/* Northmind LLC — main stylesheet */

*, *::before, *::after { box-sizing: border-box; }
html { -webkit-text-size-adjust: 100%; scroll-behavior: smooth; }
body {
  margin: 0;
  font-family: 'Inter', -apple-system, BlinkMacSystemFont, 'Segoe UI', Roboto, sans-serif;
  font-size: 16px;
  line-height: 1.6;
  color: var(--ink);
  background: var(--paper);
  -webkit-font-smoothing: antialiased;
  -moz-osx-font-smoothing: grayscale;
}
img, svg { max-width: 100%; display: block; }

:root {
  --ink:        #0A0A0A;
  --ink-soft:   #27272A;
  --muted:      #71717A;
  --line:       #E7E5E4;
  --line-soft:  #F4F4F5;
  --paper:      #FFFFFF;
  --paper-alt:  #FAFAF9;
  --paper-warm: #F5F4F1;
  --accent:     #4F46E5;
  --accent-2:   #7C3AED;
  --accent-ink: #FFFFFF;
  --radius:     14px;
  --radius-sm:  8px;
  --shadow-sm:  0 1px 2px rgba(10,10,10,.04), 0 1px 3px rgba(10,10,10,.06);
  --shadow-md:  0 4px 20px -6px rgba(10,10,10,.10);
  --max:        1180px;
}

/* Layout */
.container { max-width: var(--max); margin: 0 auto; padding: 0 24px; }
section { padding: 96px 0; }
@media (max-width: 720px) { section { padding: 64px 0; } }

/* Typography */
h1, h2, h3, h4 { font-family: 'Inter', sans-serif; font-weight: 600; letter-spacing: -0.02em; color: var(--ink); margin: 0 0 .5em; line-height: 1.15; }
h1 { font-size: clamp(2.4rem, 5.5vw, 4.2rem); letter-spacing: -0.03em; }
h2 { font-size: clamp(1.9rem, 3.6vw, 2.75rem); letter-spacing: -0.025em; }
h3 { font-size: 1.25rem; }
p  { margin: 0 0 1em; color: var(--ink-soft); }
a  { color: var(--ink); text-decoration: none; transition: color .18s ease; }
a:hover { color: var(--accent); }
.muted { color: var(--muted); }
.eyebrow {
  display: inline-flex; align-items: center; gap: 8px;
  font-size: .78rem; font-weight: 500; letter-spacing: .12em;
  text-transform: uppercase; color: var(--muted); margin-bottom: 18px;
}
.eyebrow::before {
  content: ''; width: 22px; height: 1px; background: var(--muted);
}
.display-serif { font-family: 'Instrument Serif', Georgia, serif; font-style: italic; font-weight: 400; letter-spacing: -0.01em; }

/* Buttons */
.btn {
  display: inline-flex; align-items: center; justify-content: center;
  padding: 14px 22px; border-radius: 999px; font-weight: 500; font-size: .95rem;
  border: 1px solid transparent; cursor: pointer; transition: all .2s ease;
  text-decoration: none; white-space: nowrap;
}
.btn-sm { padding: 10px 18px; font-size: .88rem; }
.btn-primary { background: var(--ink); color: #fff; border-color: var(--ink); }
.btn-primary:hover { background: var(--accent); border-color: var(--accent); color: #fff; transform: translateY(-1px); }
.btn-ghost { background: transparent; color: var(--ink); border-color: var(--line); }
.btn-ghost:hover { background: var(--paper-alt); border-color: var(--ink); color: var(--ink); }

/* Header */
.site-header {
  position: sticky; top: 0; z-index: 40;
  background: rgba(255,255,255,.82);
  backdrop-filter: saturate(180%) blur(14px);
  -webkit-backdrop-filter: saturate(180%) blur(14px);
  border-bottom: 1px solid var(--line-soft);
}
.header-inner { display: flex; align-items: center; justify-content: space-between; height: 72px; gap: 24px; }
.brand { display: inline-flex; align-items: center; gap: 10px; font-weight: 600; font-size: 1.05rem; letter-spacing: -0.01em; color: var(--ink); }
.brand:hover { color: var(--ink); }
.brand-mark {
  width: 22px; height: 22px; border-radius: 6px;
  background: linear-gradient(135deg, var(--ink) 0%, var(--accent) 100%);
  position: relative;
}
.brand-mark::after {
  content: ''; position: absolute; inset: 4px; border-radius: 3px;
  background: linear-gradient(135deg, transparent 40%, rgba(255,255,255,.35) 100%);
}
.nav-primary { display: flex; gap: 32px; }
.nav-primary a { font-size: .93rem; color: var(--ink-soft); font-weight: 500; }
.nav-primary a:hover { color: var(--ink); }
.nav-cta { display: inline-flex; }
.nav-toggle { display: none; background: none; border: 0; padding: 8px; cursor: pointer; }
.nav-toggle span { display: block; width: 22px; height: 2px; background: var(--ink); margin: 4px 0; transition: .2s; border-radius: 2px; }
.mobile-menu { display: none; flex-direction: column; padding: 16px 24px 24px; gap: 16px; border-top: 1px solid var(--line); background: #fff; }
.mobile-menu a { font-size: 1rem; font-weight: 500; padding: 8px 0; }
.mobile-menu .btn { justify-content: center; margin-top: 8px; }

@media (max-width: 860px) {
  .nav-primary, .nav-cta { display: none; }
  .nav-toggle { display: block; }
  .mobile-menu[hidden] { display: none; }
  .mobile-menu:not([hidden]) { display: flex; }
}

/* Hero */
.hero {
  padding: 120px 0 100px;
  background:
    radial-gradient(1200px 500px at 80% -10%, rgba(124,58,237,.08), transparent 60%),
    radial-gradient(900px 500px at 10% 0%, rgba(79,70,229,.08), transparent 60%),
    var(--paper);
  border-bottom: 1px solid var(--line-soft);
}
.hero-inner { max-width: 900px; }
.hero h1 { margin-bottom: 24px; }
.hero h1 .accent { font-family: 'Instrument Serif', Georgia, serif; font-style: italic; font-weight: 400; background: linear-gradient(135deg, var(--accent), var(--accent-2)); -webkit-background-clip: text; background-clip: text; color: transparent; letter-spacing: 0; }
.hero-sub { font-size: clamp(1.05rem, 1.5vw, 1.2rem); color: var(--ink-soft); max-width: 640px; margin-bottom: 36px; }
.cta-row { display: flex; gap: 12px; flex-wrap: wrap; }

.hero-meta {
  display: flex; gap: 40px; margin-top: 72px; padding-top: 40px;
  border-top: 1px solid var(--line); flex-wrap: wrap;
}
.hero-meta div { flex: 1 1 200px; }
.hero-meta .k { font-size: 2rem; font-weight: 600; letter-spacing: -0.02em; margin-bottom: 4px; }
.hero-meta .v { font-size: .88rem; color: var(--muted); }

/* Sections */
.section-head { max-width: 720px; margin-bottom: 56px; }
.section-head h2 { margin-bottom: 16px; }
.section-head p { font-size: 1.1rem; color: var(--muted); }

/* Services cards */
.services { background: var(--paper); }
.cards { display: grid; grid-template-columns: repeat(3, 1fr); gap: 24px; }
@media (max-width: 900px) { .cards { grid-template-columns: 1fr; } }
.card {
  background: var(--paper-alt); border: 1px solid var(--line);
  border-radius: var(--radius); padding: 36px 32px;
  transition: transform .25s ease, box-shadow .25s ease, border-color .25s ease;
}
.card:hover { transform: translateY(-4px); box-shadow: var(--shadow-md); border-color: var(--ink); }
.card-num {
  font-family: 'Instrument Serif', Georgia, serif; font-style: italic;
  font-size: 1.5rem; color: var(--accent); margin-bottom: 24px;
}
.card h3 { margin-bottom: 12px; }
.card p { color: var(--ink-soft); font-size: .95rem; margin-bottom: 16px; }
.card ul { list-style: none; padding: 0; margin: 0; }
.card li { font-size: .88rem; color: var(--muted); padding: 6px 0; border-top: 1px solid var(--line); }
.card li:first-child { border-top: 0; }

/* Approach */
.approach { background: var(--paper-warm); }
.steps { display: grid; grid-template-columns: repeat(3, 1fr); gap: 32px; list-style: none; padding: 0; margin: 0; counter-reset: step; }
@media (max-width: 900px) { .steps { grid-template-columns: 1fr; } }
.steps li { position: relative; padding: 32px 0 0; border-top: 1px solid var(--ink); }
.step-num {
  font-family: 'Instrument Serif', Georgia, serif; font-style: italic;
  font-size: 2.2rem; color: var(--ink); margin-bottom: 20px; line-height: 1;
}
.steps h3 { margin-bottom: 10px; font-size: 1.35rem; }
.steps p { color: var(--ink-soft); font-size: .95rem; }

/* About */
.about { background: var(--paper); }
.about-grid { display: grid; grid-template-columns: 1fr 1fr; gap: 80px; align-items: start; }
@media (max-width: 900px) { .about-grid { grid-template-columns: 1fr; gap: 32px; } }
.about-body p { font-size: 1.05rem; margin-bottom: 20px; }
.about-facts {
  margin-top: 24px; display: grid; grid-template-columns: 1fr 1fr; gap: 20px;
  padding-top: 24px; border-top: 1px solid var(--line);
}
.about-facts dt { font-size: .78rem; text-transform: uppercase; letter-spacing: .08em; color: var(--muted); margin-bottom: 4px; }
.about-facts dd { margin: 0 0 12px; font-weight: 500; color: var(--ink); font-size: .95rem; }

/* Contact */
.contact { background: var(--ink); color: #fff; }
.contact h2, .contact h3 { color: #fff; }
.contact p { color: rgba(255,255,255,.72); }
.contact .eyebrow { color: rgba(255,255,255,.55); }
.contact .eyebrow::before { background: rgba(255,255,255,.4); }
.contact-grid { display: grid; grid-template-columns: 1fr 1fr; gap: 64px; align-items: start; }
@media (max-width: 900px) { .contact-grid { grid-template-columns: 1fr; gap: 40px; } }
.contact-info { list-style: none; padding: 0; margin: 32px 0 0; }
.contact-info li { padding: 16px 0; border-top: 1px solid rgba(255,255,255,.12); font-size: .95rem; color: rgba(255,255,255,.85); }
.contact-info li strong { display: block; font-size: .75rem; text-transform: uppercase; letter-spacing: .1em; color: rgba(255,255,255,.55); font-weight: 500; margin-bottom: 6px; }
.contact-info a { color: rgba(255,255,255,.9); }
.contact-info a:hover { color: #fff; }

/* Form */
.form { display: grid; gap: 18px; background: rgba(255,255,255,.04); padding: 32px; border-radius: var(--radius); border: 1px solid rgba(255,255,255,.08); }
.form label { display: block; font-size: .82rem; color: rgba(255,255,255,.7); font-weight: 500; }
.form input, .form textarea {
  width: 100%; margin-top: 8px;
  padding: 12px 14px; font-size: .95rem; font-family: inherit;
  background: rgba(255,255,255,.06); border: 1px solid rgba(255,255,255,.14);
  border-radius: var(--radius-sm); color: #fff;
  transition: border-color .18s ease, background .18s ease;
}
.form input:focus, .form textarea:focus { outline: none; border-color: rgba(255,255,255,.5); background: rgba(255,255,255,.1); }
.form textarea { resize: vertical; min-height: 120px; }
.form .btn { width: 100%; margin-top: 8px; background: #fff; color: var(--ink); border-color: #fff; }
.form .btn:hover { background: var(--accent); border-color: var(--accent); color: #fff; }
.form-note { font-size: .82rem; color: rgba(255,255,255,.55); }

.alert { padding: 14px 18px; border-radius: var(--radius-sm); font-size: .92rem; margin-bottom: 20px; }
.alert-success { background: rgba(16,185,129,.15); color: #A7F3D0; border: 1px solid rgba(16,185,129,.35); }
.alert-error { background: rgba(239,68,68,.15); color: #FCA5A5; border: 1px solid rgba(239,68,68,.35); }

/* Footer */
.site-footer { background: var(--paper-warm); border-top: 1px solid var(--line); padding: 72px 0 0; }
.footer-grid { display: grid; grid-template-columns: 1.4fr 1fr 1fr 1.4fr; gap: 40px; padding-bottom: 56px; }
@media (max-width: 860px) { .footer-grid { grid-template-columns: 1fr 1fr; } }
@media (max-width: 520px) { .footer-grid { grid-template-columns: 1fr; } }
.footer-brand p { margin-top: 12px; font-size: .9rem; }
.footer-title { font-size: .78rem; text-transform: uppercase; letter-spacing: .1em; color: var(--muted); margin-bottom: 16px; font-weight: 500; }
.site-footer a { display: block; padding: 4px 0; font-size: .93rem; color: var(--ink-soft); }
.site-footer a:hover { color: var(--accent); }
.site-footer p { font-size: .9rem; margin: 0; }
.footer-bottom { border-top: 1px solid var(--line); padding: 24px 0; }
.footer-bottom-inner { display: flex; justify-content: space-between; gap: 16px; flex-wrap: wrap; font-size: .82rem; color: var(--muted); }

/* Legal pages */
.legal-page { padding: 72px 0 96px; background: var(--paper); }
.legal-page .container { max-width: 780px; }
.legal-page h1 { font-size: clamp(2rem, 4vw, 2.8rem); margin-bottom: 8px; }
.legal-page .meta { color: var(--muted); font-size: .9rem; margin-bottom: 40px; padding-bottom: 24px; border-bottom: 1px solid var(--line); }
.legal-page h2 { font-size: 1.35rem; margin: 40px 0 12px; }
.legal-page h3 { font-size: 1.05rem; margin: 24px 0 8px; }
.legal-page p, .legal-page li { color: var(--ink-soft); font-size: .98rem; }
.legal-page ul { padding-left: 22px; }
.legal-page li { margin-bottom: 6px; }
.legal-page a { color: var(--accent); text-decoration: underline; text-underline-offset: 3px; }

/* Utility */
.text-center { text-align: center; }
.mt-0 { margin-top: 0; }

/* Reveal on scroll */
.reveal { opacity: 0; transform: translateY(16px); transition: opacity .6s ease, transform .6s ease; }
.reveal.in { opacity: 1; transform: none; }

@media (prefers-reduced-motion: reduce) {
  * { animation: none !important; transition: none !important; scroll-behavior: auto !important; }
}