/* ============================================================
   Zyvra Studio — stylesheet
   Editorial security-review design: paper background, serif body
   copy, mono labels/data, dashed section rules. Dark only.
   ============================================================ */

:root {
  color-scheme: dark;

  --paper:   #070B16;
  --surface: #0F1830;
  --ink:     #E8EDF7;
  --ink-soft:#8792AC;
  --rule:    #263252;
  --rule-solid: #1A2440;
  --accent:  #4FD8FF;
  --accent-soft: #102A42;
  --flag:    #FF9F5B;
  --flag-soft: #2A1C12;
  --error:   #FF9F5B;

  --fs-xs: 0.72rem;
  --fs-sm: 0.875rem;
  --fs-base: 1.0625rem;
  --fs-lg: 1.25rem;
  --fs-xl: 1.6rem;
  --fs-2xl: 2.2rem;

  --display: "Chivo", "Helvetica Neue", Arial, sans-serif;
  --body: "Source Serif 4", Georgia, "Times New Roman", serif;
  --mono: "IBM Plex Mono", ui-monospace, "SFMono-Regular", Menlo, monospace;

  --radius: 2px;
  --ease: cubic-bezier(0.22, 1, 0.36, 1);
}

/* Cyber-themed background: a faint circuit grid across the page,
   plus a soft glow behind the hero. */
body {
  background-image:
    linear-gradient(color-mix(in srgb, var(--accent) 8%, transparent) 1px, transparent 1px),
    linear-gradient(90deg, color-mix(in srgb, var(--accent) 8%, transparent) 1px, transparent 1px);
  background-size: 44px 44px;
}
.hero {
  background-image: radial-gradient(120% 100% at 25% -20%, color-mix(in srgb, var(--accent) 16%, transparent), transparent 62%);
}

/* ============================================================
   Base
   ============================================================ */
*, *::before, *::after { box-sizing: border-box; }

html {
  scroll-behavior: smooth;
  scroll-padding-top: 24px;
}

body {
  margin: 0;
  background: var(--paper);
  color: var(--ink);
  font-family: var(--body);
  font-size: var(--fs-base);
  line-height: 1.6;
  -webkit-font-smoothing: antialiased;
  transition: background-color 0.25s var(--ease), color 0.25s var(--ease);
}

h1, h2, h3, h4, p, ol, ul, dl, dd, figure { margin: 0; }
ol, ul { padding: 0; list-style: none; }
img { max-width: 100%; display: block; }

a { color: var(--accent); text-decoration-thickness: 1px; text-underline-offset: 3px; }
a:focus-visible, button:focus-visible {
  outline: 2px solid var(--accent);
  outline-offset: 3px;
}

.wrap {
  max-width: 1060px;
  margin: 0 auto;
  padding-inline: 24px;
}

/* ---------- shared type ---------- */
.eyebrow {
  font-family: var(--mono);
  font-size: var(--fs-xs);
  letter-spacing: 0.14em;
  text-transform: uppercase;
  color: var(--ink-soft);
  margin: 0;
}
.eyebrow.accent { color: var(--accent); }

h1, h2, h3, h4 {
  font-family: var(--display);
  text-wrap: balance;
  margin: 0;
  line-height: 1.12;
  letter-spacing: -0.015em;
}
h1 { font-weight: 900; font-size: clamp(2.1rem, 5.6vw, 3.5rem); }
h2 { font-weight: 700; font-size: var(--fs-2xl); }
h3 { font-weight: 700; font-size: var(--fs-lg); letter-spacing: -0.005em; }

.prose { max-width: 62ch; }
.lede { font-size: var(--fs-lg); line-height: 1.5; }
.soft { color: var(--ink-soft); }

/* ============================================================
   Header
   ============================================================ */
header.top {
  position: sticky;
  top: 0;
  z-index: 40;
  background: var(--paper);
  border-bottom: 1px solid var(--rule-solid);
}
.top-inner {
  display: flex;
  flex-wrap: wrap;
  gap: 12px 20px;
  align-items: baseline;
  justify-content: space-between;
  padding-block: 18px;
}
.wordmark {
  display: inline-flex;
  align-items: center;
  gap: 9px;
  font-family: var(--display);
  font-weight: 900;
  font-size: 1rem;
  letter-spacing: -0.01em;
  color: var(--ink);
  text-decoration: none;
}
.wordmark span { color: var(--accent); }
.wordmark__badge {
  max-width: 100%;
  display: inline-flex;
  align-items: center;
  justify-content: center;
  padding: 4px 8px;
  border-radius: var(--radius);
  background: #0A1622;
  border: 1px solid var(--rule-solid);
}
.wordmark__mark { height: 68px; width: auto; max-width: 100%; display: block; }
.top-right { display: flex; align-items: center; gap: 16px; }

/* ============================================================
   Structure
   ============================================================ */
section { padding-block: 60px; }
section + section { border-top: 1px dashed var(--rule); }

.section-head {
  display: flex;
  flex-direction: column;
  gap: 14px;
  margin-bottom: 36px;
}

/* ============================================================
   Hero
   ============================================================ */
.hero { padding-block: 64px 56px; }
.hero-grid {
  display: grid;
  gap: 44px;
  grid-template-columns: minmax(0, 1.05fr) minmax(0, 0.95fr);
  align-items: center;
}
.hero-copy { display: flex; flex-direction: column; gap: 22px; }

.constraints {
  display: flex;
  flex-wrap: wrap;
  gap: 8px;
}
.constraints li {
  font-family: var(--mono);
  font-size: var(--fs-xs);
  letter-spacing: 0.04em;
  padding: 5px 10px;
  border: 1px solid var(--rule);
  border-radius: var(--radius);
  color: var(--ink-soft);
}

.cta-row { display: flex; flex-wrap: wrap; gap: 12px; align-items: center; }
.btn {
  font-family: var(--display);
  font-weight: 700;
  font-size: var(--fs-sm);
  letter-spacing: 0.01em;
  padding: 13px 20px;
  border: 1px solid var(--accent);
  border-radius: var(--radius);
  background: var(--accent);
  color: var(--paper);
  text-decoration: none;
  display: inline-block;
  cursor: pointer;
  transition: background-color 0.2s var(--ease), color 0.2s var(--ease);
}
.btn.ghost { background: transparent; color: var(--accent); }
.btn.ghost:hover { background: var(--accent-soft); }
.btn:disabled { opacity: 0.6; cursor: default; }
.btn.small { padding: 8px 14px; font-size: var(--fs-xs); }

/* ---------- diagram ---------- */
figure.diagram { display: flex; flex-direction: column; gap: 10px; }
.diagram svg { width: 100%; height: auto; display: block; }
.n-box { fill: var(--surface); stroke: var(--rule); stroke-width: 1.5; }
.n-box.flagged { stroke: var(--flag); stroke-width: 2; fill: var(--flag-soft); }
.n-label { font-family: var(--mono); font-size: 16px; font-weight: 500; fill: var(--ink); }
.n-cap { font-family: var(--mono); font-size: 12px; letter-spacing: 0.08em; fill: var(--ink-soft); }
.boundary { stroke: var(--accent); stroke-width: 1.75; stroke-dasharray: 6 6; fill: none; }
.boundary.anim { animation: drift 3.5s linear infinite; }
@keyframes drift { to { stroke-dashoffset: -24; } }
.flow { stroke: var(--ink-soft); stroke-width: 1.75; fill: none; }
.arrowhead { fill: var(--ink-soft); }
.b-label { font-family: var(--mono); font-size: 12px; font-weight: 500; letter-spacing: 0.08em; fill: var(--accent); }
.callout { font-family: var(--mono); font-size: 13px; fill: var(--flag); }
.callout-line { stroke: var(--flag); stroke-width: 1.5; stroke-dasharray: 3 4; fill: none; }
.flag-dot { fill: var(--flag); }
.flag-mark { font-family: var(--display); font-size: 15px; font-weight: 900; fill: var(--paper); }
figcaption {
  font-family: var(--mono);
  font-size: var(--fs-xs);
  color: var(--ink-soft);
  line-height: 1.5;
}

/* ---------- failure list ---------- */
.failures { display: flex; flex-direction: column; gap: 0; }
.failure {
  display: grid;
  grid-template-columns: 200px minmax(0, 1fr);
  gap: 10px 32px;
  padding-block: 22px;
  border-top: 1px solid var(--rule-solid);
}
.failure:last-child { border-bottom: 1px solid var(--rule-solid); }
.failure dt {
  font-family: var(--mono);
  font-size: var(--fs-xs);
  letter-spacing: 0.12em;
  text-transform: uppercase;
  color: var(--accent);
  padding-top: 4px;
}
.failure dd { max-width: 60ch; color: var(--ink); }

/* ---------- sample finding ---------- */
.finding {
  background: var(--surface);
  border: 1px solid var(--rule-solid);
  border-left: 4px solid var(--flag);
  border-radius: var(--radius);
  padding: 26px 28px;
  display: flex;
  flex-direction: column;
  gap: 18px;
  max-width: 700px;
}
.finding-top { display: flex; flex-wrap: wrap; gap: 10px; align-items: center; }
.tag {
  font-family: var(--mono);
  font-size: var(--fs-xs);
  letter-spacing: 0.1em;
  text-transform: uppercase;
  padding: 3px 8px;
  border-radius: var(--radius);
  background: var(--flag-soft);
  color: var(--flag);
}
.tag.quiet { background: transparent; border: 1px solid var(--rule); color: var(--ink-soft); }
.finding h3 { font-size: 1.15rem; }
.finding-field { display: flex; flex-direction: column; gap: 5px; }
.finding-field .k {
  font-family: var(--mono);
  font-size: var(--fs-xs);
  letter-spacing: 0.12em;
  text-transform: uppercase;
  color: var(--ink-soft);
}
.finding-field .v { font-size: var(--fs-sm); line-height: 1.55; }
.finding-field .v.mono { font-family: var(--mono); font-size: var(--fs-xs); color: var(--ink-soft); }
.example-note {
  font-family: var(--mono);
  font-size: var(--fs-xs);
  color: var(--ink-soft);
  margin-top: 14px;
}

/* ---------- engagements ---------- */
.engagements {
  display: grid;
  grid-template-columns: repeat(3, minmax(0, 1fr));
  gap: 0;
}
.engagement {
  padding: 0 28px;
  display: flex;
  flex-direction: column;
  gap: 16px;
  border-left: 1px dashed var(--rule);
}
.engagement:first-child { padding-left: 0; border-left: none; }
.engagement:last-child { padding-right: 0; }
.spec { display: flex; flex-direction: column; gap: 4px; }
.spec .k {
  font-family: var(--mono);
  font-size: var(--fs-xs);
  letter-spacing: 0.12em;
  text-transform: uppercase;
  color: var(--ink-soft);
}
.spec .v { font-size: var(--fs-sm); line-height: 1.55; }

/* ---------- process steps ---------- */
.steps { display: grid; grid-template-columns: repeat(4, minmax(0, 1fr)); gap: 28px; }
.step { display: flex; flex-direction: column; gap: 10px; border-top: 2px solid var(--accent); padding-top: 14px; }
.step .num { font-family: var(--mono); font-size: var(--fs-xs); letter-spacing: 0.1em; color: var(--accent); }
.step h3 { font-size: 1.02rem; }
.step p { font-size: var(--fs-sm); line-height: 1.55; color: var(--ink); }

/* ---------- fit ---------- */
.fit-grid { max-width: 640px; }
.fit ul { display: flex; flex-direction: column; gap: 12px; margin-top: 14px; }
.fit li {
  display: grid;
  grid-template-columns: 22px minmax(0, 1fr);
  gap: 10px;
  font-size: var(--fs-sm);
  line-height: 1.55;
}
.fit li .m { font-family: var(--mono); color: var(--accent); }

/* ---------- about ---------- */
.about-grid { display: grid; grid-template-columns: minmax(0, 0.85fr) minmax(0, 1.15fr); gap: 40px; align-items: start; }
.about-photo {
  width: 100%;
  max-width: 120px;
  aspect-ratio: 4 / 5;
  border-radius: var(--radius);
  overflow: hidden;
  background: var(--surface);
  border: 1px solid var(--rule-solid);
}
.about-photo img { width: 100%; height: 100%; object-fit: cover; object-position: 50% 12%; }
.about-bio { display: flex; flex-direction: column; gap: 16px; margin-top: 18px; max-width: 46ch; }
.about-credentials { display: flex; flex-direction: column; gap: 18px; }
.about-credentials ul { display: flex; flex-direction: column; gap: 10px; }
.about-credentials li { font-size: var(--fs-sm); line-height: 1.55; }
.about-credentials .k {
  display: block;
  font-family: var(--mono);
  font-size: var(--fs-xs);
  letter-spacing: 0.12em;
  text-transform: uppercase;
  color: var(--ink-soft);
  margin-bottom: 2px;
}

/* ---------- close ---------- */
.close { display: flex; flex-direction: column; gap: 22px; align-items: flex-start; }
.close h2 { max-width: 20ch; }
.micro-note { font-family: var(--mono); font-size: var(--fs-xs); color: var(--ink-soft); }
.micro-note a { color: var(--ink-soft); }

/* ---------- footer ---------- */
footer.bottom {
  border-top: 1px solid var(--rule-solid);
  padding-block: 26px 40px;
}
.footer-grid {
  display: flex;
  flex-wrap: wrap;
  gap: 24px 40px;
  justify-content: space-between;
  align-items: flex-start;
}
.footer-brand { font-family: var(--display); font-weight: 700; font-size: var(--fs-sm); color: var(--ink); }
.footer-tagline { font-family: var(--mono); font-size: var(--fs-xs); color: var(--ink-soft); margin-top: 6px; }
.footer-links {
  display: flex;
  flex-wrap: wrap;
  gap: 8px 18px;
  font-family: var(--mono);
  font-size: var(--fs-xs);
  color: var(--ink-soft);
}
.footer-links a { color: var(--ink-soft); text-decoration: none; }
.footer-links a:hover { color: var(--accent); }
.footer-legal {
  margin-top: 22px;
  font-family: var(--mono);
  font-size: var(--fs-xs);
  color: var(--ink-soft);
}

/* ============================================================
   Legal pages (privacy policy)
   ============================================================ */
.legal h1 { margin-bottom: 8px; }
.legal__updated {
  font-family: var(--mono);
  font-size: var(--fs-xs);
  letter-spacing: 0.1em;
  text-transform: uppercase;
  color: var(--ink-soft);
  margin-bottom: 40px;
}
.legal h2 { font-size: var(--fs-xl); margin: 40px 0 10px; }
.legal h3 { font-size: var(--fs-base); font-weight: 700; margin: 24px 0 8px; }
.legal p { color: var(--ink); margin-bottom: 14px; max-width: 68ch; }
.legal ul { margin: 0 0 16px; padding-left: 22px; list-style: disc; color: var(--ink); }
.legal li { margin-bottom: 8px; }
.legal strong { color: var(--ink); }
.legal hr { border: none; height: 1px; background: var(--rule-solid); margin: 40px 0; }

/* ============================================================
   Responsive
   ============================================================ */
@media (max-width: 900px) {
  .hero-grid { grid-template-columns: minmax(0, 1fr); gap: 34px; }
  .engagements { grid-template-columns: minmax(0, 1fr); }
  .engagement { padding: 24px 0; border-left: none; border-top: 1px dashed var(--rule); }
  .engagement:first-child { padding-top: 0; border-top: none; }
  .steps { grid-template-columns: repeat(2, minmax(0, 1fr)); }
  .about-grid { grid-template-columns: minmax(0, 1fr); }
}
@media (max-width: 620px) {
  .wordmark__mark { height: 46px; }
  section { padding-block: 44px; }
  .failure { grid-template-columns: minmax(0, 1fr); gap: 6px; }
  .steps { grid-template-columns: minmax(0, 1fr); }
  .finding { padding: 20px; }
}

@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;
  }
}