/* ============================================================
   VULN ANALYSIS BLOG — Terminal Dark Theme
   Matching: terraformProjects/website aesthetic
   ============================================================ */

@import url('https://fonts.googleapis.com/css2?family=Bebas+Neue&family=JetBrains+Mono:wght@300;400;500;600&display=swap');

/* Variables */
:root {
  --bg:             #050505;
  --surface:        #0d0d0d;
  --surface-2:      #111111;
  --border:         rgba(0, 255, 136, 0.12);
  --border-dim:     rgba(255, 255, 255, 0.06);
  --accent:         #00ff88;
  --accent-glow:    rgba(0, 255, 136, 0.18);
  --accent-border:  rgba(0, 255, 136, 0.22);
  --accent-dim:     rgba(0, 255, 136, 0.7);
  --text:           #d4d4d4;
  --text-mid:       #888;
  --text-dim:       #444;
  --code-bg:        #0a0a0a;
  --font-mono:      'JetBrains Mono', 'SFMono-Regular', Consolas, monospace;
  --font-display:   'Bebas Neue', sans-serif;
}

/* Reset */
*, *::before, *::after {
  box-sizing: border-box;
  margin: 0;
  padding: 0;
}

html {
  font-size: 16px;
  scroll-behavior: smooth;
}

/* Body & Background */
body {
  background: var(--bg);
  color: var(--text);
  font-family: var(--font-mono);
  font-weight: 300;
  line-height: 1.75;
  min-height: 100vh;
  position: relative;
}

/* Dot-grid background */
body::before {
  content: '';
  position: fixed;
  inset: 0;
  background-image: radial-gradient(circle, rgba(0, 255, 136, 0.05) 1px, transparent 1px);
  background-size: 36px 36px;
  pointer-events: none;
  z-index: 0;
}

/* Vignette */
body::after {
  content: '';
  position: fixed;
  inset: 0;
  background: radial-gradient(ellipse 80% 80% at center, transparent 40%, #050505 100%);
  pointer-events: none;
  z-index: 0;
}

/* Film grain overlay */
.grain {
  position: fixed;
  inset: -50%;
  width: 200%;
  height: 200%;
  background-image: url("data:image/svg+xml,%3Csvg viewBox='0 0 512 512' xmlns='http://www.w3.org/2000/svg'%3E%3Cfilter id='n'%3E%3CfeTurbulence type='fractalNoise' baseFrequency='0.85' numOctaves='4' stitchTiles='stitch'/%3E%3C/filter%3E%3Crect width='100%25' height='100%25' filter='url(%23n)'/%3E%3C/svg%3E");
  opacity: 0.03;
  pointer-events: none;
  z-index: 900;
  animation: grainShift 0.12s steps(1) infinite;
}

@keyframes grainShift {
  0%   { transform: translate(0, 0); }
  25%  { transform: translate(-2%, 1%); }
  50%  { transform: translate(1%, -2%); }
  75%  { transform: translate(2%, 2%); }
  100% { transform: translate(-1%, -1%); }
}

/* Corner brackets */
.corner {
  position: fixed;
  width: 24px;
  height: 24px;
  z-index: 10;
  opacity: 0;
  animation: fadeIn 0.4s ease forwards 0.8s;
}
.corner-tl { top: 18px; left: 18px; border-top: 1px solid var(--accent); border-left: 1px solid var(--accent); }
.corner-tr { top: 18px; right: 18px; border-top: 1px solid var(--accent); border-right: 1px solid var(--accent); }
.corner-bl { bottom: 18px; left: 18px; border-bottom: 1px solid var(--accent); border-left: 1px solid var(--accent); }
.corner-br { bottom: 18px; right: 18px; border-bottom: 1px solid var(--accent); border-right: 1px solid var(--accent); }

/* Status bar */
.status {
  position: fixed;
  bottom: 24px;
  left: 50%;
  transform: translateX(-50%);
  display: flex;
  align-items: center;
  gap: 7px;
  font-size: 0.58rem;
  letter-spacing: 0.18em;
  color: var(--text-dim);
  text-transform: uppercase;
  z-index: 10;
  opacity: 0;
  animation: fadeIn 0.4s ease forwards 1.0s;
  white-space: nowrap;
}
.status-dot {
  width: 5px;
  height: 5px;
  border-radius: 50%;
  background: var(--accent);
  box-shadow: 0 0 6px var(--accent);
  animation: pulse 2.2s ease-in-out infinite;
  flex-shrink: 0;
}
@keyframes pulse {
  0%, 100% { opacity: 1; transform: scale(1); }
  50%       { opacity: 0.4; transform: scale(0.7); }
}

/* ============================================================
   LAYOUT
   ============================================================ */

header {
  position: sticky;
  top: 0;
  z-index: 100;
  background: rgba(5, 5, 5, 0.92);
  backdrop-filter: blur(12px);
  -webkit-backdrop-filter: blur(12px);
  border-bottom: 1px solid var(--border);
  padding: 0 2rem;
  height: 54px;
  display: flex;
  align-items: center;
  justify-content: space-between;
  opacity: 0;
  animation: fadeIn 0.4s ease forwards 0.2s;
}

header h1 {
  font-family: var(--font-display);
  font-size: 1.4rem;
  letter-spacing: 0.1em;
  margin: 0;
}

header h1 a {
  color: var(--accent);
  text-decoration: none;
  text-shadow: 0 0 14px rgba(0, 255, 136, 0.4);
  transition: text-shadow 0.2s;
}

header h1 a:hover {
  text-shadow: 0 0 22px rgba(0, 255, 136, 0.7);
}

header nav {
  display: flex;
  align-items: center;
  gap: 4px;
}

nav a {
  display: inline-flex;
  align-items: center;
  gap: 0px;
  padding: 6px 16px;
  border: 1px solid var(--text-dim);
  border-radius: 2px;
  color: var(--text-mid);
  text-decoration: none;
  font-family: var(--font-mono);
  font-size: 0.68rem;
  letter-spacing: 0.12em;
  text-transform: lowercase;
  transition: color 0.2s, border-color 0.2s, background 0.2s, gap 0.2s;
}

nav a .prompt {
  display: inline-block;
  color: var(--accent);
  opacity: 0;
  max-width: 0;
  overflow: hidden;
  transition: opacity 0.2s, max-width 0.25s ease;
  font-size: 0.65rem;
}

nav a:hover {
  color: var(--accent);
  border-color: var(--accent-border);
  background: var(--accent-glow);
  gap: 6px;
}

nav a:hover .prompt {
  opacity: 1;
  max-width: 20px;
}

main {
  position: relative;
  z-index: 1;
  max-width: 840px;
  margin: 0 auto;
  padding: 3rem 2rem 6rem;
  opacity: 0;
  animation: fadeUp 0.6s cubic-bezier(0.16, 1, 0.3, 1) forwards 0.35s;
}

footer {
  position: relative;
  z-index: 1;
  border-top: 1px solid var(--border-dim);
  padding: 1.5rem 2rem;
  text-align: center;
  color: var(--text-dim);
  font-size: 0.65rem;
  letter-spacing: 0.12em;
  text-transform: uppercase;
  margin-bottom: 48px;
}

/* ============================================================
   TYPOGRAPHY
   ============================================================ */

h1, h2, h3, h4, h5, h6 {
  line-height: 1.25;
  margin-top: 2.25rem;
  margin-bottom: 0.75rem;
}

h1 {
  font-family: var(--font-display);
  font-size: 2.8rem;
  letter-spacing: 0.06em;
  color: var(--accent);
  text-shadow: 0 0 20px rgba(0, 255, 136, 0.3), 0 0 60px rgba(0, 255, 136, 0.1);
  margin-top: 0;
}

h2 {
  font-family: var(--font-mono);
  font-size: 0.8rem;
  font-weight: 500;
  letter-spacing: 0.2em;
  text-transform: uppercase;
  color: var(--accent);
  padding-bottom: 0.5rem;
  border-bottom: 1px solid var(--border);
}

/* Prefix h2 with >_ */
h2::before {
  content: '>_ ';
  opacity: 0.5;
}

h3 {
  font-family: var(--font-mono);
  font-size: 0.9rem;
  font-weight: 500;
  color: var(--text);
  letter-spacing: 0.06em;
}

h4 {
  font-size: 0.85rem;
  font-weight: 500;
  color: var(--text-mid);
  letter-spacing: 0.08em;
  text-transform: uppercase;
}

p {
  margin: 0 0 1rem;
  color: var(--text);
}

a {
  color: var(--accent);
  text-decoration: none;
  transition: color 0.15s;
}

a:hover {
  color: var(--accent-dim);
  text-decoration: underline;
  text-underline-offset: 3px;
}

ul, ol {
  padding-left: 1.5rem;
  margin: 0 0 1rem;
}

li {
  margin-bottom: 0.35rem;
  color: var(--text);
}

/* Bullet color */
ul li::marker  { color: var(--accent); }
ol li::marker  { color: var(--accent); }

strong {
  font-weight: 600;
  color: #f1f5f9;
}

hr {
  border: none;
  border-top: 1px solid var(--border-dim);
  margin: 2.5rem 0;
  position: relative;
}

hr::after {
  content: '//';
  position: absolute;
  left: 50%;
  top: 50%;
  transform: translate(-50%, -50%);
  background: var(--bg);
  padding: 0 0.75rem;
  color: var(--text-dim);
  font-size: 0.65rem;
  letter-spacing: 0.1em;
}

/* ============================================================
   CODE
   ============================================================ */

code {
  font-family: var(--font-mono);
  font-size: 0.83em;
  background: var(--code-bg);
  color: var(--accent);
  padding: 0.15em 0.45em;
  border-radius: 3px;
  border: 1px solid var(--border);
}

pre {
  background: var(--code-bg);
  border: 1px solid var(--border);
  border-radius: 4px;
  padding: 1.25rem 1.5rem;
  overflow-x: auto;
  margin: 0 0 1.5rem;
  position: relative;
}

/* Top bar on code blocks */
pre::before {
  content: '';
  display: block;
  height: 2px;
  background: linear-gradient(90deg, var(--accent), transparent);
  margin-bottom: 1rem;
  opacity: 0.5;
}

pre code {
  background: none;
  border: none;
  padding: 0;
  color: #cdd9e5;
  font-size: 0.85rem;
  line-height: 1.65;
}

/* ============================================================
   BLOCKQUOTE
   ============================================================ */

blockquote {
  border-left: 2px solid var(--accent);
  margin: 0 0 1rem;
  padding: 0.75rem 0 0.75rem 1.25rem;
  background: var(--accent-glow);
  color: var(--text-mid);
  font-style: normal;
  border-radius: 0 4px 4px 0;
}

blockquote p {
  margin: 0;
  color: var(--text-mid);
}

/* ============================================================
   TABLES
   ============================================================ */

table {
  width: 100%;
  border-collapse: collapse;
  margin-bottom: 1.5rem;
  font-size: 0.82rem;
}

th {
  background: var(--surface-2);
  color: var(--accent);
  font-weight: 500;
  text-align: left;
  padding: 0.6rem 1rem;
  border: 1px solid var(--border);
  letter-spacing: 0.1em;
  text-transform: uppercase;
  font-size: 0.72rem;
}

td {
  padding: 0.55rem 1rem;
  border: 1px solid var(--border-dim);
  color: var(--text-mid);
}

tr:nth-child(even) td {
  background: rgba(0, 255, 136, 0.02);
}

tr:hover td {
  background: rgba(0, 255, 136, 0.04);
  color: var(--text);
}

/* ============================================================
   ARTICLE INDEX CARDS
   ============================================================ */

.article-list {
  list-style: none;
  padding: 0;
  margin: 1.5rem 0 0;
  display: flex;
  flex-direction: column;
  gap: 0.75rem;
}

.article-list li {
  margin: 0;
}

.article-card {
  background: var(--surface);
  border: 1px solid var(--border-dim);
  border-radius: 3px;
  padding: 1.1rem 1.4rem;
  transition: border-color 0.2s, background 0.2s, transform 0.2s;
  position: relative;
  overflow: hidden;
}

/* Left accent line */
.article-card::before {
  content: '';
  position: absolute;
  left: 0;
  top: 0;
  bottom: 0;
  width: 2px;
  background: var(--accent);
  opacity: 0;
  transition: opacity 0.2s;
}

.article-card:hover {
  border-color: var(--border);
  background: var(--surface-2);
  transform: translateX(3px);
}

.article-card:hover::before {
  opacity: 1;
}

.article-card a {
  font-weight: 500;
  font-size: 0.92rem;
  color: var(--text);
  letter-spacing: 0.02em;
}

.article-card a:hover {
  color: var(--accent);
  text-decoration: none;
}

.article-card p {
  margin: 0.3rem 0 0;
  font-size: 0.78rem;
  color: var(--text-dim);
  line-height: 1.5;
}

/* ============================================================
   ANIMATIONS
   ============================================================ */

@keyframes fadeUp {
  from { opacity: 0; transform: translateY(18px); }
  to   { opacity: 1; transform: translateY(0); }
}

@keyframes fadeIn {
  from { opacity: 0; }
  to   { opacity: 1; }
}

/* ============================================================
   RESPONSIVE
   ============================================================ */

@media (max-width: 640px) {
  main {
    padding: 2rem 1.25rem 5rem;
  }

  h1 { font-size: 2rem; }
  h2 { font-size: 0.72rem; }

  pre {
    padding: 1rem;
    border-radius: 3px;
  }

  header {
    padding: 0 1.25rem;
  }

  header h1 {
    font-size: 1.1rem;
  }

  .corner { display: none; }
  .status { display: none; }
}