/* ============================================================
   Coldstart Systems — coldstart.systems
   Aesthetic: engineered / cold-to-warm. Cool slate base with a
   single warm "ignition" accent. Refined, technical, confident.
   ============================================================ */

:root {
  --bg:          #0a0d12;
  --bg-2:        #0d1119;
  --surface:     #121823;
  --surface-2:   #161d29;
  --border:      #222b3a;
  --border-lit:  #2e3a4d;

  --text:        #e9edf3;
  --text-dim:    #9aa6b6;
  --text-faint:  #586375;

  --cold:        #5ea2ff;
  --cold-deep:   #2d6fd6;
  --warm:        #ff7a33;
  --warm-soft:   #ffa066;
  --warm-glow:   rgba(255, 122, 51, .45);

  --font-display: 'Schibsted Grotesk', system-ui, sans-serif;
  --font-body:    'Hanken Grotesk', system-ui, sans-serif;
  --font-mono:    'JetBrains Mono', ui-monospace, monospace;

  --maxw: 1080px;
  --pad:  clamp(1.4rem, 5vw, 4rem);
}

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

html { scroll-behavior: smooth; }

body {
  background: var(--bg);
  color: var(--text);
  font-family: var(--font-body);
  font-size: 17px;
  line-height: 1.6;
  -webkit-font-smoothing: antialiased;
  text-rendering: optimizeLegibility;
  position: relative;
  overflow-x: hidden;

  /* atmosphere: cold glow top-left, faint warm ember bottom-right, fine grid */
  background-image:
    radial-gradient(60rem 40rem at 12% -10%, rgba(45, 111, 214, .18), transparent 60%),
    radial-gradient(50rem 40rem at 100% 108%, rgba(255, 122, 51, .10), transparent 55%),
    linear-gradient(var(--bg-2) 1px, transparent 1px),
    linear-gradient(90deg, var(--bg-2) 1px, transparent 1px);
  background-size: auto, auto, 64px 64px, 64px 64px;
  background-attachment: fixed, fixed, scroll, scroll;
}

/* subtle film grain */
.grain {
  position: fixed;
  inset: 0;
  pointer-events: none;
  z-index: 1;
  opacity: .035;
  background-image: url("data:image/svg+xml,%3Csvg xmlns='http://www.w3.org/2000/svg' width='160' height='160'%3E%3Cfilter id='n'%3E%3CfeTurbulence type='fractalNoise' baseFrequency='.85' numOctaves='3'/%3E%3C/filter%3E%3Crect width='100%25' height='100%25' filter='url(%23n)'/%3E%3C/svg%3E");
}

/* ---------- shared layout ---------- */
.site-head, main > section, .site-foot {
  max-width: var(--maxw);
  margin-inline: auto;
  padding-inline: var(--pad);
  position: relative;
  z-index: 2;
}

/* ---------- eyebrow / mono labels ---------- */
.eyebrow {
  font-family: var(--font-mono);
  font-size: .8rem;
  letter-spacing: .04em;
  color: var(--text-dim);
  display: inline-flex;
  align-items: center;
  gap: .6em;
}
.section-label { color: var(--cold); margin-bottom: 1.6rem; }

.dot {
  width: .5rem; height: .5rem;
  border-radius: 50%;
  background: var(--warm);
  box-shadow: 0 0 0 0 var(--warm-glow);
  animation: pulse 2.4s ease-out infinite;
}
@keyframes pulse {
  0%   { box-shadow: 0 0 0 0 var(--warm-glow); }
  70%  { box-shadow: 0 0 0 .55rem rgba(255,122,51,0); }
  100% { box-shadow: 0 0 0 0 rgba(255,122,51,0); }
}

/* ---------- header ---------- */
.site-head {
  display: flex;
  align-items: center;
  justify-content: space-between;
  padding-top: 1.7rem;
  padding-bottom: 1.7rem;
}
.brand {
  display: inline-flex;
  align-items: center;
  gap: .7rem;
  text-decoration: none;
  color: var(--text);
  font-family: var(--font-display);
  font-weight: 800;
  letter-spacing: -.01em;
}
.brand-mark {
  width: 1.05rem; height: 1.05rem;
  border-radius: 3px;
  background: linear-gradient(135deg, var(--cold), var(--cold-deep));
  box-shadow: 0 0 14px rgba(94,162,255,.5), inset 0 0 6px rgba(255,255,255,.25);
}
.brand-dim { color: var(--text-dim); font-weight: 500; }
.head-mail {
  font-family: var(--font-mono);
  font-size: .85rem;
  color: var(--text-dim);
  text-decoration: none;
  transition: color .2s ease;
}
.head-mail:hover { color: var(--warm); }

/* ---------- hero ---------- */
.hero { padding-top: clamp(4rem, 12vh, 9rem); padding-bottom: clamp(4rem, 10vh, 7rem); }
.hero .eyebrow { margin-bottom: 1.8rem; }

h1 {
  font-family: var(--font-display);
  font-weight: 900;
  font-size: clamp(2.5rem, 7vw, 5.3rem);
  line-height: 1.02;
  letter-spacing: -.025em;
  max-width: 16ch;
  margin-bottom: 1.8rem;
}
.ignite {
  color: var(--warm);
  text-shadow: 0 0 34px var(--warm-glow);
  animation: ignite 1.5s ease-out both;
  animation-delay: .5s;
}
@keyframes ignite {
  0%, 18% { opacity: 0; color: var(--text); text-shadow: none; }
  22% { opacity: 1; }
  28% { opacity: .25; }
  34% { opacity: 1; color: var(--warm-soft); }
  44% { opacity: .55; }
  52% { opacity: 1; }
  100% { opacity: 1; color: var(--warm); text-shadow: 0 0 34px var(--warm-glow); }
}

.lede {
  font-size: clamp(1.05rem, 2vw, 1.3rem);
  color: var(--text-dim);
  max-width: 46ch;
  margin-bottom: 2.6rem;
}

.cta-row { display: flex; flex-wrap: wrap; gap: 1rem; align-items: center; }
.btn {
  display: inline-block;
  background: var(--warm);
  color: #1a0e06;
  font-weight: 600;
  font-size: 1rem;
  text-decoration: none;
  padding: .85rem 1.6rem;
  border-radius: 7px;
  box-shadow: 0 0 0 0 var(--warm-glow);
  transition: transform .18s ease, box-shadow .25s ease, background .2s ease;
}
.btn:hover {
  background: var(--warm-soft);
  transform: translateY(-2px);
  box-shadow: 0 10px 34px var(--warm-glow);
}
.btn-ghost {
  font-family: var(--font-mono);
  font-size: .9rem;
  color: var(--text-dim);
  text-decoration: none;
  border-bottom: 1px solid var(--border-lit);
  padding-bottom: 2px;
  transition: color .2s ease, border-color .2s ease;
}
.btn-ghost:hover { color: var(--cold); border-color: var(--cold); }

/* ---------- services ---------- */
.services { padding-block: clamp(3rem, 8vh, 6rem); }
.grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 1.1rem;
}
.card {
  background: linear-gradient(180deg, var(--surface), var(--bg-2));
  border: 1px solid var(--border);
  border-radius: 12px;
  padding: 2rem 1.7rem 2.1rem;
  position: relative;
  overflow: hidden;
  transition: transform .22s ease, border-color .25s ease, box-shadow .25s ease;
}
.card::before {
  content: "";
  position: absolute;
  top: 0; left: 0; right: 0;
  height: 2px;
  background: linear-gradient(90deg, var(--cold), transparent);
  opacity: .5;
  transition: background .3s ease, opacity .3s ease;
}
.card:hover {
  transform: translateY(-4px);
  border-color: var(--border-lit);
  box-shadow: 0 16px 40px rgba(0,0,0,.4);
}
.card:hover::before { background: linear-gradient(90deg, var(--warm), transparent); opacity: 1; }
.num {
  font-family: var(--font-mono);
  font-size: .82rem;
  color: var(--text-faint);
  display: block;
  margin-bottom: 1.4rem;
}
.card:hover .num { color: var(--warm); }
.card h3 {
  font-family: var(--font-display);
  font-weight: 700;
  font-size: 1.35rem;
  letter-spacing: -.01em;
  margin-bottom: .7rem;
}
.card p { color: var(--text-dim); font-size: .97rem; }

/* ---------- why ---------- */
.why {
  padding-block: clamp(3.5rem, 9vh, 7rem);
  border-top: 1px solid var(--border);
  margin-top: 2rem;
}
.statement {
  font-family: var(--font-display);
  font-weight: 500;
  font-size: clamp(1.4rem, 3.4vw, 2.4rem);
  line-height: 1.3;
  letter-spacing: -.015em;
  max-width: 24ch;
  margin-bottom: 1.6rem;
}
.hl { color: var(--cold); }
.statement-sub { color: var(--text-dim); max-width: 48ch; font-size: 1.08rem; }

/* ---------- contact ---------- */
.contact {
  padding-block: clamp(4rem, 11vh, 8rem);
  border-top: 1px solid var(--border);
}
.contact h2 {
  font-family: var(--font-display);
  font-weight: 800;
  font-size: clamp(1.9rem, 5vw, 3.4rem);
  line-height: 1.08;
  letter-spacing: -.02em;
  max-width: 18ch;
  margin-bottom: 2rem;
}
.mail-link {
  display: inline-flex;
  align-items: center;
  gap: .6rem;
  font-family: var(--font-mono);
  font-size: clamp(1.05rem, 2.4vw, 1.5rem);
  color: var(--text);
  text-decoration: none;
  padding-bottom: .35rem;
  border-bottom: 1px solid var(--border-lit);
  transition: color .2s ease, border-color .2s ease, gap .2s ease;
}
.mail-link:hover { color: var(--warm); border-color: var(--warm); gap: 1rem; }
.mail-link .arrow { transition: transform .2s ease; }
.mail-link:hover .arrow { transform: translateX(3px); }

/* ---------- footer ---------- */
.site-foot {
  display: flex;
  justify-content: space-between;
  align-items: center;
  padding-block: 2.2rem;
  border-top: 1px solid var(--border);
  font-family: var(--font-mono);
  font-size: .8rem;
  color: var(--text-faint);
}

/* ---------- entrance animation ---------- */
.reveal { opacity: 0; transform: translateY(18px); animation: rise .7s cubic-bezier(.2,.7,.2,1) forwards; animation-delay: var(--d, 0s); }
@keyframes rise { to { opacity: 1; transform: none; } }

/* ---------- responsive ---------- */
@media (max-width: 760px) {
  .grid { grid-template-columns: 1fr; }
  .head-mail { display: none; }
}

/* ---------- reduced motion ---------- */
@media (prefers-reduced-motion: reduce) {
  *, *::before, *::after { animation: none !important; transition: none !important; }
  .reveal { opacity: 1; transform: none; }
  .ignite { color: var(--warm); text-shadow: 0 0 34px var(--warm-glow); }
}