/* Blog vault design override
   本文・見出しなどのHTML内容は変更せず、既存Tailwind指定の上から見た目だけ整えるCSSです。 */

:root {
  --vault-bg: #030504;
  --vault-bg-deep: #010201;
  --vault-panel: #0a110f;
  --vault-panel-2: #0d1915;
  --vault-ink: #ffffff;
  --vault-muted: #c5d4cf;
  --vault-line: #5f8074;
  --vault-accent: #20d39a;
  --vault-yellow: #d8ff52;
  --vault-red: #f04a3a;
  --vault-black: #050806;
}

html {
  background: var(--vault-bg);
}

body {
  background:
    radial-gradient(circle at 18% 8%, rgba(32, 211, 154, 0.10), transparent 28rem),
    linear-gradient(rgba(69, 100, 91, 0.08) 1px, transparent 1px),
    linear-gradient(90deg, rgba(69, 100, 91, 0.08) 1px, transparent 1px),
    var(--vault-bg) !important;
  background-size: auto, 56px 56px, 56px 56px, auto !important;
  color: var(--vault-ink) !important;
  font-family: "Noto Sans JP", system-ui, -apple-system, BlinkMacSystemFont, sans-serif !important;
  letter-spacing: 0.01em;
}

header,
footer {
  background: rgba(5, 8, 6, 0.92) !important;
  border-color: var(--vault-line) !important;
  backdrop-filter: blur(12px);
}

header {
  position: sticky;
  top: 0;
  z-index: 40;
  box-shadow: 0 1px 0 rgba(216, 255, 82, 0.28);
}

header > div,
footer > div,
main > div {
  max-width: 1120px !important;
}

main {
  position: relative;
  overflow: hidden;
}

main::before {
  content: "SECURITY BLOG";
  position: fixed;
  right: -0.15em;
  top: 18vh;
  z-index: -1;
  color: rgba(237, 248, 245, 0.035);
  font-size: clamp(4rem, 13vw, 13rem);
  font-weight: 900;
  letter-spacing: 0.04em;
  line-height: 0.9;
  pointer-events: none;
  writing-mode: vertical-rl;
}

h1,
h2,
h3,
h4,
.font-bold {
  color: var(--vault-ink) !important;
}

h1 {
  display: inline-block;
  border: 3px solid var(--vault-line);
  background: var(--vault-panel);
  padding: 0.28em 0.55em;
  box-shadow: 8px 8px 0 var(--vault-accent);
  text-transform: none;
}

main h2 {
  line-height: 1.45 !important;
}

  p,
li,
td,
dd {
  color: #e4efeb !important;
}

strong {
  color: var(--vault-ink) !important;
}

a {
  color: inherit;
}

nav a,
a.text-gray-300 {
  color: #e4efeb !important;
}

nav a:hover,
a.text-cyber,
.text-cyber,
.group:hover h2,
.group-hover\:text-cyber:hover,
.group:hover .group-hover\:text-cyber,
.group:hover .group-hover\:text-accent,
a:hover {
  color: var(--vault-accent) !important;
}

.text-accent {
  color: var(--vault-yellow) !important;
}

.text-gray-300,
.text-gray-400,
.text-gray-500,
.text-gray-600 {
  color: var(--vault-muted) !important;
}

.bg-dark,
.bg-dark-light {
  background-color: var(--vault-bg) !important;
}

.bg-dark-card,
article,
section.bg-dark-card {
  background: linear-gradient(145deg, rgba(13, 32, 27, 0.98), rgba(7, 20, 17, 0.98)) !important;
  border: 2px solid var(--vault-line) !important;
  border-radius: 0 !important;
  box-shadow: 8px 8px 0 rgba(32, 211, 154, 0.22);
}

a.bg-dark-card,
section.bg-dark-card,
article.bg-dark-card,
div.bg-dark-card {
  transition: transform 0.18s ease, border-color 0.18s ease, box-shadow 0.18s ease !important;
}

a.bg-dark-card:hover {
  transform: translate(-3px, -3px);
  border-color: var(--vault-accent) !important;
  box-shadow: 11px 11px 0 var(--vault-accent);
}

.border-gray-700,
.border-gray-800,
.border-cyber\/30,
.hover\:border-cyber\/50:hover,
.hover\:border-accent\/50:hover {
  border-color: var(--vault-line) !important;
}

.bg-cyber,
.bg-accent,
.bg-cyber\/10,
.bg-accent\/10 {
  background-color: var(--vault-yellow) !important;
  color: var(--vault-black) !important;
}

.text-dark {
  color: var(--vault-black) !important;
}

span.rounded-full,
a.rounded-full,
.rounded-xl,
.rounded-2xl {
  border-radius: 0 !important;
}

span.text-xs {
  border: 2px solid var(--vault-line);
  font-weight: 900 !important;
  letter-spacing: 0.08em;
}

code {
  color: var(--vault-yellow) !important;
  background: rgba(216, 255, 82, 0.08);
  border: 1px solid rgba(216, 255, 82, 0.28);
  padding: 0.08em 0.32em;
}

table {
  border-color: var(--vault-line) !important;
  background: rgba(5, 8, 6, 0.36);
}

th {
  color: var(--vault-yellow) !important;
  background: rgba(13, 32, 27, 0.98);
}

td,
th {
  border-color: var(--vault-line) !important;
}

.prose,
.prose p,
.prose li {
  color: #c9d8d3 !important;
}

.prose h2,
.prose h3 {
  color: var(--vault-ink) !important;
}

.prose a {
  color: var(--vault-accent) !important;
}

footer p {
  color: #78918a !important;
}

.wrap {
  width: min(100% - 32px, 960px);
  margin-inline: auto;
}

article.long {
  padding: clamp(24px, 4vw, 48px) !important;
  margin-block: clamp(28px, 5vw, 72px);
}

article.long h1 {
  margin-bottom: 1.2em;
}

article.long h2 {
  margin-top: 2.1em;
  margin-bottom: 0.8em;
  padding-left: 0.7em;
  border-left: 5px solid var(--vault-accent);
}

article.long h3 {
  margin-top: 1.5em;
  margin-bottom: 0.55em;
  color: var(--vault-yellow) !important;
}

article.long p,
article.long li {
  line-height: 1.95;
}

article.long ul,
article.long ol {
  padding-left: 1.4em;
  margin-block: 1em;
}

.eyebrow {
  color: var(--vault-accent) !important;
  font-weight: 900;
  letter-spacing: 0.14em;
  text-transform: uppercase;
}

.note,
.cta {
  background: rgba(13, 32, 27, 0.98) !important;
  border: 2px solid var(--vault-line) !important;
  border-radius: 0 !important;
  box-shadow: 7px 7px 0 rgba(216, 255, 82, 0.22);
  padding: clamp(18px, 3vw, 28px) !important;
}

.cta {
  margin-top: 3rem;
}

.btn,
a.btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  min-height: 48px;
  margin-top: 1rem;
  padding: 0.85rem 1.35rem;
  background: var(--vault-yellow) !important;
  color: var(--vault-black) !important;
  border: 2px solid var(--vault-yellow);
  border-radius: 0 !important;
  font-weight: 900;
  text-decoration: none !important;
  box-shadow: 6px 6px 0 var(--vault-accent);
}

.btn:hover,
a.btn:hover {
  transform: translate(-2px, -2px);
  box-shadow: 8px 8px 0 var(--vault-accent);
}

.back-link {
  display: inline-block;
  margin-top: 2rem;
  color: var(--vault-accent) !important;
  font-weight: 800;
}

.footer {
  padding: 2rem 0;
  color: #78918a !important;
}

.text-red-400,
.text-yellow-400,
.text-red-500 {
  color: var(--vault-yellow) !important;
}

.bg-red-900\/20,
.bg-yellow-900\/20 {
  background-color: rgba(216, 255, 82, 0.08) !important;
}

.border-red-800\/50,
.border-yellow-700\/50 {
  border-color: rgba(216, 255, 82, 0.45) !important;
}

@media (max-width: 768px) {
  h1 {
    box-shadow: 5px 5px 0 var(--vault-accent);
  }

  .bg-dark-card,
  article,
  section.bg-dark-card {
    box-shadow: 5px 5px 0 rgba(32, 211, 154, 0.18);
  }
}