/* ============================================================
   PROSOTECH — static site stylesheet
   No frameworks, no external requests. Pure CSS.
   ============================================================ */

:root{
  --ink:        #0e1b2c;   /* deep ink navy            */
  --ink-soft:   #22344a;   /* secondary text on light  */
  --paper:      #faf9f6;   /* warm ivory background    */
  --paper-dim:  #f1efe9;   /* section banding          */
  --line:       #e3e0d8;   /* hairline rules           */
  --accent:     #2e8fa3;   /* steel teal               */
  --accent-dk:  #1f6f80;
  --gold:       #c2a267;   /* quiet detail color       */
  --white:      #ffffff;
  --text:       #2b3846;
  --muted:      #5c6b7a;
  --radius:     14px;
  --shadow-sm:  0 1px 2px rgba(14,27,44,.06), 0 4px 14px rgba(14,27,44,.06);
  --shadow-md:  0 2px 4px rgba(14,27,44,.08), 0 18px 44px rgba(14,27,44,.14);
  --font-body:  -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto,
                "Helvetica Neue", Arial, sans-serif;
  --font-disp:  "Avenir Next", "Segoe UI Variable Display", "Segoe UI",
                Futura, "Helvetica Neue", Arial, sans-serif;
  --wrap:       1120px;
}

*,*::before,*::after{ box-sizing:border-box; }
html{ scroll-behavior:smooth; -webkit-text-size-adjust:100%; background:var(--ink); }
body{
  margin:0; background:var(--paper); color:var(--text);
  font-family:var(--font-body); font-size:17px; line-height:1.65;
  text-rendering:optimizeLegibility;
}
img{ max-width:100%; height:auto; display:block; }
a{ color:var(--accent-dk); text-decoration:none; }
a:hover{ color:var(--accent); }
.wrap{ max-width:var(--wrap); margin:0 auto; padding:0 24px; }

h1,h2,h3{ font-family:var(--font-disp); color:var(--ink); line-height:1.15;
  margin:0 0 .55em; letter-spacing:-.015em; font-weight:650; }
h1{ font-size:clamp(2.1rem, 4.6vw, 3.3rem); }
h2{ font-size:clamp(1.55rem, 3vw, 2.15rem); }
h3{ font-size:1.16rem; }
p{ margin:0 0 1em; }

.eyebrow{
  display:inline-block; font-size:.74rem; font-weight:700;
  letter-spacing:.22em; text-transform:uppercase; color:var(--accent-dk);
  margin:0 0 .9rem;
}
.eyebrow.gold{ color:var(--gold); }
.lead{ font-size:1.13rem; color:var(--ink-soft); max-width:56ch; }

/* ---------------- buttons ---------------- */
.btn{
  display:inline-block; padding:.85em 1.7em; border-radius:999px;
  font-weight:650; font-size:.95rem; letter-spacing:.02em;
  border:1.5px solid transparent; transition:.18s ease;
}
.btn-solid{ background:var(--ink); color:#fff; }
.btn-solid:hover{ background:var(--accent-dk); color:#fff; }
.btn-ghost{ border-color:rgba(255,255,255,.55); color:#fff; }
.btn-ghost:hover{ background:rgba(255,255,255,.12); border-color:#fff; color:#fff; }
.btn-line{ border-color:var(--ink); color:var(--ink); }
.btn-line:hover{ background:var(--ink); color:#fff; }

/* ---------------- header ---------------- */
.site-head{
  position:sticky; top:0; z-index:50;
  background:rgba(250,249,246,.92); backdrop-filter:blur(8px);
  border-bottom:1px solid var(--line);
}
.head-row{ display:flex; align-items:center; justify-content:space-between;
  min-height:72px; gap:24px; }
.brand{ display:flex; align-items:center; gap:11px; color:var(--ink);
  font-family:var(--font-disp); font-weight:700; font-size:1.22rem;
  letter-spacing:.01em; }
.brand svg{ width:34px; height:34px; color:var(--accent-dk); }
.brand .thin{ font-weight:450; color:var(--muted); }

.nav-toggle{ display:none; }
.menu-btn{ display:none; }
.site-nav ul{ display:flex; gap:6px; list-style:none; margin:0; padding:0; }
.site-nav a{
  display:block; padding:.55em 1.05em; border-radius:999px;
  color:var(--ink-soft); font-weight:600; font-size:.94rem;
}
.site-nav a:hover{ background:var(--paper-dim); color:var(--ink); }
.site-nav a[aria-current="page"]{ background:var(--ink); color:#fff; }
.head-cta{ white-space:nowrap; }

/* ---------------- hero (home) ---------------- */
.hero{ background:var(--ink); color:#fff; position:relative; overflow:hidden; }
.hero::after{
  content:""; position:absolute; inset:0;
  background:radial-gradient(900px 480px at 82% -10%, rgba(46,143,163,.28), transparent 65%),
             radial-gradient(700px 420px at -10% 110%, rgba(194,162,103,.14), transparent 60%);
  pointer-events:none;
}
.hero-grid{
  position:relative; z-index:1;
  display:grid; grid-template-columns:1.05fr .95fr; gap:56px;
  align-items:center; padding:92px 0 100px;
}
.hero h1{ color:#fff; }
.hero .lead{ color:rgba(255,255,255,.82); margin-bottom:1.9rem; }
.hero .btn-solid{ background:#fff; color:var(--ink); }
.hero .btn-solid:hover{ background:var(--gold); color:var(--ink); }
.hero-actions{ display:flex; gap:14px; flex-wrap:wrap; }
.hero-figure{ margin:0; }
.hero-figure .frame{
  background:#fff; padding:14px; border-radius:var(--radius);
  box-shadow:var(--shadow-md); transform:rotate(1.6deg);
}
.hero-figure img{ border-radius:9px; }
.hero-figure figcaption{
  margin-top:14px; text-align:center; font-size:.82rem;
  letter-spacing:.14em; text-transform:uppercase; color:rgba(255,255,255,.75);
}

/* ---------------- sections ---------------- */
.section{ padding:84px 0; }
.section.band{ background:var(--paper-dim); border-block:1px solid var(--line); }
.section.dark{ background:var(--ink); color:#fff; }
.section.dark h2, .section.dark h3{ color:#fff; }
.section.dark .lead{ color:rgba(255,255,255,.8); }
.section-head{ max-width:62ch; margin-bottom:44px; }

.cols{ display:grid; gap:28px; }
.cols.c3{ grid-template-columns:repeat(3,1fr); }
.cols.c2{ grid-template-columns:1fr 1fr; align-items:center; gap:56px; }

.card{
  background:#fff; border:1px solid var(--line); border-radius:var(--radius);
  padding:30px 28px; box-shadow:var(--shadow-sm);
}
.card .num{
  display:inline-flex; align-items:center; justify-content:center;
  width:42px; height:42px; border-radius:12px; margin-bottom:16px;
  background:rgba(46,143,163,.12); color:var(--accent-dk);
  font-weight:700; font-size:.95rem;
}
.card h3{ margin-bottom:.4em; }
.card p{ margin:0; color:var(--muted); font-size:.98rem; }

.stat-row{ display:flex; gap:40px; flex-wrap:wrap; margin-top:34px; }
.stat b{ display:block; font-family:var(--font-disp); font-size:1.9rem;
  color:var(--ink); line-height:1.1; }
.section.dark .stat b{ color:#fff; }
.stat span{ font-size:.85rem; color:var(--muted); letter-spacing:.06em;
  text-transform:uppercase; }
.section.dark .stat span{ color:rgba(255,255,255,.6); }

/* gallery */
.gallery{ display:grid; grid-template-columns:repeat(3,1fr); gap:22px; }
.gallery figure{ margin:0; }
.gallery .ph{ background:#fff; padding:10px; border-radius:var(--radius);
  border:1px solid var(--line); box-shadow:var(--shadow-sm); }
.gallery img{ border-radius:8px; width:100%; aspect-ratio:4/3; object-fit:cover; }
.gallery figcaption{ padding:12px 6px 2px; font-size:.88rem; color:var(--muted); }

/* contact band */
.contact-strip{ display:grid; grid-template-columns:1.2fr 1fr; gap:48px; align-items:center; }
.contact-list{ list-style:none; margin:0; padding:0; display:grid; gap:18px; }
.contact-list li{ display:flex; gap:16px; align-items:center; }
.contact-list .ic{
  flex:0 0 44px; height:44px; border-radius:12px; display:flex;
  align-items:center; justify-content:center;
  background:rgba(46,143,163,.12); color:var(--accent-dk); font-size:1.2rem;
}
.contact-list .ic svg{ width:20px; height:20px; }
.contact-list b{ display:block; color:var(--ink); font-size:.8rem;
  letter-spacing:.14em; text-transform:uppercase; margin-bottom:2px; }
.section.dark .contact-list b{ color:rgba(255,255,255,.62); }
.section.dark .contact-list .ic{ background:rgba(255,255,255,.1); color:#8fd4e2; }
.section.dark .contact-list a.big{ color:#fff; }
.section.dark .contact-list a.big:hover{ color:var(--accent); }
.section.dark .contact-list a:not(.big){ color:#8fd4e2; }
.section.dark .contact-list a:not(.big):hover{ color:#fff; }
.contact-list a.big{ font-family:var(--font-disp); font-size:1.35rem; font-weight:650; color:var(--ink); }
.contact-list a.big:hover{ color:var(--accent-dk); }

/* ---------------- forms ---------------- */
.form-card{ background:#fff; border:1px solid var(--line); border-radius:var(--radius);
  padding:34px 32px; box-shadow:var(--shadow-sm); }
.field{ margin-bottom:18px; }
.field label{ display:block; font-weight:650; font-size:.86rem; color:var(--ink);
  margin-bottom:6px; letter-spacing:.02em; }
.field input, .field textarea{
  width:100%; padding:.72em .9em; border:1px solid #cfd6dd; border-radius:9px;
  font:inherit; color:var(--text); background:#fff;
}
.field input:focus, .field textarea:focus{
  outline:none; border-color:var(--accent); box-shadow:0 0 0 3px rgba(46,143,163,.18);
}
.field-row{ display:grid; grid-template-columns:1fr 1fr; gap:16px; }
.form-note{ font-size:.84rem; color:var(--muted); margin:12px 0 0; }

/* ---------------- footer ---------------- */
.site-foot{ background:var(--ink); color:rgba(255,255,255,.72); padding:56px 0 40px; margin-top:0; }
.foot-grid{ display:flex; justify-content:space-between; gap:40px; flex-wrap:wrap; }
.foot-brand{ display:flex; align-items:center; gap:10px; color:#fff;
  font-family:var(--font-disp); font-weight:700; font-size:1.15rem; }
.foot-brand svg{ width:30px; height:30px; color:var(--accent); }
.foot-links{ display:flex; gap:22px; list-style:none; margin:0; padding:0; flex-wrap:wrap; }
.foot-links a{ color:rgba(255,255,255,.72); font-size:.93rem; }
.foot-links a:hover{ color:#fff; }
.foot-fine{ margin-top:36px; padding-top:22px; border-top:1px solid rgba(255,255,255,.14);
  font-size:.82rem; color:rgba(255,255,255,.5); display:flex; justify-content:space-between; gap:16px; flex-wrap:wrap; }

/* ---------------- page hero (interior) ---------------- */
.page-hero{ background:var(--ink); color:#fff; padding:64px 0; }
.page-hero h1{ color:#fff; margin-bottom:.2em; }
.page-hero p{ color:rgba(255,255,255,.75); margin:0; max-width:60ch; }

/* ---------------- services ---------------- */
.svc-grid{ display:grid; grid-template-columns:repeat(3,1fr); gap:24px; }
.svc-grid .card h3{ font-size:1.06rem; }
.dl-list{ list-style:none; margin:0; padding:0; display:grid; gap:14px; }
.dl-list li{ display:flex; align-items:center; gap:14px; background:#fff;
  border:1px solid var(--line); border-radius:12px; padding:16px 20px; }
.dl-list .tag{ font-size:.72rem; font-weight:700; letter-spacing:.1em; text-transform:uppercase;
  background:rgba(194,162,103,.16); color:#8a6f3c; padding:.3em .7em; border-radius:999px; }

/* ---------------- misc ---------------- */
.divider-arch{ display:flex; justify-content:center; gap:9px; padding:8px 0 0; }
.divider-arch i{ width:7px; height:7px; border-radius:50%; background:var(--gold); display:block; }

.skip-link{ position:absolute; left:-9999px; top:0; background:var(--ink); color:#fff; padding:.6em 1em; z-index:99; }
.skip-link:focus{ left:12px; top:12px; }

/* ---------------- responsive ---------------- */
@media (max-width: 940px){
  .hero-grid{ grid-template-columns:1fr; gap:44px; padding:64px 0 72px; }
  .cols.c3, .svc-grid{ grid-template-columns:1fr 1fr; }
  .gallery{ grid-template-columns:1fr 1fr; }
  .contact-strip{ grid-template-columns:1fr; gap:36px; }
}
@media (max-width: 640px){
  body{ font-size:16px; }
  .cols.c3, .svc-grid, .gallery, .field-row{ grid-template-columns:1fr; }
  .cols.c2{ gap:36px; }
  .section{ padding:60px 0; }
  /* mobile nav */
  .menu-btn{
    display:inline-flex; align-items:center; justify-content:center;
    width:44px; height:44px; border-radius:10px; border:1px solid var(--line);
    background:#fff; cursor:pointer; font-size:1.15rem; color:var(--ink);
  }
  .site-nav{ display:none; }
  .nav-toggle:checked ~ .site-nav{ display:block; position:absolute; top:72px; left:0; right:0;
    background:#fff; border-bottom:1px solid var(--line); box-shadow:var(--shadow-md); }
  .nav-toggle:checked ~ .site-nav ul{ flex-direction:column; padding:14px 24px 20px; gap:4px; }
  .head-cta{ display:none; }
}