/* ============================================================
   CYBERVORN — Design System
   Dark-first cybersecurity knowledge portal
   ============================================================ */

@import url('https://fonts.googleapis.com/css2?family=IBM+Plex+Mono:wght@400;500;600;700&family=Manrope:wght@400;500;600;700;800&display=swap');

:root{
  /* -------- dark theme (default) -------- */
  --bg: #05080a;
  --bg-alt: #0a0f13;
  --surface: rgba(18, 26, 30, 0.55);
  --surface-solid: #0d1417;
  --border: rgba(0, 255, 194, 0.14);
  --border-strong: rgba(0, 255, 194, 0.35);
  --text: #d9e7e5;
  --text-dim: #7e9a96;
  --text-faint: #4d6864;
  --accent: #00ffc2;
  --accent-2: #00b3ff;
  --accent-3: #ff3d6e;
  --accent-warn: #ffb020;
  --accent-danger: #ff3d3d;
  --grid-line: rgba(0, 255, 194, 0.055);
  --glow: 0 0 40px rgba(0, 255, 194, 0.15);
  --shadow: 0 20px 60px rgba(0,0,0,0.55);
  --radius: 16px;
  --radius-sm: 10px;
  --font-display: 'IBM Plex Mono', 'Courier New', monospace;
  --font-body: 'Manrope', -apple-system, sans-serif;
  --maxw: 1240px;
}

html[data-theme="light"]{
  --bg: #f3f7f6;
  --bg-alt: #e9f2f0;
  --surface: rgba(255, 255, 255, 0.65);
  --surface-solid: #ffffff;
  --border: rgba(0, 120, 100, 0.16);
  --border-strong: rgba(0, 120, 100, 0.4);
  --text: #0c2321;
  --text-dim: #3d5a56;
  --text-faint: #6d8985;
  --accent: #00a884;
  --accent-2: #0078b3;
  --accent-3: #d81755;
  --accent-warn: #b8720a;
  --accent-danger: #c92a2a;
  --grid-line: rgba(0, 130, 110, 0.07);
  --glow: 0 0 40px rgba(0, 168, 132, 0.12);
  --shadow: 0 20px 60px rgba(0,0,0,0.08);
}

*,*::before,*::after{ box-sizing: border-box; }
html{ scroll-behavior: smooth; }
body{
  margin:0;
  background: var(--bg);
  color: var(--text);
  font-family: var(--font-body);
  font-size: 16px;
  line-height: 1.65;
  -webkit-font-smoothing: antialiased;
  overflow-x: hidden;
  transition: background .4s ease, color .4s ease;
}
h1,h2,h3,h4{
  font-family: var(--font-display);
  font-weight: 600;
  letter-spacing: -0.01em;
  line-height: 1.15;
  margin: 0 0 .5em;
  color: var(--text);
}
p{ color: var(--text-dim); margin: 0 0 1em; }
a{ color: inherit; text-decoration: none; }
img{ max-width:100%; display:block; }
ul{ padding: 0; margin: 0; list-style: none; }
button{ font-family: var(--font-body); cursor: pointer; }
code, pre { font-family: var(--font-display); }

::selection{ background: var(--accent); color: #001512; }

.container{ max-width: var(--maxw); margin: 0 auto; padding: 0 24px; }

/* -------- animated cyber grid background -------- */
.cyber-grid{
  position: fixed;
  inset: 0;
  z-index: -2;
  background-image:
    linear-gradient(var(--grid-line) 1px, transparent 1px),
    linear-gradient(90deg, var(--grid-line) 1px, transparent 1px);
  background-size: 42px 42px;
  animation: gridDrift 18s linear infinite;
  mask-image: radial-gradient(ellipse 80% 60% at 50% 0%, black 40%, transparent 90%);
}
@keyframes gridDrift{
  0%{ background-position: 0 0, 0 0; }
  100%{ background-position: 42px 42px, 42px 42px; }
}
.cyber-glow{
  position: fixed;
  inset: 0;
  z-index: -3;
  background: var(--bg);
}
.cyber-glow::before, .cyber-glow::after{
  content:'';
  position: absolute;
  width: 60vw; height: 60vw;
  border-radius: 50%;
  filter: blur(120px);
  opacity: .18;
}
.cyber-glow::before{
  background: var(--accent);
  top: -20%; left: -10%;
}
.cyber-glow::after{
  background: var(--accent-2);
  bottom: -25%; right: -10%;
}

/* -------- scanline / noise overlay -------- */
.noise-overlay{
  position: fixed; inset:0; z-index: -1; pointer-events:none;
  opacity: .035; mix-blend-mode: overlay;
  background-image: url("data:image/svg+xml,%3Csvg xmlns='http://www.w3.org/2000/svg' width='120' height='120'%3E%3Cfilter id='n'%3E%3CfeTurbulence type='fractalNoise' baseFrequency='0.85' numOctaves='2' stitchTiles='stitch'/%3E%3C/filter%3E%3Crect width='100%25' height='100%25' filter='url(%23n)'/%3E%3C/svg%3E");
}

/* ================= NAVBAR ================= */
.navbar{
  position: sticky; top:0; z-index: 200;
  backdrop-filter: blur(16px) saturate(140%);
  background: color-mix(in srgb, var(--bg) 78%, transparent);
  border-bottom: 1px solid var(--border);
}
.nav-inner{
  max-width: var(--maxw); margin: 0 auto; padding: 14px 24px;
  display:flex; align-items:center; justify-content: space-between; gap: 20px;
}
.brand{ display:flex; align-items:center; gap:10px; font-family: var(--font-display); font-weight:700; font-size: 1.2rem; letter-spacing: -0.02em; }
.brand svg{ width:28px; height:28px; }
.brand span.accent{ color: var(--accent); }

.nav-links{ display:flex; align-items:center; gap: 4px; list-style:none; }
.nav-links > li > a{
  display:block; padding: 8px 12px; font-size: .88rem; font-weight:600;
  color: var(--text-dim); border-radius: 8px; transition: all .25s ease;
  font-family: var(--font-display);
}
.nav-links > li > a:hover, .nav-links > li > a.active{ color: var(--accent); background: rgba(0,255,194,0.07); }

.nav-more{ position: relative; }
.nav-more-panel{
  position:absolute; top: calc(100% + 12px); right:0;
  min-width: 620px;
  background: var(--surface-solid);
  border: 1px solid var(--border);
  border-radius: var(--radius);
  padding: 18px;
  display: grid; grid-template-columns: repeat(2, 1fr); gap: 4px 18px;
  box-shadow: var(--shadow);
  opacity:0; visibility:hidden; transform: translateY(-8px);
  transition: all .22s ease;
}
.nav-more:hover .nav-more-panel, .nav-more:focus-within .nav-more-panel{
  opacity:1; visibility:visible; transform: translateY(0);
}
.nav-more-panel a{
  display:flex; align-items:center; gap:8px; padding: 9px 10px; border-radius: 8px;
  font-size: .86rem; color: var(--text-dim); transition: all .2s ease;
}
.nav-more-panel a:hover{ background: rgba(0,255,194,0.08); color: var(--accent); padding-left: 14px; }

.nav-actions{ display:flex; align-items:center; gap: 10px; }
.icon-btn{
  width: 38px; height:38px; border-radius: 10px; border: 1px solid var(--border);
  background: var(--surface); display:flex; align-items:center; justify-content:center;
  color: var(--text-dim); transition: all .2s ease;
}
.icon-btn:hover{ color: var(--accent); border-color: var(--border-strong); box-shadow: var(--glow); }
.icon-btn svg{ width:18px; height:18px; }

.menu-toggle{ display:none; }

/* ================= SEARCH OVERLAY (UI only) ================= */
.search-overlay{
  position: fixed; inset:0; z-index: 500;
  background: color-mix(in srgb, var(--bg) 88%, transparent);
  backdrop-filter: blur(6px);
  display:flex; align-items:flex-start; justify-content:center;
  padding-top: 12vh;
  opacity:0; visibility:hidden; transition: all .25s ease;
}
.search-overlay.open{ opacity:1; visibility:visible; }
.search-box{
  width: min(640px, 92vw);
  background: var(--surface-solid); border:1px solid var(--border-strong);
  border-radius: var(--radius); padding: 20px; box-shadow: var(--shadow);
}
.search-box input{
  width:100%; background: transparent; border:none; outline:none;
  font-family: var(--font-display); font-size: 1.1rem; color: var(--text);
  border-bottom: 1px solid var(--border); padding-bottom: 14px; margin-bottom: 14px;
}
.search-hint{ font-size: .8rem; color: var(--text-faint); }
.search-tags{ display:flex; flex-wrap:wrap; gap:8px; margin-top:14px; }
.search-tags span{
  font-size: .76rem; padding: 5px 10px; border-radius: 999px; border:1px solid var(--border);
  color: var(--text-dim);
}

/* ================= BUTTONS ================= */
.btn{
  display:inline-flex; align-items:center; gap:8px; justify-content:center;
  padding: 13px 26px; border-radius: 10px; font-weight:700; font-size:.92rem;
  font-family: var(--font-display); border:1px solid transparent; transition: all .25s ease;
  white-space: nowrap;
}
.btn-primary{
  background: linear-gradient(135deg, var(--accent), var(--accent-2));
  color: #001c17; box-shadow: 0 10px 30px rgba(0,255,194,0.25);
}
.btn-primary:hover{ transform: translateY(-2px); box-shadow: 0 14px 36px rgba(0,255,194,0.4); }
.btn-outline{
  background: transparent; border-color: var(--border-strong); color: var(--text);
}
.btn-outline:hover{ border-color: var(--accent); color: var(--accent); background: rgba(0,255,194,0.06); }
.btn-sm{ padding: 8px 16px; font-size: .78rem; }

/* ================= HERO ================= */
.hero{ padding: 96px 0 70px; position: relative; }
.hero-badge{
  display:inline-flex; align-items:center; gap:8px; padding: 6px 14px;
  border: 1px solid var(--border-strong); border-radius: 999px; font-size:.78rem;
  font-family: var(--font-display); color: var(--accent); margin-bottom: 24px;
  background: rgba(0,255,194,0.06);
}
.hero-badge .dot{ width:7px; height:7px; border-radius:50%; background: var(--accent); box-shadow: 0 0 10px var(--accent); animation: pulse 2s infinite; }
@keyframes pulse{ 0%,100%{ opacity:1; } 50%{ opacity:.3; } }
.hero h1{ font-size: clamp(2.4rem, 5.5vw, 4.4rem); max-width: 900px; }
.hero h1 .grad{
  background: linear-gradient(120deg, var(--accent), var(--accent-2) 60%, var(--accent-3));
  -webkit-background-clip:text; background-clip:text; color:transparent;
}
.hero p.lead{ font-size: 1.15rem; max-width: 620px; margin-bottom: 34px; }
.hero-cta{ display:flex; gap:16px; flex-wrap:wrap; margin-bottom: 48px; }
.hero-stats{ display:flex; gap: 40px; flex-wrap:wrap; }
.hero-stats div strong{ display:block; font-family: var(--font-display); font-size: 1.7rem; color: var(--accent); }
.hero-stats div span{ font-size: .8rem; color: var(--text-faint); text-transform:uppercase; letter-spacing:.06em; }

.page-hero{ padding: 60px 0 40px; }
.page-hero h1{ font-size: clamp(2rem, 4.5vw, 3rem); }
.page-hero p{ max-width: 680px; font-size: 1.05rem; }

/* ================= SECTION HEADERS ================= */
.section{ padding: 76px 0; }
.section-tight{ padding: 40px 0; }
.section-head{ display:flex; align-items:flex-end; justify-content:space-between; gap: 20px; margin-bottom: 40px; flex-wrap: wrap; }
.eyebrow{ font-family: var(--font-display); color: var(--accent); font-size: .8rem; letter-spacing: .12em; text-transform: uppercase; margin-bottom: 10px; display:block; }
.section-head h2{ font-size: clamp(1.6rem, 3vw, 2.3rem); margin:0; }
.section-head p{ margin: 8px 0 0; max-width: 520px; }

/* ================= GLASS CARDS ================= */
.card{
  background: var(--surface);
  border: 1px solid var(--border);
  border-radius: var(--radius);
  padding: 26px;
  backdrop-filter: blur(14px);
  transition: transform .3s ease, box-shadow .3s ease, border-color .3s ease;
  position: relative;
  overflow: hidden;
}
.card::before{
  content:''; position:absolute; inset:0; border-radius: inherit; padding:1px;
  background: linear-gradient(135deg, transparent 40%, rgba(0,255,194,0.25));
  -webkit-mask: linear-gradient(#000 0 0) content-box, linear-gradient(#000 0 0);
  -webkit-mask-composite: xor; mask-composite: exclude;
  opacity:0; transition: opacity .3s ease;
}
.card:hover{ transform: translateY(-6px); box-shadow: var(--shadow), var(--glow); border-color: var(--border-strong); }
.card:hover::before{ opacity:1; }

.grid{ display:grid; gap: 22px; }
.grid-2{ grid-template-columns: repeat(2, 1fr); }
.grid-3{ grid-template-columns: repeat(3, 1fr); }
.grid-4{ grid-template-columns: repeat(4, 1fr); }

.icon-tile{
  width:48px; height:48px; border-radius: 12px; display:flex; align-items:center; justify-content:center;
  background: rgba(0,255,194,0.08); border: 1px solid var(--border); color: var(--accent); margin-bottom: 18px;
}
.icon-tile svg{ width:24px; height:24px; }
.card h3{ font-size: 1.08rem; margin-bottom: 8px; }
.card p{ font-size: .92rem; margin-bottom: 14px; }
.card-link{ font-size: .82rem; font-family: var(--font-display); color: var(--accent); display:inline-flex; align-items:center; gap:6px; }
.card-link svg{ width:14px; height:14px; transition: transform .2s ease; }
.card:hover .card-link svg{ transform: translateX(4px); }

/* ================= THREAT BADGES ================= */
.badge{
  display:inline-flex; align-items:center; gap:6px; font-family: var(--font-display);
  font-size: .7rem; font-weight:700; padding: 4px 10px; border-radius:6px; letter-spacing:.04em; text-transform:uppercase;
}
.badge::before{ content:''; width:6px; height:6px; border-radius:50%; }
.badge-critical{ color: var(--accent-danger); background: rgba(255,61,61,0.1); border:1px solid rgba(255,61,61,0.3); }
.badge-critical::before{ background: var(--accent-danger); }
.badge-high{ color: var(--accent-3); background: rgba(255,61,110,0.1); border:1px solid rgba(255,61,110,0.3); }
.badge-high::before{ background: var(--accent-3); }
.badge-medium{ color: var(--accent-warn); background: rgba(255,176,32,0.1); border:1px solid rgba(255,176,32,0.3); }
.badge-medium::before{ background: var(--accent-warn); }
.badge-low{ color: var(--accent); background: rgba(0,255,194,0.1); border:1px solid rgba(0,255,194,0.3); }
.badge-low::before{ background: var(--accent); }
.badge-info{ color: var(--accent-2); background: rgba(0,179,255,0.1); border:1px solid rgba(0,179,255,0.3); }
.badge-info::before{ background: var(--accent-2); }

/* ================= TAGS / CATEGORY FILTER UI ================= */
.tag{
  font-size: .72rem; font-family: var(--font-display); padding: 4px 10px; border-radius: 999px;
  border: 1px solid var(--border); color: var(--text-dim);
}
.filter-bar{ display:flex; flex-wrap:wrap; gap:10px; margin-bottom: 36px; }
.filter-chip{
  padding: 9px 18px; border-radius: 999px; border:1px solid var(--border); background: var(--surface);
  font-size: .82rem; font-family: var(--font-display); color: var(--text-dim); transition: all .2s ease;
}
.filter-chip:hover, .filter-chip.active{ color: var(--accent); border-color: var(--border-strong); background: rgba(0,255,194,0.08); }

/* ================= ARTICLE CARD ================= */
.article-card{ display:flex; flex-direction:column; }
.article-thumb{
  height: 150px; border-radius: 12px; margin-bottom: 18px; position:relative; overflow:hidden;
  background: linear-gradient(135deg, rgba(0,255,194,0.14), rgba(0,179,255,0.1));
  border: 1px solid var(--border);
}
.article-thumb::after{
  content:''; position:absolute; inset:0;
  background-image: linear-gradient(var(--grid-line) 1px, transparent 1px), linear-gradient(90deg, var(--grid-line) 1px, transparent 1px);
  background-size: 20px 20px;
}
.article-thumb .thumb-icon{ position:absolute; bottom:14px; right:14px; opacity:.5; }
.article-thumb .thumb-icon svg{ width:34px; height:34px; color: var(--accent); }
.article-meta{ display:flex; gap:14px; font-size:.76rem; color: var(--text-faint); margin-bottom:10px; align-items:center; flex-wrap:wrap; }
.article-meta span{ display:flex; align-items:center; gap:5px; }
.article-tags{ display:flex; gap:8px; margin-bottom: 14px; flex-wrap:wrap; }

/* ================= CODE BLOCK ================= */
.code-block{
  background: #060a0b; border: 1px solid var(--border); border-radius: 12px; overflow:hidden; margin: 22px 0;
}
html[data-theme="light"] .code-block{ background: #0d1b19; }
.code-block-head{
  display:flex; align-items:center; justify-content:space-between; padding: 10px 16px;
  background: rgba(255,255,255,0.03); border-bottom: 1px solid var(--border);
}
.code-dots{ display:flex; gap:6px; }
.code-dots span{ width:10px; height:10px; border-radius:50%; }
.code-dots span:nth-child(1){ background:#ff5f56; }
.code-dots span:nth-child(2){ background:#ffbd2e; }
.code-dots span:nth-child(3){ background:#27c93f; }
.code-block-label{ font-family: var(--font-display); font-size:.75rem; color: var(--text-faint); }
.copy-btn{
  display:flex; align-items:center; gap:6px; font-size:.72rem; font-family: var(--font-display);
  color: var(--text-dim); background:transparent; border:1px solid var(--border); border-radius:6px; padding: 5px 10px;
  transition: all .2s ease;
}
.copy-btn:hover{ color: var(--accent); border-color: var(--border-strong); }
.copy-btn svg{ width:13px; height:13px; }
.code-block pre{ margin:0; padding: 18px 20px; overflow-x:auto; font-size: .85rem; line-height:1.7; color: #9df7d8; }
.code-block code{ color: inherit; }
.code-block .cm{ color: #55736e; }
.code-block .kw{ color: #00b3ff; }
.code-block .str{ color: #ffb020; }

/* ================= BREADCRUMBS ================= */
.breadcrumbs{ display:flex; align-items:center; gap:8px; font-size:.82rem; color: var(--text-faint); margin-bottom: 26px; flex-wrap:wrap; font-family: var(--font-display); }
.breadcrumbs a{ color: var(--text-dim); }
.breadcrumbs a:hover{ color: var(--accent); }
.breadcrumbs span.sep{ opacity:.5; }
.breadcrumbs span.current{ color: var(--accent); }

/* ================= ARTICLE / TUTORIAL BODY ================= */
.article-header{ padding: 50px 0 20px; }
.article-header h1{ font-size: clamp(1.9rem, 4vw, 2.9rem); max-width: 820px; }
.article-body{ padding-bottom: 60px; }
.article-layout{ display:grid; grid-template-columns: 1fr 260px; gap: 50px; align-items:start; }
.prose{ max-width: 760px; }
.prose h2{ font-size: 1.5rem; margin-top: 2.2em; }
.prose h3{ font-size: 1.15rem; margin-top: 1.6em; color: var(--accent); }
.prose p{ color: var(--text-dim); font-size: 1rem; }
.prose ul, .prose ol{ margin: 0 0 1.4em; padding-left: 1.4em; color: var(--text-dim); }
.prose ul{ list-style: disc; }
.prose ol{ list-style: decimal; }
.prose li{ margin-bottom: .5em; }
.prose blockquote{
  border-left: 3px solid var(--accent); padding: 14px 20px; margin: 24px 0;
  background: var(--surface); border-radius: 0 10px 10px 0; color: var(--text);
}
.callout{
  display:flex; gap:14px; padding: 18px 20px; border-radius: 12px; margin: 26px 0;
  border:1px solid var(--border); background: var(--surface);
}
.callout svg{ width:22px; height:22px; flex-shrink:0; color: var(--accent); margin-top:2px; }
.callout.warn{ border-color: rgba(255,176,32,0.3); }
.callout.warn svg{ color: var(--accent-warn); }
.callout p{ margin:0; font-size:.92rem; }

.sidebar-box{
  background: var(--surface); border:1px solid var(--border); border-radius: var(--radius);
  padding: 22px; margin-bottom: 22px; position: sticky; top: 100px;
}
.sidebar-box h4{ font-size: .8rem; text-transform:uppercase; letter-spacing:.08em; color: var(--accent); margin-bottom: 14px; }
.toc-list a{
  display:block; padding: 7px 0; font-size:.86rem; color: var(--text-dim); border-left: 2px solid transparent; padding-left: 12px;
  transition: all .2s ease;
}
.toc-list a:hover{ color: var(--accent); border-color: var(--accent); }
.author-box{ display:flex; align-items:center; gap:12px; }
.author-avatar{
  width:42px; height:42px; border-radius:50%;
  background: linear-gradient(135deg, var(--accent), var(--accent-2)); flex-shrink:0;
  display:flex; align-items:center; justify-content:center; font-family:var(--font-display); font-weight:700; color:#00201b;
}
.author-name{ font-size:.88rem; font-weight:700; color: var(--text); font-family: var(--font-display); }
.author-role{ font-size: .76rem; color: var(--text-faint); }

/* ================= FAQ ================= */
.faq-item{
  border: 1px solid var(--border); border-radius: 12px; margin-bottom: 12px; overflow:hidden;
  background: var(--surface);
}
.faq-q{
  display:flex; align-items:center; justify-content:space-between; padding: 18px 22px; cursor:pointer;
  font-family: var(--font-display); font-weight:600; font-size: .96rem;
}
.faq-q .plus{ font-size: 1.3rem; color: var(--accent); transition: transform .3s ease; flex-shrink:0; margin-left: 16px; }
.faq-item.open .plus{ transform: rotate(45deg); }
.faq-a{ max-height:0; overflow:hidden; transition: max-height .35s ease; }
.faq-item.open .faq-a{ max-height: 300px; }
.faq-a p{ padding: 0 22px 20px; font-size: .92rem; margin:0; }

/* ================= NEWSLETTER ================= */
.newsletter{
  border-radius: 24px; padding: 56px; text-align:center; position:relative; overflow:hidden;
  background: linear-gradient(135deg, rgba(0,255,194,0.08), rgba(0,179,255,0.06));
  border: 1px solid var(--border-strong);
}
.newsletter h2{ font-size: clamp(1.5rem, 3vw, 2.1rem); }
.newsletter p{ max-width: 480px; margin: 0 auto 26px; }
.newsletter-form{ display:flex; gap: 12px; max-width: 460px; margin: 0 auto; flex-wrap:wrap; justify-content:center; }
.newsletter-form input{
  flex:1; min-width:220px; padding: 13px 18px; border-radius:10px; border:1px solid var(--border-strong);
  background: var(--surface-solid); color: var(--text); font-family: var(--font-body); outline:none;
}
.newsletter-note{ font-size: .74rem; color: var(--text-faint); margin-top: 14px; }

/* ================= FORMS (contact) ================= */
.form-grid{ display:grid; grid-template-columns: 1fr 1fr; gap: 18px; }
.field{ display:flex; flex-direction:column; gap:8px; margin-bottom: 18px; }
.field.full{ grid-column: 1 / -1; }
.field label{ font-size:.82rem; font-family: var(--font-display); color: var(--text-dim); }
.field input, .field select, .field textarea{
  padding: 13px 16px; border-radius:10px; border:1px solid var(--border); background: var(--surface-solid);
  color: var(--text); font-family: var(--font-body); outline:none; transition: border-color .2s ease;
}
.field input:focus, .field select:focus, .field textarea:focus{ border-color: var(--accent); }
.form-note{
  display:flex; gap:10px; align-items:flex-start; padding: 16px 18px; border-radius:10px; margin-bottom: 26px;
  background: rgba(255,176,32,0.07); border: 1px solid rgba(255,176,32,0.28);
}
.form-note svg{ width:20px; height:20px; color: var(--accent-warn); flex-shrink:0; }
.form-note p{ margin:0; font-size:.86rem; color: var(--text); }

/* ================= FOOTER ================= */
footer{ border-top: 1px solid var(--border); padding: 64px 0 30px; margin-top: 60px; }
.footer-grid{ display:grid; grid-template-columns: 1.4fr repeat(4, 1fr); gap: 32px; margin-bottom: 46px; }
.footer-col h4{ font-family: var(--font-display); font-size:.82rem; text-transform:uppercase; letter-spacing:.08em; color: var(--accent); margin-bottom: 16px; }
.footer-col a{ display:block; font-size: .87rem; color: var(--text-dim); padding: 5px 0; transition: color .2s ease; }
.footer-col a:hover{ color: var(--accent); }
.footer-brand p{ font-size: .87rem; max-width: 280px; }
.footer-social{ display:flex; gap:10px; margin-top: 18px; }
.footer-bottom{
  display:flex; justify-content:space-between; align-items:center; padding-top: 26px; border-top: 1px solid var(--border);
  font-size: .8rem; color: var(--text-faint); flex-wrap:wrap; gap: 12px;
}
.footer-bottom .legal-links{ display:flex; gap:20px; }
.footer-bottom a:hover{ color: var(--accent); }

/* ================= SCROLL REVEAL ================= */
.reveal{ opacity:0; transform: translateY(28px); transition: opacity .7s ease, transform .7s ease; }
.reveal.visible{ opacity:1; transform: translateY(0); }
.reveal-delay-1{ transition-delay: .08s; }
.reveal-delay-2{ transition-delay: .16s; }
.reveal-delay-3{ transition-delay: .24s; }
.reveal-delay-4{ transition-delay: .32s; }

/* ================= GLOSSARY ================= */
.glossary-letter{ font-family: var(--font-display); color: var(--accent); font-size: 1.4rem; margin: 34px 0 14px; }
.glossary-item{ padding: 16px 0; border-bottom: 1px solid var(--border); }
.glossary-item dt{ font-family: var(--font-display); font-weight:700; color: var(--text); margin-bottom: 6px; }
.glossary-item dd{ margin:0; color: var(--text-dim); font-size: .92rem; }

/* ================= 404 ================= */
.error-page{ min-height: 70vh; display:flex; flex-direction:column; align-items:center; justify-content:center; text-align:center; padding: 60px 24px; }
.error-code{
  font-family: var(--font-display); font-size: clamp(5rem, 16vw, 10rem); font-weight:700; line-height:1;
  background: linear-gradient(120deg, var(--accent), var(--accent-2));
  -webkit-background-clip:text; background-clip:text; color:transparent;
}

/* ================= UTILS ================= */
.text-center{ text-align:center; }
.mt-0{ margin-top:0; } .mb-0{ margin-bottom:0; }
.flex{ display:flex; } .items-center{ align-items:center; } .gap-8{ gap:8px; } .gap-12{ gap:12px; }

/* ================= RESPONSIVE ================= */
@media (max-width: 980px){
  .grid-4{ grid-template-columns: repeat(2,1fr); }
  .grid-3{ grid-template-columns: repeat(2,1fr); }
  .footer-grid{ grid-template-columns: repeat(2,1fr); }
  .article-layout{ grid-template-columns: 1fr; }
  .sidebar-box{ position: static; }
}
@media (max-width: 760px){
  .nav-links{
    position: fixed; top: 66px; left:0; right:0; bottom:0; z-index: 190;
    background: var(--bg); flex-direction:column; align-items:stretch; padding: 20px;
    transform: translateX(100%); transition: transform .3s ease; overflow-y:auto;
  }
  .nav-links.open{ transform: translateX(0); }
  .nav-links > li{ width:100%; }
  .nav-links > li > a{ padding: 14px 10px; font-size: 1rem; border-bottom: 1px solid var(--border); border-radius:0; }
  .nav-more-panel{ position:static; opacity:1; visibility:visible; transform:none; box-shadow:none; border:none; grid-template-columns: 1fr; display:none; }
  .nav-more.open .nav-more-panel{ display:grid; }
  .menu-toggle{ display:flex; }
  .grid-2, .grid-3, .grid-4{ grid-template-columns: 1fr; }
  .footer-grid{ grid-template-columns: repeat(2,1fr); }
  .form-grid{ grid-template-columns: 1fr; }
  .hero{ padding: 60px 0 40px; }
}