary:hover { color:#fff; background:var(--blue-bright); }
.nav-toggle { display: none; min-width:44px; min-height:44px; align-items:center; justify-content:center; background: none; border: 0; cursor: pointer; padding: .4rem; color: var(--navy); }
.nav-toggle svg { width: 28px; height: 28px; }

@media (max-width: 900px) {
  .nav-toggle { display: inline-flex; }
  .nav {
    position: fixed; inset: 78px 0 auto 0; flex-direction: column; align-items: stretch; gap: .2rem;
    background: #fff; padding: 1rem 1.2rem 1.4rem; border-bottom: 1px solid var(--line);
    box-shadow: var(--shadow); transform: translateY(-140%); visibility:hidden; pointer-events:none;
    transition: transform .3s var(--ease), visibility 0s linear .3s;
    max-height: calc(100vh - 78px); overflow-y: auto;
  }
  .nav[data-open="true"] { transform: translateY(0); visibility:visible; pointer-events:auto; transition-delay:0s; }
  .nav a { padding: .8rem .6rem; font-size: 1.05rem; border-bottom: 1px solid var(--mist); border-radius: 0; }
  .nav .btn { margin: .6rem 0 0; justify-content: center; }
}

.skip-link {
  position:fixed; z-index:200; top:.75rem; left:.75rem; padding:.7rem 1rem;
  border-radius:var(--r-sm); background:#fff; color:var(--navy); font-weight:800;
  box-shadow:var(--shadow); transform:translateY(-160%); transition:transform .18s var(--ease);
}
.skip-link:focus { transform:translateY(0); }

/* ============ FOOTER ============ */
.site-footer { background: linear-gradient(160deg,var(--navy),var(--navy-2)); color: #b9c8de; padding: var(--s-8) 0 var(--s-5); }
.site-footer a { color: #cfe0f7; }
.site-footer a:hover { color: #fff; }
.footer-grid { display: grid; grid-template-columns: 1.4fr 1fr 1fr 1.2fr; gap: 2.4rem; }
.footer-grid img { height: 46px; margin-bottom: 1rem; }
.footer-col h2 { color: #fff; font-size: .8rem; letter-spacing: .14em; text-transform: uppercase; margin-bottom: 1rem; }
.footer-col ul { list-style: none; margin: 0; padding: 0; display: grid; gap: .6rem; font-size: .95rem; }
.footer-flags { display: flex; gap: .5rem; margin-top: .8rem; font-size: .9rem; color: #9fb4d4; }
.footer-bottom {
  margin-top: var(--s-7); padding-top: var(--s-4); border-top: 1px solid rgba(255,255,255,.12);
  display: flex; flex-wrap: wrap; gap: .6rem 1.4rem; justify-content: space-between;
  font-size: .82rem; color: #8ea5c6;
}
@media (max-width: 820px){ .footer-grid { grid-template-columns: 1fr 1fr; gap: 1.8rem; } }
@media (max-width: 480px){ .footer-grid { grid-template-columns: 1fr; } }

/* ============ reveal-on-scroll ============ */
.reveal { opacity: 0; transform: translateY(22px); transition: opacity .7s var(--ease), transform .7s var(--ease); }
.reveal.in { opacity: 1; transform: none; }
@media (prefers-reduced-motion: reduce) {
  * { animation-duration: .001ms !important; animation-iteration-count: 1 !important; transition-duration: .001ms !important; }
  html { scroll-behavior: auto; }
  .reveal { opacity: 1; transform: none; }
}

/* ============ rotating trust stamps ============ */
.trust-band { text-align: center; }
.trust-stamps {
  display: flex; flex-wrap: wrap; gap: 2.4rem; justify-content: center; align-items: center; margin-top: var(--s-6);
}
.trust-stamp { position: relative; width: 148px; height: 148px; flex: 0 0 auto; }
.trust-stamp__ring { width: 100%; height: 100%; animation: stamp-spin 22s linear infinite; transform-origin: 50% 50%; }
.trust-stamp__ring text { fill: var(--blue); font-size: 8.7px; font-weight: 800; letter-spacing: 2.1px; text-transform: uppercase; }
.trust-stamp__emblem {
  position: absolute; inset: 0; display: grid; place-items: center; pointer-events: none;
}
.trust-stamp__emblem .disc {
  width: 78px; height: 78px; border-radius: 50%; display: grid; place-items: center;
  background: linear-gradient(150deg, var(--blue), var(--navy)); color: #fff; box-shadow: var(--shadow);
  text-align: center; line-height: 1.05;
}
.trust-stamp__emblem .disc svg { width: 34px; height: 34px; }
.trust-stamp__emblem .disc b { font-size: .92rem; font-weight: 900; letter-spacing: .02em; }
.trust-stamp__emblem .disc small { font-size: .5rem; letter-spacing: .14em; text-transform: uppercase; opacity: .85; }
.section--navy .trust-stamp__ring text { fill: #8fc0ff; }
@keyframes stamp-spin { to { transform: rotate(360deg); } }
@media (prefers-reduced-motion: reduce) { .trust-stamp__ring { animation: none; } }
@media (max-width: 560px){ .trust-stamp { width: 120px; height: 120px; } }

/* utility */
.grid { display: grid; gap: 1.5rem; }
.mt-0{margin-top:0}.mb-0{margin-bottom:0}
.stack > * + * { margin-top: 1rem; }
.visually-hidden { position:absolute; width:1px; height:1px; padding:0; margin:-1px; overflow:hidden; clip:rect(0 0 0 0); white-space:nowrap; border:0; }
:focus-visible { outline: 3px solid var(--blue-bright); outline-offset: 2px; border-radius: 4px; }