/* ============================================================
   [YOUR NAME] — Engineering practice (dba AMT)
   Shared stylesheet — modern engineer-portfolio style
   ============================================================ */
:root{
  --navy:#0d2137; --navy2:#12324f; --blue:#2f7fb5; --blue-br:#4aa8e0;
  --accent:#e8871e; --accent-dk:#cf7815;
  --ink:#1c2b36; --muted:#5a6b78; --line:#dfe5ea;
  --bg:#f4f6f8; --card:#ffffff;
  --dark-ink:#e8eef3; --dark-muted:#9fb3c4;
}
*{box-sizing:border-box;margin:0;padding:0}
html{scroll-behavior:smooth}
body{font-family:'Inter',-apple-system,BlinkMacSystemFont,'Segoe UI',Roboto,Arial,sans-serif;background:var(--bg);color:var(--ink);line-height:1.6}
a{text-decoration:none;color:inherit}
img{max-width:100%;display:block}
.wrap{max-width:1140px;margin:0 auto;padding:0 24px}
.mono{font-family:'JetBrains Mono',monospace}

/* ---------- HEADER / NAV ---------- */
header{position:sticky;top:0;z-index:40;background:rgba(255,255,255,.97);backdrop-filter:blur(8px);border:3px solid var(--navy);box-shadow:0 1px 6px rgba(13,33,55,.06)}
.hdr{display:flex;align-items:center;gap:16px;padding:11px 24px;max-width:1140px;margin:0 auto}
.brand{display:flex;align-items:center;gap:12px}
.brand .nm{font-size:25px;font-weight:800;color:var(--navy);letter-spacing:.3px}
.brand .amt{display:flex;align-items:center;gap:7px;padding-left:12px;margin-left:2px;border-left:1px solid var(--line)}
.brand .amt img{height:36px;width:auto;background:#fff;border-radius:3px;padding:2px 4px}
.brand .amt span{font-size:12.5px;color:var(--muted);text-transform:uppercase;letter-spacing:.5px;line-height:1.25}
nav{margin-left:auto;display:flex;gap:22px;align-items:center}
nav a{font-size:13.5px;font-weight:500;color:var(--muted);transition:.15s;white-space:nowrap}
nav a:hover{color:var(--navy)}
nav a.active{color:var(--navy);font-weight:700}
nav a.cta{background:var(--accent);color:#fff;padding:8px 16px;border-radius:6px;font-weight:700}
nav a.cta:hover{background:var(--accent-dk);color:#fff}

/* ---------- PAGE HERO (subpages) ---------- */
.page-hero{position:relative;background:radial-gradient(1000px 400px at 75% -20%,rgba(47,127,181,.3) 0,transparent 60%),linear-gradient(160deg,var(--navy),var(--navy2));color:#fff;overflow:hidden}
.page-hero:before{content:"";position:absolute;inset:0;background-image:linear-gradient(rgba(74,168,224,.06) 1px,transparent 1px),linear-gradient(90deg,rgba(74,168,224,.06) 1px,transparent 1px);background-size:38px 38px;opacity:.6}
.page-hero .inner{position:relative;padding:54px 24px 58px;max-width:1140px;margin:0 auto}
.page-hero .eyebrow{color:var(--accent);font-weight:700;font-size:12px;letter-spacing:1.5px;text-transform:uppercase}
.page-hero h1{font-size:38px;font-weight:800;letter-spacing:-.4px;margin-top:8px}
.page-hero p{font-size:16px;color:var(--dark-muted);margin-top:12px;max-width:640px}

/* ---------- SECTIONS ---------- */
section{padding:66px 0}
.sec-eyebrow{color:var(--accent);font-weight:700;font-size:12px;letter-spacing:1.5px;text-transform:uppercase}
.sec-title{font-size:29px;font-weight:800;color:var(--navy);margin-top:8px;letter-spacing:-.3px}
.sec-sub{color:var(--muted);margin-top:10px;max-width:660px;font-size:15.5px}
.sec-head{margin-bottom:34px}

/* ---------- BUTTONS ---------- */
.btn{display:inline-flex;align-items:center;gap:9px;padding:13px 26px;border-radius:7px;font-weight:700;font-size:14.5px;transition:.15s;cursor:pointer;border:none}
.btn-primary{background:var(--accent);color:#fff}
.btn-primary:hover{background:var(--accent-dk);transform:translateY(-1px)}
.btn-ghost{background:rgba(255,255,255,.08);color:#fff;border:1px solid rgba(255,255,255,.22)}
.btn-ghost:hover{background:rgba(255,255,255,.16)}
.btn-white{background:#fff;color:var(--accent-dk);font-weight:700;padding:14px 30px;border-radius:7px;display:inline-block;font-size:15px}
.btn-white:hover{background:#fff8f0}

/* ---------- CARDS (capabilities/generic) ---------- */
.cap-grid{display:grid;grid-template-columns:repeat(3,1fr);gap:18px}
.cap{background:var(--card);border:1px solid var(--line);border-radius:12px;padding:24px;transition:.15s}
.cap:hover{border-color:var(--blue);box-shadow:0 10px 30px rgba(47,127,181,.08);transform:translateY(-3px)}
.cap .ic{width:44px;height:44px;border-radius:10px;background:linear-gradient(135deg,var(--navy),var(--blue));display:flex;align-items:center;justify-content:center;margin-bottom:14px}
.cap .ic svg{width:22px;height:22px;stroke:#fff;fill:none;stroke-width:1.6}
.cap h3{font-size:16.5px;font-weight:700;color:var(--navy);margin-bottom:6px}
.cap p{font-size:13.5px;color:var(--muted);line-height:1.55}

/* ---------- PROOF STRIP ---------- */
.proof{background:#fff;border:3px solid var(--navy)}
.proof-inner{display:grid;grid-template-columns:repeat(4,1fr);gap:0;max-width:1140px;margin:0 auto}
.proof-cell{padding:12px 22px;text-align:center;border-right:1px solid var(--line)}
.proof-cell:last-child{border-right:none}
.proof-cell .n{font-size:22px;line-height:1.2;font-weight:800;color:var(--navy)}
.proof-cell .n .accent{color:var(--accent)}
.proof-cell .n .unit{font-size:16px;font-weight:700}
.proof-cell .l{font-size:12px;color:var(--muted);margin-top:1px}

/* ---------- BREADTH GRID (capabilities page) ---------- */
.breadth{display:grid;grid-template-columns:repeat(4,1fr);gap:14px}
.bcell{background:var(--card);border:1px solid var(--line);border-top:3px solid var(--blue);border-radius:10px;padding:18px 18px 16px;transition:.15s}
.bcell:hover{border-color:var(--blue);box-shadow:0 8px 22px rgba(47,127,181,.1);transform:translateY(-2px)}
.bcell .h{display:flex;align-items:center;gap:10px;font-size:14.5px;font-weight:700;color:var(--navy);margin-bottom:13px;line-height:1.25}
.bcell .h .bi{flex:0 0 30px;width:30px;height:30px;border-radius:7px;background:linear-gradient(135deg,var(--navy),var(--blue));display:flex;align-items:center;justify-content:center}
.bcell .h .bi svg{width:16px;height:16px;stroke:#fff;fill:none;stroke-width:1.8;stroke-linecap:round;stroke-linejoin:round}
.bcell .items{display:flex;flex-wrap:wrap;gap:6px}
.bcell .items span{font-size:12px;color:var(--ink);background:#eef3f7;border:1px solid #e1e8ee;padding:3px 10px;border-radius:14px;line-height:1.5}
.note-line{margin-top:28px;display:flex;align-items:center;gap:12px;flex-wrap:wrap;font-size:14.5px;color:var(--muted)}
.note-line:before{content:"";width:28px;height:3px;background:var(--accent);border-radius:2px}
.note-line a{color:var(--blue);font-weight:700}
.note-line a:hover{color:var(--navy)}
.note-line.center{justify-content:center}

/* ---------- PROJECTS ---------- */
.filters{display:flex;gap:10px;flex-wrap:wrap;margin-bottom:28px}
.filter{font-family:'JetBrains Mono',monospace;font-size:12.5px;font-weight:500;padding:7px 15px;border-radius:20px;border:1px solid var(--line);background:#fff;color:var(--muted);cursor:pointer;transition:.15s}
.filter:hover{border-color:var(--blue);color:var(--navy)}
.filter.active{background:var(--navy);color:#fff;border-color:var(--navy)}
.proj-grid{display:grid;grid-template-columns:repeat(3,1fr);gap:22px}
.proj{background:var(--card);border:1px solid var(--line);border-radius:12px;overflow:hidden;transition:.2s;display:flex;flex-direction:column}
.proj:hover{border-color:var(--blue);box-shadow:0 14px 34px rgba(13,33,55,.1);transform:translateY(-4px)}
.proj-img{height:170px;background:#0d2137;display:flex;align-items:center;justify-content:center;overflow:hidden;position:relative}
.proj-img img{width:100%;height:100%;object-fit:cover}
.proj-img.contain img{object-fit:contain;padding:16px}
.proj-img.light{background:#fff;border-bottom:1px solid var(--line)}
.proj-img.ph{background:linear-gradient(135deg,#12324f,#0d2137)}
.proj-img.ph .glyph{font-family:'JetBrains Mono',monospace;color:rgba(255,255,255,.22);font-size:13px;letter-spacing:1px;text-align:center;padding:0 20px}
.proj-tag{position:absolute;top:12px;left:12px;background:rgba(232,135,30,.95);color:#fff;font-size:10.5px;font-weight:700;text-transform:uppercase;letter-spacing:.5px;padding:4px 10px;border-radius:5px}
.proj-body{padding:18px 18px 20px;flex:1;display:flex;flex-direction:column}
.proj-body h3{font-size:16px;font-weight:700;color:var(--navy);margin-bottom:6px}
.proj-body p{font-size:13px;color:var(--muted);line-height:1.55;flex:1}
.proj-disc{display:flex;gap:6px;flex-wrap:wrap;margin-top:12px}
.chip{font-family:'JetBrains Mono',monospace;font-size:10.5px;color:var(--blue);background:#eaf3f9;padding:3px 8px;border-radius:4px;font-weight:500}

/* ---------- CREDENTIALS (about) ---------- */
.cred-grid{display:grid;grid-template-columns:repeat(4,1fr);gap:18px}
.cred{background:var(--card);border:1px solid var(--line);border-top:3px solid var(--blue);border-radius:12px;padding:24px}
.cred .k{font-size:11.5px;font-weight:700;letter-spacing:1.2px;text-transform:uppercase;color:var(--blue);margin-bottom:10px}
.cred h3{font-size:17px;font-weight:800;color:var(--navy);margin-bottom:6px}
.cred p{font-size:13px;color:var(--muted);line-height:1.55}

/* ---------- CTA ---------- */
.cta{background:linear-gradient(135deg,var(--accent),var(--accent-dk));color:#fff;text-align:center}
.cta h2{font-size:31px;font-weight:800;letter-spacing:-.3px}
.cta p{font-size:16.5px;color:#fff3e6;margin:12px auto 26px;max-width:560px}

/* ---------- FOOTER ---------- */
footer{background:var(--navy);color:var(--dark-muted);padding:38px 0 24px;border-top:1px solid rgba(255,255,255,.08)}
.foot{display:flex;justify-content:space-between;align-items:center;flex-wrap:wrap;gap:18px}
.foot .l{display:flex;align-items:center;gap:12px}
.foot .l .nm{color:#fff;font-weight:800;font-size:18px}
.foot .l img{height:24px;background:#fff;border-radius:3px;padding:2px 4px}
.foot .l .dba{font-size:12px}
.foot-links{display:flex;gap:20px;font-size:13.5px}
.foot-links a:hover{color:#fff}
.foot-bottom{border-top:1px solid rgba(255,255,255,.08);margin-top:24px;padding-top:18px;font-size:12px;display:flex;justify-content:space-between;flex-wrap:wrap;gap:10px}
.foot-bottom .usa{display:flex;align-items:center;gap:8px}
.foot-bottom .usa img{height:14px}

/* ---------- RESPONSIVE ---------- */
@media(max-width:900px){
  .cap-grid,.proj-grid{grid-template-columns:1fr 1fr}
  .cred-grid,.breadth{grid-template-columns:1fr 1fr}
  .proof-inner{grid-template-columns:1fr 1fr}
  .proof-cell:nth-child(2){border-right:none}
  nav{display:none}
}
@media(max-width:560px){
  .cap-grid,.proj-grid,.cred-grid,.breadth,.proof-inner{grid-template-columns:1fr}
  .proof-cell{border-right:none;border-bottom:1px solid var(--line)}
  .brand .amt{display:none}
  .page-hero h1{font-size:30px}
}

/* ---------- PROJECT LINKS (designs grid) ---------- */
a.proj{color:inherit;cursor:pointer}
.proj .more{margin-top:14px;font-size:13px;font-weight:700;color:var(--blue);display:flex;align-items:center;gap:6px;transition:.15s}
a.proj:hover .more{color:var(--accent);gap:10px}

/* ---------- DETAIL PAGES ---------- */
.crumb{font-size:12.5px;color:var(--dark-muted);margin-bottom:6px}
.crumb a{color:var(--blue-br);font-weight:600}
.crumb a:hover{color:#fff}
.dt-top{display:grid;grid-template-columns:.9fr 1.1fr;gap:44px;align-items:start}
.dt-media{background:#fff;border:1px solid var(--line);border-radius:14px;padding:24px;display:flex;flex-direction:column;gap:16px;align-items:center}
.dt-media img{max-height:380px;width:auto;object-fit:contain}
.dt-media .dt-cap{font-size:12px;color:var(--muted);text-align:center}
.dt-body p{font-size:15.5px;margin-bottom:15px;color:var(--ink)}
.dt-actions{display:flex;gap:12px;flex-wrap:wrap;margin-top:22px}
.btn-navy{background:var(--navy);color:#fff}
.btn-navy:hover{background:var(--navy2)}
.btn-outline{background:#fff;color:var(--navy);border:1px solid var(--line)}
.btn-outline:hover{border-color:var(--blue);color:var(--blue)}
.kstats{display:grid;grid-template-columns:repeat(4,1fr);gap:14px;margin-top:40px}
.kstat{background:#fff;border:1px solid var(--line);border-top:3px solid var(--accent);border-radius:10px;padding:16px 18px}
.kstat .v{font-size:19px;font-weight:800;color:var(--navy);line-height:1.25}
.kstat .t{font-size:12px;color:var(--muted);margin-top:3px}
.spec-grid{display:grid;grid-template-columns:1fr 1fr;gap:20px}
.spec-card{background:#fff;border:1px solid var(--line);border-top:3px solid var(--blue);border-radius:12px;overflow:hidden}
.spec-card h3{font-size:15px;font-weight:700;color:var(--navy);padding:16px 20px 10px}
table.spec{width:100%;border-collapse:collapse;font-size:13.5px}
table.spec th,table.spec td{padding:9px 20px;text-align:left;vertical-align:top;border-top:1px solid #edf1f4}
table.spec th{width:38%;font-weight:600;color:var(--navy);background:#f7f9fb}
table.spec td{color:var(--ink)}
.app-grid{display:grid;grid-template-columns:repeat(3,1fr);gap:16px}
.app{background:#fff;border:1px solid var(--line);border-radius:10px;padding:18px 20px}
.app h4{font-size:14.5px;font-weight:700;color:var(--navy);margin-bottom:5px}
.app p{font-size:13px;color:var(--muted);line-height:1.55}
.ticks{list-style:none;display:grid;grid-template-columns:1fr 1fr;gap:8px 24px}
.ticks li{position:relative;padding-left:22px;font-size:14.5px}
.ticks li:before{content:"";position:absolute;left:0;top:8px;width:10px;height:10px;border-radius:2px;background:var(--accent)}
.back-line{margin-top:36px;font-size:14px}
.back-line a{color:var(--blue);font-weight:700}
.back-line a:hover{color:var(--navy)}
@media(max-width:900px){
  .dt-top,.spec-grid{grid-template-columns:1fr;gap:26px}
  .kstats{grid-template-columns:1fr 1fr}
  .app-grid{grid-template-columns:1fr 1fr}
}
@media(max-width:560px){
  .app-grid,.ticks{grid-template-columns:1fr}
  table.spec th{width:44%}
}
.dt-gallery{display:grid;grid-template-columns:repeat(auto-fit,minmax(130px,1fr));gap:12px;width:100%}
.dt-gallery figure{background:#f7f9fb;border:1px solid var(--line);border-radius:8px;padding:8px;text-align:center}
.dt-gallery img{height:110px;width:100%;object-fit:contain}
.dt-gallery figcaption{font-size:11.5px;color:var(--muted);margin-top:6px}
.fnote{font-size:12px;color:var(--muted);margin-top:14px}
.spec-grid .spec-card:only-child{grid-column:1/-1}
.policy{max-width:820px}
.policy h2{font-size:17px;font-weight:700;color:var(--navy);margin:30px 0 10px;padding-left:12px;border-left:3px solid var(--blue)}
.policy p{font-size:15px;margin-bottom:12px}
.policy ul{margin:0 0 12px 22px;font-size:14.5px}
.policy li{margin-bottom:6px}
.policy a{color:var(--blue);font-weight:600}
.foot-bottom a{color:var(--dark-muted);text-decoration:underline}
.foot-bottom a:hover{color:#fff}