/* ==========================================================================
   MarqOne Technical Consulting — site styles
   Palette is derived from the logo: slate "M" (#848A99) + black wordmark,
   with deep navy-ink for dark surfaces and a single amber accent.
   ========================================================================== */

:root {
  --ink: #0E1726;          /* dark surfaces */
  --ink-2: #16223A;
  --text: #1C2333;
  --muted: #5A6375;
  --slate: #848A99;        /* logo mark */
  --line: #E3E7ED;
  --bg: #FFFFFF;
  --tint: #F4F6F9;
  --accent: #E39A2D;       /* amber: buttons, highlights on dark */
  --accent-strong: #C97F12;
  --accent-text: #9A5F00;  /* accessible amber for text on white */

  --font-display: "Saira Semi Condensed", "Arial Narrow", system-ui, sans-serif;
  --font-body: "IBM Plex Sans", system-ui, -apple-system, "Segoe UI", sans-serif;
  --font-mono: "IBM Plex Mono", ui-monospace, Menlo, monospace;

  --radius: 10px;
  --shadow: 0 1px 2px rgba(14, 23, 38, .06), 0 8px 24px rgba(14, 23, 38, .06);
  --container: 1160px;
  --header-h: 72px;
}

*, *::before, *::after { box-sizing: border-box; }
html { scroll-behavior: smooth; scroll-padding-top: calc(var(--header-h) + 8px); }
body {
  margin: 0;
  background: var(--bg);
  color: var(--text);
  font: 400 1.0625rem/1.65 var(--font-body);
  -webkit-font-smoothing: antialiased;
  text-rendering: optimizeLegibility;
}
img, svg { display: block; max-width: 100%; }
a { color: inherit; }
h1, h2, h3 { font-family: var(--font-display); line-height: 1.1; margin: 0 0 .5em; letter-spacing: -.005em; }
h1 { font-size: clamp(2.4rem, 5.6vw, 4.25rem); font-weight: 800; }
h2 { font-size: clamp(1.9rem, 3.6vw, 2.75rem); font-weight: 700; }
h3 { font-size: 1.35rem; font-weight: 700; }
p { margin: 0 0 1em; }

.container { width: 100%; max-width: var(--container); margin: 0 auto; padding: 0 24px; }
@media (max-width: 600px) { .container { padding: 0 16px; } }

.skip-link {
  position: absolute; left: 16px; top: -48px; z-index: 100;
  background: var(--accent); color: var(--ink); padding: 8px 14px; border-radius: 6px; font-weight: 600;
}
.skip-link:focus { top: 12px; }

:focus-visible { outline: 3px solid var(--accent); outline-offset: 3px; border-radius: 4px; }

/* ---------- Buttons ---------- */
.btn {
  display: inline-flex; align-items: center; justify-content: center; gap: .5em;
  padding: .85em 1.5em; border-radius: 8px; border: 2px solid transparent;
  font: 600 1rem/1 var(--font-body); text-decoration: none; cursor: pointer;
  transition: background-color .2s, border-color .2s, color .2s, transform .2s;
}
.btn:hover { transform: translateY(-1px); }
.btn-accent { background: var(--accent); color: var(--ink); }
.btn-accent:hover { background: var(--accent-strong); }
.btn-ghost { border-color: rgba(255,255,255,.35); color: #fff; }
.btn-ghost:hover { border-color: #fff; background: rgba(255,255,255,.06); }
.btn-sm { padding: .6em 1.1em; font-size: .9375rem; }
.btn-block { width: 100%; }

/* ---------- Header ---------- */
.site-header {
  position: sticky; top: 0; z-index: 50;
  background: rgba(255,255,255,.92);
  backdrop-filter: saturate(1.4) blur(10px);
  -webkit-backdrop-filter: saturate(1.4) blur(10px);
  border-bottom: 1px solid transparent;
  transition: border-color .2s, box-shadow .2s;
}
.site-header.scrolled { border-color: var(--line); box-shadow: 0 4px 18px rgba(14,23,38,.06); }
.header-inner { display: flex; align-items: center; justify-content: space-between; height: var(--header-h); }

.brand { display: flex; align-items: center; gap: 12px; text-decoration: none; }
.brand img { width: 40px; height: auto; }
.brand-text { display: flex; flex-direction: column; line-height: 1; }
.brand-name { font: 800 1.45rem/1 var(--font-display); color: #000; letter-spacing: .01em; text-transform: uppercase; }
.brand-sub { font: 600 .68rem/1 var(--font-display); color: var(--muted); letter-spacing: .16em; text-transform: uppercase; margin-top: 4px; }

.site-nav { display: flex; align-items: center; gap: 28px; }
.site-nav a:not(.btn) {
  text-decoration: none; font-weight: 500; font-size: .975rem; color: var(--text);
  position: relative; padding: 6px 0;
}
.site-nav a:not(.btn)::after {
  content: ""; position: absolute; left: 0; right: 0; bottom: 0; height: 2px;
  background: var(--accent); transform: scaleX(0); transform-origin: left; transition: transform .25s;
}
.site-nav a:not(.btn):hover::after, .site-nav a.active::after { transform: scaleX(1); }

.nav-toggle {
  display: none; width: 44px; height: 44px; border: 0; background: none; cursor: pointer;
  flex-direction: column; justify-content: center; align-items: center; gap: 5px;
}
.nav-toggle span { display: block; width: 24px; height: 2px; background: var(--text); transition: transform .25s, opacity .2s; }
.nav-toggle[aria-expanded="true"] span:nth-child(1) { transform: translateY(7px) rotate(45deg); }
.nav-toggle[aria-expanded="true"] span:nth-child(2) { opacity: 0; }
.nav-toggle[aria-expanded="true"] span:nth-child(3) { transform: translateY(-7px) rotate(-45deg); }

@media (max-width: 860px) {
  .nav-toggle { display: flex; }
  .site-nav {
    position: absolute; top: var(--header-h); left: 0; right: 0;
    flex-direction: column; align-items: stretch; gap: 0;
    background: #fff; border-bottom: 1px solid var(--line); box-shadow: 0 12px 24px rgba(14,23,38,.08);
    padding: 8px 16px 20px;
    display: none;
  }
  .site-nav.open { display: flex; }
  .site-nav a:not(.btn) { padding: 14px 4px; border-bottom: 1px solid var(--line); }
  .site-nav a:not(.btn)::after { display: none; }
  .site-nav .btn { margin-top: 16px; }
}

/* ---------- Hero ---------- */
.hero {
  position: relative; overflow: hidden;
  background: radial-gradient(1200px 600px at 85% -10%, #22345A 0%, transparent 60%), var(--ink);
  color: #fff;
  padding: clamp(72px, 12vw, 140px) 0 48px;
}
.hero-grid {
  position: absolute; inset: 0;
  background-image:
    linear-gradient(rgba(255,255,255,.045) 1px, transparent 1px),
    linear-gradient(90deg, rgba(255,255,255,.045) 1px, transparent 1px);
  background-size: 56px 56px;
  mask-image: linear-gradient(180deg, #000 30%, transparent 95%);
  -webkit-mask-image: linear-gradient(180deg, #000 30%, transparent 95%);
}
.hero-mark {
  position: absolute; right: -6%; top: 50%; transform: translateY(-58%);
  width: min(58vw, 760px); height: auto;
  fill: none; stroke: rgba(132,138,153,.28); stroke-width: 5;
}
.hero-inner { position: relative; max-width: 860px; }
.hero-inner.container { margin-left: max(0px, calc((100% - var(--container)) / 2)); }
.eyebrow {
  font: 500 .8125rem/1.4 var(--font-mono); letter-spacing: .08em; text-transform: uppercase;
  color: var(--accent); margin-bottom: 20px;
}
.hero h1 { color: #fff; max-width: 15ch; }
.hero .hl { color: var(--accent); }
.lead { font-size: clamp(1.075rem, 1.6vw, 1.25rem); color: #C5CCD9; max-width: 60ch; margin: 18px 0 34px; }
.hero-actions { display: flex; flex-wrap: wrap; gap: 14px; }

.stat-strip {
  position: relative; list-style: none; margin: clamp(56px, 9vw, 96px) 0 0; padding: 28px 0 0;
  display: grid; grid-template-columns: repeat(4, 1fr); gap: 24px;
  border-top: 1px solid rgba(255,255,255,.12);
}
.stat-strip li { display: flex; flex-direction: column; gap: 4px; }
.stat-strip strong { font: 700 1.5rem/1.1 var(--font-display); color: #fff; }
.stat-strip span { font-size: .9rem; color: #9AA4B6; }
@media (max-width: 860px) { .stat-strip { grid-template-columns: repeat(2, 1fr); } }

/* ---------- Sections ---------- */
.section { padding: clamp(72px, 10vw, 120px) 0; }
.section-tint { background: var(--tint); }
.section-head { max-width: 720px; margin-bottom: 52px; }
.section-head p:not(.kicker) { color: var(--muted); font-size: 1.1rem; }
.kicker {
  display: inline-flex; align-items: center; gap: 10px;
  font: 500 .8125rem/1 var(--font-mono); letter-spacing: .1em; text-transform: uppercase;
  color: var(--accent-text); margin-bottom: 16px;
}
.kicker::before { content: ""; width: 24px; height: 2px; background: currentColor; }

/* ---------- Services ---------- */
.service-grid { display: grid; grid-template-columns: repeat(3, 1fr); gap: 24px; }
@media (max-width: 1000px) { .service-grid { grid-template-columns: repeat(2, 1fr); } }
@media (max-width: 640px)  { .service-grid { grid-template-columns: 1fr; } }

.service-card {
  background: #fff; border: 1px solid var(--line); border-radius: var(--radius);
  padding: 32px 28px; display: flex; flex-direction: column;
  transition: border-color .25s, box-shadow .25s, transform .25s;
}
.service-card:hover { border-color: #CBD2DC; box-shadow: var(--shadow); transform: translateY(-3px); }
.service-card p { color: var(--muted); font-size: 1rem; }
.service-icon {
  width: 52px; height: 52px; border-radius: 10px; margin-bottom: 22px;
  display: grid; place-items: center; background: var(--ink);
}
.service-icon svg { width: 26px; height: 26px; fill: none; stroke: var(--accent); stroke-width: 1.6; stroke-linecap: round; stroke-linejoin: round; }

.ticks { list-style: none; padding: 16px 0 0; margin: auto 0 0; border-top: 1px solid var(--line); }
.ticks li { position: relative; padding-left: 22px; font-size: .9375rem; margin: 6px 0; }
.ticks li::before {
  content: ""; position: absolute; left: 2px; top: .55em; width: 9px; height: 5px;
  border-left: 2px solid var(--slate); border-bottom: 2px solid var(--slate); transform: rotate(-45deg);
}

.service-card-cta { background: var(--ink); border-color: var(--ink); color: #fff; justify-content: center; }
.service-card-cta:hover { border-color: var(--ink); }
.service-card-cta p { color: #B9C2D2; }
.service-card-cta .btn { align-self: flex-start; margin-top: 8px; }

/* ---------- Approach ---------- */
.steps { list-style: none; padding: 0; margin: 0; display: grid; grid-template-columns: repeat(4, 1fr); gap: 0; counter-reset: s; }
.steps li { position: relative; padding: 28px 28px 8px 0; border-top: 2px solid var(--line); }
.steps li::before {
  content: ""; position: absolute; top: -2px; left: 0; width: 48px; height: 2px; background: var(--accent);
}
.step-num { display: block; font: 500 .875rem/1 var(--font-mono); color: var(--slate); margin-bottom: 14px; }
.steps p { color: var(--muted); font-size: 1rem; }
@media (max-width: 900px) { .steps { grid-template-columns: repeat(2, 1fr); column-gap: 24px; } }
@media (max-width: 560px) { .steps { grid-template-columns: 1fr; } }

/* ---------- Work ---------- */
.case-grid { display: grid; grid-template-columns: repeat(2, 1fr); gap: 24px; }
@media (max-width: 820px) { .case-grid { grid-template-columns: 1fr; } }
.case {
  border: 1px solid var(--line); border-radius: var(--radius); padding: 36px 32px;
  background: linear-gradient(180deg, #fff 0%, #FAFBFC 100%);
}
.case-tag { font: 500 .78rem/1 var(--font-mono); letter-spacing: .06em; text-transform: uppercase; color: var(--slate); margin-bottom: 14px; }
.case h3 { font-size: 1.6rem; margin-bottom: 20px; }
.case dl { margin: 0; }
.case dt { font-weight: 600; font-size: .875rem; text-transform: uppercase; letter-spacing: .06em; color: var(--text); }
.case dd { margin: 4px 0 18px; color: var(--muted); }
.case-result {
  margin: 8px 0 0; padding: 16px 18px; border-left: 3px solid var(--accent);
  background: #FFF8EC; border-radius: 0 8px 8px 0; font-size: .975rem;
}

/* ---------- About ---------- */
.section-dark { background: var(--ink); color: #fff; }
.section-dark .kicker { color: var(--accent); }
.about-grid { display: grid; grid-template-columns: 1.15fr 1fr; gap: clamp(40px, 6vw, 88px); align-items: start; }
.about-copy p:not(.kicker) { color: #C5CCD9; font-size: 1.075rem; }
.pillars { list-style: none; margin: 0; padding: 0; display: grid; gap: 16px; }
.pillars li { background: var(--ink-2); border: 1px solid rgba(255,255,255,.08); border-radius: var(--radius); padding: 24px 26px; }
.pillars h3 { font-size: 1.2rem; color: #fff; margin-bottom: 6px; }
.pillars p { margin: 0; color: #9AA4B6; font-size: .975rem; }
@media (max-width: 860px) { .about-grid { grid-template-columns: 1fr; } }

/* ---------- Contact ---------- */
.contact-grid { display: grid; grid-template-columns: 1fr 1.1fr; gap: clamp(40px, 6vw, 88px); align-items: start; }
@media (max-width: 860px) { .contact-grid { grid-template-columns: 1fr; } }
.contact-copy > p:not(.kicker) { color: var(--muted); font-size: 1.1rem; }
.contact-list { list-style: none; padding: 0; margin: 28px 0 0; display: grid; gap: 14px; }
.contact-list li { display: grid; gap: 2px; }
.contact-list span { font: 500 .75rem/1.2 var(--font-mono); letter-spacing: .08em; text-transform: uppercase; color: var(--slate); }
.contact-list a { color: var(--text); font-weight: 600; text-decoration-color: var(--accent); text-underline-offset: 3px; }

.contact-form {
  background: var(--tint); border: 1px solid var(--line); border-radius: 14px; padding: clamp(24px, 4vw, 36px);
  display: grid; gap: 18px;
}
.field-row { display: grid; grid-template-columns: 1fr 1fr; gap: 18px; }
@media (max-width: 520px) { .field-row { grid-template-columns: 1fr; } }
.contact-form label { display: grid; gap: 6px; font-weight: 600; font-size: .9rem; }
.contact-form input, .contact-form select, .contact-form textarea {
  width: 100%; font: 400 1rem/1.4 var(--font-body); color: var(--text);
  background: #fff; border: 1px solid #CDD4DE; border-radius: 8px; padding: 12px 14px;
  transition: border-color .2s, box-shadow .2s;
}
.contact-form textarea { resize: vertical; min-height: 120px; }
.contact-form input:focus, .contact-form select:focus, .contact-form textarea:focus {
  outline: none; border-color: var(--accent-strong); box-shadow: 0 0 0 3px rgba(227,154,45,.25);
}
.contact-form .invalid { border-color: #C23B3B; }
.form-note { margin: 0; font-size: .9rem; color: var(--muted); min-height: 1.4em; }
.form-note.success { color: #1E7A46; font-weight: 600; }
.form-note.error { color: #B42318; font-weight: 600; }
.contact-form button[disabled] { opacity: .65; cursor: progress; transform: none; }
.hp { position: absolute !important; left: -10000px; width: 1px; height: 1px; overflow: hidden; }

/* ---------- Footer ---------- */
.site-footer { background: #0A111D; color: #9AA4B6; padding: 56px 0 40px; }
.footer-inner { display: grid; grid-template-columns: auto 1fr; gap: 24px 48px; align-items: center; }
.footer-logo { width: 120px; height: auto; filter: brightness(0) invert(1); opacity: .9; }
.footer-nav { display: flex; flex-wrap: wrap; gap: 8px 28px; justify-content: flex-end; }
.footer-nav a { text-decoration: none; color: #C5CCD9; font-size: .95rem; }
.footer-nav a:hover { color: var(--accent); }
.footer-contact { grid-column: 1 / -1; margin: 0; display: flex; flex-wrap: wrap; gap: 8px 28px; }
.footer-contact a { color: #fff; font-weight: 600; text-decoration: none; }
.footer-contact a:hover { color: var(--accent); }
.copyright { grid-column: 1 / -1; margin: 16px 0 0; padding-top: 24px; border-top: 1px solid rgba(255,255,255,.08); font-size: .875rem; }
@media (max-width: 640px) {
  .footer-inner { grid-template-columns: 1fr; }
  .footer-nav { justify-content: flex-start; }
}

/* ---------- Motion ---------- */
.js .reveal { opacity: 0; transform: translateY(16px); transition: opacity .6s ease, transform .6s ease; }
.js .reveal.in { opacity: 1; transform: none; }
@media (prefers-reduced-motion: reduce) {
  html { scroll-behavior: auto; }
  .js .reveal { opacity: 1; transform: none; transition: none; }
  .btn:hover, .service-card:hover { transform: none; }
}