/* ==========================================================
   ASD Installation — styles
   ========================================================== */

:root {
  --navy-900: #0b1524;
  --navy-800: #0f1c2e;
  --navy-700: #16273f;
  --navy-600: #22385a;
  --blue: #39a0ff;
  --blue-dark: #1d7fdb;
  --ink: #142033;
  --muted: #5a6779;
  --line: #dfe5ec;
  --bg: #ffffff;
  --bg-alt: #f3f6f9;
  --radius: 10px;
  --shadow: 0 10px 30px rgba(15, 28, 46, 0.08);
  --font-head: "Space Grotesk", system-ui, sans-serif;
  --font-body: "Inter", system-ui, -apple-system, "Segoe UI", sans-serif;
  --header-h: 72px;
}

*,
*::before,
*::after {
  box-sizing: border-box;
}

html {
  scroll-behavior: smooth;
  scroll-padding-top: var(--header-h);
}

body {
  margin: 0;
  font-family: var(--font-body);
  font-size: 16px;
  line-height: 1.6;
  color: var(--ink);
  background: var(--bg);
  -webkit-font-smoothing: antialiased;
}

h1, h2, h3 {
  font-family: var(--font-head);
  line-height: 1.15;
  margin: 0 0 0.5em;
  letter-spacing: -0.01em;
}

h1 { font-size: clamp(2.3rem, 5vw, 3.6rem); }
h2 { font-size: clamp(1.8rem, 3.4vw, 2.5rem); }
h3 { font-size: 1.2rem; }

p { margin: 0 0 1em; }

a { color: inherit; }

.container {
  width: 100%;
  max-width: 1160px;
  margin: 0 auto;
  padding: 0 24px;
}

.eyebrow {
  font-family: var(--font-head);
  font-size: 0.8rem;
  font-weight: 600;
  letter-spacing: 0.14em;
  text-transform: uppercase;
  color: var(--blue-dark);
  margin-bottom: 0.75rem;
}

/* ---------- Buttons ---------- */
.btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: 0.5rem;
  padding: 0.85rem 1.4rem;
  border: 2px solid var(--blue);
  border-radius: 6px;
  background: var(--blue);
  color: var(--navy-900);
  font-family: var(--font-head);
  font-weight: 600;
  font-size: 1rem;
  text-decoration: none;
  cursor: pointer;
  transition: background 0.2s, border-color 0.2s, color 0.2s, transform 0.2s;
}

.btn:hover {
  background: #62b4ff;
  border-color: #62b4ff;
  transform: translateY(-1px);
}

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

.btn-ghost {
  background: transparent;
  color: #fff;
  border-color: rgba(255, 255, 255, 0.35);
}

.btn-ghost:hover {
  background: rgba(255, 255, 255, 0.08);
  border-color: #fff;
}

.btn-small {
  padding: 0.5rem 1rem;
  font-size: 0.9rem;
}

.btn-full { width: 100%; }

/* ---------- Header ---------- */
.site-header {
  position: sticky;
  top: 0;
  z-index: 50;
  background: rgba(11, 21, 36, 0.92);
  backdrop-filter: blur(10px);
  -webkit-backdrop-filter: blur(10px);
  border-bottom: 1px solid rgba(255, 255, 255, 0.06);
  transition: box-shadow 0.2s;
}

.site-header.scrolled {
  box-shadow: 0 6px 20px rgba(0, 0, 0, 0.25);
}

.header-inner {
  display: flex;
  align-items: center;
  justify-content: space-between;
  height: var(--header-h);
}

.logo {
  display: inline-flex;
  align-items: center;
  gap: 0.6rem;
  text-decoration: none;
  color: #fff;
}

.logo-mark {
  width: 28px;
  height: 28px;
  color: var(--blue);
}

.logo-text {
  font-family: var(--font-head);
  font-size: 1.15rem;
  font-weight: 500;
  letter-spacing: 0.02em;
}

.logo-text strong { font-weight: 700; }

.site-nav {
  display: flex;
  align-items: center;
  gap: 2rem;
}

.site-nav a:not(.btn) {
  color: rgba(255, 255, 255, 0.8);
  text-decoration: none;
  font-size: 0.95rem;
  font-weight: 500;
  transition: color 0.2s;
}

.site-nav a:not(.btn):hover { color: #fff; }

.nav-toggle {
  display: none;
  width: 44px;
  height: 44px;
  padding: 10px;
  border: 0;
  background: transparent;
  cursor: pointer;
}

.nav-toggle span {
  display: block;
  height: 2px;
  margin: 5px 0;
  background: #fff;
  transition: transform 0.25s, opacity 0.25s;
}

.nav-toggle[aria-expanded="true"] span:nth-child(1) { transform: translateY(7px) rotate(45deg); }
.nav-toggle[aria-expanded="true"] span:nth-child(2) { opacity: 0; }
.nav-toggle[aria-expanded="true"] span:nth-child(3) { transform: translateY(-7px) rotate(-45deg); }

/* ---------- Hero ---------- */
.hero {
  position: relative;
  overflow: hidden;
  background:
    radial-gradient(1200px 500px at 85% 10%, rgba(57, 160, 255, 0.18), transparent 60%),
    linear-gradient(180deg, var(--navy-900), var(--navy-800));
  color: #fff;
  padding: 96px 0 0;
}

.hero-inner {
  display: grid;
  grid-template-columns: 1.15fr 0.85fr;
  gap: 48px;
  align-items: center;
}

.hero .eyebrow { color: var(--blue); }

.hero .lead {
  font-size: 1.15rem;
  color: rgba(255, 255, 255, 0.78);
  max-width: 36rem;
}

.hero-actions {
  display: flex;
  flex-wrap: wrap;
  gap: 12px;
  margin-top: 2rem;
}

/* Abstract building facade made of window panes */
.hero-visual {
  display: flex;
  justify-content: center;
}

.facade {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 14px;
  width: min(100%, 340px);
  padding: 22px;
  border: 1px solid rgba(255, 255, 255, 0.12);
  border-radius: 6px;
  background: rgba(255, 255, 255, 0.03);
}

.facade span {
  position: relative;
  aspect-ratio: 3 / 4;
  border: 2px solid rgba(255, 255, 255, 0.25);
  background: linear-gradient(135deg, rgba(57, 160, 255, 0.08), rgba(57, 160, 255, 0.02));
  opacity: 0.35;
  transition: opacity 0.6s, border-color 0.6s, background 0.6s;
}

.facade span::before,
.facade span::after {
  content: "";
  position: absolute;
  background: rgba(255, 255, 255, 0.2);
}

.facade span::before { left: 50%; top: 0; bottom: 0; width: 2px; transform: translateX(-50%); }
.facade span::after  { top: 50%; left: 0; right: 0; height: 2px; transform: translateY(-50%); }

.facade span.fitted {
  opacity: 1;
  border-color: var(--blue);
  background: linear-gradient(135deg, rgba(57, 160, 255, 0.35), rgba(57, 160, 255, 0.08));
}

.hero-strip {
  list-style: none;
  margin: 80px 0 0;
  padding: 28px 0;
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 24px;
  border-top: 1px solid rgba(255, 255, 255, 0.1);
  color: rgba(255, 255, 255, 0.85);
  font-size: 0.95rem;
}

.strip-label {
  display: block;
  font-family: var(--font-head);
  font-size: 0.75rem;
  font-weight: 600;
  letter-spacing: 0.14em;
  text-transform: uppercase;
  color: var(--blue);
  margin-bottom: 4px;
}

/* ---------- Sections ---------- */
.section { padding: 96px 0; }

.section-alt { background: var(--bg-alt); }

.section-dark {
  background: var(--navy-800);
  color: #fff;
}

.section-dark .eyebrow { color: var(--blue); }
.section-dark .section-head p { color: rgba(255, 255, 255, 0.72); }

.section-head {
  max-width: 640px;
  margin-bottom: 48px;
}

.section-head p:not(.eyebrow) { color: var(--muted); font-size: 1.05rem; }

/* ---------- Service cards ---------- */
.card-grid {
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  gap: 20px;
}

.card {
  padding: 28px 24px;
  border: 1px solid var(--line);
  border-radius: var(--radius);
  background: #fff;
  transition: transform 0.25s, box-shadow 0.25s, border-color 0.25s;
}

.card:hover {
  transform: translateY(-4px);
  box-shadow: var(--shadow);
  border-color: transparent;
}

.card p { color: var(--muted); margin: 0; font-size: 0.95rem; }

.card-icon {
  display: grid;
  place-items: center;
  width: 48px;
  height: 48px;
  margin-bottom: 18px;
  border-radius: 8px;
  background: rgba(57, 160, 255, 0.12);
}

.card-icon svg {
  width: 26px;
  height: 26px;
  fill: none;
  stroke: var(--blue-dark);
  stroke-width: 1.8;
  stroke-linecap: round;
  stroke-linejoin: round;
}

/* ---------- Sectors ---------- */
.split {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 24px;
}

.split-panel {
  padding: 40px;
  border-radius: var(--radius);
  background: #fff;
  box-shadow: var(--shadow);
}

.split-panel p { color: var(--muted); }

.split-number {
  display: block;
  font-family: var(--font-head);
  font-size: 0.9rem;
  font-weight: 700;
  color: var(--blue-dark);
  margin-bottom: 12px;
}

.ticks {
  list-style: none;
  margin: 1.5rem 0 0;
  padding: 0;
}

.ticks li {
  position: relative;
  padding: 10px 0 10px 30px;
  border-top: 1px solid var(--line);
}

.ticks li::before {
  content: "";
  position: absolute;
  left: 4px;
  top: 17px;
  width: 12px;
  height: 6px;
  border-left: 2px solid var(--blue-dark);
  border-bottom: 2px solid var(--blue-dark);
  transform: rotate(-45deg);
}

/* ---------- Process ---------- */
.steps {
  list-style: none;
  margin: 0;
  padding: 0;
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  gap: 24px;
  counter-reset: step;
}

.step {
  position: relative;
  padding-top: 28px;
  border-top: 2px solid var(--line);
}

.step p { color: var(--muted); font-size: 0.95rem; }

.step-num {
  position: absolute;
  top: -18px;
  left: 0;
  display: grid;
  place-items: center;
  width: 34px;
  height: 34px;
  border-radius: 50%;
  background: var(--navy-800);
  color: #fff;
  font-family: var(--font-head);
  font-weight: 700;
  font-size: 0.95rem;
}

/* ---------- Locations ---------- */
.locations {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 20px;
}

.location {
  padding: 32px;
  border: 1px solid rgba(255, 255, 255, 0.1);
  border-radius: var(--radius);
  background: var(--navy-700);
  transition: border-color 0.25s, background 0.25s;
}

.location:hover {
  border-color: var(--blue);
  background: var(--navy-600);
}

.location p { color: rgba(255, 255, 255, 0.72); margin: 0; }

.location-code {
  display: inline-block;
  margin-bottom: 20px;
  padding: 4px 10px;
  border: 1px solid var(--blue);
  border-radius: 4px;
  font-family: var(--font-head);
  font-weight: 700;
  font-size: 0.85rem;
  letter-spacing: 0.1em;
  color: var(--blue);
}

/* ---------- Contact ---------- */
.contact-grid {
  display: grid;
  grid-template-columns: 0.9fr 1.1fr;
  gap: 64px;
  align-items: start;
}

.contact-info > p:not(.eyebrow) { color: var(--muted); font-size: 1.05rem; }

.contact-list {
  list-style: none;
  margin: 2rem 0 0;
  padding: 0;
}

.contact-list li {
  padding: 16px 0;
  border-top: 1px solid var(--line);
}

.contact-list li:last-child { border-bottom: 1px solid var(--line); }

.contact-label {
  display: block;
  font-size: 0.8rem;
  font-weight: 600;
  letter-spacing: 0.08em;
  text-transform: uppercase;
  color: var(--muted);
}

.contact-list a {
  font-family: var(--font-head);
  font-size: 1.15rem;
  font-weight: 600;
  text-decoration: none;
  word-break: break-word;
}

.contact-list a:hover { color: var(--blue-dark); }

.contact-form {
  padding: 36px;
  border: 1px solid var(--line);
  border-radius: var(--radius);
  background: var(--bg-alt);
}

.field-row {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 16px;
}

.field { margin-bottom: 18px; }

.field label {
  display: block;
  margin-bottom: 6px;
  font-size: 0.9rem;
  font-weight: 600;
}

.field input,
.field select,
.field textarea {
  width: 100%;
  padding: 0.75rem 0.9rem;
  border: 1px solid #c9d2dd;
  border-radius: 6px;
  background: #fff;
  color: var(--ink);
  font: inherit;
  transition: border-color 0.2s;
}

.field textarea { resize: vertical; min-height: 120px; }

.field input:focus,
.field select:focus,
.field textarea:focus { border-color: var(--blue-dark); }

.field.invalid input,
.field.invalid textarea { border-color: #d64545; }

.form-status {
  margin: 14px 0 0;
  min-height: 1.5em;
  font-size: 0.95rem;
}

.form-status.error { color: #c23030; }
.form-status.success { color: #1c7c4a; }

/* ---------- Footer ---------- */
.site-footer {
  background: var(--navy-900);
  color: rgba(255, 255, 255, 0.75);
  padding: 56px 0 28px;
  font-size: 0.95rem;
}

.footer-inner {
  display: flex;
  flex-wrap: wrap;
  justify-content: space-between;
  gap: 24px;
  padding-bottom: 32px;
  border-bottom: 1px solid rgba(255, 255, 255, 0.08);
}

.footer-note { margin: 12px 0 0; }

.footer-links {
  display: flex;
  flex-direction: column;
  gap: 8px;
  text-align: right;
}

.footer-links a {
  text-decoration: none;
  color: #fff;
}

.footer-links a:hover { color: var(--blue); }

.footer-bottom {
  display: flex;
  flex-wrap: wrap;
  justify-content: space-between;
  gap: 8px;
  padding-top: 24px;
  font-size: 0.85rem;
  color: rgba(255, 255, 255, 0.5);
}

.footer-bottom p { margin: 0; }

/* ---------- Scroll reveal ---------- */
.reveal {
  opacity: 0;
  transform: translateY(18px);
  transition: opacity 0.6s ease, transform 0.6s ease;
}

.reveal.visible {
  opacity: 1;
  transform: none;
}

.no-js .reveal { opacity: 1; transform: none; }

@media (prefers-reduced-motion: reduce) {
  html { scroll-behavior: auto; }
  .reveal { opacity: 1; transform: none; transition: none; }
  .facade span { transition: none; }
}

/* ---------- Responsive ---------- */
@media (max-width: 1000px) {
  .card-grid { grid-template-columns: repeat(2, 1fr); }
  .steps { grid-template-columns: repeat(2, 1fr); row-gap: 48px; }
}

@media (max-width: 860px) {
  .nav-toggle { display: block; }

  .site-nav {
    position: fixed;
    top: var(--header-h);
    left: 0;
    right: 0;
    flex-direction: column;
    align-items: stretch;
    gap: 0;
    padding: 12px 24px 24px;
    background: var(--navy-900);
    border-bottom: 1px solid rgba(255, 255, 255, 0.08);
    transform: translateY(-110%);
    visibility: hidden;
    transition: transform 0.3s ease, visibility 0.3s;
  }

  .site-nav.open {
    transform: none;
    visibility: visible;
  }

  .site-nav a:not(.btn) {
    padding: 14px 0;
    border-bottom: 1px solid rgba(255, 255, 255, 0.08);
  }

  .site-nav .btn { margin-top: 16px; }

  .hero { padding-top: 64px; }
  .hero-inner { grid-template-columns: 1fr; }
  .hero-visual { display: none; }
  .hero-strip { grid-template-columns: 1fr; gap: 16px; margin-top: 56px; }

  .split,
  .locations,
  .contact-grid { grid-template-columns: 1fr; }

  .contact-grid { gap: 40px; }
  .section { padding: 72px 0; }
}

@media (max-width: 560px) {
  .container { padding: 0 16px; }
  .card-grid,
  .steps,
  .field-row { grid-template-columns: 1fr; }
  .field-row { gap: 0; }
  .split-panel,
  .contact-form { padding: 24px; }
  .hero-actions .btn { width: 100%; }
  .footer-links { text-align: left; }
}