/* ==========================================================================
   Ironguard IT — Design System
   Source: Ironguard Brand & Website Blueprint, Section 2 (Visual Identity)
   Palette: Carbon / Iron / Forge Orange / Deep Ember / Cloud / Steel / Signal Green
   Type: Sora (headlines) · Inter (body) · IBM Plex Mono (technical labels)
   Spacing: 8-pt system (8 / 16 / 24 / 32 / 48 / 64 / 96)
   ========================================================================== */

:root {
  /* Color palette (blueprint hex values + color-psychology roles)
     Carbon (near-black) = authority/sophistication · Steel (gray) = professionalism
     Trust (blue) = trust/security/intelligence — the tech-sector anchor
     Forge/Ember (orange) = energy + attention, reserved for CTAs and emphasis */
  --carbon: #0E1B2A;
  --iron: #2E4358;       /* secondary panels, shifted toward trust blue */
  --forge: #E4572E;
  --ember: #A93817;      /* accessible CTA fill + small orange text */
  --cloud: #F6F7F8;
  --steel: #AAB4BE;
  --signal: #1F7A50;     /* success / healthy state ONLY */
  --trust: #2C5F8A;      /* trust blue: inline links, security accents (AA on Cloud) */
  --trust-light: #8FBEE3;/* trust blue for dark surfaces */

  --white: #ffffff;
  --ink: var(--carbon);
  --ink-soft: #3d4650;

  /* Type */
  --font-head: 'Sora', 'Avenir Next', 'Segoe UI', sans-serif;
  --font-body: 'Inter', 'Helvetica Neue', Arial, sans-serif;
  --font-mono: 'IBM Plex Mono', 'SF Mono', Menlo, monospace;

  /* 8-pt spacing scale */
  --s1: 8px;  --s2: 16px; --s3: 24px; --s4: 32px;
  --s5: 48px; --s6: 64px; --s7: 96px;

  /* Section rhythm: 80–112px desktop, 48–72px mobile (blueprint) */
  --section-y: 96px;
  --content-max: 1240px;   /* cap 1200–1280px */
  --radius-card: 16px;     /* cards 16–20px */
  --radius-btn: 10px;      /* buttons 10–12px */
}

/* --- Reset / base ------------------------------------------------------- */
*, *::before, *::after { box-sizing: border-box; }
html { scroll-behavior: smooth; }
@media (prefers-reduced-motion: reduce) { html { scroll-behavior: auto; } }

body {
  margin: 0;
  font-family: var(--font-body);
  font-size: 17px;          /* body stays ≥16px */
  line-height: 1.6;
  color: var(--ink);
  background: var(--cloud);
  -webkit-font-smoothing: antialiased;
}

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

h1, h2, h3, h4 {
  font-family: var(--font-head);
  font-weight: 600;
  line-height: 1.15;
  margin: 0 0 var(--s3);
  letter-spacing: -0.01em;
}
h1 { font-size: clamp(34px, 5vw, 56px); font-weight: 700; }
h2 { font-size: clamp(28px, 3.6vw, 40px); }
h3 { font-size: clamp(20px, 2.2vw, 24px); }
p  { margin: 0 0 var(--s2); max-width: 68ch; }

a { color: var(--trust); }          /* inline links: trust blue */
.on-dark a:not(.btn) { color: var(--trust-light); }
.label a, a.label { color: var(--ember); }
a:focus-visible, button:focus-visible, summary:focus-visible,
input:focus-visible, textarea:focus-visible {
  outline: 3px solid var(--forge);
  outline-offset: 2px;
}

.container {
  max-width: var(--content-max);
  margin: 0 auto;
  padding: 0 24px;
}
@media (min-width: 768px)  { .container { padding: 0 40px; } }
@media (min-width: 1024px) { .container { padding: 0 64px; } }

section { padding: var(--section-y) 0; }
@media (max-width: 767px) { :root { --section-y: 60px; } }

/* Technical label — IBM Plex Mono status text (blueprint graphic element) */
.label {
  font-family: var(--font-mono);
  font-weight: 500;
  font-size: 13px;
  letter-spacing: 0.14em;
  text-transform: uppercase;
  color: var(--ember);
  display: inline-block;
  margin-bottom: var(--s2);
}
.on-dark .label { color: var(--forge); }

/* Structural frame motif — open bracket pulled from the logo system */
.framed {
  position: relative;
  padding-left: var(--s3);
}
.framed::before {
  content: "";
  position: absolute;
  left: 0; top: 4px; bottom: 4px;
  width: 12px;
  border: 2px solid var(--forge);
  border-right: none;
}

/* --- Buttons (blueprint UI system) -------------------------------------- */
.btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  white-space: nowrap;
  min-height: 50px;                 /* 48–52px */
  padding: 0 var(--s4);
  border-radius: var(--radius-btn);
  font-family: var(--font-head);
  font-weight: 600;
  font-size: 16px;
  text-decoration: none;
  border: 2px solid transparent;
  cursor: pointer;
  transition: background-color 150ms ease, transform 150ms ease,
              border-color 150ms ease, color 150ms ease;  /* 120–180ms */
}
.btn:active { transform: translateY(1px); }

.btn-primary { background: var(--ember); color: var(--white); }
.btn-primary:hover { background: #8f2e12; transform: translateY(-1px); }

.btn-secondary { background: transparent; color: var(--carbon); border-color: var(--carbon); }
.btn-secondary:hover { background: var(--carbon); color: var(--cloud); transform: translateY(-1px); }

.on-dark .btn-secondary { color: var(--cloud); border-color: var(--steel); }
.on-dark .btn-secondary:hover { background: var(--cloud); color: var(--carbon); }

@media (prefers-reduced-motion: reduce) {
  .btn, .btn:hover, .btn:active { transition: none; transform: none; }
}

/* --- Header / navigation ------------------------------------------------- */
.site-header {
  position: sticky;
  top: 0;
  z-index: 50;
  background: var(--carbon);
  border-bottom: 1px solid rgba(170, 180, 190, 0.25);
}
.header-inner {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: var(--s3);
  min-height: 72px;
}
.brand {
  display: inline-flex;
  align-items: center;
  gap: 12px;
  text-decoration: none;
  color: var(--cloud);
}
.brand-name {
  font-family: var(--font-head);
  font-weight: 600;
  font-size: 19px;
  letter-spacing: 0.02em;
  white-space: nowrap;
}
.brand-name span { color: var(--steel); font-weight: 400; }

.nav-desktop { display: none; }
@media (min-width: 1200px) {
  .nav-desktop { display: flex; align-items: center; gap: var(--s3); }
}
.nav-desktop a:not(.btn) {
  position: relative;
  color: var(--cloud);
  text-decoration: none;
  font-size: 15px;
  font-weight: 500;
  padding: 6px 0;
  white-space: nowrap;
}
/* Nav underline grows from the active edge (blueprint interaction) */
.nav-desktop a:not(.btn)::after {
  content: "";
  position: absolute;
  left: 0; bottom: 0;
  height: 2px; width: 0;
  background: var(--forge);
  transition: width 180ms ease;
}
.nav-desktop a:not(.btn):hover::after,
.nav-desktop a:not(.btn)[aria-current="page"]::after { width: 100%; }
.nav-support { color: var(--steel) !important; }

.nav-toggle {
  display: inline-flex;
  align-items: center;
  gap: 10px;
  background: none;
  border: 1px solid var(--iron);
  border-radius: 8px;
  color: var(--cloud);
  font-family: var(--font-mono);
  font-size: 13px;
  letter-spacing: 0.1em;
  padding: 12px 16px;
  min-height: 44px;
  cursor: pointer;
}
@media (min-width: 1200px) { .nav-toggle { display: none; } }

.nav-mobile {
  display: none;
  background: var(--carbon);
  border-top: 1px solid var(--iron);
  padding: var(--s2) 0 var(--s3);
}
.nav-mobile.open { display: block; }
.nav-mobile a {
  display: block;
  color: var(--cloud);
  text-decoration: none;
  font-size: 18px;
  font-weight: 500;
  padding: 14px 0;                 /* ≥44px tap targets */
  border-bottom: 1px solid rgba(52, 64, 75, 0.6);
}
.nav-mobile .btn { margin-top: var(--s2); width: 100%; border-bottom: none; }
body.menu-open { overflow: hidden; }   /* lock background scroll */

@media (prefers-reduced-motion: no-preference) {
  .nav-mobile.open { animation: menuIn 200ms ease; }  /* under 220ms */
  @keyframes menuIn { from { opacity: 0; transform: translateY(-6px); } }
}

/* --- Hero ---------------------------------------------------------------- */
.hero {
  background: var(--carbon);
  color: var(--cloud);
  padding: clamp(64px, 9vw, 112px) 0;
  position: relative;
  overflow: hidden;
}
/* Subtle topology grid at low contrast — never a busy “cyber” background */
.hero::before {
  content: "";
  position: absolute;
  inset: 0;
  background-image:
    linear-gradient(rgba(170,180,190,0.06) 1px, transparent 1px),
    linear-gradient(90deg, rgba(170,180,190,0.06) 1px, transparent 1px);
  background-size: 48px 48px;
  pointer-events: none;
}
.hero .container { position: relative; }
.hero-grid {
  display: grid;
  gap: var(--s5);
  align-items: center;
}
@media (min-width: 1024px) {
  .hero-grid { grid-template-columns: minmax(0, 1.1fr) minmax(0, 0.9fr); }
}
.hero h1 { color: var(--white); margin-bottom: var(--s3); max-width: 15ch; }
.hero .lede { font-size: 19px; color: #d7dce1; max-width: 56ch; }
.hero-actions {
  display: flex;
  flex-wrap: wrap;
  gap: var(--s2);
  margin-top: var(--s4);
}
.hero-support {
  margin-top: var(--s3);
  font-family: var(--font-mono);
  font-size: 13.5px;
  letter-spacing: 0.08em;
  color: var(--steel);
}
.hero-visual { min-width: 0; }

/* Routing-line diagram (placeholder for real operational photography) */
.routing-note {
  font-family: var(--font-mono);
  font-size: 12px;
  letter-spacing: 0.12em;
  color: var(--steel);
  margin-top: var(--s1);
  text-align: right;
}

/* --- Proof strip ---------------------------------------------------------- */
.proof-strip {
  background: var(--iron);
  color: var(--cloud);
  padding: var(--s3) 0;
}
.proof-strip ul {
  list-style: none;
  margin: 0;
  padding: 0;
  display: flex;
  flex-wrap: wrap;
  gap: var(--s2) var(--s4);
  justify-content: space-between;
  align-items: center;
}
.proof-strip li {
  font-family: var(--font-mono);
  font-size: 13px;
  letter-spacing: 0.14em;
}
.proof-strip li b { color: var(--white); font-weight: 500; }
.proof-strip li::before { content: "// "; color: var(--forge); }

/* --- Cards (blueprint UI system) ----------------------------------------- */
.card-grid {
  display: grid;
  gap: var(--s3);
  grid-template-columns: 1fr;
}
@media (min-width: 768px)  { .card-grid { grid-template-columns: repeat(2, 1fr); } }
@media (min-width: 1100px) { .card-grid.cols-3 { grid-template-columns: repeat(3, 1fr); } }

.card {
  background: var(--white);
  border: 1px solid var(--steel);
  border-radius: var(--radius-card);
  padding: var(--s4);               /* 24–32px internal padding */
  transition: border-color 160ms ease;
}
.card:hover { border-color: var(--forge); }  /* Steel → Forge on hover */
.card h3 { margin-bottom: var(--s1); font-size: 20px; }
.card p { margin: 0; font-size: 16px; color: var(--ink-soft); }

.card-icon {
  width: 40px; height: 40px;
  margin-bottom: var(--s2);
  color: var(--iron);
  transition: transform 160ms ease, color 160ms ease;
}
.card:hover .card-icon { transform: translateX(3px); color: var(--ember); }  /* icon shifts 2–4px */
@media (prefers-reduced-motion: reduce) {
  .card, .card-icon, .card:hover .card-icon { transition: none; transform: none; }
}

/* --- Dark sections -------------------------------------------------------- */
.on-dark { background: var(--carbon); color: var(--cloud); }
.on-dark h2, .on-dark h3 { color: var(--white); }
.on-dark p { color: #ccd3d9; }
.on-dark .card { background: rgba(52, 64, 75, 0.35); border-color: var(--iron); }
.on-dark .card:hover { border-color: var(--forge); }
.on-dark .card h3 { color: var(--white); }
.on-dark .card p { color: #c3cad1; }

/* --- Problem list ---------------------------------------------------------- */
.fail-list {
  list-style: none;
  margin: var(--s4) 0 0;
  padding: 0;
  display: grid;
  gap: var(--s2);
}
.fail-list li {
  position: relative;
  padding-left: var(--s4);
  max-width: 62ch;
}
.fail-list li::before {
  content: "";
  position: absolute;
  left: 0; top: 9px;
  width: 14px; height: 8px;
  border: 2px solid var(--forge);
  border-right: none;
  border-bottom: none;
}

/* --- Difference rows ------------------------------------------------------- */
.diff-grid {
  display: grid;
  gap: var(--s3);
  grid-template-columns: 1fr;
}
@media (min-width: 768px) { .diff-grid { grid-template-columns: repeat(2, 1fr); } }
@media (min-width: 1100px) { .diff-grid { grid-template-columns: repeat(3, 1fr); } }
.diff-item {
  border-left: 2px solid var(--iron);
  padding-left: var(--s3);
  transition: border-color 160ms ease;
}
.diff-item:hover { border-color: var(--forge); }
.diff-item h3 { font-size: 19px; margin-bottom: 6px; }
.diff-item p { font-size: 16px; margin: 0; }

/* --- Process --------------------------------------------------------------- */
.process-grid {
  display: grid;
  gap: var(--s3);
  grid-template-columns: 1fr;
  counter-reset: step;
}
@media (min-width: 768px) { .process-grid { grid-template-columns: repeat(2, 1fr); } }
@media (min-width: 1100px) { .process-grid { grid-template-columns: repeat(4, 1fr); } }
.process-step { position: relative; padding-top: var(--s5); }
.process-step::before {
  counter-increment: step;
  content: "0" counter(step);
  position: absolute;
  top: 0; left: 0;
  font-family: var(--font-mono);
  font-weight: 500;
  font-size: 28px;
  color: var(--forge);
}
.process-step h3 { font-size: 19px; margin-bottom: var(--s1); }
.process-step p { font-size: 16px; margin: 0; }

/* --- Founder note ------------------------------------------------------------ */
.founder {
  display: grid;
  gap: var(--s4);
  align-items: start;
}
@media (min-width: 900px) { .founder { grid-template-columns: 320px 1fr; } }
.founder img {
  border-radius: 16px;
  border: 1px solid var(--steel);
}
@media (max-width: 899px) {
  /* single-column layout: keep the portrait a portrait, not a billboard */
  .founder img { max-width: 280px; }
}

.founder-name {
  font-family: var(--font-mono);
  font-size: 13px;
  letter-spacing: 0.12em;
  color: var(--ember);
  margin-top: var(--s2);
}

/* --- FAQ ---------------------------------------------------------------------- */
.faq details {
  border: 1px solid var(--steel);
  border-radius: 12px;
  background: var(--white);
  margin-bottom: var(--s2);
}
.faq summary {
  cursor: pointer;
  list-style: none;
  padding: 18px var(--s3);
  font-family: var(--font-head);
  font-weight: 600;
  font-size: 17px;
  display: flex;
  justify-content: space-between;
  align-items: center;
  gap: var(--s2);
  min-height: 44px;
}
.faq summary::-webkit-details-marker { display: none; }
.faq summary::after {
  content: "+";
  font-family: var(--font-mono);
  color: var(--ember);
  font-size: 20px;
  flex-shrink: 0;
}
.faq details[open] summary::after { content: "–"; }
.faq details > p { padding: 0 var(--s3) var(--s3); margin: 0; color: var(--ink-soft); }

/* --- Contact / final CTA --------------------------------------------------------- */
.contact-grid {
  display: grid;
  gap: var(--s5);
}
@media (min-width: 1024px) { .contact-grid { grid-template-columns: 1fr 1fr; } }

.form-field { margin-bottom: var(--s3); }
.form-field label {
  display: block;
  font-family: var(--font-head);
  font-weight: 600;
  font-size: 15px;
  margin-bottom: var(--s1);
  color: var(--white);
}
.form-field input,
.form-field select,
.form-field textarea {
  width: 100%;
  padding: 14px 16px;
  font-family: var(--font-body);
  font-size: 16px;
  color: var(--carbon);
  background: var(--cloud);
  border: 1px solid var(--steel);
  border-radius: 10px;
  min-height: 48px;
}
.form-field textarea { min-height: 128px; resize: vertical; }
.form-field .error-msg {
  display: none;
  font-size: 14px;
  color: var(--forge);
  margin-top: 6px;
}
.form-field.invalid input,
.form-field.invalid textarea { border-color: var(--forge); }
.form-field.invalid .error-msg { display: block; }

.form-status {
  display: none;
  margin-top: var(--s3);
  padding: var(--s2) var(--s3);
  border-radius: 10px;
  font-size: 15.5px;
}
.form-status.success {
  display: block;
  background: rgba(31, 122, 80, 0.15);
  border: 1px solid var(--signal);
  color: #9fdcbe;
}

/* --- Footer -------------------------------------------------------------------- */
.site-footer {
  background: var(--carbon);
  color: var(--steel);
  padding: var(--s5) 0;
  border-top: 1px solid var(--iron);
  font-size: 15px;
}
.footer-grid {
  display: grid;
  gap: var(--s4);
}
@media (min-width: 768px) {
  .footer-grid { grid-template-columns: 2fr 1fr 1fr; align-items: start; }
  .footer-grid.cols-4 { grid-template-columns: 2fr 1fr 1fr 1fr; }
}

/* --- Pricing metric block (blueprint UI system: large Sora number, mono label) ---- */
.price-block {
  display: flex;
  flex-wrap: wrap;
  gap: var(--s5);
  align-items: flex-start;
  margin-top: var(--s4);
}
.price-figure .amount {
  font-family: var(--font-head);
  font-weight: 700;
  font-size: clamp(56px, 7vw, 88px);
  line-height: 1;
  letter-spacing: -0.02em;
}
.price-figure .amount sup { font-size: 0.45em; font-weight: 600; }
.price-figure .per {
  font-family: var(--font-mono);
  font-weight: 500;
  font-size: 13px;
  letter-spacing: 0.14em;
  text-transform: uppercase;
  color: var(--ember);
  margin-top: var(--s1);
}
.price-lists {
  display: grid;
  gap: var(--s3);
  flex: 1;
  min-width: min(100%, 480px);
}
@media (min-width: 900px) { .price-lists { grid-template-columns: 1fr 1fr; } }
.price-lists h3 { font-size: 17px; margin-bottom: var(--s1); }
.price-lists ul { list-style: none; margin: 0; padding: 0; display: grid; gap: 8px; }
.price-lists li {
  position: relative;
  padding-left: 24px;
  font-size: 15.5px;
  color: var(--ink-soft);
}
.price-lists li::before {
  content: "";
  position: absolute;
  left: 0; top: 8px;
  width: 10px; height: 6px;
  border: 2px solid var(--forge);
  border-right: none;
  border-bottom: none;
}

/* --- Article prose --------------------------------------------------------------- */
.article-body h3 {
  margin-top: var(--s5);
  font-size: 21px;
}
.article-body p { font-size: 17.5px; line-height: 1.7; }
.site-footer a { color: var(--cloud); text-decoration: none; }
.site-footer a:hover { color: var(--forge); }
.site-footer ul { list-style: none; margin: 0; padding: 0; display: grid; gap: 10px; }
.footer-tagline {
  font-family: var(--font-head);
  color: var(--cloud);
  font-weight: 600;
  margin: var(--s2) 0 var(--s1);
}
.footer-legal {
  margin-top: var(--s4);
  padding-top: var(--s3);
  border-top: 1px solid rgba(52,64,75,0.6);
  font-size: 13.5px;
  display: flex;
  flex-wrap: wrap;
  gap: var(--s2);
  justify-content: space-between;
}

/* --- Section reveal (blueprint: 8–16px fade, 220–320ms, once) -------------------- */
@media (prefers-reduced-motion: no-preference) {
  .reveal {
    opacity: 0;
    transform: translateY(12px);
    transition: opacity 280ms ease, transform 280ms ease;
  }
  .reveal.in { opacity: 1; transform: none; }
}

/* --- Utilities -------------------------------------------------------------------- */
.section-intro { max-width: 720px; margin-bottom: var(--s5); }
.center { text-align: center; }
.center p, .center h2 { margin-left: auto; margin-right: auto; }
.visually-hidden {
  position: absolute;
  width: 1px; height: 1px;
  clip-path: inset(50%);
  overflow: hidden;
  white-space: nowrap;
}
.skip-link {
  position: absolute;
  left: -9999px;
  top: 0;
  background: var(--ember);
  color: var(--white);
  padding: 12px 20px;
  z-index: 100;
}
.skip-link:focus { left: 0; }