/* ============================================================
   Skyline Drone Surveys — stylesheet
   Palette drawn from the logo: navy #19232f, brand blue #0758a3
   Type: Space Grotesk (display) / Inter (body) / IBM Plex Mono (data)
   ============================================================ */

:root{
  --ink:        #03324e;
  --ink-deep:   #02243a;
  --slate:      #45525c;
  --slate-light:#8b959d;
  --cloud:      #eef1f4;
  --cloud-dim:  #dfe4e9;
  --white:      #ffffff;

  --blue:       #0a6ba8;
  --blue-dark:  #05537f;
  --blue-light: #4ca3d8;
  --blue-pale:  #dbecf7;

  --display: 'Space Grotesk', 'Arial Narrow', sans-serif;
  --body:    'Inter', -apple-system, Segoe UI, sans-serif;
  --mono:    'IBM Plex Mono', 'Courier New', monospace;

  --max: 1160px;
}

*{ box-sizing:border-box; margin:0; padding:0; }

html{ scroll-behavior:smooth; }

/* keep anchored sections clear of the sticky header */
section[id]{ scroll-margin-top:100px; }

body{
  font-family:var(--body);
  color:var(--ink);
  background:var(--white);
  line-height:1.55;
  -webkit-font-smoothing:antialiased;
}

img{ max-width:100%; display:block; }
a{ color:inherit; text-decoration:none; }
ul{ list-style:none; }

.wrap{
  max-width:var(--max);
  margin:0 auto;
  padding:0 32px;
}

/* ---------- focus ---------- */
a:focus-visible, button:focus-visible, input:focus-visible, textarea:focus-visible, select:focus-visible{
  outline:2px solid var(--blue-light);
  outline-offset:3px;
}

/* ---------- header ---------- */
header.site{
  background:var(--white);
  border-bottom:1px solid var(--cloud-dim);
  position:sticky;
  top:0;
  z-index:50;
}
header.site .wrap{
  display:flex;
  align-items:center;
  justify-content:space-between;
  padding-top:12px;
  padding-bottom:12px;
  gap:24px;
}
.logo{ display:block; flex:none; }
.logo img{ height:62px; width:auto; }
nav.primary ul{
  display:flex;
  gap:34px;
  font-size:14px;
  font-weight:500;
}
nav.primary a{ padding:4px 0; }
nav.primary a.current{ color:var(--blue); }
nav.primary a:not(.current):hover{ color:var(--slate); }
.header-cta{
  background:var(--blue);
  color:var(--white);
  font-size:13px;
  font-weight:600;
  padding:11px 20px;
  border-radius:2px;
  letter-spacing:.02em;
  flex:none;
}
.header-cta:hover{ background:var(--ink); }

/* ---------- hero ---------- */
.hero{
  background:
    linear-gradient(180deg, rgba(2,30,48,.90), rgba(2,30,48,.72)),
    repeating-linear-gradient(0deg, rgba(255,255,255,.05) 0 1px, transparent 1px 64px),
    repeating-linear-gradient(90deg, rgba(255,255,255,.05) 0 1px, transparent 1px 64px),
    linear-gradient(160deg,#0a4468,#02202f);
  color:var(--white);
  padding:96px 0 84px;
}
.hero .wrap{
  max-width:calc(var(--max) - 40px);
}
.eyebrow{
  font-family:var(--mono);
  font-size:12px;
  letter-spacing:.14em;
  text-transform:uppercase;
  color:var(--blue-light);
  margin-bottom:18px;
  display:flex;
  align-items:center;
  gap:10px;
}
.eyebrow::before{
  content:'';
  width:7px;height:7px;
  background:var(--blue-light);
  border-radius:50%;
  display:inline-block;
  box-shadow:0 0 0 3px rgba(76,163,216,.28);
}
.hero h1{
  font-family:var(--display);
  font-weight:700;
  font-size:clamp(34px,4.6vw,58px);
  line-height:1.04;
  letter-spacing:-.015em;
  max-width:15ch;
}
.hero p.lede{
  margin-top:22px;
  font-size:17px;
  color:#c7ccd1;
  max-width:46ch;
}
.hero-actions{
  margin-top:34px;
  display:flex;
  gap:16px;
  align-items:center;
  flex-wrap:wrap;
}
.btn{
  display:inline-block;
  font-weight:600;
  font-size:14.5px;
  padding:14px 26px;
  border-radius:2px;
  letter-spacing:.01em;
  border:1px solid transparent;
  transition:background .15s ease, color .15s ease, border-color .15s ease;
}
.btn-primary{
  background:var(--blue);
  color:var(--white);
}
.btn-primary:hover{ background:var(--blue-light); }
.btn-white{
  background:var(--white);
  color:var(--ink);
}
.btn-white:hover{ background:var(--blue-pale); }
.btn-outline{
  border-color:rgba(255,255,255,.35);
  color:var(--white);
}
.btn-outline:hover{ border-color:var(--white); }

/* ---------- section basics ---------- */
section{ padding:88px 0; }
.section-head{
  max-width:60ch;
  margin-bottom:52px;
}
.section-head .eyebrow{ color:var(--blue); }
.section-head .eyebrow::before{ background:var(--blue); box-shadow:0 0 0 3px rgba(10,107,168,.16); }
.section-head h2{
  font-family:var(--display);
  font-weight:700;
  font-size:clamp(26px,3vw,36px);
  letter-spacing:-.01em;
  color:var(--ink);
}
.section-head p{
  margin-top:14px;
  color:var(--slate);
  font-size:15.5px;
}
.on-dark .section-head h2{ color:var(--white); }
.on-dark .section-head p{ color:#b7bfc4; }

/* ---------- services ---------- */
.manifest-list{ border-top:1px solid var(--cloud-dim); }
.manifest-item{
  display:grid;
  grid-template-columns:110px 1fr 1.2fr;
  gap:28px;
  padding:28px 0;
  border-bottom:1px solid var(--cloud-dim);
  align-items:start;
}
.manifest-item .callsign{
  font-family:var(--mono);
  font-size:12px;
  color:var(--blue);
  letter-spacing:.06em;
  padding-top:3px;
}
.manifest-item h3{
  font-family:var(--display);
  font-size:19px;
  font-weight:700;
}
.manifest-item p{
  color:var(--slate);
  font-size:14.5px;
}

/* ---------- stats ---------- */
.stats{
  background:var(--ink);
  color:var(--white);
  padding:72px 0;
}
.stats-grid{
  display:grid;
  grid-template-columns:repeat(3,1fr);
  gap:40px;
}
.stat b{
  font-family:var(--display);
  font-size:clamp(28px,3.4vw,42px);
  color:var(--blue-light);
  display:block;
  line-height:1;
}
.stat span{
  display:block;
  margin-top:12px;
  font-family:var(--mono);
  font-size:11.5px;
  letter-spacing:.06em;
  text-transform:uppercase;
  color:#9aa3a9;
}

/* ---------- process ---------- */
.process-grid{
  display:grid;
  grid-template-columns:repeat(3,1fr);
  border-top:1px solid var(--cloud-dim);
  border-left:1px solid var(--cloud-dim);
}
.process-step{
  border-right:1px solid var(--cloud-dim);
  border-bottom:1px solid var(--cloud-dim);
  padding:30px 28px;
}
.process-step .num{
  font-family:var(--mono);
  font-size:12px;
  color:var(--blue);
}
.process-step h3{
  font-family:var(--display);
  font-size:18px;
  margin:14px 0 10px;
}
.process-step p{
  color:var(--slate);
  font-size:14.5px;
}

/* ---------- deliverable band ---------- */
.deliverable{ background:var(--cloud); }
.deliverable .wrap{
  max-width:calc(var(--max) - 40px);
}
.deliverable h2{
  font-family:var(--display);
  font-weight:700;
  font-size:clamp(24px,3vw,32px);
  letter-spacing:-.01em;
}
.deliverable ul{
  margin-top:24px;
  display:grid;
  grid-template-columns:1fr 1fr;
  column-gap:48px;
}
.deliverable li{
  font-size:14.5px;
  color:var(--slate);
  padding:9px 0;
  border-bottom:1px solid var(--cloud-dim);
  display:flex;
  gap:10px;
}
.deliverable li::before{
  content:'';
  width:6px;height:6px;
  margin-top:7px;
  background:var(--blue);
  flex:none;
}

/* ---------- CTA band ---------- */
.cta-band{
  background:var(--blue);
  color:var(--white);
  text-align:center;
}
.cta-band h2{
  font-family:var(--display);
  font-weight:700;
  font-size:clamp(24px,3vw,34px);
  max-width:20ch;
  margin:0 auto;
}
.cta-band p{
  margin-top:14px;
  color:#dbe8f6;
}
.cta-band .hero-actions{ justify-content:center; margin-top:28px; }

/* ---------- footer ---------- */
footer.site{
  background:var(--ink-deep);
  color:#98a2aa;
  padding:56px 0 28px;
  font-size:13.5px;
}
.footer-grid{
  display:grid;
  grid-template-columns:1.4fr 1fr 1fr;
  gap:40px;
  padding-bottom:36px;
  border-bottom:1px solid rgba(255,255,255,.1);
}
.footer-grid h4{
  font-family:var(--mono);
  font-size:11px;
  letter-spacing:.1em;
  text-transform:uppercase;
  color:var(--slate-light);
  margin-bottom:14px;
}
.footer-grid .logo img{ height:88px; }
.footer-grid p{ max-width:34ch; margin-top:16px; }
.footer-grid li{ padding:5px 0; }
.footer-grid a:hover{ color:var(--white); }
.social{
  display:inline-flex;
  align-items:center;
  gap:9px;
  color:#98a2aa;
  transition:color .15s ease;
}
.social:hover{ color:var(--white); }
.social svg{ display:block; }

.footer-bottom{
  padding-top:22px;
  display:flex;
  justify-content:space-between;
  font-size:12px;
  gap:16px;
  flex-wrap:wrap;
}

/* ---------- contact page ---------- */
.contact-hero{
  background:var(--ink);
  color:var(--white);
  padding:64px 0 56px;
}
.contact-hero h1{
  font-family:var(--display);
  font-weight:700;
  font-size:clamp(30px,4vw,44px);
  max-width:16ch;
}
.contact-hero p{
  margin-top:16px;
  color:#c7ccd1;
  max-width:52ch;
}
.contact-layout{ padding:72px 0 96px; }
.contact-layout .wrap{
  display:grid;
  grid-template-columns:1fr 1.3fr;
  gap:64px;
  align-items:start;
}
.contact-info h3{
  font-family:var(--display);
  font-size:18px;
  margin-bottom:14px;
}
.contact-info .block{ padding:20px 0; border-top:1px solid var(--cloud-dim); }
.contact-info .block:last-child{ border-bottom:1px solid var(--cloud-dim); }
.contact-info .label{
  font-family:var(--mono);
  font-size:11px;
  letter-spacing:.08em;
  text-transform:uppercase;
  color:var(--blue);
  margin-bottom:6px;
}
.contact-info .value{ font-size:15px; color:var(--ink); }
.contact-info .value a:hover{ color:var(--blue); }
.contact-info .value small{ color:var(--slate); display:block; font-size:13px; margin-top:2px; }

form.survey{
  background:var(--cloud);
  padding:36px;
  border:1px solid var(--cloud-dim);
}
.field-row{
  display:grid;
  grid-template-columns:1fr 1fr;
  gap:18px;
}
.field{ margin-bottom:18px; }
.field label{
  display:block;
  font-family:var(--mono);
  font-size:11px;
  letter-spacing:.06em;
  text-transform:uppercase;
  color:var(--slate);
  margin-bottom:7px;
}
.field input, .field select, .field textarea{
  width:100%;
  border:1px solid var(--cloud-dim);
  background:var(--white);
  padding:12px 13px;
  font-family:var(--body);
  font-size:14.5px;
  color:var(--ink);
  border-radius:2px;
}
.field textarea{ resize:vertical; min-height:110px; }
.field input:focus, .field select:focus, .field textarea:focus{ border-color:var(--blue); }
form.survey .btn-primary{
  border:none;
  cursor:pointer;
  width:100%;
  font-size:15px;
  padding:15px 26px;
}
.form-note{
  font-size:12.5px;
  color:var(--slate);
  margin-top:14px;
}

/* ---------- form states ---------- */
.hp{ position:absolute; left:-9999px; width:1px; height:1px; overflow:hidden; }

.form-status{
  padding:32px 36px;
  border:1px solid var(--cloud-dim);
  border-left:4px solid var(--blue);
  background:var(--cloud);
}
.form-status h3{
  font-family:var(--display);
  font-size:20px;
  margin-bottom:8px;
  color:var(--ink);
}
.form-status p{ color:var(--slate); font-size:15px; }
.form-status.err{ border-left-color:#b3391f; }
.form-status a{ color:var(--blue); text-decoration:underline; }

form.survey button[disabled]{ opacity:.6; cursor:progress; }

/* ---------- responsive ---------- */
@media (max-width:860px){
  .contact-layout .wrap{ grid-template-columns:1fr; }
  .deliverable ul{ grid-template-columns:1fr; }
  .stats-grid{ grid-template-columns:1fr; gap:28px; text-align:center; }
  .process-grid{ grid-template-columns:1fr; }
  .manifest-item{ grid-template-columns:1fr; gap:8px; }
  .footer-grid{ grid-template-columns:1fr; gap:28px; }
  .field-row{ grid-template-columns:1fr; }
  nav.primary{ display:none; }
  .logo img{ height:48px; }
  .wrap{ padding:0 20px; }
  section{ padding:64px 0; }
  form.survey{ padding:24px; }
}

@media (prefers-reduced-motion: reduce){
  html{ scroll-behavior:auto; }
  *{ transition:none !important; }
}