/* ============================================
   AiLumin News — Main Stylesheet
   Design DNA: Archive × Pulse Hybrid
   ailuminnews.online
   ============================================ */

@import url('https://fonts.googleapis.com/css2?family=Space+Mono:ital,wght@0,400;0,700;1,400&family=DM+Sans:ital,opsz,wght@0,9..40,300;0,9..40,400;0,9..40,500;0,9..40,600;0,9..40,700;1,9..40,400&family=DM+Serif+Display:ital@0;1&display=swap');

/* ── CSS Custom Properties (Stitch Token Set) ── */
:root {
  /* Colors */
  --c-bg:          #080C14;
  --c-surface:     #0E1520;
  --c-surface-2:   #131C2E;
  --c-surface-3:   #1A2540;
  --c-border:      #1E2D47;
  --c-border-glow: rgba(0, 229, 255, 0.25);

  --c-cyan:        #00E5FF;
  --c-cyan-dim:    rgba(0, 229, 255, 0.12);
  --c-cyan-mid:    rgba(0, 229, 255, 0.35);
  --c-violet:      #7B61FF;
  --c-violet-dim:  rgba(123, 97, 255, 0.12);
  --c-orange:      #FF6B35;
  --c-orange-dim:  rgba(255, 107, 53, 0.12);
  --c-green:       #00D68F;

  --c-text:        #F0F4FF;
  --c-text-muted:  #6B7A99;
  --c-text-dim:    #3D4F6E;

  /* Typography */
  --font-mono:  'Space Mono', monospace;
  --font-body:  'DM Sans', sans-serif;
  --font-serif: 'DM Serif Display', serif;

  /* Spacing */
  --space-xs:  0.25rem;
  --space-sm:  0.5rem;
  --space-md:  1rem;
  --space-lg:  1.5rem;
  --space-xl:  2rem;
  --space-2xl: 3rem;
  --space-3xl: 5rem;

  /* Layout */
  --max-w:       1200px;
  --max-w-prose: 720px;
  --radius-sm:   4px;
  --radius-md:   8px;
  --radius-lg:   16px;
  --radius-pill: 999px;

  /* Transitions */
  --t-fast:   0.15s ease;
  --t-normal: 0.25s ease;
  --t-slow:   0.4s ease;

  /* Shadows & Glows */
  --glow-cyan:   0 0 24px rgba(0, 229, 255, 0.3), 0 0 48px rgba(0, 229, 255, 0.1);
  --glow-violet: 0 0 24px rgba(123, 97, 255, 0.3);
  --shadow-card: 0 4px 24px rgba(0, 0, 0, 0.4), 0 1px 0 rgba(255,255,255,0.04) inset;
}

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

html {
  scroll-behavior: smooth;
  font-size: 16px;
  -webkit-text-size-adjust: 100%;
}

body {
  font-family: var(--font-body);
  background-color: var(--c-bg);
  color: var(--c-text);
  line-height: 1.7;
  overflow-x: hidden;
  -webkit-font-smoothing: antialiased;
}

/* Grid noise texture overlay */
body::before {
  content: '';
  position: fixed;
  inset: 0;
  background-image:
    linear-gradient(rgba(0,229,255,0.015) 1px, transparent 1px),
    linear-gradient(90deg, rgba(0,229,255,0.015) 1px, transparent 1px);
  background-size: 40px 40px;
  pointer-events: none;
  z-index: 0;
}

img { max-width: 100%; height: auto; display: block; }
a  { color: var(--c-cyan); text-decoration: none; transition: color var(--t-fast); }
a:hover { color: #fff; }

h1,h2,h3,h4,h5,h6 {
  font-family: var(--font-body);
  font-weight: 700;
  line-height: 1.25;
  letter-spacing: -0.02em;
}

p { margin-bottom: var(--space-md); }
ul, ol { padding-left: var(--space-xl); margin-bottom: var(--space-md); }
li { margin-bottom: var(--space-xs); }

/* ── Utility Classes ── */
.container { max-width: var(--max-w); margin: 0 auto; padding: 0 var(--space-lg); }
.prose-container { max-width: var(--max-w-prose); margin: 0 auto; padding: 0 var(--space-lg); }
.sr-only { position: absolute; width: 1px; height: 1px; overflow: hidden; clip: rect(0,0,0,0); }

.label {
  font-family: var(--font-mono);
  font-size: 0.65rem;
  font-weight: 700;
  letter-spacing: 0.15em;
  text-transform: uppercase;
  color: var(--c-cyan);
}

.badge {
  display: inline-flex;
  align-items: center;
  gap: 0.3em;
  padding: 0.2em 0.75em;
  border-radius: var(--radius-pill);
  font-family: var(--font-mono);
  font-size: 0.65rem;
  font-weight: 700;
  letter-spacing: 0.1em;
  text-transform: uppercase;
}
.badge-cyan   { background: var(--c-cyan-dim); color: var(--c-cyan); border: 1px solid var(--c-cyan-mid); }
.badge-violet { background: var(--c-violet-dim); color: var(--c-violet); border: 1px solid rgba(123,97,255,0.35); }
.badge-orange { background: var(--c-orange-dim); color: var(--c-orange); border: 1px solid rgba(255,107,53,0.35); }

/* ── Scan Line Animation ── */
@keyframes scanline {
  0%   { transform: translateY(-100%); }
  100% { transform: translateY(100vh); }
}
@keyframes pulse-glow {
  0%, 100% { opacity: 0.6; }
  50%       { opacity: 1; }
}
@keyframes blink {
  0%, 100% { opacity: 1; }
  50%       { opacity: 0; }
}
@keyframes float-up {
  from { opacity: 0; transform: translateY(16px); }
  to   { opacity: 1; transform: translateY(0); }
}
@keyframes ticker-scroll {
  0%   { transform: translateX(0); }
  100% { transform: translateX(-50%); }
}
@keyframes counter-up {
  from { opacity: 0; transform: translateY(8px); }
  to   { opacity: 1; transform: translateY(0); }
}

/* ── Navigation (Floating Island) ── */
#site-nav {
  position: fixed;
  top: var(--space-md);
  left: 50%;
  transform: translateX(-50%);
  z-index: 1000;
  width: calc(100% - 2rem);
  max-width: 900px;
}

.nav-island {
  display: flex;
  align-items: center;
  justify-content: space-between;
  padding: 0.6rem 1.25rem;
  background: rgba(14, 21, 32, 0.85);
  backdrop-filter: blur(20px) saturate(180%);
  -webkit-backdrop-filter: blur(20px) saturate(180%);
  border: 1px solid var(--c-border);
  border-radius: var(--radius-pill);
  box-shadow: 0 8px 32px rgba(0,0,0,0.5), 0 0 0 1px rgba(0,229,255,0.05);
  transition: box-shadow var(--t-normal);
}
.nav-island:hover { box-shadow: 0 8px 32px rgba(0,0,0,0.5), 0 0 0 1px rgba(0,229,255,0.15); }

.nav-logo {
  display: flex;
  align-items: center;
  gap: 0.6rem;
  font-family: var(--font-mono);
  font-size: 0.95rem;
  font-weight: 700;
  color: var(--c-text);
  letter-spacing: -0.01em;
}
.nav-logo span.accent { color: var(--c-cyan); }
.nav-logo-icon {
  width: 28px; height: 28px;
  background: linear-gradient(135deg, var(--c-cyan), var(--c-violet));
  border-radius: 6px;
  display: flex; align-items: center; justify-content: center;
  font-size: 0.7rem;
  font-weight: 700;
  color: #000;
}

.nav-links {
  display: flex;
  align-items: center;
  gap: 0.25rem;
  list-style: none;
  padding: 0; margin: 0;
}
.nav-links a {
  display: block;
  padding: 0.35rem 0.8rem;
  font-size: 0.82rem;
  font-weight: 500;
  color: var(--c-text-muted);
  border-radius: var(--radius-pill);
  transition: all var(--t-fast);
}
.nav-links a:hover, .nav-links a.active {
  color: var(--c-text);
  background: var(--c-surface-3);
}

.nav-cta {
  display: flex;
  align-items: center;
  gap: 0.75rem;
}
.btn-nav {
  padding: 0.4rem 1rem;
  background: var(--c-cyan);
  color: #000 !important;
  font-size: 0.78rem;
  font-weight: 700;
  border-radius: var(--radius-pill);
  font-family: var(--font-mono);
  letter-spacing: 0.05em;
  transition: all var(--t-fast);
}
.btn-nav:hover { background: #fff; box-shadow: var(--glow-cyan); }

.hamburger {
  display: none;
  flex-direction: column;
  gap: 4px;
  cursor: pointer;
  padding: 4px;
  background: none;
  border: none;
}
.hamburger span {
  display: block;
  width: 20px; height: 2px;
  background: var(--c-text-muted);
  border-radius: 2px;
  transition: all var(--t-fast);
}

/* Mobile nav drawer */
#mobile-nav {
  display: none;
  position: fixed;
  inset: 0;
  background: rgba(8,12,20,0.97);
  z-index: 999;
  flex-direction: column;
  align-items: center;
  justify-content: center;
  gap: 1.5rem;
}
#mobile-nav.open { display: flex; }
#mobile-nav a {
  font-family: var(--font-mono);
  font-size: 1.5rem;
  font-weight: 700;
  color: var(--c-text-muted);
  transition: color var(--t-fast);
}
#mobile-nav a:hover { color: var(--c-cyan); }
.mobile-nav-close {
  position: absolute;
  top: 1.5rem; right: 1.5rem;
  background: none; border: none;
  color: var(--c-text-muted);
  font-size: 1.5rem;
  cursor: pointer;
}

/* ── Trust Bar ── */
.trust-bar {
  background: var(--c-surface);
  border-bottom: 1px solid var(--c-border);
  padding: 0.45rem 0;
  text-align: center;
  font-family: var(--font-mono);
  font-size: 0.65rem;
  color: var(--c-text-muted);
  letter-spacing: 0.08em;
  margin-top: 60px;
}
.trust-bar span { color: var(--c-cyan); margin: 0 0.25rem; }
.trust-items { display: flex; justify-content: center; flex-wrap: wrap; gap: 1.5rem; }
.trust-item { display: flex; align-items: center; gap: 0.4rem; }
.trust-item::before { content: '✓'; color: var(--c-green); }

/* ── News Ticker ── */
.news-ticker {
  background: var(--c-surface-2);
  border-bottom: 1px solid var(--c-border);
  padding: 0.5rem 0;
  overflow: hidden;
  position: relative;
}
.ticker-label {
  position: absolute;
  left: 0; top: 0; bottom: 0;
  background: linear-gradient(90deg, var(--c-cyan), var(--c-violet));
  padding: 0 1rem;
  display: flex; align-items: center;
  font-family: var(--font-mono);
  font-size: 0.6rem;
  font-weight: 700;
  color: #000;
  letter-spacing: 0.1em;
  z-index: 2;
}
.ticker-track {
  display: flex;
  white-space: nowrap;
  animation: ticker-scroll 30s linear infinite;
  padding-left: 6rem;
}
.ticker-item {
  font-family: var(--font-mono);
  font-size: 0.72rem;
  color: var(--c-text-muted);
  padding: 0 3rem;
}
.ticker-item strong { color: var(--c-cyan); }

/* ── Hero — Bento Grid ── */
.hero-section {
  padding: calc(var(--space-3xl) + 2rem) 0 var(--space-3xl);
  position: relative;
  overflow: hidden;
}

.hero-glow {
  position: absolute;
  width: 600px; height: 600px;
  background: radial-gradient(circle, rgba(0,229,255,0.08) 0%, transparent 70%);
  top: -100px; left: -100px;
  pointer-events: none;
}
.hero-glow-2 {
  position: absolute;
  width: 400px; height: 400px;
  background: radial-gradient(circle, rgba(123,97,255,0.07) 0%, transparent 70%);
  top: 50%; right: -50px;
  pointer-events: none;
}

.bento-grid {
  display: grid;
  grid-template-columns: 2fr 1fr 1fr;
  grid-template-rows: auto auto;
  gap: 1rem;
}

.bento-card {
  background: var(--c-surface);
  border: 1px solid var(--c-border);
  border-radius: var(--radius-lg);
  padding: var(--space-xl);
  position: relative;
  overflow: hidden;
  transition: border-color var(--t-normal), transform var(--t-normal);
}
.bento-card:hover {
  border-color: var(--c-border-glow);
  transform: translateY(-2px);
}
.bento-card::before {
  content: '';
  position: absolute;
  inset: 0;
  background: linear-gradient(135deg, rgba(0,229,255,0.03) 0%, transparent 60%);
  pointer-events: none;
}

.bento-main {
  grid-column: 1;
  grid-row: 1 / 3;
  padding: var(--space-2xl);
}

.bento-stat {
  grid-column: 2;
  grid-row: 1;
  padding: var(--space-lg);
}
.bento-stat-2 {
  grid-column: 3;
  grid-row: 1;
  padding: var(--space-lg);
}
.bento-feature {
  grid-column: 2 / 4;
  grid-row: 2;
}

.hero-eyebrow {
  display: flex;
  align-items: center;
  gap: 0.5rem;
  margin-bottom: var(--space-lg);
}
.hero-dot {
  width: 8px; height: 8px;
  background: var(--c-cyan);
  border-radius: 50%;
  animation: pulse-glow 2s infinite;
  box-shadow: 0 0 8px var(--c-cyan);
}
.hero-status {
  font-family: var(--font-mono);
  font-size: 0.65rem;
  color: var(--c-cyan);
  letter-spacing: 0.12em;
  text-transform: uppercase;
}

.hero-title {
  font-size: clamp(2rem, 4vw, 3.2rem);
  font-weight: 700;
  line-height: 1.1;
  letter-spacing: -0.03em;
  margin-bottom: var(--space-lg);
}
.hero-title .gradient-text {
  background: linear-gradient(90deg, var(--c-cyan), var(--c-violet));
  -webkit-background-clip: text;
  -webkit-text-fill-color: transparent;
  background-clip: text;
}

.hero-desc {
  font-size: 1rem;
  color: var(--c-text-muted);
  max-width: 480px;
  margin-bottom: var(--space-xl);
  line-height: 1.8;
}

.hero-actions {
  display: flex;
  gap: 1rem;
  flex-wrap: wrap;
}

.btn-primary {
  display: inline-flex;
  align-items: center;
  gap: 0.5rem;
  padding: 0.75rem 1.5rem;
  background: var(--c-cyan);
  color: #000;
  font-weight: 700;
  font-size: 0.85rem;
  border-radius: var(--radius-pill);
  font-family: var(--font-mono);
  letter-spacing: 0.05em;
  transition: all var(--t-fast);
  border: none;
  cursor: pointer;
}
.btn-primary:hover { background: #fff; color: #000; box-shadow: var(--glow-cyan); }

.btn-secondary {
  display: inline-flex;
  align-items: center;
  gap: 0.5rem;
  padding: 0.75rem 1.5rem;
  background: transparent;
  color: var(--c-text);
  font-weight: 600;
  font-size: 0.85rem;
  border-radius: var(--radius-pill);
  border: 1px solid var(--c-border);
  transition: all var(--t-fast);
}
.btn-secondary:hover { border-color: var(--c-cyan); color: var(--c-cyan); }

/* Stat cards */
.stat-value {
  font-family: var(--font-mono);
  font-size: 2.2rem;
  font-weight: 700;
  color: var(--c-text);
  line-height: 1;
  margin-bottom: 0.25rem;
}
.stat-value span { color: var(--c-cyan); }
.stat-label { font-size: 0.75rem; color: var(--c-text-muted); }
.stat-delta {
  font-family: var(--font-mono);
  font-size: 0.65rem;
  color: var(--c-green);
  margin-top: 0.5rem;
}

/* Feature card in bento */
.bento-feature-inner {
  display: flex;
  align-items: center;
  gap: var(--space-xl);
  padding: var(--space-lg);
}
.feature-icon-wrap {
  width: 48px; height: 48px;
  background: var(--c-cyan-dim);
  border: 1px solid var(--c-cyan-mid);
  border-radius: var(--radius-md);
  display: flex; align-items: center; justify-content: center;
  flex-shrink: 0;
  font-size: 1.25rem;
}
.feature-text h3 { font-size: 0.95rem; margin-bottom: 0.25rem; }
.feature-text p  { font-size: 0.8rem; color: var(--c-text-muted); margin: 0; }

/* ── Section Styles ── */
section { padding: var(--space-3xl) 0; position: relative; }
.section-header { text-align: center; margin-bottom: var(--space-2xl); }
.section-label {
  font-family: var(--font-mono);
  font-size: 0.65rem;
  letter-spacing: 0.15em;
  text-transform: uppercase;
  color: var(--c-cyan);
  margin-bottom: var(--space-sm);
  display: block;
}
.section-title {
  font-size: clamp(1.6rem, 3vw, 2.2rem);
  font-weight: 700;
  letter-spacing: -0.02em;
  margin-bottom: var(--space-sm);
}
.section-desc { font-size: 1rem; color: var(--c-text-muted); max-width: 560px; margin: 0 auto; }

/* Divider */
.section-divider {
  height: 1px;
  background: linear-gradient(90deg, transparent, var(--c-border), transparent);
  margin: 0;
}

/* ── Article Cards ── */
.articles-grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 1.25rem;
}
.articles-grid.two-col { grid-template-columns: repeat(2, 1fr); }
.articles-grid.four-col { grid-template-columns: repeat(4, 1fr); }

.article-card {
  background: var(--c-surface);
  border: 1px solid var(--c-border);
  border-radius: var(--radius-lg);
  overflow: hidden;
  transition: all var(--t-normal);
  display: flex;
  flex-direction: column;
}
.article-card:hover {
  border-color: var(--c-border-glow);
  transform: translateY(-3px);
  box-shadow: var(--shadow-card);
}

.card-image {
  width: 100%;
  aspect-ratio: 16/9;
  overflow: hidden;
  background: var(--c-surface-3);
}
.card-image img { width: 100%; height: 100%; object-fit: cover; transition: transform var(--t-slow); }
.article-card:hover .card-image img { transform: scale(1.05); }

.card-body {
  padding: var(--space-lg);
  flex: 1;
  display: flex;
  flex-direction: column;
}

.card-meta {
  display: flex;
  align-items: center;
  gap: 0.75rem;
  margin-bottom: var(--space-sm);
  flex-wrap: wrap;
}

.card-title {
  font-size: 1rem;
  font-weight: 700;
  line-height: 1.4;
  letter-spacing: -0.01em;
  margin-bottom: 0.5rem;
  color: var(--c-text);
  flex: 1;
}
.article-card:hover .card-title { color: var(--c-cyan); }

.card-excerpt {
  font-size: 0.83rem;
  color: var(--c-text-muted);
  line-height: 1.65;
  margin-bottom: var(--space-md);
  flex: 1;
}

.card-footer {
  display: flex;
  align-items: center;
  justify-content: space-between;
  padding-top: var(--space-md);
  border-top: 1px solid var(--c-border);
  margin-top: auto;
}

.card-author {
  display: flex;
  align-items: center;
  gap: 0.5rem;
  font-size: 0.75rem;
  color: var(--c-text-muted);
}
.card-author img {
  width: 24px; height: 24px;
  border-radius: 50%;
  object-fit: cover;
}

.card-read-time {
  font-family: var(--font-mono);
  font-size: 0.65rem;
  color: var(--c-text-dim);
}

/* Featured card (first in grid) */
.article-card.featured {
  grid-column: 1 / -1;
  display: grid;
  grid-template-columns: 1fr 1fr;
}
.article-card.featured .card-image { aspect-ratio: unset; height: 100%; }
.article-card.featured .card-body { padding: var(--space-2xl); justify-content: center; }
.article-card.featured .card-title { font-size: 1.5rem; }

/* ── Categories Strip ── */
.categories-strip {
  background: var(--c-surface);
  border-top: 1px solid var(--c-border);
  border-bottom: 1px solid var(--c-border);
  padding: var(--space-lg) 0;
}
.categories-scroll {
  display: flex;
  gap: 0.75rem;
  overflow-x: auto;
  scrollbar-width: none;
  padding-bottom: 4px;
}
.categories-scroll::-webkit-scrollbar { display: none; }

.cat-pill {
  display: flex;
  align-items: center;
  gap: 0.4rem;
  padding: 0.5rem 1.1rem;
  background: var(--c-surface-3);
  border: 1px solid var(--c-border);
  border-radius: var(--radius-pill);
  font-size: 0.78rem;
  font-weight: 500;
  color: var(--c-text-muted);
  white-space: nowrap;
  transition: all var(--t-fast);
  cursor: pointer;
}
.cat-pill:hover, .cat-pill.active {
  background: var(--c-cyan-dim);
  border-color: var(--c-cyan-mid);
  color: var(--c-cyan);
}
.cat-pill .cat-icon { font-size: 0.9rem; }

/* ── Pillars / Topics Grid ── */
.pillars-grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 1rem;
}

.pillar-card {
  background: var(--c-surface);
  border: 1px solid var(--c-border);
  border-radius: var(--radius-lg);
  padding: var(--space-xl);
  position: relative;
  overflow: hidden;
  transition: all var(--t-normal);
  text-decoration: none;
  color: var(--c-text);
  display: block;
}
.pillar-card:hover {
  border-color: var(--c-border-glow);
  transform: translateY(-2px);
}
.pillar-card::after {
  content: '';
  position: absolute;
  bottom: 0; left: 0; right: 0;
  height: 2px;
  background: linear-gradient(90deg, var(--c-cyan), var(--c-violet));
  transform: scaleX(0);
  transform-origin: left;
  transition: transform var(--t-normal);
}
.pillar-card:hover::after { transform: scaleX(1); }

.pillar-icon {
  width: 44px; height: 44px;
  border-radius: var(--radius-md);
  display: flex; align-items: center; justify-content: center;
  font-size: 1.2rem;
  margin-bottom: var(--space-md);
}

.pillar-title {
  font-size: 1rem;
  font-weight: 700;
  margin-bottom: 0.4rem;
  letter-spacing: -0.01em;
}
.pillar-desc { font-size: 0.8rem; color: var(--c-text-muted); line-height: 1.6; margin: 0; }
.pillar-count {
  font-family: var(--font-mono);
  font-size: 0.62rem;
  color: var(--c-text-dim);
  margin-top: var(--space-md);
  display: block;
}

/* ── Authors Strip ── */
.authors-strip { background: var(--c-surface); border-radius: var(--radius-lg); padding: var(--space-2xl); }
.authors-grid { display: grid; grid-template-columns: repeat(4, 1fr); gap: 1rem; }

.author-card-sm {
  background: var(--c-surface-2);
  border: 1px solid var(--c-border);
  border-radius: var(--radius-lg);
  padding: var(--space-lg);
  text-align: center;
  transition: all var(--t-normal);
  text-decoration: none;
  color: var(--c-text);
  display: block;
}
.author-card-sm:hover { border-color: var(--c-border-glow); }
.author-card-sm img {
  width: 64px; height: 64px;
  border-radius: 50%;
  margin: 0 auto var(--space-md);
  border: 2px solid var(--c-border);
}
.author-card-sm:hover img { border-color: var(--c-cyan); }
.author-name-sm { font-size: 0.88rem; font-weight: 700; margin-bottom: 0.2rem; }
.author-role-sm { font-size: 0.72rem; color: var(--c-cyan); font-family: var(--font-mono); }
.author-bio-sm  { font-size: 0.75rem; color: var(--c-text-muted); margin-top: 0.5rem; line-height: 1.5; }

/* ── Newsletter CTA ── */
.newsletter-section {
  background: var(--c-surface);
  border: 1px solid var(--c-border);
  border-radius: var(--radius-lg);
  padding: var(--space-3xl) var(--space-2xl);
  text-align: center;
  position: relative;
  overflow: hidden;
}
.newsletter-glow {
  position: absolute;
  width: 500px; height: 300px;
  background: radial-gradient(ellipse, rgba(0,229,255,0.06) 0%, transparent 70%);
  top: 50%; left: 50%; transform: translate(-50%, -50%);
  pointer-events: none;
}
.newsletter-section h2 { font-size: 1.8rem; margin-bottom: 0.5rem; }
.newsletter-section p  { color: var(--c-text-muted); margin-bottom: var(--space-xl); }

.newsletter-form {
  display: flex;
  gap: 0.75rem;
  max-width: 460px;
  margin: 0 auto;
}
.newsletter-form input {
  flex: 1;
  padding: 0.75rem 1.25rem;
  background: var(--c-surface-3);
  border: 1px solid var(--c-border);
  border-radius: var(--radius-pill);
  color: var(--c-text);
  font-family: var(--font-body);
  font-size: 0.88rem;
  outline: none;
  transition: border-color var(--t-fast);
}
.newsletter-form input:focus { border-color: var(--c-cyan); }
.newsletter-form input::placeholder { color: var(--c-text-dim); }
.newsletter-form button {
  padding: 0.75rem 1.5rem;
  background: var(--c-cyan);
  border: none;
  border-radius: var(--radius-pill);
  color: #000;
  font-weight: 700;
  font-size: 0.82rem;
  font-family: var(--font-mono);
  cursor: pointer;
  transition: all var(--t-fast);
  white-space: nowrap;
}
.newsletter-form button:hover { background: #fff; box-shadow: var(--glow-cyan); }

/* ── Footer ── */
footer {
  background: var(--c-surface);
  border-top: 1px solid var(--c-border);
  padding: var(--space-3xl) 0 var(--space-xl);
}

.footer-grid {
  display: grid;
  grid-template-columns: 2fr 1fr 1fr 1fr;
  gap: var(--space-2xl);
  margin-bottom: var(--space-2xl);
}

.footer-brand .nav-logo { margin-bottom: var(--space-md); }
.footer-desc { font-size: 0.82rem; color: var(--c-text-muted); line-height: 1.7; margin-bottom: var(--space-md); }
.footer-address { font-family: var(--font-mono); font-size: 0.68rem; color: var(--c-text-dim); line-height: 1.8; }

.footer-col h4 {
  font-family: var(--font-mono);
  font-size: 0.65rem;
  letter-spacing: 0.12em;
  text-transform: uppercase;
  color: var(--c-cyan);
  margin-bottom: var(--space-md);
}
.footer-col ul { list-style: none; padding: 0; }
.footer-col ul li { margin-bottom: 0.5rem; }
.footer-col ul a { font-size: 0.82rem; color: var(--c-text-muted); transition: color var(--t-fast); }
.footer-col ul a:hover { color: var(--c-text); }

.footer-bottom {
  padding-top: var(--space-xl);
  border-top: 1px solid var(--c-border);
  display: flex;
  justify-content: space-between;
  align-items: center;
  flex-wrap: wrap;
  gap: var(--space-md);
}
.footer-copy { font-size: 0.75rem; color: var(--c-text-dim); font-family: var(--font-mono); }
.footer-legal { display: flex; gap: 1.5rem; }
.footer-legal a { font-size: 0.75rem; color: var(--c-text-dim); font-family: var(--font-mono); }
.footer-legal a:hover { color: var(--c-cyan); }

/* ── Article Page ── */
.article-hero {
  padding: 7rem 0 var(--space-2xl);
  background: var(--c-surface);
  border-bottom: 1px solid var(--c-border);
}
.article-breadcrumb {
  display: flex;
  align-items: center;
  gap: 0.5rem;
  font-family: var(--font-mono);
  font-size: 0.65rem;
  color: var(--c-text-dim);
  margin-bottom: var(--space-lg);
}
.article-breadcrumb a { color: var(--c-text-dim); }
.article-breadcrumb a:hover { color: var(--c-cyan); }
.article-breadcrumb .sep { color: var(--c-text-dim); }

.article-header-title {
  font-size: clamp(1.8rem, 4vw, 3rem);
  font-weight: 700;
  letter-spacing: -0.03em;
  line-height: 1.15;
  margin-bottom: var(--space-lg);
  max-width: 800px;
}

.article-meta-row {
  display: flex;
  align-items: center;
  gap: 1.5rem;
  flex-wrap: wrap;
}
.article-author-chip {
  display: flex;
  align-items: center;
  gap: 0.6rem;
}
.article-author-chip img { width: 36px; height: 36px; border-radius: 50%; border: 2px solid var(--c-border); }
.author-chip-name { font-size: 0.85rem; font-weight: 600; }
.author-chip-role { font-size: 0.72rem; color: var(--c-cyan); font-family: var(--font-mono); }
.article-date { font-family: var(--font-mono); font-size: 0.68rem; color: var(--c-text-dim); }
.article-read-time { font-family: var(--font-mono); font-size: 0.68rem; color: var(--c-text-dim); }

/* Article Layout */
.article-layout {
  display: grid;
  grid-template-columns: 1fr 280px;
  gap: var(--space-2xl);
  align-items: start;
  padding: var(--space-2xl) 0;
}

/* SGE Summary Block */
.sge-summary {
  background: var(--c-surface);
  border: 1px solid var(--c-border);
  border-left: 3px solid var(--c-cyan);
  border-radius: var(--radius-md);
  padding: var(--space-lg);
  margin-bottom: var(--space-xl);
  position: relative;
}
.sge-summary-label {
  font-family: var(--font-mono);
  font-size: 0.6rem;
  letter-spacing: 0.15em;
  text-transform: uppercase;
  color: var(--c-cyan);
  margin-bottom: 0.5rem;
  display: block;
}
.sge-summary p { margin: 0; font-size: 0.92rem; line-height: 1.7; }
.sge-summary strong { color: var(--c-text); }

/* Article body prose */
.article-body h2 {
  font-size: 1.5rem;
  letter-spacing: -0.02em;
  margin-top: var(--space-2xl);
  margin-bottom: var(--space-md);
  padding-bottom: var(--space-sm);
  border-bottom: 1px solid var(--c-border);
}
.article-body h3 { font-size: 1.1rem; margin-top: var(--space-xl); margin-bottom: var(--space-sm); }
.article-body p  { font-size: 0.97rem; line-height: 1.85; color: rgba(240,244,255,0.85); }
.article-body a  { color: var(--c-cyan); border-bottom: 1px solid var(--c-cyan-mid); }
.article-body a:hover { color: #fff; border-color: #fff; }
.article-body ul, .article-body ol { font-size: 0.95rem; line-height: 1.8; color: rgba(240,244,255,0.85); }

.article-body blockquote {
  border-left: 3px solid var(--c-violet);
  padding: var(--space-md) var(--space-lg);
  background: var(--c-violet-dim);
  border-radius: 0 var(--radius-md) var(--radius-md) 0;
  margin: var(--space-xl) 0;
  font-style: italic;
  color: var(--c-text-muted);
}

/* Sticky TOC sidebar */
.toc-sidebar { position: sticky; top: 80px; }
.toc-widget {
  background: var(--c-surface);
  border: 1px solid var(--c-border);
  border-radius: var(--radius-lg);
  padding: var(--space-lg);
}
.toc-title {
  font-family: var(--font-mono);
  font-size: 0.65rem;
  letter-spacing: 0.12em;
  text-transform: uppercase;
  color: var(--c-cyan);
  margin-bottom: var(--space-md);
  display: block;
}
.toc-list { list-style: none; padding: 0; }
.toc-list li { margin-bottom: 0.35rem; }
.toc-list a {
  font-size: 0.8rem;
  color: var(--c-text-muted);
  display: flex;
  align-items: flex-start;
  gap: 0.5rem;
  padding: 0.3rem 0;
  border-radius: var(--radius-sm);
  transition: color var(--t-fast);
  line-height: 1.4;
}
.toc-list a::before { content: '—'; color: var(--c-text-dim); flex-shrink: 0; font-family: var(--font-mono); font-size: 0.7rem; margin-top: 2px; }
.toc-list a:hover, .toc-list a.active { color: var(--c-cyan); }
.toc-list a.active::before { color: var(--c-cyan); }

/* FAQ Section */
.faq-section {
  margin-top: var(--space-2xl);
  padding-top: var(--space-xl);
  border-top: 1px solid var(--c-border);
}
.faq-section h2 { font-size: 1.3rem; margin-bottom: var(--space-lg); }
.faq-item {
  border: 1px solid var(--c-border);
  border-radius: var(--radius-md);
  margin-bottom: 0.75rem;
  overflow: hidden;
}
.faq-question {
  width: 100%; text-align: left;
  padding: var(--space-md) var(--space-lg);
  background: var(--c-surface);
  border: none; cursor: pointer;
  font-family: var(--font-body);
  font-size: 0.9rem;
  font-weight: 600;
  color: var(--c-text);
  display: flex; justify-content: space-between; align-items: center;
  transition: background var(--t-fast);
}
.faq-question:hover { background: var(--c-surface-3); }
.faq-question .faq-icon { color: var(--c-cyan); font-size: 1.1rem; transition: transform var(--t-fast); flex-shrink: 0; }
.faq-item.open .faq-question .faq-icon { transform: rotate(45deg); }
.faq-answer {
  display: none;
  padding: var(--space-md) var(--space-lg);
  background: var(--c-surface-2);
  font-size: 0.88rem;
  color: var(--c-text-muted);
  line-height: 1.7;
  border-top: 1px solid var(--c-border);
}
.faq-item.open .faq-answer { display: block; }

/* ── Author Page ── */
.author-hero {
  padding: 7rem 0 var(--space-2xl);
  background: var(--c-surface);
  border-bottom: 1px solid var(--c-border);
}
.author-hero-inner {
  display: flex;
  align-items: center;
  gap: var(--space-2xl);
}
.author-avatar-lg {
  width: 120px; height: 120px;
  border-radius: 50%;
  border: 3px solid var(--c-cyan);
  flex-shrink: 0;
  box-shadow: var(--glow-cyan);
}
.author-info h1 { font-size: 2rem; margin-bottom: 0.25rem; }
.author-role-lg { color: var(--c-cyan); font-family: var(--font-mono); font-size: 0.75rem; letter-spacing: 0.1em; margin-bottom: var(--space-md); display: block; }
.author-creds {
  display: flex; flex-wrap: wrap; gap: 0.5rem; margin-top: var(--space-md);
}

/* ── Static Pages (About, Privacy etc.) ── */
.static-hero {
  padding: 7rem 0 var(--space-2xl);
  background: var(--c-surface);
  border-bottom: 1px solid var(--c-border);
  text-align: center;
}
.static-hero h1 { font-size: clamp(2rem, 4vw, 3rem); margin-bottom: var(--space-md); }
.static-content { padding: var(--space-3xl) 0; }
.static-content h2 { font-size: 1.3rem; margin-top: var(--space-2xl); margin-bottom: var(--space-md); color: var(--c-cyan); }
.static-content p { font-size: 0.95rem; line-height: 1.85; color: rgba(240,244,255,0.8); }

/* ── 404 ── */
.not-found {
  min-height: 100vh;
  display: flex;
  flex-direction: column;
  align-items: center;
  justify-content: center;
  text-align: center;
  padding: var(--space-2xl);
}
.not-found-code {
  font-family: var(--font-mono);
  font-size: 7rem;
  font-weight: 700;
  line-height: 1;
  background: linear-gradient(135deg, var(--c-cyan), var(--c-violet));
  -webkit-background-clip: text;
  -webkit-text-fill-color: transparent;
  background-clip: text;
  margin-bottom: var(--space-md);
}

/* ── Responsive ── */
@media (max-width: 1024px) {
  .bento-grid { grid-template-columns: 1fr 1fr; }
  .bento-main { grid-column: 1 / -1; grid-row: 1; }
  .bento-stat { grid-column: 1; grid-row: 2; }
  .bento-stat-2 { grid-column: 2; grid-row: 2; }
  .bento-feature { grid-column: 1 / -1; grid-row: 3; }
  .articles-grid { grid-template-columns: repeat(2, 1fr); }
  .articles-grid.four-col { grid-template-columns: repeat(2, 1fr); }
  .article-card.featured { grid-template-columns: 1fr; }
  .article-card.featured .card-image { height: 220px; }
  .pillars-grid { grid-template-columns: repeat(2, 1fr); }
  .authors-grid { grid-template-columns: repeat(2, 1fr); }
  .footer-grid { grid-template-columns: 1fr 1fr; }
  .article-layout { grid-template-columns: 1fr; }
  .toc-sidebar { position: static; }
}

@media (max-width: 768px) {
  .nav-links, .btn-nav { display: none; }
  .hamburger { display: flex; }
  .bento-grid { grid-template-columns: 1fr; }
  .bento-feature-inner { flex-direction: column; }
  .articles-grid { grid-template-columns: 1fr; }
  .articles-grid.two-col { grid-template-columns: 1fr; }
  .pillars-grid { grid-template-columns: 1fr; }
  .authors-grid { grid-template-columns: repeat(2, 1fr); }
  .footer-grid { grid-template-columns: 1fr; }
  .footer-bottom { flex-direction: column; text-align: center; }
  .newsletter-form { flex-direction: column; }
  .author-hero-inner { flex-direction: column; text-align: center; }
  .article-meta-row { flex-direction: column; align-items: flex-start; gap: 0.75rem; }
}

/* Progress bar */
#reading-progress {
  position: fixed;
  top: 0; left: 0;
  height: 2px;
  background: linear-gradient(90deg, var(--c-cyan), var(--c-violet));
  z-index: 9999;
  transition: width 0.1s;
  width: 0%;
}

/* Scroll animations */
.fade-up {
  opacity: 0;
  transform: translateY(20px);
  transition: opacity 0.5s ease, transform 0.5s ease;
}
.fade-up.visible { opacity: 1; transform: translateY(0); }