/* ==========================================================================
   Civil Buff — Main Stylesheet
   Stack: Plain CSS3 (no framework). Custom properties + Grid + Flexbox.
   Sections: tokens / base / buttons / nav / hero / trust / about /
             services / deliverables / who / process / quotes / contact /
             footer / reveal / responsive
   ========================================================================== */

/* ---------- 1. Design tokens ---------- */
:root {
  --ink: #0E1B2E;
  --slate: #55647E;
  --paper: #FFFFFF;
  --mist: #F4F7FB;
  --line: #E3E9F2;
  --blue: #2E7FD8;
  --violet: #7A55C8;
  --magenta: #D0338F;
  --grad: linear-gradient(120deg, #2E7FD8 0%, #7A55C8 52%, #D0338F 100%);
  --radius: 14px;
  --display: 'Sora', sans-serif;
  --body: 'IBM Plex Sans', sans-serif;
  --mono: 'IBM Plex Mono', monospace;
}

/* ---------- 2. Base ---------- */
* { margin: 0; padding: 0; box-sizing: border-box; }
html { scroll-behavior: smooth; }
body {
  font-family: var(--body);
  color: var(--ink);
  background: var(--paper);
  line-height: 1.6;
  font-size: 16px;
  -webkit-font-smoothing: antialiased;
}
img { max-width: 100%; display: block; }
a { text-decoration: none; color: inherit; }
.wrap { max-width: 1180px; margin: 0 auto; padding: 0 24px; }
section { padding: 96px 0; }
h1, h2, h3 { font-family: var(--display); line-height: 1.15; }
h2 { font-size: clamp(28px, 3.6vw, 42px); font-weight: 700; letter-spacing: -.01em; }

.eyebrow {
  font-family: var(--mono);
  font-size: 12.5px;
  letter-spacing: .14em;
  text-transform: uppercase;
  color: var(--magenta);
  display: inline-flex;
  align-items: center;
  gap: 10px;
  margin-bottom: 16px;
}
.eyebrow::before { content: ""; width: 26px; height: 2px; background: var(--grad); border-radius: 2px; }
.lead { color: var(--slate); font-size: 17.5px; max-width: 640px; }
.grad-text { background: var(--grad); -webkit-background-clip: text; background-clip: text; color: transparent; }

/* ---------- 3. Buttons ---------- */
.btn {
  display: inline-flex;
  align-items: center;
  gap: 10px;
  font-family: var(--display);
  font-weight: 600;
  font-size: 15px;
  padding: 14px 26px;
  border-radius: 999px;
  transition: transform .18s ease, box-shadow .18s ease;
  cursor: pointer;
  border: none;
}
.btn-grad { background: var(--grad); color: #fff; box-shadow: 0 8px 24px rgba(122, 85, 200, .28); }
.btn-grad:hover { transform: translateY(-2px); box-shadow: 0 12px 30px rgba(122, 85, 200, .38); }
.btn-ghost { border: 1.5px solid var(--line); color: var(--ink); background: #fff; }
.btn-ghost:hover { border-color: var(--blue); color: var(--blue); }
.btn:focus-visible, a:focus-visible { outline: 3px solid var(--blue); outline-offset: 3px; border-radius: 6px; }

/* ---------- 4. Nav ---------- */
header.site-header {
  position: sticky;
  top: 0;
  z-index: 50;
  background: rgba(255, 255, 255, .86);
  backdrop-filter: blur(14px);
  border-bottom: 1px solid var(--line);
}
.nav { display: flex; align-items: center; justify-content: space-between; height: 74px; }
.brand { display: flex; align-items: center; gap: 12px; }
.brand img, .brand svg { width: 44px; height: 44px; }
.brand-name { font-family: var(--display); font-weight: 800; font-size: 20px; letter-spacing: -.01em; }
.brand-name span { background: var(--grad); -webkit-background-clip: text; background-clip: text; color: transparent; }
.brand-tag {
  font-family: var(--mono);
  font-size: 10px;
  letter-spacing: .16em;
  text-transform: uppercase;
  color: var(--slate);
  display: block;
  margin-top: 1px;
}
.nav-links { display: flex; align-items: center; gap: 32px; list-style: none; }
.nav-links a { font-size: 15px; font-weight: 500; color: var(--slate); transition: color .15s; }
.nav-links a:hover { color: var(--ink); }
.nav-cta { display: flex; align-items: center; gap: 14px; }
.nav-cta .btn { padding: 10px 20px; font-size: 14px; }
.menu-btn { display: none; background: none; border: none; cursor: pointer; padding: 8px; }
.menu-btn span { display: block; width: 22px; height: 2px; background: var(--ink); margin: 5px 0; border-radius: 2px; }

/* ---------- 5. Hero image slider ---------- */
.hero-slider {
  position: relative;
  height: min(88vh, 720px);
  min-height: 540px;
  overflow: hidden;
  background: var(--ink);
}
.slide {
  position: absolute;
  inset: 0;
  opacity: 0;
  visibility: hidden;
  transition: opacity .8s ease, visibility .8s ease;
  display: flex;
  align-items: center;
}
.slide.is-active { opacity: 1; visibility: visible; z-index: 1; }
.slide-bg {
  position: absolute;
  inset: 0;
  width: 100%;
  height: 100%;
  object-fit: cover;
  z-index: 0;
}
/* Dark scrim so white text stays readable over any photo */
.slide::after {
  content: "";
  position: absolute;
  inset: 0;
  background: linear-gradient(100deg, rgba(10, 18, 33, .88) 0%, rgba(10, 18, 33, .62) 48%, rgba(10, 18, 33, .25) 100%);
  z-index: 1;
}
.slide-content { position: relative; z-index: 2; color: #fff; width: 100%; }
.slide-content .eyebrow { color: #FF7BC8; }
.slide-content h1 {
  font-size: clamp(36px, 5.2vw, 60px);
  font-weight: 800;
  letter-spacing: -.02em;
  margin: 16px 0 20px;
  max-width: 640px;
}
.slide-content p { color: #C6D0DF; font-size: 17.5px; max-width: 540px; margin-bottom: 32px; }
.btn-light { background: rgba(255, 255, 255, .12); color: #fff; border: 1.5px solid rgba(255, 255, 255, .35); backdrop-filter: blur(4px); }
.btn-light:hover { background: rgba(255, 255, 255, .22); }
.hero-actions { display: flex; gap: 14px; flex-wrap: wrap; }

/* Slide entrance animation for content */
.slide.is-active .slide-content > * { animation: slideUp .7s ease both; }
.slide.is-active .slide-content > *:nth-child(2) { animation-delay: .1s; }
.slide.is-active .slide-content > *:nth-child(3) { animation-delay: .2s; }
.slide.is-active .slide-content > *:nth-child(4) { animation-delay: .3s; }
@keyframes slideUp { from { opacity: 0; transform: translateY(24px); } to { opacity: 1; transform: none; } }

/* Arrows */
.slider-arrow {
  position: absolute;
  top: 50%;
  transform: translateY(-50%);
  z-index: 3;
  width: 48px;
  height: 48px;
  border-radius: 50%;
  border: 1.5px solid rgba(255, 255, 255, .35);
  background: rgba(255, 255, 255, .10);
  color: #fff;
  font-size: 26px;
  line-height: 1;
  cursor: pointer;
  backdrop-filter: blur(4px);
  transition: background .15s;
}
.slider-arrow:hover { background: rgba(255, 255, 255, .25); }
.slider-arrow.prev { left: 22px; }
.slider-arrow.next { right: 22px; }
.slider-arrow:focus-visible { outline: 3px solid var(--blue); outline-offset: 3px; }

/* Dots */
.slider-dots {
  position: absolute;
  bottom: 26px;
  left: 50%;
  transform: translateX(-50%);
  z-index: 3;
  display: flex;
  gap: 10px;
}
.dot {
  width: 34px;
  height: 5px;
  border-radius: 3px;
  border: none;
  background: rgba(255, 255, 255, .35);
  cursor: pointer;
  transition: background .2s;
  padding: 0;
}
.dot.is-active { background: var(--grad); }
.dot:focus-visible { outline: 3px solid var(--blue); outline-offset: 3px; }

/* ---------- 6. Trust strip ---------- */
.trust { background: var(--ink); color: #fff; padding: 64px 0; }
.trust .wrap { display: grid; grid-template-columns: repeat(3, 1fr); gap: 44px; }
.trust h3 { font-size: 19px; margin-bottom: 8px; font-weight: 600; }
.trust p { color: #AFBBCE; font-size: 15px; }
.trust .k {
  font-family: var(--mono);
  font-size: 11.5px;
  letter-spacing: .14em;
  text-transform: uppercase;
  background: var(--grad);
  -webkit-background-clip: text;
  background-clip: text;
  color: transparent;
  display: block;
  margin-bottom: 12px;
}

/* ---------- 7. About ---------- */
.about .wrap { display: grid; grid-template-columns: 1fr 1fr; gap: 70px; align-items: center; }
.about-card { background: var(--mist); border: 1px solid var(--line); border-radius: var(--radius); padding: 36px; }
.about-card ul { list-style: none; display: grid; gap: 16px; }
.about-card li { display: flex; gap: 14px; font-size: 15.5px; color: var(--ink); }
.tick {
  flex: none;
  width: 22px;
  height: 22px;
  border-radius: 50%;
  background: var(--grad);
  color: #fff;
  display: grid;
  place-items: center;
  font-size: 12px;
  margin-top: 2px;
}

/* ---------- 8. Services ---------- */
.services { background: var(--mist); }
.sec-head { max-width: 720px; margin-bottom: 52px; }
.svc-grid { display: grid; grid-template-columns: repeat(3, 1fr); gap: 22px; }
.svc {
  background: #fff;
  border: 1px solid var(--line);
  border-radius: var(--radius);
  position: relative;
  transition: transform .2s ease, box-shadow .2s ease;
  overflow: hidden;
  display: flex;
  flex-direction: column;
}
.svc::after { content: ""; position: absolute; left: 0; top: 0; bottom: 0; width: 4px; background: var(--grad); opacity: 0; transition: opacity .2s; }
.svc:hover { transform: translateY(-4px); box-shadow: 0 18px 44px rgba(14, 27, 46, .10); }
.svc:hover::after { opacity: 1; }
.svc-img {
  width: 100%;
  height: 175px;
  object-fit: cover;
  border-bottom: 1px solid var(--line);
  transition: transform .35s ease;
}
.svc:hover .svc-img { transform: scale(1.04); }
.svc-body { padding: 22px 26px 26px; display: flex; flex-direction: column; flex: 1; }
.svc code { font-family: var(--mono); font-size: 11.5px; letter-spacing: .1em; color: var(--magenta); }
.svc h3 { font-size: 18px; font-weight: 600; margin: 10px 0 10px; }
.svc p { color: var(--slate); font-size: 14.5px; }
.svc a { display: inline-flex; align-items: center; gap: 6px; margin-top: auto; padding-top: 16px; font-weight: 600; font-size: 14px; color: var(--blue); }
.svc a:hover { color: var(--magenta); }

/* ---------- 9. Deliverables ---------- */
.deliv .wrap { display: grid; grid-template-columns: .9fr 1.1fr; gap: 70px; align-items: start; }
.deliv-list { display: grid; gap: 0; }
.deliv-item { display: grid; grid-template-columns: 56px 1fr; gap: 20px; padding: 26px 0; border-bottom: 1px solid var(--line); }
.deliv-item:first-child { padding-top: 0; }
.deliv-num {
  font-family: var(--mono);
  font-size: 13px;
  color: #fff;
  background: var(--grad);
  width: 44px;
  height: 44px;
  border-radius: 12px;
  display: grid;
  place-items: center;
}
.deliv-item h3 { font-size: 17.5px; font-weight: 600; margin-bottom: 6px; }
.deliv-item p { color: var(--slate); font-size: 15px; }

/* ---------- 10. Who we work with ---------- */
.who { background: var(--ink); color: #fff; }
.who .eyebrow { color: #FF7BC8; }
.who .lead { color: #AFBBCE; }
.who-grid { display: grid; grid-template-columns: 1fr 1fr; gap: 22px; margin-top: 48px; }
.who-card { border: 1px solid rgba(255, 255, 255, .14); border-radius: var(--radius); padding: 34px; background: rgba(255, 255, 255, .03); }
.who-card h3 { font-size: 20px; margin-bottom: 18px; font-weight: 600; }
.who-card ul { list-style: none; display: grid; gap: 10px; color: #C6D0DF; font-size: 15px; }
.who-card li { display: flex; gap: 12px; }
.who-card li::before {
  content: "—";
  background: var(--grad);
  -webkit-background-clip: text;
  background-clip: text;
  color: transparent;
  font-weight: 700;
}

/* ---------- 11. Process ---------- */
.process-grid { display: grid; grid-template-columns: repeat(3, 1fr); gap: 22px; margin-top: 48px; }
.step { background: #fff; border: 1px solid var(--line); border-radius: var(--radius); padding: 30px; position: relative; }
.step code { font-family: var(--mono); font-size: 12px; color: var(--slate); }
.step h3 { font-size: 18px; font-weight: 600; margin: 14px 0 10px; }
.step p { color: var(--slate); font-size: 14.5px; }
.step .bar { height: 4px; width: 44px; background: var(--grad); border-radius: 2px; margin-top: 12px; }

/* ---------- 12. Testimonials ---------- */
.quotes { background: var(--mist); }
.quote-grid { display: grid; grid-template-columns: 1fr 1fr; gap: 22px; margin-top: 48px; }
.quote { background: #fff; border: 1px solid var(--line); border-radius: var(--radius); padding: 32px; }
.stars { color: var(--magenta); letter-spacing: 3px; font-size: 14px; margin-bottom: 14px; }
.quote p { color: var(--ink); font-size: 15.5px; }
.quote footer { margin-top: 18px; display: flex; align-items: center; gap: 12px; }
.avatar {
  width: 42px;
  height: 42px;
  border-radius: 50%;
  background: var(--grad);
  color: #fff;
  display: grid;
  place-items: center;
  font-family: var(--display);
  font-weight: 700;
  font-size: 15px;
}
.quote footer b { display: block; font-size: 14.5px; }
.quote footer small { color: var(--slate); font-size: 13px; }

/* ---------- 13. Contact ---------- */
.contact .wrap { display: grid; grid-template-columns: 1fr 1fr; gap: 70px; align-items: start; }
.c-item { display: flex; gap: 16px; padding: 20px 0; border-bottom: 1px solid var(--line); }
.c-icon { flex: none; width: 46px; height: 46px; border-radius: 12px; background: var(--mist); display: grid; place-items: center; color: var(--blue); }
.c-item h4 { font-size: 15.5px; font-weight: 600; }
.c-item p { color: var(--slate); font-size: 15px; }
.form-card { background: #fff; border: 1px solid var(--line); border-radius: var(--radius); padding: 36px; box-shadow: 0 20px 50px rgba(14, 27, 46, .08); }
.form-card h3 { font-size: 22px; margin-bottom: 6px; }
.form-card > p { color: var(--slate); font-size: 14.5px; margin-bottom: 24px; }
.field { margin-bottom: 18px; }
.field label { display: block; font-size: 13.5px; font-weight: 600; margin-bottom: 7px; }
.field input, .field textarea {
  width: 100%;
  border: 1.5px solid var(--line);
  border-radius: 10px;
  padding: 13px 15px;
  font-family: var(--body);
  font-size: 15px;
  color: var(--ink);
  background: #FBFCFE;
  transition: border-color .15s;
}
.field input:focus, .field textarea:focus { outline: none; border-color: var(--blue); }
.field textarea { min-height: 120px; resize: vertical; }
.form-note { font-size: 13px; color: var(--slate); margin-top: 14px; }

/* ---------- 14. Footer ---------- */
footer.site { background: var(--ink); color: #AFBBCE; padding: 56px 0 30px; }
.foot-top { display: grid; grid-template-columns: 1.4fr 1fr 1fr; gap: 44px; padding-bottom: 40px; border-bottom: 1px solid rgba(255, 255, 255, .12); }
.foot-top h5 { color: #fff; font-family: var(--display); font-size: 15px; margin-bottom: 16px; }
.foot-top ul { list-style: none; display: grid; gap: 9px; font-size: 14.5px; }
.foot-top a:hover { color: #fff; }
.foot-brand p { font-size: 14.5px; max-width: 320px; margin-top: 14px; }
.foot-bottom { display: flex; justify-content: space-between; gap: 16px; padding-top: 26px; font-size: 13.5px; flex-wrap: wrap; }
.foot-bottom span b { background: var(--grad); -webkit-background-clip: text; background-clip: text; color: transparent; }

/* ---------- 15. Scroll reveal ---------- */
.reveal { opacity: 0; transform: translateY(22px); transition: opacity .6s ease, transform .6s ease; }
.reveal.in { opacity: 1; transform: none; }
@media (prefers-reduced-motion: reduce) {
  html { scroll-behavior: auto; }
  .reveal { opacity: 1; transform: none; transition: none; }
  .btn, .svc, .svc-img, .slide { transition: none; }
  .slide.is-active .slide-content > * { animation: none; }
}

/* ---------- 16. Responsive ---------- */
@media (max-width: 980px) {
  .about .wrap, .deliv .wrap, .contact .wrap { grid-template-columns: 1fr; gap: 48px; }
  .slider-arrow { display: none; }
  .svc-grid, .trust .wrap, .process-grid { grid-template-columns: 1fr 1fr; }
  .nav-links { display: none; }
  .menu-btn { display: block; }
  .nav-open .nav-links {
    display: flex;
    position: absolute;
    top: 74px;
    left: 0;
    right: 0;
    background: #fff;
    flex-direction: column;
    align-items: flex-start;
    padding: 20px 24px;
    gap: 18px;
    border-bottom: 1px solid var(--line);
  }
}
@media (max-width: 640px) {
  section { padding: 70px 0; }
  .hero-slider { height: auto; min-height: 0; }
  .slide { position: relative; inset: auto; display: none; padding: 90px 0 110px; }
  .slide.is-active { display: flex; }
  .svc-grid, .trust .wrap, .who-grid, .quote-grid, .process-grid { grid-template-columns: 1fr; }
  .foot-top { grid-template-columns: 1fr; }
  .nav-cta .btn { display: none; }
}

/* ---------- 17. 404 page ---------- */
.notfound { min-height: 60vh; display: grid; place-items: center; text-align: center; }
.notfound h1 { font-size: clamp(64px, 12vw, 120px); font-weight: 800; }
.notfound p { color: var(--slate); margin: 10px 0 28px; }