/* ═══════════════════════════════════════════════════════
   CASTELLANI · DESIGN SYSTEM
   Executive · Structured · Light · Indigo
   Fonts: Inter (display + body) + DM Mono (labels)
═══════════════════════════════════════════════════════ */

@import url('https://fonts.googleapis.com/css2?family=Inter:ital,opsz,wght@0,14..32,300;0,14..32,400;0,14..32,500;0,14..32,600;0,14..32,700;0,14..32,800;0,14..32,900;1,14..32,400;1,14..32,600;1,14..32,700;1,14..32,800&family=DM+Mono:wght@300;400&display=swap');

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

:root {
  /* ── Brand Palette ── */
  --slate-dark:  #0F172A;
  --indigo:      #6366F1;
  --indigo-soft: #818CF8;
  --amber:       #F59E0B;
  --off-white:   #F8FAFC;
  --slate:       #1E293B;
  --white:       #FFFFFF;

  /* ── Semantic tokens ── */
  --heading:    var(--slate-dark);
  --ink:        var(--slate-dark);
  --body:       var(--slate);
  --mid:        rgba(30,41,59,0.65);
  --muted:      rgba(30,41,59,0.45);
  --paper:      var(--off-white);
  --paper2:     #F1F5F9;
  --rule:       rgba(30,41,59,0.1);
  --rule2:      rgba(30,41,59,0.15);
  --accent:     var(--indigo);
  --accent2:    var(--indigo-soft);
  --accent-bg:  rgba(99,102,241,0.08);
  --accent-bg2: rgba(99,102,241,0.14);

  /* ── Typography ── */
  --font-display: 'Inter', -apple-system, BlinkMacSystemFont, sans-serif;
  --font-body:    'Inter', -apple-system, BlinkMacSystemFont, sans-serif;
  --font-mono:    'DM Mono', monospace;

  /* ── Spacing ── */
  --nav-h: 68px;
  --max-w: 1160px;
  --gutter: 48px;
}

html { scroll-behavior: smooth; }

body {
  background: var(--white);
  color: var(--body);
  font-family: var(--font-body);
  font-weight: 400;
  font-size: 16px;
  line-height: 1.7;
  letter-spacing: -0.01em;
  -webkit-font-smoothing: antialiased;
}

img { display: block; max-width: 100%; }
a { color: inherit; text-decoration: none; }

/* ── SCROLLBAR ── */
::-webkit-scrollbar { width: 4px; }
::-webkit-scrollbar-track { background: var(--paper); }
::-webkit-scrollbar-thumb { background: var(--rule2); }

/* ══════════════════════════════
   NAV
══════════════════════════════ */
.site-nav {
  position: fixed;
  top: 0; left: 0; right: 0;
  z-index: 200;
  height: var(--nav-h);
  background: rgba(255,255,255,0.92);
  backdrop-filter: blur(14px);
  border-bottom: 1px solid var(--rule);
  display: flex;
  align-items: center;
  padding: 0 var(--gutter);
}

.nav-inner {
  width: 100%;
  max-width: var(--max-w);
  margin: 0 auto;
  display: flex;
  align-items: center;
  justify-content: space-between;
}

.nav-logo {
  font-family: var(--font-display);
  font-size: 1.05rem;
  font-weight: 700;
  color: var(--heading);
  letter-spacing: -0.01em;
}

.nav-logo span { color: var(--accent); }

.nav-links {
  display: flex;
  gap: 32px;
  list-style: none;
  align-items: center;
}

.nav-links a {
  font-family: var(--font-mono);
  font-size: 0.75rem;
  letter-spacing: 0.12em;
  text-transform: uppercase;
  color: var(--mid);
  transition: color 0.2s;
  position: relative;
}

.nav-links a::after {
  content: '';
  position: absolute;
  bottom: -3px; left: 0; right: 0;
  height: 1px;
  background: var(--accent);
  transform: scaleX(0);
  transform-origin: left;
  transition: transform 0.25s;
}

.nav-links a:hover,
.nav-links a.active { color: var(--heading); }
.nav-links a:hover::after,
.nav-links a.active::after { transform: scaleX(1); }

.nav-cta {
  padding: 9px 22px;
  background: var(--accent);
  color: var(--white) !important;
  font-family: var(--font-mono);
  font-size: 0.75rem;
  letter-spacing: 0.12em;
  text-transform: uppercase;
  transition: background 0.2s !important;
}

.nav-cta:hover { background: var(--heading) !important; color: var(--white) !important; }
.nav-cta::after { display: none !important; }

.nav-hamburger {
  display: none;
  flex-direction: column;
  gap: 5px;
  cursor: pointer;
  padding: 4px;
}

.nav-hamburger span {
  width: 22px; height: 1.5px;
  background: var(--heading);
  transition: all 0.2s;
}

/* ══════════════════════════════
   PAGE WRAPPER
══════════════════════════════ */
.page-body { padding-top: var(--nav-h); }

/* ══════════════════════════════
   UTILITIES
══════════════════════════════ */
.container {
  max-width: var(--max-w);
  margin: 0 auto;
  padding: 0 var(--gutter);
}

.label {
  font-family: var(--font-mono);
  font-size: 0.72rem;
  letter-spacing: 0.16em;
  text-transform: uppercase;
  color: var(--accent);
}

.label--muted { color: var(--muted); }

.rule { width: 100%; height: 1px; background: var(--rule); }

.tag {
  display: inline-block;
  font-family: var(--font-mono);
  font-size: 0.72rem;
  letter-spacing: 0.12em;
  text-transform: uppercase;
  color: var(--accent);
  background: var(--accent-bg);
  border: 1px solid rgba(99,102,241,0.2);
  padding: 5px 12px;
}

/* ── SECTION HEADER ── */
.sec-head {
  display: flex;
  align-items: baseline;
  gap: 16px;
  margin-bottom: 56px;
  padding-bottom: 24px;
  border-bottom: 1px solid var(--rule);
}

.sec-head__num {
  font-family: var(--font-mono);
  font-size: 0.72rem;
  color: var(--accent);
  letter-spacing: 0.14em;
  flex-shrink: 0;
}

.sec-head__title {
  font-family: var(--font-display);
  font-size: clamp(1.8rem, 3vw, 2.8rem);
  font-weight: 800;
  color: var(--heading);
  line-height: 1.05;
  letter-spacing: -0.03em;
}

.sec-head__title em { font-style: italic; color: var(--accent); }

/* ── BUTTONS ── */
.btn {
  display: inline-flex;
  align-items: center;
  gap: 10px;
  font-family: var(--font-mono);
  font-size: 0.75rem;
  letter-spacing: 0.12em;
  text-transform: uppercase;
  cursor: pointer;
  transition: all 0.22s;
  text-decoration: none;
}

.btn--primary {
  padding: 13px 28px;
  background: var(--accent);
  color: var(--white);
  border: 1px solid var(--accent);
}

.btn--primary:hover { background: var(--heading); border-color: var(--heading); }

.btn--outline {
  padding: 13px 28px;
  border: 1px solid var(--rule2);
  color: var(--body);
}

.btn--outline:hover { border-color: var(--accent); color: var(--accent); }

.btn--ghost {
  color: var(--accent);
  padding: 0;
  gap: 6px;
}

.btn--ghost:hover { gap: 12px; }

.btn__arrow { font-size: 1rem; }

/* ── STAT ── */
.stat-num {
  font-family: var(--font-display);
  font-size: 3rem;
  font-weight: 800;
  color: var(--heading);
  line-height: 1;
  letter-spacing: -0.03em;
}

.stat-num span { color: var(--accent); }

.stat-lbl {
  font-family: var(--font-mono);
  font-size: 0.72rem;
  letter-spacing: 0.12em;
  text-transform: uppercase;
  color: var(--muted);
  margin-top: 6px;
}

/* ══════════════════════════════
   FOOTER
══════════════════════════════ */
.site-footer {
  background: var(--ink);
  color: rgba(255,255,255,0.5);
  padding: 56px var(--gutter) 40px;
}

.footer-inner {
  max-width: var(--max-w);
  margin: 0 auto;
}

.footer-top {
  display: grid;
  grid-template-columns: 1fr auto auto;
  gap: 80px;
  align-items: start;
  padding-bottom: 40px;
  border-bottom: 1px solid rgba(255,255,255,0.08);
  margin-bottom: 32px;
}

.footer-brand {
  font-family: var(--font-display);
  font-size: 1.2rem;
  font-weight: 700;
  color: rgba(255,255,255,0.85);
  letter-spacing: -0.02em;
  margin-bottom: 10px;
}

.footer-tagline {
  font-size: 0.82rem;
  line-height: 1.6;
  max-width: 280px;
}

.footer-nav-title {
  font-family: var(--font-mono);
  font-size: 0.72rem;
  letter-spacing: 0.14em;
  text-transform: uppercase;
  color: rgba(255,255,255,0.55);
  margin-bottom: 16px;
}

.footer-nav-links {
  list-style: none;
  display: flex;
  flex-direction: column;
  gap: 10px;
}

.footer-nav-links a {
  font-size: 0.84rem;
  color: rgba(255,255,255,0.5);
  transition: color 0.2s;
}

.footer-nav-links a:hover { color: rgba(255,255,255,0.9); }

.footer-bottom {
  display: flex;
  justify-content: space-between;
  align-items: center;
  font-family: var(--font-mono);
  font-size: 0.72rem;
  letter-spacing: 0.08em;
  color: rgba(255,255,255,0.5);
}

/* ══════════════════════════════
   ANIMATIONS
══════════════════════════════ */
@keyframes fadeUp {
  from { opacity: 0; transform: translateY(24px); }
  to   { opacity: 1; transform: translateY(0); }
}

@keyframes fadeIn {
  from { opacity: 0; }
  to   { opacity: 1; }
}

.anim-fadeup { opacity: 0; animation: fadeUp 0.7s forwards; }
.anim-delay-1 { animation-delay: 0.1s; }
.anim-delay-2 { animation-delay: 0.25s; }
.anim-delay-3 { animation-delay: 0.4s; }
.anim-delay-4 { animation-delay: 0.55s; }
.anim-delay-5 { animation-delay: 0.7s; }

.reveal {
  opacity: 0;
  transform: translateY(20px);
  transition: opacity 0.6s, transform 0.6s;
}

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

/* ══════════════════════════════
   RESPONSIVE
══════════════════════════════ */
@media (max-width: 860px) {
  :root { --gutter: 24px; }

  .nav-links { display: none; }
  .nav-links.open {
    display: flex;
    flex-direction: column;
    position: absolute;
    top: var(--nav-h); left: 0; right: 0;
    background: var(--white);
    border-bottom: 1px solid var(--rule);
    padding: 24px var(--gutter);
    gap: 20px;
  }
  .nav-hamburger { display: flex; }

  .footer-top { grid-template-columns: 1fr; gap: 36px; }
  .footer-bottom { flex-direction: column; gap: 8px; text-align: center; }
}