/* AI-X Epiphany — dark cosmic theme drawn from the hero artwork */
:root {
  --bg: #081222;
  --bg-2: #0c1a2e;
  --bg-3: #10233c;
  --ink: #eef4fb;
  --muted: #a9bcd4;
  --cyan: #5fd8ef;
  --cyan-dim: #2fa8c4;
  --line: rgba(95, 216, 239, 0.16);
  --card: rgba(16, 35, 60, 0.72);
  --radius: 14px;
  --font: "Inter", "Segoe UI", system-ui, -apple-system, sans-serif;
  --serif: Georgia, "Times New Roman", serif;
}

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

html { scroll-behavior: smooth; }

body {
  font-family: var(--font);
  background: var(--bg);
  color: var(--ink);
  line-height: 1.65;
  -webkit-font-smoothing: antialiased;
}

a { color: var(--cyan); text-decoration: none; }
a:hover { text-decoration: underline; }

img { max-width: 100%; display: block; }

.wrap { width: min(1120px, 92%); margin: 0 auto; }

/* ---------- nav ---------- */
.nav {
  position: fixed; inset: 0 0 auto 0; z-index: 50;
  backdrop-filter: blur(14px);
  background: rgba(8, 18, 34, 0.72);
  border-bottom: 1px solid var(--line);
}
.nav .wrap { display: flex; align-items: center; justify-content: space-between; height: 64px; }
.brand { font-family: var(--serif); font-size: 1.35rem; letter-spacing: 0.04em; color: var(--ink); }
.brand span { color: var(--cyan); }
.nav-links { display: flex; gap: 1.75rem; list-style: none; }
.nav-links a { color: var(--muted); font-size: 0.95rem; }
.nav-links a:hover, .nav-links a.active { color: var(--cyan); text-decoration: none; }
.nav-toggle { display: none; background: none; border: 1px solid var(--line); color: var(--ink);
  border-radius: 8px; padding: 0.4rem 0.7rem; font-size: 1.1rem; cursor: pointer; }

/* ---------- hero ---------- */
.hero {
  min-height: 100svh;
  display: flex; align-items: center;
  background:
    linear-gradient(180deg, rgba(8,18,34,0.55) 0%, rgba(8,18,34,0.35) 45%, rgba(8,18,34,0.92) 100%),
    url("../assets/hero-bg.jpg") center 30% / cover no-repeat,
    var(--bg-2);
  padding: 120px 0 80px;
}
.hero h1 {
  font-family: var(--serif);
  font-size: clamp(2.6rem, 6vw, 4.4rem);
  letter-spacing: 0.03em; line-height: 1.15;
  text-shadow: 0 2px 30px rgba(0,0,0,0.6);
}
.hero h1 .x { color: var(--cyan); }
.hero .tagline {
  font-size: clamp(1.05rem, 2.2vw, 1.35rem);
  color: var(--muted); max-width: 620px; margin: 1.1rem 0 2rem;
  text-shadow: 0 1px 12px rgba(0,0,0,0.7);
}
.btn {
  display: inline-block; padding: 0.8rem 1.6rem; border-radius: 999px;
  font-weight: 600; font-size: 0.98rem; border: 1px solid transparent; cursor: pointer;
}
.btn-primary { background: var(--cyan); color: #06222b; }
.btn-primary:hover { background: #8ce6f7; text-decoration: none; }
.btn-ghost { border-color: var(--cyan-dim); color: var(--cyan); background: rgba(8,18,34,0.4); }
.btn-ghost:hover { background: rgba(95,216,239,0.12); text-decoration: none; }
.hero-cta { display: flex; gap: 0.9rem; flex-wrap: wrap; }

/* ---------- sections ---------- */
section { padding: 84px 0; }
.kicker { color: var(--cyan); text-transform: uppercase; letter-spacing: 0.22em;
  font-size: 0.78rem; font-weight: 700; margin-bottom: 0.7rem; }
h2 { font-size: clamp(1.7rem, 3.4vw, 2.4rem); line-height: 1.25; margin-bottom: 0.9rem; }
.lede { color: var(--muted); max-width: 680px; font-size: 1.05rem; }

.grid { display: grid; gap: 1.25rem; margin-top: 2.5rem; }
.grid-3 { grid-template-columns: repeat(3, 1fr); }
.grid-2 { grid-template-columns: repeat(2, 1fr); }

.card {
  background: var(--card); border: 1px solid var(--line); border-radius: var(--radius);
  padding: 1.7rem; backdrop-filter: blur(6px);
  transition: transform 0.25s ease, border-color 0.25s ease;
}
.card:hover { transform: translateY(-4px); border-color: rgba(95,216,239,0.45); }
.card .icon { font-size: 1.7rem; margin-bottom: 0.7rem; }
.card h3 { font-size: 1.15rem; margin-bottom: 0.5rem; }
.card p { color: var(--muted); font-size: 0.96rem; }

.steps { counter-reset: step; }
.step { position: relative; padding-left: 3.4rem; }
.step::before {
  counter-increment: step; content: counter(step);
  position: absolute; left: 0; top: 0;
  width: 2.3rem; height: 2.3rem; border-radius: 50%;
  border: 1px solid var(--cyan-dim); color: var(--cyan);
  display: flex; align-items: center; justify-content: center; font-weight: 700;
}

.cta-band {
  background: linear-gradient(135deg, var(--bg-3), #0a1c33);
  border: 1px solid var(--line); border-radius: 20px;
  padding: 3rem; text-align: center; margin-top: 1rem;
}
.cta-band p { color: var(--muted); margin: 0.8rem 0 1.6rem; }

/* ---------- pages ---------- */
.page-head { padding: 150px 0 60px; background: linear-gradient(180deg, var(--bg-2), var(--bg)); }
.service-detail { border-bottom: 1px solid var(--line); padding: 2.2rem 0; }
.service-detail:last-child { border-bottom: none; }
.service-detail h3 { font-size: 1.35rem; margin-bottom: 0.6rem; }
.service-detail h3 .n { color: var(--cyan); font-family: var(--serif); margin-right: 0.6rem; }
.service-detail p, .service-detail ul { color: var(--muted); }
.service-detail ul { margin: 0.8rem 0 0 1.2rem; }
.service-detail li { margin-bottom: 0.35rem; }

.form { display: grid; gap: 1rem; max-width: 620px; margin-top: 2rem; }
.form label { font-size: 0.9rem; color: var(--muted); display: grid; gap: 0.4rem; }
.form input, .form textarea, .form select {
  background: var(--bg-3); border: 1px solid var(--line); border-radius: 10px;
  color: var(--ink); padding: 0.8rem 1rem; font: inherit; width: 100%;
}
.form input:focus, .form textarea:focus, .form select:focus {
  outline: none; border-color: var(--cyan-dim);
}
.contact-meta { display: grid; gap: 1rem; margin-top: 2.5rem; }
.contact-meta div { background: var(--card); border: 1px solid var(--line);
  border-radius: var(--radius); padding: 1.2rem 1.4rem; }
.contact-meta strong { display: block; color: var(--cyan); font-size: 0.85rem;
  text-transform: uppercase; letter-spacing: 0.14em; margin-bottom: 0.3rem; }

/* ---------- footer ---------- */
footer { border-top: 1px solid var(--line); padding: 2.5rem 0; color: var(--muted); font-size: 0.9rem; }
footer .wrap { display: flex; justify-content: space-between; gap: 1rem; flex-wrap: wrap; }
footer .brand { font-size: 1.1rem; }

/* ---------- reveal ---------- */
.reveal { opacity: 0; transform: translateY(18px); transition: opacity 0.6s ease, transform 0.6s ease; }
.reveal.visible { opacity: 1; transform: none; }

/* ---------- responsive ---------- */
@media (max-width: 860px) {
  .grid-3, .grid-2 { grid-template-columns: 1fr; }
  .nav-links {
    display: none; position: absolute; top: 64px; left: 0; right: 0;
    background: rgba(8,18,34,0.97); flex-direction: column; padding: 1rem 4%;
    border-bottom: 1px solid var(--line);
  }
  .nav-links.open { display: flex; }
  .nav-toggle { display: block; }
  .hero { background-position: 62% 30%; }
  section { padding: 60px 0; }
}