/* =========================================================
   Vulnerability Engineering — site styles
   Concept: "szum → sygnał" (noise → signal)
   ========================================================= */

:root {
  /* Color */
  --ink:        #16242B;   /* primary text */
  --ink-soft:   #45565A;   /* secondary text */
  --ink-faint:  #6E7B7A;   /* tertiary / meta */
  --paper:      #F2F3F0;   /* base surface */
  --paper-raised:#FBFCF9;  /* cards / raised */
  --petrol:     #1C5560;   /* primary accent: structure / ownership / links */
  --petrol-deep:#123B43;
  --signal:     #C2641F;   /* priority / decision — used sparingly */
  --signal-soft:#E9C9A8;
  --noise:      #9AA39C;   /* the CVE noise */
  --line:       #D7DBD3;   /* hairlines */
  --hero-1:     #0E2A30;
  --hero-2:     #143C44;
  --hero-fg:    #ECEEE8;

  /* Type */
  --display: "Newsreader", Georgia, "Times New Roman", serif;
  --sans: "IBM Plex Sans", system-ui, -apple-system, Segoe UI, Roboto, sans-serif;
  --mono: "IBM Plex Mono", ui-monospace, "SF Mono", Menlo, monospace;

  /* Scale */
  --step--1: clamp(0.80rem, 0.77rem + 0.15vw, 0.875rem);
  --step-0:  clamp(1.02rem, 0.99rem + 0.18vw, 1.125rem);
  --step-1:  clamp(1.25rem, 1.18rem + 0.4vw, 1.5rem);
  --step-2:  clamp(1.6rem, 1.45rem + 0.8vw, 2.1rem);
  --step-3:  clamp(2.1rem, 1.75rem + 1.7vw, 3.2rem);
  --step-4:  clamp(2.6rem, 2.0rem + 3vw, 4.6rem);

  /* Layout */
  --measure: 68ch;
  --gutter: clamp(1.25rem, 4vw, 3rem);
  --maxw: 1120px;
  --radius: 3px;
}

/* ---------- Reset / base ---------- */
*, *::before, *::after { box-sizing: border-box; }
html { -webkit-text-size-adjust: 100%; scroll-behavior: smooth; }
@media (prefers-reduced-motion: reduce) {
  html { scroll-behavior: auto; }
  * { animation: none !important; transition: none !important; }
}
body {
  margin: 0;
  background: var(--paper);
  color: var(--ink);
  font-family: var(--sans);
  font-size: var(--step-0);
  line-height: 1.6;
  font-feature-settings: "ss01";
  -webkit-font-smoothing: antialiased;
  text-rendering: optimizeLegibility;
}
img { max-width: 100%; display: block; }
a { color: var(--petrol); text-decoration-thickness: 1px; text-underline-offset: 3px; }
a:hover { color: var(--petrol-deep); }

.wrap { width: 100%; max-width: var(--maxw); margin-inline: auto; padding-inline: var(--gutter); }

.eyebrow {
  font-family: var(--mono);
  font-size: var(--step--1);
  letter-spacing: 0.16em;
  text-transform: uppercase;
  color: var(--petrol);
  margin: 0;
}
.eyebrow .sig { color: var(--signal); }

/* ---------- Skip link / a11y ---------- */
.skip {
  position: absolute; left: -999px; top: 0;
  background: var(--ink); color: #fff; padding: .6rem 1rem; z-index: 100;
}
.skip:focus { left: 0; }
:focus-visible { outline: 2px solid var(--signal); outline-offset: 3px; }

/* ---------- Nav ---------- */
.nav {
  position: sticky; top: 0; z-index: 50;
  background: color-mix(in srgb, var(--paper) 88%, transparent);
  backdrop-filter: saturate(140%) blur(8px);
  border-bottom: 1px solid var(--line);
}
.nav-inner { display: flex; align-items: center; justify-content: space-between; height: 64px; }
.brand { display: inline-flex; align-items: baseline; gap: .5rem; text-decoration: none; color: var(--ink); }
.brand b { font-family: var(--display); font-weight: 600; font-size: 1.15rem; letter-spacing: -0.01em; }
.brand .tag {
  font-family: var(--mono); font-size: .68rem; letter-spacing: .12em; text-transform: uppercase;
  color: var(--petrol); border: 1px solid var(--line); border-radius: 2px; padding: .15rem .35rem;
}
.nav-links { display: flex; align-items: center; gap: clamp(.9rem, 2vw, 1.8rem); }
.nav-links a { font-size: var(--step--1); text-decoration: none; color: var(--ink-soft); }
.nav-links a:hover { color: var(--ink); }
.nav-links .ln { display: inline-flex; align-items: center; gap: .4rem; color: var(--petrol); font-weight: 500; }
.nav-links .ln svg { width: 15px; height: 15px; }

/* ---------- Hero ---------- */
.hero {
  position: relative; overflow: clip;
  background: linear-gradient(160deg, var(--hero-1), var(--hero-2));
  color: var(--hero-fg);
  border-bottom: 1px solid var(--petrol-deep);
}
.hero .wrap { position: relative; z-index: 2; padding-block: clamp(4rem, 11vh, 8rem) clamp(3.5rem, 9vh, 6.5rem); }
.hero .eyebrow { color: #8FC6CF; }
.hero .eyebrow .sig { color: #E7A872; }
.hero h1 {
  font-family: var(--display);
  font-weight: 500;
  font-size: var(--step-4);
  line-height: 1.04;
  letter-spacing: -0.02em;
  margin: 1.1rem 0 0;
  max-width: 18ch;
}
.hero h1 em { font-style: italic; color: #E7A872; }
.hero .lead {
  max-width: 52ch; margin-top: 1.4rem; color: #C7D2D1;
  font-size: var(--step-1); line-height: 1.5;
}
.hero-cta { display: flex; flex-wrap: wrap; gap: .9rem; margin-top: 2rem; }

/* CVE noise — the signature ambient layer */
.noise-layer {
  position: absolute; inset: 0; z-index: 1; overflow: hidden;
  pointer-events: none; user-select: none;
  -webkit-mask-image: linear-gradient(95deg, transparent 38%, #000 78%, transparent 100%);
          mask-image: linear-gradient(95deg, transparent 38%, #000 78%, transparent 100%);
}
.noise-col {
  position: absolute; top: -2rem; right: clamp(-1rem, 2vw, 4rem);
  font-family: var(--mono); font-size: .72rem; line-height: 1.9;
  color: rgba(255,255,255,.07); white-space: pre; text-align: right;
}
@media (max-width: 760px){ .noise-layer { opacity: .55; } }

/* ---------- Buttons ---------- */
.btn {
  display: inline-flex; align-items: center; gap: .5rem;
  font-family: var(--sans); font-size: var(--step--1); font-weight: 500;
  padding: .72rem 1.15rem; border-radius: var(--radius);
  text-decoration: none; border: 1px solid transparent; cursor: pointer;
  transition: transform .15s ease, background .15s ease, border-color .15s ease;
}
.btn svg { width: 16px; height: 16px; }
.btn-primary { background: var(--signal); color: #fff; }
.btn-primary:hover { background: #A95214; color:#fff; transform: translateY(-1px); }
.btn-ghost { background: transparent; color: var(--hero-fg); border-color: rgba(255,255,255,.35); }
.btn-ghost:hover { border-color: #fff; color: #fff; transform: translateY(-1px); }
.btn-outline { background: transparent; color: var(--petrol); border-color: var(--petrol); }
.btn-outline:hover { background: var(--petrol); color: #fff; transform: translateY(-1px); }

/* ---------- Reframe strip (signature) ---------- */
.reframe {
  border-bottom: 1px solid var(--line);
  background: var(--paper-raised);
}
.reframe .wrap { padding-block: clamp(2.2rem, 6vh, 3.4rem); }
.reframe-grid { display: grid; gap: clamp(1rem,3vw,2rem); grid-template-columns: 1fr; }
@media (min-width: 720px){ .reframe-grid { grid-template-columns: 1fr 1fr; } }
.reframe-item {
  font-family: var(--display); font-size: var(--step-1); line-height: 1.25;
  color: var(--ink); display: flex; align-items: baseline; gap: .7rem; flex-wrap: wrap;
}
.reframe-item .from { color: var(--noise); text-decoration: line-through; text-decoration-color: var(--signal-soft); }
.reframe-item .arrow { font-family: var(--mono); color: var(--signal); font-size: .9em; }
.reframe-item .to { color: var(--petrol-deep); }
.reframe-note {
  font-family: var(--mono); font-size: var(--step--1); color: var(--ink-faint);
  letter-spacing: .04em; margin-top: 1.6rem; max-width: 60ch;
}

/* ---------- Sections ---------- */
.section { padding-block: clamp(3.5rem, 9vh, 6rem); }
.section-head { display: flex; align-items: end; justify-content: space-between; gap: 1rem; flex-wrap: wrap; margin-bottom: 2.2rem; }
.section-head h2 {
  font-family: var(--display); font-weight: 500; font-size: var(--step-3);
  letter-spacing: -0.015em; line-height: 1.05; margin: .4rem 0 0;
}
.section-head .count { font-family: var(--mono); font-size: var(--step--1); color: var(--ink-faint); }

/* Featured article card */
.feature {
  display: grid; grid-template-columns: 1fr; gap: 0;
  border: 1px solid var(--line); border-radius: var(--radius); overflow: hidden;
  background: var(--paper-raised); margin-bottom: 1.5rem;
  transition: border-color .18s ease, transform .18s ease, box-shadow .18s ease;
}
.feature:hover { border-color: var(--petrol); transform: translateY(-2px); box-shadow: 0 14px 40px -28px rgba(16,44,51,.55); }
.feature a.cover { text-decoration: none; color: inherit; display: block; padding: clamp(1.6rem, 4vw, 2.6rem); }
.feature .idx { font-family: var(--mono); font-size: var(--step--1); color: var(--signal); letter-spacing: .1em; }
.feature h3 {
  font-family: var(--display); font-weight: 500; font-size: var(--step-2);
  line-height: 1.12; letter-spacing: -0.01em; margin: .5rem 0 0; color: var(--ink);
  max-width: 24ch;
}
.feature p { color: var(--ink-soft); margin: .9rem 0 0; max-width: 62ch; }
.feature .more { display: inline-flex; align-items:center; gap:.4rem; margin-top: 1.2rem; font-family: var(--mono); font-size: var(--step--1); letter-spacing: .04em; color: var(--petrol); }
.feature:hover .more { color: var(--petrol-deep); }
.feature .more .ar { transition: transform .18s ease; }
.feature:hover .more .ar { transform: translateX(3px); }

/* Article index rows */
.rows { border-top: 1px solid var(--line); }
.row {
  display: grid; grid-template-columns: auto 1fr auto; align-items: center; gap: clamp(.8rem,2vw,1.6rem);
  padding: 1.05rem .25rem; border-bottom: 1px solid var(--line);
  text-decoration: none; color: inherit;
  transition: padding-left .18s ease, background .18s ease;
}
.row:hover { background: var(--paper-raised); padding-left: .9rem; }
.row .num { font-family: var(--mono); font-size: var(--step--1); color: var(--ink-faint); }
.row .title { font-family: var(--display); font-size: var(--step-1); color: var(--ink); line-height: 1.2; }
.row.is-live .title { color: var(--ink); }
.row .status {
  font-family: var(--mono); font-size: .68rem; letter-spacing: .1em; text-transform: uppercase;
  color: var(--ink-faint); border: 1px solid var(--line); border-radius: 2px; padding: .2rem .45rem; white-space: nowrap;
}
.row.is-live .status { color: var(--petrol); border-color: var(--petrol); }
.row.is-live .num { color: var(--signal); }
.row:hover .title { color: var(--petrol-deep); }

/* ---------- VMRT teaser ---------- */
.vmrt { background: linear-gradient(160deg, var(--hero-1), var(--hero-2)); color: var(--hero-fg); }
.vmrt .wrap { padding-block: clamp(3.5rem, 9vh, 6rem); }
.vmrt .eyebrow { color: #8FC6CF; }
.vmrt h2 {
  font-family: var(--display); font-weight: 500; font-size: var(--step-3); line-height: 1.08;
  letter-spacing: -0.015em; margin: 1rem 0 0; max-width: 20ch;
}
.vmrt p { color: #C7D2D1; max-width: 56ch; margin-top: 1.1rem; }
.vmrt .panel {
  margin-top: 2.2rem; border: 1px solid rgba(255,255,255,.16); border-radius: var(--radius);
  background: rgba(255,255,255,.03); padding: clamp(1.4rem, 4vw, 2.4rem);
  display: grid; gap: 1rem; grid-template-columns: 1fr;
}
@media (min-width: 720px){ .vmrt .panel { grid-template-columns: repeat(3, 1fr); } }
.vmrt .panel .cell .k { font-family: var(--mono); font-size: var(--step--1); color: #8FC6CF; letter-spacing:.08em; }
.vmrt .panel .cell .v { margin-top:.3rem; color:#DCE3E1; }
.vmrt .demo-note { margin-top: 1.8rem; font-family: var(--mono); font-size: var(--step--1); color:#8FC6CF; letter-spacing:.04em; }

/* ---------- Footer ---------- */
.footer { border-top: 1px solid var(--line); background: var(--paper-raised); }
.footer .wrap { padding-block: clamp(2.6rem, 7vh, 4rem); display: grid; gap: 2rem; grid-template-columns: 1fr; }
@media (min-width: 760px){ .footer .wrap { grid-template-columns: 1.4fr 1fr 1fr; } }
.footer h4 { font-family: var(--mono); font-size: var(--step--1); letter-spacing: .12em; text-transform: uppercase; color: var(--ink-faint); margin: 0 0 .9rem; font-weight: 500; }
.footer .bio { font-family: var(--display); font-size: var(--step-1); line-height: 1.3; color: var(--ink); max-width: 36ch; }
.footer .bio span { color: var(--ink-soft); font-family: var(--sans); font-size: var(--step-0); display:block; margin-top:.6rem; line-height:1.55; }
.footer ul { list-style: none; padding: 0; margin: 0; display: grid; gap: .5rem; }
.footer ul a { text-decoration: none; color: var(--ink-soft); font-size: var(--step--1); }
.footer ul a:hover { color: var(--petrol-deep); }
.footer .ln-btn { display:inline-flex; align-items:center; gap:.5rem; margin-top:.4rem; }
.footer .ln-btn svg { width: 16px; height:16px; }
.colophon { border-top: 1px solid var(--line); }
.colophon .wrap { display:flex; justify-content:space-between; gap:1rem; flex-wrap:wrap; padding-block: 1.2rem; }
.colophon p { margin:0; font-family: var(--mono); font-size: .72rem; color: var(--ink-faint); letter-spacing:.03em; }

/* ---------- Article page ---------- */
.progress { position: fixed; top:0; left:0; height: 3px; width: 0; background: var(--signal); z-index: 60; }
.article-head { border-bottom: 1px solid var(--line); }
.article-head .wrap { padding-block: clamp(2.6rem, 7vh, 4.5rem) clamp(2rem,5vh,3rem); }
.crumbs { font-family: var(--mono); font-size: var(--step--1); color: var(--ink-faint); letter-spacing:.04em; }
.crumbs a { color: var(--ink-soft); text-decoration:none; }
.crumbs a:hover { color: var(--petrol-deep); }
.article-head h1 {
  font-family: var(--display); font-weight: 500; font-size: var(--step-3);
  line-height: 1.08; letter-spacing: -0.018em; margin: 1.1rem 0 0; max-width: 26ch;
}
.article-meta { display:flex; flex-wrap:wrap; align-items:center; gap: 1rem; margin-top: 1.4rem; }
.article-meta .m { font-family: var(--mono); font-size: var(--step--1); color: var(--ink-faint); letter-spacing:.04em; }
.article-meta .dot { color: var(--line); }

.prose { padding-block: clamp(2.4rem, 6vh, 4rem); }
.prose .wrap { max-width: calc(var(--measure) + 2 * var(--gutter)); }
.prose h2 {
  font-family: var(--display); font-weight: 500; font-size: var(--step-2); line-height: 1.15;
  letter-spacing: -0.01em; margin: 2.6rem 0 .8rem; color: var(--ink);
}
.prose h2:first-child { margin-top: 0; }
.prose p { margin: 0 0 1.15rem; color: var(--ink); }
.prose .lead-p { font-size: var(--step-1); line-height: 1.5; color: var(--ink-soft); }
.prose ul { margin: 0 0 1.3rem; padding-left: 0; list-style: none; }
.prose ul li {
  position: relative; padding-left: 1.5rem; margin-bottom: .6rem; color: var(--ink);
}
.prose ul li::before {
  content: "—"; position: absolute; left: 0; color: var(--petrol); font-family: var(--mono);
}
.prose strong { font-weight: 600; }

/* inline reframe block inside prose */
.reframe-block {
  border-left: 3px solid var(--signal); background: var(--paper-raised);
  padding: 1.2rem 1.4rem; margin: 1.8rem 0; border-radius: 0 var(--radius) var(--radius) 0;
}
.reframe-block .rb {
  font-family: var(--display); font-size: var(--step-1); line-height: 1.3;
  display:flex; gap:.6rem; flex-wrap:wrap; align-items:baseline;
}
.reframe-block .rb .from { color: var(--noise); text-decoration: line-through; text-decoration-color: var(--signal-soft); }
.reframe-block .rb .arrow { font-family: var(--mono); color: var(--signal); }
.reframe-block .rb .to { color: var(--petrol-deep); }

/* big pull takeaway */
.takeaway { border-top: 1px solid var(--line); border-bottom: 1px solid var(--line); }
.takeaway .wrap { max-width: calc(var(--measure) + 2 * var(--gutter)); padding-block: clamp(2.4rem,6vh,3.6rem); }
.takeaway .k { font-family: var(--mono); font-size: var(--step--1); letter-spacing:.12em; text-transform:uppercase; color: var(--signal); }
.takeaway p { font-family: var(--display); font-size: var(--step-2); line-height: 1.22; letter-spacing:-0.01em; margin:.8rem 0 0; color: var(--ink); }

/* article footer / next + share */
.article-foot { padding-block: clamp(2.6rem,7vh,4rem); }
.article-foot .wrap { max-width: calc(var(--measure) + 2 * var(--gutter)); }
.share-row { display:flex; align-items:center; gap:1rem; flex-wrap:wrap; margin-bottom: 2.4rem; }
.share-row .lbl { font-family: var(--mono); font-size: var(--step--1); color: var(--ink-faint); letter-spacing:.06em; }
.next-card {
  display:block; text-decoration:none; border:1px solid var(--line); border-radius: var(--radius);
  padding: 1.4rem 1.6rem; transition: border-color .18s ease, transform .18s ease;
}
.next-card:hover { border-color: var(--petrol); transform: translateY(-2px); }
.next-card .k { font-family: var(--mono); font-size: var(--step--1); color: var(--ink-faint); letter-spacing:.08em; }
.next-card .t { font-family: var(--display); font-size: var(--step-1); color: var(--ink); margin-top:.4rem; }
.next-card:hover .t { color: var(--petrol-deep); }

/* ---------- Reveal on scroll ---------- */
.reveal { opacity: 0; transform: translateY(14px); transition: opacity .6s ease, transform .6s ease; }
.reveal.in { opacity: 1; transform: none; }
@media (prefers-reduced-motion: reduce){ .reveal { opacity:1; transform:none; } }

/* ---------- Raw CVE block (kontrast "surowy CVE → po ludzku") ---------- */
.cve-raw {
  font-family: var(--mono); font-size: var(--step--1); line-height: 1.65;
  background: #0E2A30; color: #C7D2D1; border-left: 3px solid var(--noise);
  border-radius: 0 var(--radius) var(--radius) 0; padding: 1.1rem 1.3rem; margin: 1.5rem 0;
  overflow-x: auto;
}
.cve-raw .tagk { color: #8FC6CF; }
.cve-raw .sigk { color: #E7A872; }
.cve-good {
  border-left: 3px solid var(--petrol); background: var(--paper-raised);
  border-radius: 0 var(--radius) var(--radius) 0; padding: 1.1rem 1.4rem; margin: 1.5rem 0;
}
.cve-good ul { margin: 0 !important; }
.cve-good .field { margin-bottom: .55rem; }
.cve-good .field:last-child { margin-bottom: 0; }
.cve-good .fk { font-family: var(--mono); font-size: var(--step--1); color: var(--petrol); letter-spacing: .03em; }