/* =====================================================
   AURUMWEB — Design System
   Clean · Professional · Orange Accent
===================================================== */

@import url('https://fonts.googleapis.com/css2?family=Inter:wght@300;400;500;600;700;800;900&family=JetBrains+Mono:wght@400;500&display=swap');

:root {
  --bg:           #F8F9FA;
  --white:        #FFFFFF;
  --border:       #E9ECEF;
  --orange:       #F97316;
  --orange-d:     #EA6C0A;
  --orange-light: #FFF7ED;
  --orange-bd:    #FED7AA;
  --text:         #1E293B;
  --muted:        #64748B;
  --light:        #F1F5F9;
  --r:            12px;
  --r-sm:         8px;
  --ease:         cubic-bezier(.4,0,.2,1);
  --mono:         'JetBrains Mono', ui-monospace, monospace;
}

/* ── Techy utilities ─────────────────── */
.dot-grid {
  background-image: radial-gradient(circle, rgba(30,41,59,.065) 1px, transparent 1px);
  background-size: 24px 24px;
}
.has-brackets { position: relative; }
.br {
  position: absolute; width: 14px; height: 14px;
  background: var(--bg); border: 1px solid var(--border);
  border-radius: 3px; z-index: 3; pointer-events: none;
}
.br.on-white { background: var(--white); }
.br.tl { top: -7px; left: -7px; }
.br.tr { top: -7px; right: -7px; }
.br.bl { bottom: -7px; left: -7px; }
.br.br-pos { bottom: -7px; right: -7px; }

*, *::before, *::after { box-sizing: border-box; margin: 0; padding: 0; }
html { scroll-behavior: smooth; font-size: 16px; }
body {
  font-family: 'Inter', system-ui, -apple-system, sans-serif;
  background: var(--bg);
  color: var(--text);
  line-height: 1.6;
  -webkit-font-smoothing: antialiased;
}
a { text-decoration: none; color: inherit; }
img { display: block; max-width: 100%; }
button { font-family: inherit; cursor: pointer; }

/* ── Layout ─────────────────────────── */
.container { width: min(1100px, 92%); margin-inline: auto; }

/* ── Buttons ─────────────────────────── */
.btn {
  display: inline-flex; align-items: center; gap: .45rem;
  padding: .72rem 1.5rem; border-radius: var(--r-sm);
  font-size: .9rem; font-weight: 600; line-height: 1;
  border: 1.5px solid transparent; cursor: pointer;
  transition: background .18s, border-color .18s, color .18s, transform .15s;
  white-space: nowrap;
}
.btn-primary { background: var(--orange); color: #fff; border-color: var(--orange); }
.btn-primary:hover { background: var(--orange-d); border-color: var(--orange-d); transform: translateY(-1px); }
.btn-outline { background: transparent; color: var(--text); border-color: var(--border); }
.btn-outline:hover { border-color: var(--muted); }
.btn-lg { padding: .88rem 1.85rem; font-size: .95rem; }

/* ── Navigation ─────────────────────── */
#navbar {
  position: sticky; top: 0; z-index: 900;
  background: var(--white);
  border-bottom: 1px solid var(--border);
}
.nav-inner {
  height: 64px; display: flex; align-items: center;
  justify-content: space-between; gap: 2rem;
}
.nav-logo { font-size: 1.2rem; font-weight: 800; letter-spacing: -.03em; color: var(--text); flex-shrink: 0; }
.nav-logo span { color: var(--orange); }
.nav-links { display: flex; align-items: center; gap: 2rem; list-style: none; }
.nav-links a { font-size: .875rem; font-weight: 500; color: var(--muted); transition: color .18s; }
.nav-links a:hover, .nav-links a.active { color: var(--text); }
.nav-actions { display: flex; align-items: center; }
.hamburger {
  display: none; flex-direction: column; gap: 4px;
  background: none; border: none; padding: 4px; cursor: pointer;
}
.hamburger span { display: block; width: 20px; height: 2px; background: var(--text); border-radius: 2px; transition: transform .2s, opacity .2s; }
.hamburger.open span:nth-child(1) { transform: translateY(6px) rotate(45deg); }
.hamburger.open span:nth-child(2) { opacity: 0; }
.hamburger.open span:nth-child(3) { transform: translateY(-6px) rotate(-45deg); }
.mobile-menu {
  display: none; position: fixed; top: 64px; left: 0; right: 0; bottom: 0; z-index: 800;
  background: var(--white); flex-direction: column; align-items: center; justify-content: center; gap: 2.5rem;
  border-top: 1px solid var(--border);
}
.mobile-menu.open { display: flex; }
.mobile-menu a { font-size: 1.5rem; font-weight: 700; color: var(--text); transition: color .18s; }
.mobile-menu a:hover { color: var(--orange); }
.mobile-menu .btn { font-size: 1rem; padding: .85rem 2rem; }

/* ── Section label ───────────────────── */
.sec-label {
  font-size: .68rem; font-weight: 700; letter-spacing: .14em; text-transform: uppercase;
  color: var(--orange); display: block; margin-bottom: .75rem;
}

/* ── Footer ──────────────────────────── */
footer {
  background: var(--text);
  padding: 3.5rem 0 2rem;
}
.footer-inner {
  display: grid; grid-template-columns: 1.6fr 1fr 1fr;
  gap: 3rem; padding-bottom: 2.5rem;
  border-bottom: 1px solid rgba(255,255,255,.08);
  margin-bottom: 1.75rem;
}
.footer-logo { font-size: 1.1rem; font-weight: 800; color: #fff; letter-spacing: -.02em; margin-bottom: .5rem; }
.footer-logo span { color: var(--orange); }
.footer-tagline { font-size: .82rem; color: rgba(255,255,255,.4); line-height: 1.7; max-width: 210px; }
.footer-col h4 {
  font-size: .65rem; font-weight: 700; letter-spacing: .12em; text-transform: uppercase;
  color: rgba(255,255,255,.35); margin-bottom: .9rem;
}
.footer-col ul { list-style: none; display: flex; flex-direction: column; gap: .5rem; }
.footer-col ul a { font-size: .82rem; color: rgba(255,255,255,.42); transition: color .18s; }
.footer-col ul a:hover { color: #fff; }
.footer-bottom { display: flex; align-items: center; justify-content: space-between; gap: 1rem; flex-wrap: wrap; }
.footer-copy { font-size: .75rem; color: rgba(255,255,255,.3); }

/* ── Reveal ──────────────────────────── */
.reveal { opacity: 0; transform: translateY(18px); transition: opacity .55s var(--ease), transform .55s var(--ease); }
.reveal.visible { opacity: 1; transform: none; }
.d1 { transition-delay: .07s; }
.d2 { transition-delay: .14s; }
.d3 { transition-delay: .21s; }

/* ── Responsive ──────────────────────── */
@media (max-width: 768px) {
  .nav-links, .nav-actions { display: none; }
  .hamburger { display: flex; }
  .footer-inner { grid-template-columns: 1fr 1fr; }
}
@media (max-width: 480px) {
  .footer-inner { grid-template-columns: 1fr; }
}

/* ── Scrollbar ───────────────────────── */
::-webkit-scrollbar { width: 5px; }
::-webkit-scrollbar-track { background: var(--bg); }
::-webkit-scrollbar-thumb { background: var(--border); border-radius: 3px; }
::-webkit-scrollbar-thumb:hover { background: var(--muted); }

/* ── Selection ───────────────────────── */
::selection { background: rgba(249,115,22,.18); color: var(--text); }
:focus-visible { outline: 2px solid var(--orange); outline-offset: 3px; }