/* ===== news.occp.ai — Design System v1.0 ===== */
/* Matches OCCP landing retro-terminal aesthetic */

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

:root {
  --bg:           #0a0a0a;
  --bg-card:      #111111;
  --bg-terminal:  #0d1117;
  --bg-article:   #0e0e0e;
  --border-card:  #222222;
  --border-term:  #30363d;
  --green:        #33ff33;
  --green-dim:    #1a8c1a;
  --green-glow:   rgba(51, 255, 51, 0.15);
  --amber:        #ffb000;
  --amber-dim:    #8a6000;
  --amber-glow:   rgba(255, 176, 0, 0.12);
  --blue:         #60a5fa;
  --purple:       #a78bfa;
  --red:          #f87171;
  --text:         #e5e5e5;
  --text-sec:     #9ca3af;
  --text-muted:   #6b7280;
  --text-bright:  #ffffff;
  --font:         'IBM Plex Mono', 'Courier New', 'Lucida Console', monospace;
  --max-w:        1200px;
  --max-w-article: 820px;
}

html { scroll-behavior: smooth; }

body {
  font-family: var(--font);
  background-color: var(--bg);
  color: var(--text);
  font-size: 15px;
  line-height: 1.75;
  overflow-x: hidden;
  -webkit-font-smoothing: antialiased;
}

/* ===== CRT Overlay ===== */
body::before {
  content: '';
  position: fixed;
  top: 0; left: 0;
  width: 100%; height: 100%;
  background: repeating-linear-gradient(0deg, transparent, transparent 2px, rgba(0,0,0,0.04) 2px, rgba(0,0,0,0.04) 4px);
  pointer-events: none;
  z-index: 9999;
}
body::after {
  content: '';
  position: fixed;
  top: 0; left: 0;
  width: 100%; height: 100%;
  background: radial-gradient(ellipse at center, transparent 60%, rgba(0,0,0,0.4) 100%);
  pointer-events: none;
  z-index: 9998;
}

/* ===== Keyframes ===== */
@keyframes blink { 0%,49%{opacity:1} 50%,100%{opacity:0} }
@keyframes fadeInUp { from{opacity:0;transform:translateY(16px)} to{opacity:1;transform:translateY(0)} }
@keyframes glow-pulse {
  0%,100%{box-shadow:0 0 8px var(--green-glow)} 50%{box-shadow:0 0 20px var(--green-glow)}
}

.cursor {
  display: inline-block;
  width: 0.6em; height: 1.1em;
  background: var(--green);
  vertical-align: text-bottom;
  animation: blink 1s step-end infinite;
  box-shadow: 0 0 6px var(--green);
}

/* ===== Links ===== */
a { color: var(--blue); text-decoration: none; transition: color .2s }
a:hover { color: var(--green); }

/* ===== Header / Nav ===== */
.site-header {
  border-bottom: 1px solid var(--border-card);
  padding: 1.25rem 0;
  position: sticky;
  top: 0;
  background: rgba(10,10,10,0.95);
  backdrop-filter: blur(8px);
  z-index: 100;
}
.header-inner {
  max-width: var(--max-w);
  margin: 0 auto;
  padding: 0 1.5rem;
  display: flex;
  align-items: center;
  justify-content: space-between;
}
.site-logo {
  font-size: 1rem;
  font-weight: 700;
  color: var(--green);
  letter-spacing: 0.05em;
  text-transform: uppercase;
}
.site-logo span { color: var(--text-muted); font-weight: 400; }
nav a {
  color: var(--text-sec);
  font-size: 0.8rem;
  text-transform: uppercase;
  letter-spacing: 0.08em;
  margin-left: 1.5rem;
  transition: color .2s;
}
nav a:hover { color: var(--green); }
nav a.active { color: var(--green); }

/* ===== Hero (Index) ===== */
.news-hero {
  max-width: var(--max-w);
  margin: 0 auto;
  padding: 3rem 1.5rem 2rem;
  border-bottom: 1px solid var(--border-card);
}
.news-hero h1 {
  font-size: 1.5rem;
  color: var(--green);
  font-weight: 600;
  margin-bottom: 0.5rem;
}
.news-hero p {
  color: var(--text-sec);
  font-size: 0.9rem;
  max-width: 700px;
}

/* ===== Filter Bar ===== */
.filter-bar {
  max-width: var(--max-w);
  margin: 0 auto;
  padding: 1.25rem 1.5rem;
  display: flex;
  gap: 0.5rem;
  flex-wrap: wrap;
}
.filter-btn {
  background: var(--bg-card);
  border: 1px solid var(--border-card);
  color: var(--text-sec);
  font-family: var(--font);
  font-size: 0.75rem;
  padding: 0.35rem 0.75rem;
  cursor: pointer;
  text-transform: uppercase;
  letter-spacing: 0.05em;
  transition: all .2s;
}
.filter-btn:hover, .filter-btn.active {
  border-color: var(--green);
  color: var(--green);
  background: rgba(51,255,51,0.05);
}

/* ===== Article Grid ===== */
.articles-grid {
  max-width: var(--max-w);
  margin: 0 auto;
  padding: 1.5rem;
  display: grid;
  grid-template-columns: repeat(auto-fill, minmax(340px, 1fr));
  gap: 1.25rem;
}

/* ===== Article Card ===== */
.article-card {
  background: var(--bg-card);
  border: 1px solid var(--border-card);
  padding: 1.5rem;
  transition: all .3s ease;
  animation: fadeInUp .4s ease forwards;
  display: flex;
  flex-direction: column;
}
.article-card:hover {
  border-color: var(--green-dim);
  box-shadow: 0 0 12px var(--green-glow);
  transform: translateY(-2px);
}
.card-meta {
  display: flex;
  align-items: center;
  gap: 0.75rem;
  margin-bottom: 0.75rem;
  flex-wrap: wrap;
}
.card-date {
  font-size: 0.7rem;
  color: var(--text-muted);
  text-transform: uppercase;
  letter-spacing: 0.05em;
}
.card-tag {
  font-size: 0.65rem;
  padding: 0.15rem 0.5rem;
  text-transform: uppercase;
  letter-spacing: 0.05em;
  font-weight: 600;
}
.tag-milestone { background: rgba(51,255,51,0.1); color: var(--green); border: 1px solid var(--green-dim); }
.tag-security { background: rgba(248,113,113,0.1); color: var(--red); border: 1px solid rgba(248,113,113,0.3); }
.tag-architecture { background: rgba(96,165,250,0.1); color: var(--blue); border: 1px solid rgba(96,165,250,0.3); }
.tag-agent { background: rgba(167,139,250,0.1); color: var(--purple); border: 1px solid rgba(167,139,250,0.3); }
.tag-infra { background: rgba(255,176,0,0.1); color: var(--amber); border: 1px solid var(--amber-dim); }
.tag-vision { background: rgba(52,211,153,0.1); color: #34d399; border: 1px solid rgba(52,211,153,0.3); }
.tag-ux { background: rgba(244,114,182,0.1); color: #f472b6; border: 1px solid rgba(244,114,182,0.3); }
.tag-governance { background: rgba(251,191,36,0.1); color: #fbbf24; border: 1px solid rgba(251,191,36,0.3); }

.card-version {
  font-size: 0.65rem;
  color: var(--amber);
  font-weight: 600;
}
.card-title {
  font-size: 1rem;
  font-weight: 600;
  color: var(--text-bright);
  line-height: 1.4;
  margin-bottom: 0.5rem;
}
.card-title a { color: inherit; }
.card-title a:hover { color: var(--green); }
.card-excerpt {
  font-size: 0.82rem;
  color: var(--text-sec);
  line-height: 1.6;
  flex: 1;
  margin-bottom: 0.75rem;
}
.card-footer {
  display: flex;
  justify-content: space-between;
  align-items: center;
  font-size: 0.7rem;
  color: var(--text-muted);
  border-top: 1px solid var(--border-card);
  padding-top: 0.75rem;
}
.read-time::before { content: "// "; color: var(--green-dim); }

/* ===== Article Page ===== */
.article-container {
  max-width: var(--max-w-article);
  margin: 0 auto;
  padding: 2.5rem 1.5rem 4rem;
}
.article-header {
  margin-bottom: 2.5rem;
  padding-bottom: 1.5rem;
  border-bottom: 1px solid var(--border-card);
}
.article-header .card-meta { margin-bottom: 1rem; }
.article-header h1 {
  font-size: 1.6rem;
  color: var(--text-bright);
  font-weight: 700;
  line-height: 1.35;
  margin-bottom: 0.75rem;
}
.article-header .lead {
  font-size: 0.95rem;
  color: var(--text-sec);
  line-height: 1.7;
}

/* Article Body */
.article-body h2 {
  font-size: 1.15rem;
  color: var(--green);
  margin: 2rem 0 0.75rem;
  padding-bottom: 0.4rem;
  border-bottom: 1px solid var(--border-card);
}
.article-body h3 {
  font-size: 1rem;
  color: var(--amber);
  margin: 1.5rem 0 0.5rem;
}
.article-body p {
  margin-bottom: 1rem;
  color: var(--text);
  font-size: 0.92rem;
  line-height: 1.8;
}
.article-body ul, .article-body ol {
  margin: 0.75rem 0 1rem 1.5rem;
  color: var(--text);
  font-size: 0.9rem;
}
.article-body li { margin-bottom: 0.35rem; }
.article-body code {
  background: var(--bg-terminal);
  border: 1px solid var(--border-term);
  padding: 0.15rem 0.4rem;
  font-size: 0.85rem;
  color: var(--green);
}
.article-body pre {
  background: var(--bg-terminal);
  border: 1px solid var(--border-term);
  padding: 1rem 1.25rem;
  overflow-x: auto;
  margin: 1rem 0;
  font-size: 0.82rem;
  line-height: 1.6;
  color: var(--text);
}
.article-body blockquote {
  border-left: 3px solid var(--green-dim);
  padding: 0.75rem 1rem;
  margin: 1rem 0;
  background: rgba(51,255,51,0.03);
  color: var(--text-sec);
  font-size: 0.88rem;
  font-style: italic;
}
.article-body strong { color: var(--text-bright); }

/* Summary Box */
.summary-box {
  background: var(--bg-terminal);
  border: 1px solid var(--green-dim);
  padding: 1.25rem 1.5rem;
  margin: 2rem 0;
}
.summary-box h3 {
  color: var(--green);
  font-size: 0.85rem;
  text-transform: uppercase;
  letter-spacing: 0.08em;
  margin-bottom: 0.75rem;
}
.summary-box ul {
  list-style: none;
  margin: 0;
  padding: 0;
}
.summary-box li {
  color: var(--text-sec);
  font-size: 0.85rem;
  padding: 0.25rem 0;
}
.summary-box li::before {
  content: ">";
  color: var(--green);
  margin-right: 0.5rem;
  font-weight: 700;
}

/* Article Nav */
.article-nav {
  display: flex;
  justify-content: space-between;
  margin-top: 3rem;
  padding-top: 1.5rem;
  border-top: 1px solid var(--border-card);
  font-size: 0.8rem;
}
.article-nav a { color: var(--text-sec); }
.article-nav a:hover { color: var(--green); }

/* ===== Footer ===== */
.site-footer {
  border-top: 1px solid var(--border-card);
  padding: 2rem 1.5rem;
  text-align: center;
  color: var(--text-muted);
  font-size: 0.75rem;
}
.site-footer a { color: var(--text-sec); }

/* ===== Responsive ===== */
@media (max-width: 768px) {
  .articles-grid { grid-template-columns: 1fr; }
  .news-hero h1 { font-size: 1.25rem; }
  .article-header h1 { font-size: 1.3rem; }
  .header-inner { flex-direction: column; gap: 0.75rem; }
  nav a { margin-left: 0.75rem; }
}

/* ===== Pagination ===== */
.pagination {
  max-width: var(--max-w);
  margin: 0 auto;
  padding: 2rem 1.5rem;
  display: flex;
  justify-content: center;
  gap: 0.5rem;
}
.page-btn {
  background: var(--bg-card);
  border: 1px solid var(--border-card);
  color: var(--text-sec);
  font-family: var(--font);
  font-size: 0.75rem;
  padding: 0.4rem 0.8rem;
  cursor: pointer;
  transition: all .2s;
}
.page-btn:hover, .page-btn.active {
  border-color: var(--green);
  color: var(--green);
}

/* ===== Year Divider ===== */
.year-divider {
  max-width: var(--max-w);
  margin: 0 auto;
  padding: 1.5rem 1.5rem 0.5rem;
  font-size: 0.8rem;
  color: var(--green-dim);
  text-transform: uppercase;
  letter-spacing: 0.1em;
  border-top: 1px solid var(--border-card);
}
.year-divider span { color: var(--green); font-weight: 700; }