/* ============================================================
   Rellim Consulting — design system
   Distinctive-but-credible: dark "blueprint" architecture aesthetic.
   ============================================================ */
:root {
  /* palette — deep slate ink + architectural blue + warm signal accent */
  --ink:        #0b0f17;   /* near-black background */
  --ink-2:      #111726;   /* raised surface */
  --ink-3:      #18203200; /* placeholder */
  --surface:    #141b2b;   /* card */
  --surface-2:  #1b2438;   /* card hover / alt */
  --line:       #283349;   /* hairline borders */
  --line-soft:  #1e2740;
  --text:       #e8edf6;   /* primary text */
  --muted:      #9fb0c9;   /* secondary text */
  --faint:      #6c7c98;   /* tertiary */
  --accent:     #4d8dff;   /* architectural blue */
  --accent-2:   #38e0c8;   /* signal teal */
  --accent-ink: #0b1220;
  --warn:       #f4a261;

  --radius:   14px;
  --radius-sm: 9px;
  --radius-lg: 22px;
  --maxw: 1180px;
  --pad: clamp(20px, 5vw, 56px);

  --shadow:    0 1px 0 rgba(255,255,255,.03) inset, 0 18px 50px -24px rgba(0,0,0,.7);
  --shadow-lg: 0 30px 80px -30px rgba(0,0,0,.8);

  --font-display: "Space Grotesk", system-ui, sans-serif;
  --font-body: "Inter", system-ui, -apple-system, sans-serif;

  --t: 220ms cubic-bezier(.4,.1,.2,1);
}

* { box-sizing: border-box; }
[hidden] { display: none !important; }

html { scroll-behavior: smooth; -webkit-text-size-adjust: 100%; }
body {
  margin: 0;
  background: var(--ink);
  color: var(--text);
  font-family: var(--font-body);
  font-size: 17px;
  line-height: 1.65;
  -webkit-font-smoothing: antialiased;
  text-rendering: optimizeLegibility;
  overflow-x: hidden;
}

/* subtle global blueprint grid */
body::before {
  content: "";
  position: fixed; inset: 0;
  background-image:
    linear-gradient(rgba(77,141,255,.045) 1px, transparent 1px),
    linear-gradient(90deg, rgba(77,141,255,.045) 1px, transparent 1px);
  background-size: 46px 46px;
  mask-image: radial-gradient(ellipse 90% 60% at 50% 0%, #000 30%, transparent 78%);
  pointer-events: none; z-index: 0;
}

.wrap { width: 100%; max-width: var(--maxw); margin-inline: auto; padding-inline: var(--pad); }
main { position: relative; z-index: 1; }

a { color: inherit; text-decoration: none; }
img { max-width: 100%; display: block; }
h1, h2, h3, h4 { font-family: var(--font-display); font-weight: 600; line-height: 1.1; letter-spacing: -0.02em; margin: 0; }
p { margin: 0; }

.skip {
  position: absolute; left: -999px; top: 0; z-index: 100;
  background: var(--accent); color: #fff; padding: 10px 16px; border-radius: 0 0 8px 0;
}
.skip:focus { left: 0; }

svg.ic, svg.sc-ic, svg.btn-ic, svg.brand-ic, svg.foot-ic, svg.li-ic,
svg.cc-svg, svg.da-ic, svg.sm-ic { width: 1em; height: 1em; flex: none; }

/* ---------------------------------------------- header */
.site-header {
  position: sticky; top: 0; z-index: 50;
  background: rgba(11,15,23,.78);
  backdrop-filter: blur(14px) saturate(140%);
  border-bottom: 1px solid var(--line-soft);
}
.header-inner { display: flex; align-items: center; gap: 28px; height: 70px; }
.brand { display: flex; align-items: center; gap: 12px; margin-right: auto; }
.brand-logo { height: 42px; width: auto; display: block; }
.foot-mark { width: 48px; height: 48px; object-fit: contain; flex: none; }
.brand-mark {
  display: grid; place-items: center; width: 38px; height: 38px;
  border: 1px solid var(--line); border-radius: 10px;
  color: var(--accent-2); background: linear-gradient(160deg, var(--surface), var(--ink-2));
  font-size: 20px;
}
.brand-text { display: flex; flex-direction: column; line-height: 1; }
.brand-text b { font-family: var(--font-display); font-size: 20px; letter-spacing: -.01em; font-weight: 700; }
.brand-text small { color: var(--faint); font-size: 11px; letter-spacing: .28em; text-transform: uppercase; margin-top: 4px; }

.main-nav { display: flex; gap: 6px; }
.main-nav a {
  font-size: 15px; color: var(--muted); padding: 8px 14px; border-radius: 8px;
  font-weight: 450; transition: color var(--t), background var(--t);
}
.main-nav a:hover { color: var(--text); background: var(--surface); }
.main-nav a.active { color: var(--text); }
.main-nav a.active::after {
  content: ""; display: block; height: 2px; margin-top: 5px; border-radius: 2px;
  background: linear-gradient(90deg, var(--accent), var(--accent-2));
}
.nav-cta {
  font-size: 15px; font-weight: 500; padding: 9px 18px; border-radius: 9px;
  border: 1px solid var(--line); color: var(--text);
  transition: border-color var(--t), background var(--t), transform var(--t);
}
.nav-cta:hover { border-color: var(--accent); background: var(--surface); transform: translateY(-1px); }
.nav-toggle { display: none; background: none; border: 0; cursor: pointer; width: 40px; height: 40px; padding: 9px; }
.nav-toggle span { display: block; height: 2px; background: var(--text); border-radius: 2px; margin: 4px 0; transition: var(--t); }

/* ---------------------------------------------- buttons */
.btn {
  display: inline-flex; align-items: center; gap: 9px;
  font-family: var(--font-display); font-weight: 500; font-size: 16px;
  padding: 13px 24px; border-radius: 11px; cursor: pointer; border: 1px solid transparent;
  transition: transform var(--t), box-shadow var(--t), background var(--t), border-color var(--t);
}
.btn svg { font-size: 18px; transition: transform var(--t); }
.btn-primary {
  background: linear-gradient(135deg, var(--accent), #3a6fd9);
  color: #fff; box-shadow: 0 10px 30px -10px rgba(77,141,255,.6);
}
.btn-primary:hover { transform: translateY(-2px); box-shadow: 0 16px 40px -12px rgba(77,141,255,.7); }
.btn-primary:hover svg { transform: translateX(4px); }
.btn-ghost { border-color: var(--line); color: var(--text); }
.btn-ghost:hover { border-color: var(--accent); background: var(--surface); transform: translateY(-2px); }
.btn-lg { padding: 16px 30px; font-size: 17px; }

/* ---------------------------------------------- hero */
.hero { position: relative; padding: clamp(70px, 12vw, 140px) 0 clamp(50px, 8vw, 90px); overflow: hidden; }
.hero-grid-bg {
  position: absolute; inset: 0; z-index: 0;
  background:
    radial-gradient(60% 50% at 75% 10%, rgba(77,141,255,.18), transparent 60%),
    radial-gradient(50% 50% at 10% 90%, rgba(56,224,200,.10), transparent 55%);
}
.hero-inner { position: relative; z-index: 1; max-width: 880px; }
.eyebrow {
  display: inline-block; font-family: var(--font-display); font-size: 13px; font-weight: 500;
  letter-spacing: .2em; text-transform: uppercase; color: var(--accent-2);
  padding: 7px 14px; border: 1px solid var(--line); border-radius: 100px; margin-bottom: 28px;
  background: rgba(20,27,43,.6);
}
.hero h1 { font-size: clamp(2.6rem, 6vw, 4.4rem); font-weight: 700; letter-spacing: -.035em; }
.hero .lede { margin-top: 26px; font-size: clamp(1.05rem, 2vw, 1.3rem); color: var(--muted); max-width: 720px; line-height: 1.6; }
.hero-actions { margin-top: 40px; display: flex; gap: 14px; flex-wrap: wrap; }

/* ---------------------------------------------- logo strip */
.strip { border-block: 1px solid var(--line-soft); background: rgba(17,23,38,.5); }
.strip-inner { display: flex; align-items: center; gap: 32px; padding-block: 22px; flex-wrap: wrap; }
.strip-label { font-size: 12px; letter-spacing: .18em; text-transform: uppercase; color: var(--faint); white-space: nowrap; }
.logo-row { display: flex; gap: 12px; flex-wrap: wrap; }
.logo-chip {
  font-family: var(--font-display); font-size: 14px; font-weight: 500; color: var(--muted);
  padding: 6px 14px; border: 1px solid var(--line); border-radius: 8px; background: var(--surface);
}

/* ---------------------------------------------- sections */
.section { padding: clamp(60px, 9vw, 110px) 0; position: relative; }
.section-alt { background: linear-gradient(180deg, rgba(17,23,38,.6), rgba(11,15,23,0)); border-block: 1px solid var(--line-soft); }
.section-head { max-width: 720px; margin-bottom: 56px; }
.kicker {
  font-family: var(--font-display); font-size: 13px; font-weight: 500; letter-spacing: .18em;
  text-transform: uppercase; color: var(--accent); display: block; margin-bottom: 16px;
}
.section-head h2 { font-size: clamp(1.8rem, 4vw, 2.7rem); }
.section-lede { margin-top: 18px; color: var(--muted); font-size: 1.1rem; }

/* ---------------------------------------------- differentiator flow */
.diff-flow { display: flex; align-items: stretch; gap: 14px; flex-wrap: wrap; }
.diff-step {
  flex: 1; min-width: 220px; background: var(--surface); border: 1px solid var(--line);
  border-radius: var(--radius); padding: 30px; position: relative; box-shadow: var(--shadow);
}
.diff-step .diff-k {
  font-family: var(--font-display); font-size: 1.25rem; font-weight: 600; color: var(--text);
  display: block; margin-bottom: 12px;
}
.diff-step .diff-k::before {
  content: ""; display: inline-block; width: 26px; height: 2px; vertical-align: middle;
  margin-right: 10px; background: linear-gradient(90deg, var(--accent), var(--accent-2));
}
.diff-step p { color: var(--muted); font-size: .98rem; }
.diff-arrow { display: grid; place-items: center; color: var(--faint); font-size: 24px; flex: none; }

/* ---------------------------------------------- services grid (home) */
.svc-grid { display: grid; grid-template-columns: repeat(3, 1fr); gap: 18px; }
.svc-card {
  background: var(--surface); border: 1px solid var(--line); border-radius: var(--radius);
  padding: 32px 28px; display: flex; flex-direction: column; gap: 14px;
  transition: transform var(--t), border-color var(--t), background var(--t);
  position: relative; overflow: hidden;
}
.svc-card::before {
  content: ""; position: absolute; inset: 0; background:
    radial-gradient(80% 60% at 100% 0%, rgba(77,141,255,.12), transparent 60%);
  opacity: 0; transition: opacity var(--t);
}
.svc-card:hover { transform: translateY(-4px); border-color: var(--accent); background: var(--surface-2); }
.svc-card:hover::before { opacity: 1; }
.svc-ic {
  display: grid; place-items: center; width: 50px; height: 50px; font-size: 26px;
  border: 1px solid var(--line); border-radius: 12px; color: var(--accent-2);
  background: linear-gradient(160deg, var(--ink-2), var(--surface)); position: relative; z-index: 1;
}
.svc-ic.lg { width: 60px; height: 60px; font-size: 30px; }
.svc-card h3 { font-size: 1.25rem; position: relative; z-index: 1; }
.svc-card p { color: var(--muted); font-size: .97rem; flex: 1; position: relative; z-index: 1; }
.svc-more { font-family: var(--font-display); font-size: .9rem; color: var(--accent); display: inline-flex; align-items: center; gap: 6px; position: relative; z-index: 1; }
.svc-more svg { transition: transform var(--t); }
.svc-card:hover .svc-more svg { transform: translateX(4px); }

/* ---------------------------------------------- network pillars */
.net-wrap { display: grid; grid-template-columns: 1fr 1fr; gap: 56px; align-items: start; }
.np-grid { display: grid; gap: 16px; }
.np-card { background: var(--surface); border: 1px solid var(--line); border-radius: var(--radius); padding: 26px; }
.np-card h4 { font-size: 1.1rem; margin-bottom: 8px; }
.np-card p { color: var(--muted); font-size: .96rem; }

/* ---------------------------------------------- cta band */
.cta-band {
  position: relative; padding: clamp(60px, 9vw, 100px) 0; overflow: hidden;
  background: linear-gradient(135deg, #14233f, #0d1322);
  border-top: 1px solid var(--line);
}
.cta-band::before {
  content: ""; position: absolute; inset: 0;
  background:
    linear-gradient(rgba(77,141,255,.06) 1px, transparent 1px),
    linear-gradient(90deg, rgba(77,141,255,.06) 1px, transparent 1px);
  background-size: 40px 40px;
  mask-image: radial-gradient(60% 100% at 50% 50%, #000, transparent 75%);
}
.cta-inner { position: relative; z-index: 1; text-align: center; max-width: 720px; margin-inline: auto; }
.cta-inner h2 { font-size: clamp(1.8rem, 4vw, 2.7rem); }
.cta-inner p { margin: 18px auto 34px; color: var(--muted); font-size: 1.1rem; max-width: 580px; }

/* ---------------------------------------------- page hero (interior) */
.page-hero { position: relative; padding: clamp(60px, 9vw, 110px) 0 clamp(40px, 6vw, 64px); overflow: hidden; }
.page-hero h1 { font-size: clamp(2.2rem, 5vw, 3.6rem); font-weight: 700; max-width: 880px; }
.page-hero .lede { margin-top: 22px; font-size: clamp(1.05rem, 2vw, 1.25rem); color: var(--muted); max-width: 760px; }

/* ---------------------------------------------- services detail */
.svc-detail-list { display: grid; gap: 18px; }
.svc-detail {
  background: var(--surface); border: 1px solid var(--line); border-radius: var(--radius-lg);
  padding: clamp(28px, 4vw, 44px); scroll-margin-top: 90px;
  display: grid; grid-template-columns: 1fr 1.1fr; gap: 36px; align-items: start;
}
.svc-detail-head { display: flex; gap: 20px; }
.svc-detail-head h2 { font-size: 1.5rem; margin-bottom: 10px; }
.svc-detail-head p { color: var(--muted); font-size: 1rem; }
.svc-points { list-style: none; padding: 0; margin: 0; display: grid; gap: 12px; }
.svc-points li { display: flex; gap: 12px; align-items: flex-start; color: var(--text); font-size: .98rem; }
.svc-points li svg { color: var(--accent-2); font-size: 19px; margin-top: 3px; }
.svc-points li span { color: var(--muted); }

/* ---------------------------------------------- capabilities grid */
.cap-grid { display: grid; grid-template-columns: repeat(3, 1fr); gap: 16px; }
.cap-group { background: var(--surface); border: 1px solid var(--line); border-radius: var(--radius); padding: 26px; }
.cap-group h3 { font-size: 1.05rem; margin-bottom: 16px; color: var(--accent-2); font-weight: 600; }
.cap-group ul { list-style: none; margin: 0; padding: 0; display: grid; gap: 9px; }
.cap-group li { color: var(--muted); font-size: .94rem; padding-left: 16px; position: relative; }
.cap-group li::before { content: ""; position: absolute; left: 0; top: .65em; width: 6px; height: 6px; border-radius: 2px; background: var(--accent); }

/* ---------------------------------------------- experience */
.logo-tiles { display: grid; grid-template-columns: repeat(3, 1fr); gap: 14px; }
.logo-tile {
  display: grid; place-items: center; text-align: center; min-height: 96px; padding: 20px;
  background: var(--surface); border: 1px solid var(--line); border-radius: var(--radius);
  font-family: var(--font-display); font-size: 1.05rem; font-weight: 500; color: var(--text);
  transition: border-color var(--t), background var(--t);
}
.logo-tile:hover { border-color: var(--accent); background: var(--surface-2); }
.fineprint { margin-top: 26px; color: var(--faint); font-size: .85rem; max-width: 820px; line-height: 1.6; }
.case-grid { display: grid; grid-template-columns: repeat(3, 1fr); gap: 18px; }
.case { background: var(--surface); border: 1px solid var(--line); border-radius: var(--radius); padding: 30px; border-top: 2px solid var(--accent); }
.case-sector { font-family: var(--font-display); font-size: .8rem; letter-spacing: .1em; text-transform: uppercase; color: var(--accent-2); }
.case h3 { font-size: 1.2rem; margin: 14px 0 12px; }
.case p { color: var(--muted); font-size: .95rem; }

/* ---------------------------------------------- approach steps */
.steps { display: grid; gap: 0; max-width: 820px; }
.step { display: grid; grid-template-columns: auto 1fr; gap: 28px; padding: 32px 0; border-bottom: 1px solid var(--line-soft); }
.step:last-child { border-bottom: 0; }
.step-n {
  font-family: var(--font-display); font-size: 2.4rem; font-weight: 700; line-height: 1;
  background: linear-gradient(160deg, var(--accent), var(--accent-2));
  -webkit-background-clip: text; background-clip: text; -webkit-text-fill-color: transparent;
  min-width: 64px;
}
.step-body h3 { font-size: 1.4rem; margin-bottom: 10px; }
.step-body p { color: var(--muted); }

/* ---------------------------------------------- about */
.about-split { display: grid; grid-template-columns: 1.4fr 1fr; gap: 48px; align-items: start; }
.about-text h2 { font-size: clamp(1.6rem, 3.4vw, 2.3rem); margin-bottom: 20px; }
.about-text p { color: var(--muted); font-size: 1.05rem; }
.about-facts { background: var(--surface); border: 1px solid var(--line); border-radius: var(--radius-lg); padding: 32px; position: sticky; top: 90px; }
.about-facts h3 { font-size: 1rem; text-transform: uppercase; letter-spacing: .1em; color: var(--faint); margin-bottom: 20px; }
.fact-list { list-style: none; margin: 0; padding: 0; display: grid; gap: 16px; }
.fact-list li { display: flex; gap: 12px; align-items: flex-start; }
.fact-list li svg { color: var(--accent-2); font-size: 19px; margin-top: 3px; flex: none; }
.fact-list li span { color: var(--muted); font-size: .96rem; }

/* ---------------------------------------------- contact */
.contact-split { display: grid; grid-template-columns: .9fr 1.1fr; gap: 40px; align-items: start; }
.contact-cards { display: grid; gap: 14px; }
.contact-card {
  display: flex; align-items: center; gap: 16px;
  background: var(--surface); border: 1px solid var(--line); border-radius: var(--radius); padding: 20px 22px;
  transition: border-color var(--t), transform var(--t);
}
a.contact-card:hover { border-color: var(--accent); transform: translateY(-2px); }
.cc-ic { display: grid; place-items: center; width: 46px; height: 46px; font-size: 22px; border: 1px solid var(--line); border-radius: 11px; color: var(--accent-2); background: var(--ink-2); flex: none; }
.contact-card b { font-family: var(--font-display); display: block; font-size: 1rem; }
.contact-card span { color: var(--muted); font-size: .95rem; }
.contact-note { margin-top: 8px; padding: 22px; border: 1px dashed var(--line); border-radius: var(--radius); }
.contact-note b { font-family: var(--font-display); }
.contact-note p { color: var(--muted); font-size: .92rem; margin-top: 8px; }

.contact-form { background: var(--surface); border: 1px solid var(--line); border-radius: var(--radius-lg); padding: clamp(26px, 4vw, 40px); }
.field { display: grid; gap: 8px; margin-bottom: 18px; }
.field-row { display: grid; grid-template-columns: 1fr 1fr; gap: 16px; }
.field label { font-family: var(--font-display); font-size: .9rem; color: var(--muted); font-weight: 500; }
.field input, .field select, .field textarea {
  font-family: var(--font-body); font-size: 1rem; color: var(--text);
  background: var(--ink-2); border: 1px solid var(--line); border-radius: var(--radius-sm);
  padding: 12px 14px; width: 100%; transition: border-color var(--t), box-shadow var(--t);
}
.field input:focus, .field select:focus, .field textarea:focus {
  outline: none; border-color: var(--accent); box-shadow: 0 0 0 3px rgba(77,141,255,.18);
}
.field textarea { resize: vertical; }
.contact-form .btn { margin-top: 6px; }
.hp-field { position: absolute; left: -9999px; width: 1px; height: 1px; opacity: 0; pointer-events: none; }
.form-status { margin-top: 16px; padding: 12px 16px; border-radius: var(--radius-sm); font-size: .92rem; }
.form-status.ok { background: rgba(56,224,200,.10); border: 1px solid rgba(56,224,200,.4); color: var(--accent-2); }
.form-status.err { background: rgba(244,162,97,.10); border: 1px solid rgba(244,162,97,.45); color: var(--warn); }
.form-fallback { margin-top: 18px; color: var(--faint); font-size: .85rem; }
.form-fallback a { color: var(--accent); }

/* ---------------------------------------------- footer */
.site-footer { border-top: 1px solid var(--line); background: var(--ink-2); position: relative; z-index: 1; }
.foot-grid { display: grid; grid-template-columns: 1.4fr 1fr 1.2fr; gap: 40px; padding: 56px 0 40px; }
.foot-brand { display: flex; gap: 14px; align-items: flex-start; }
.foot-brand b { font-family: var(--font-display); font-size: 1.05rem; }
.foot-brand p { color: var(--muted); font-size: .92rem; margin-top: 6px; max-width: 260px; }
.foot-nav { display: grid; gap: 10px; align-content: start; }
.foot-nav a { color: var(--muted); font-size: .95rem; transition: color var(--t); }
.foot-nav a:hover { color: var(--text); }
.foot-contact { display: grid; gap: 12px; align-content: start; }
.foot-contact a, .foot-contact span { display: flex; align-items: center; gap: 10px; color: var(--muted); font-size: .95rem; }
.foot-contact a:hover { color: var(--text); }
.foot-contact svg { color: var(--accent-2); font-size: 17px; }
.foot-legal { display: flex; justify-content: space-between; gap: 16px; padding: 22px 0; border-top: 1px solid var(--line-soft); color: var(--faint); font-size: .85rem; flex-wrap: wrap; }

/* ---------------------------------------------- responsive */
@media (max-width: 900px) {
  .svc-grid, .cap-grid, .case-grid, .logo-tiles { grid-template-columns: repeat(2, 1fr); }
  .net-wrap, .about-split, .contact-split, .svc-detail { grid-template-columns: 1fr; gap: 32px; }
  .foot-grid { grid-template-columns: 1fr 1fr; }
  .diff-arrow { transform: rotate(90deg); }
  .about-facts { position: static; }
}
@media (max-width: 720px) {
  .main-nav, .nav-cta { display: none; }
  .nav-toggle { display: block; }
  body.nav-open .main-nav {
    display: flex; flex-direction: column; position: fixed; inset: 70px 0 auto 0;
    background: var(--ink-2); border-bottom: 1px solid var(--line); padding: 14px var(--pad); gap: 2px; z-index: 49;
  }
  body.nav-open .main-nav a { padding: 13px 10px; }
  .svc-grid, .cap-grid, .case-grid, .logo-tiles, .field-row, .foot-grid { grid-template-columns: 1fr; }
  .hero-actions { flex-direction: column; align-items: stretch; }
  .hero-actions .btn { justify-content: center; }
}

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

/* reveal-on-scroll */
.reveal { opacity: 0; transform: translateY(18px); transition: opacity .6s ease, transform .6s ease; }
.reveal.in { opacity: 1; transform: none; }