/* ============================================================
   M3 Consulting — design tokens
   Palette:  paper #F7F7F4 / ink #14181C / navy #1C2B45
             stamp (accent) #B3402E / mint (secondary) #3F7A5C
   Type:     Space Grotesk (display) / IBM Plex Sans (body) / IBM Plex Mono (labels, codes)
   Signature: regulation "stamp" tags + ledger grid texture
   ============================================================ */

:root {
  --paper: #F7F7F4;
  --paper-dim: #EFEFEA;
  --ink: #14181C;
  --muted: #5B6470;
  --line: #DDDCD5;
  --navy: #1C2B45;
  --navy-2: #26395C;
  --navy-tint: #E9ECF2;
  --stamp: #B3402E;
  --stamp-tint: #F5E3DF;
  --mint: #3F7A5C;
  --mint-tint: #E3EDE7;
  --paper-rgb: 247, 247, 244;

  --font-display: "Space Grotesk", "Helvetica Neue", Arial, sans-serif;
  --font-body: "IBM Plex Sans", "Segoe UI", Arial, sans-serif;
  --font-mono: "IBM Plex Mono", "SFMono-Regular", Consolas, monospace;

  --maxw: 1180px;
  --radius: 3px;
}

* { box-sizing: border-box; }
html { scroll-behavior: smooth; }

@media (prefers-reduced-motion: reduce) {
  html { scroll-behavior: auto; }
  *, *::before, *::after { animation-duration: 0.001ms !important; animation-iteration-count: 1 !important; transition-duration: 0.001ms !important; scroll-behavior: auto !important; }
}

body {
  margin: 0;
  background: var(--paper);
  color: var(--ink);
  font-family: var(--font-body);
  font-size: 16px;
  line-height: 1.6;
  -webkit-font-smoothing: antialiased;
}

h1, h2, h3, h4 {
  font-family: var(--font-display);
  font-weight: 600;
  line-height: 1.15;
  margin: 0 0 0.5em;
  letter-spacing: -0.01em;
}

h1 { font-size: clamp(2.2rem, 4.2vw, 3.6rem); font-weight: 700; letter-spacing: -0.02em; }
h2 { font-size: clamp(1.6rem, 2.6vw, 2.2rem); }
h3 { font-size: 1.25rem; }

p { margin: 0 0 1em; color: var(--ink); }
a { color: var(--navy); text-decoration: none; }
a:hover { color: var(--stamp); }

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

.container {
  max-width: var(--maxw);
  margin: 0 auto;
  padding: 0 32px;
}

/* -------------------- utility -------------------- */
.mono { font-family: var(--font-mono); }
.eyebrow {
  font-family: var(--font-mono);
  font-size: 0.72rem;
  letter-spacing: 0.14em;
  text-transform: uppercase;
  color: var(--stamp);
  display: inline-flex;
  align-items: center;
  gap: 10px;
  margin-bottom: 14px;
}
.eyebrow::before {
  content: "";
  width: 22px;
  height: 1px;
  background: var(--stamp);
  display: inline-block;
}
.muted { color: var(--muted); }
.center { text-align: center; }

section { padding: 88px 0; }
@media (max-width: 720px) { section { padding: 56px 0; } }

.section-head { max-width: 640px; margin-bottom: 48px; }
.section-head.center { margin-left: auto; margin-right: auto; text-align: center; }

/* -------------------- buttons -------------------- */
.btn {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  font-family: var(--font-mono);
  font-size: 0.82rem;
  letter-spacing: 0.03em;
  text-transform: uppercase;
  padding: 13px 24px;
  border-radius: var(--radius);
  border: 1px solid transparent;
  cursor: pointer;
  transition: transform 0.15s ease, background 0.15s ease, color 0.15s ease, border-color 0.15s ease;
}
.btn-primary { background: var(--navy); color: #fff; }
.btn-primary:hover { background: var(--stamp); color: #fff; transform: translateY(-1px); }
.btn-ghost { border-color: var(--ink); color: var(--ink); }
.btn-ghost:hover { border-color: var(--stamp); color: var(--stamp); transform: translateY(-1px); }
.btn-on-dark { border-color: rgba(255,255,255,0.4); color: #fff; }
.btn-on-dark:hover { border-color: #fff; color: #fff; background: rgba(255,255,255,0.08); }

/* -------------------- header / nav -------------------- */
.site-header {
  position: sticky;
  top: 0;
  z-index: 50;
  background: rgba(var(--paper-rgb), 0.92);
  backdrop-filter: saturate(140%) blur(6px);
  border-bottom: 1px solid var(--line);
}
.nav {
  display: flex;
  align-items: center;
  justify-content: space-between;
  padding: 16px 0;
}
.brand { display: flex; align-items: center; gap: 12px; }
.brand img { height: 34px; width: auto; }
.brand-name {
  font-family: var(--font-display);
  font-weight: 700;
  font-size: 1.05rem;
  letter-spacing: -0.01em;
  color: var(--ink);
}
.brand-name span { color: var(--stamp); }

.nav-links {
  display: flex;
  align-items: center;
  gap: 34px;
  list-style: none;
  margin: 0;
  padding: 0;
}
.nav-links a {
  font-family: var(--font-mono);
  font-size: 0.8rem;
  letter-spacing: 0.04em;
  text-transform: uppercase;
  color: var(--ink);
  padding: 6px 0;
  border-bottom: 1px solid transparent;
}
.nav-links a:hover, .nav-links a.active { color: var(--stamp); border-color: var(--stamp); }

.nav-cta { display: none; }
@media (min-width: 861px) { .nav-cta { display: inline-flex; } }

.nav-toggle {
  display: none;
  flex-direction: column;
  gap: 5px;
  background: none;
  border: none;
  cursor: pointer;
  padding: 6px;
}
.nav-toggle span { width: 24px; height: 2px; background: var(--ink); display: block; }

@media (max-width: 860px) {
  .nav-links {
    position: absolute;
    top: 100%; left: 0; right: 0;
    background: var(--paper);
    border-bottom: 1px solid var(--line);
    flex-direction: column;
    align-items: flex-start;
    gap: 0;
    max-height: 0;
    overflow: hidden;
    transition: max-height 0.25s ease;
  }
  .nav-links.open { max-height: 420px; }
  .nav-links li { width: 100%; }
  .nav-links a { display: block; width: 100%; padding: 16px 32px; border-bottom: 1px solid var(--line); }
  .nav-toggle { display: flex; }
}

/* -------------------- hero -------------------- */
.hero {
  position: relative;
  padding: 96px 0 88px;
  background-image:
    linear-gradient(rgba(var(--paper-rgb),1) 0%, rgba(var(--paper-rgb),0.4) 60%),
    repeating-linear-gradient(0deg, rgba(28,43,69,0.06) 0px, rgba(28,43,69,0.06) 1px, transparent 1px, transparent 48px),
    repeating-linear-gradient(90deg, rgba(28,43,69,0.06) 0px, rgba(28,43,69,0.06) 1px, transparent 1px, transparent 48px);
  border-bottom: 1px solid var(--line);
}
.hero-inner { max-width: 760px; }
.hero .lede { font-size: 1.15rem; color: var(--muted); max-width: 620px; }
.hero-actions { display: flex; gap: 14px; margin-top: 28px; flex-wrap: wrap; }

.stamp-row {
  display: flex;
  gap: 12px;
  flex-wrap: wrap;
  margin-top: 56px;
  padding-top: 28px;
  border-top: 1px dashed var(--line);
}
.stamp {
  font-family: var(--font-mono);
  font-size: 0.72rem;
  letter-spacing: 0.04em;
  color: var(--navy);
  border: 1px solid var(--line);
  background: #fff;
  padding: 7px 12px;
  border-radius: var(--radius);
}

/* -------------------- cards -------------------- */
.grid { display: grid; gap: 24px; }
.grid-2 { grid-template-columns: repeat(2, 1fr); }
.grid-3 { grid-template-columns: repeat(3, 1fr); }
.grid-4 { grid-template-columns: repeat(4, 1fr); }
@media (max-width: 980px) { .grid-3, .grid-4 { grid-template-columns: repeat(2, 1fr); } }
@media (max-width: 640px) { .grid-2, .grid-3, .grid-4 { grid-template-columns: 1fr; } }

.card {
  background: #fff;
  border: 1px solid var(--line);
  border-radius: var(--radius);
  padding: 32px;
  position: relative;
}
.card-tab {
  position: absolute;
  top: -1px; right: 24px;
  background: var(--navy);
  color: #fff;
  font-family: var(--font-mono);
  font-size: 0.66rem;
  letter-spacing: 0.05em;
  padding: 5px 10px;
  border-radius: 0 0 3px 3px;
}
.card h3 { margin-bottom: 10px; }
.card .code {
  font-family: var(--font-mono);
  font-size: 0.72rem;
  color: var(--stamp);
  letter-spacing: 0.03em;
  display: block;
  margin-bottom: 12px;
}
.card-link {
  display: inline-flex;
  align-items: center;
  gap: 6px;
  font-family: var(--font-mono);
  font-size: 0.78rem;
  text-transform: uppercase;
  letter-spacing: 0.03em;
  margin-top: 14px;
}

/* -------------------- differentiators -------------------- */
.diff {
  border-left: 3px solid var(--stamp);
  padding-left: 20px;
}
.diff .code { font-family: var(--font-mono); font-size: 0.72rem; color: var(--muted); letter-spacing: 0.04em; }

/* -------------------- dark band -------------------- */
.band-navy {
  background: var(--navy);
  color: #fff;
}
.band-navy h2, .band-navy h3 { color: #fff; }
.band-navy p { color: rgba(255,255,255,0.78); }
.band-navy .eyebrow { color: #E8A38F; }
.band-navy .eyebrow::before { background: #E8A38F; }
/* Cards keep their normal light-background text colors even inside a dark band */
.band-navy .card h3 { color: var(--ink); }
.band-navy .card p { color: var(--ink); }
.band-navy .card p.muted { color: var(--muted); }

/* -------------------- ledger list -------------------- */
.ledger { list-style: none; margin: 0; padding: 0; }
.ledger li {
  display: flex;
  gap: 14px;
  align-items: flex-start;
  padding: 14px 0;
  border-bottom: 1px solid var(--line);
}
.ledger li:first-child { border-top: 1px solid var(--line); }
.ledger .mark {
  font-family: var(--font-mono);
  color: var(--mint);
  flex-shrink: 0;
}

/* -------------------- team -------------------- */
.avatar {
  width: 84px; height: 84px;
  border-radius: 50%;
  background: var(--navy);
  color: #fff;
  display: flex; align-items: center; justify-content: center;
  font-family: var(--font-display);
  font-weight: 700;
  font-size: 1.5rem;
  margin-bottom: 18px;
  flex-shrink: 0;
}
.team-card { display: flex; flex-direction: column; }
.team-role { font-family: var(--font-mono); font-size: 0.78rem; color: var(--stamp); margin-bottom: 12px; }

/* -------------------- insights -------------------- */
.post {
  padding: 32px 0;
  border-bottom: 1px solid var(--line);
  display: grid;
  grid-template-columns: 140px 1fr;
  gap: 28px;
}
.post:first-child { border-top: 1px solid var(--line); }
@media (max-width: 640px) { .post { grid-template-columns: 1fr; gap: 10px; } }
.post-meta { font-family: var(--font-mono); font-size: 0.72rem; color: var(--muted); line-height: 1.8; }
.post-tag {
  display: inline-block;
  background: var(--stamp-tint);
  color: var(--stamp);
  padding: 3px 8px;
  border-radius: 2px;
  font-family: var(--font-mono);
  font-size: 0.68rem;
  letter-spacing: 0.03em;
}

/* -------------------- forms -------------------- */
.form-row { margin-bottom: 20px; }
label {
  display: block;
  font-family: var(--font-mono);
  font-size: 0.75rem;
  letter-spacing: 0.04em;
  text-transform: uppercase;
  color: var(--muted);
  margin-bottom: 8px;
}
input, textarea, select {
  width: 100%;
  border: 1px solid var(--line);
  background: #fff;
  border-radius: var(--radius);
  padding: 13px 14px;
  font-family: var(--font-body);
  font-size: 0.96rem;
  color: var(--ink);
}
input:focus, textarea:focus, select:focus {
  outline: 2px solid var(--navy);
  outline-offset: 1px;
  border-color: var(--navy);
}
textarea { resize: vertical; min-height: 140px; }

.contact-detail { display: flex; gap: 14px; padding: 16px 0; border-bottom: 1px solid var(--line); }
.contact-detail .label { font-family: var(--font-mono); font-size: 0.72rem; color: var(--muted); text-transform: uppercase; letter-spacing: 0.04em; width: 92px; flex-shrink: 0; padding-top: 2px; }

/* -------------------- footer -------------------- */
.site-footer {
  background: var(--navy);
  color: rgba(255,255,255,0.7);
  padding: 56px 0 28px;
  margin-top: 96px;
}
.site-footer a { color: #fff; }
.site-footer a:hover { color: #E8A38F; }
.footer-top {
  display: flex;
  justify-content: space-between;
  gap: 40px;
  flex-wrap: wrap;
  padding-bottom: 36px;
  border-bottom: 1px solid rgba(255,255,255,0.15);
}
.footer-brand { display: flex; align-items: center; gap: 12px; margin-bottom: 12px; }
.footer-brand img { height: 30px; filter: invert(1) brightness(2); }
.footer-cols { display: flex; gap: 64px; flex-wrap: wrap; }
.footer-col h4 { color: #fff; font-family: var(--font-mono); font-size: 0.75rem; letter-spacing: 0.06em; text-transform: uppercase; margin-bottom: 14px; }
.footer-col ul { list-style: none; margin: 0; padding: 0; }
.footer-col li { margin-bottom: 10px; font-size: 0.9rem; }
.footer-bottom {
  display: flex;
  justify-content: space-between;
  flex-wrap: wrap;
  gap: 10px;
  padding-top: 24px;
  font-family: var(--font-mono);
  font-size: 0.72rem;
  color: rgba(255,255,255,0.45);
}

/* -------------------- reveal animation -------------------- */
.reveal { opacity: 0; transform: translateY(16px); transition: opacity 0.6s ease, transform 0.6s ease; }
.reveal.in { opacity: 1; transform: translateY(0); }

/* -------------------- page hero (inner pages) -------------------- */
.page-hero {
  padding: 64px 0 56px;
  border-bottom: 1px solid var(--line);
  background:
    repeating-linear-gradient(90deg, rgba(28,43,69,0.05) 0px, rgba(28,43,69,0.05) 1px, transparent 1px, transparent 48px);
}
.page-hero p.lede { color: var(--muted); font-size: 1.05rem; max-width: 620px; }

/* -------------------- process steps -------------------- */
.steps { list-style: none; margin: 0; padding: 0; display: grid; gap: 0; }
.step {
  display: grid;
  grid-template-columns: 64px 1fr;
  gap: 20px;
  padding: 26px 0;
  border-bottom: 1px solid var(--line);
}
.step:first-child { border-top: 1px solid var(--line); }
.step-num { font-family: var(--font-mono); color: var(--stamp); font-size: 0.95rem; }

/* -------------------- misc -------------------- */
.divider { height: 1px; background: var(--line); border: none; margin: 0; }
.tag-row { display: flex; gap: 10px; flex-wrap: wrap; margin-bottom: 18px; }