/* ═══════════════════════════════════════════════
   THE ENGINEERING LEDGER — Modern Effects
   ═══════════════════════════════════════════════ */

/* ─── NOISE TEXTURE OVERLAY ─── */
body::after {
  content: '';
  position: fixed;
  inset: 0;
  pointer-events: none;
  z-index: 9999;
  opacity: 0.025;
  background-image: url("data:image/svg+xml,%3Csvg viewBox='0 0 256 256' 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");
  background-repeat: repeat;
  background-size: 200px 200px;
}

/* ─── NAV — Enhanced Glassmorphism ─── */
nav {
  position: fixed; top: 0; left: 0; right: 0; z-index: 100;
  display: flex; align-items: center; justify-content: space-between;
  padding: 0 48px; height: 72px;
  background: rgba(250,249,246,0.88);
  backdrop-filter: blur(28px) saturate(1.4);
  -webkit-backdrop-filter: blur(28px) saturate(1.4);
  border-bottom: 1px solid rgba(232,231,226,0.6);
}
nav::after {
  content: '';
  position: absolute;
  bottom: -1px; left: 0; right: 0;
  height: 1px;
  background: linear-gradient(90deg, transparent, var(--terra), transparent);
  opacity: 0.15;
}

.nav-logo {
  display: flex; align-items: center; gap: 14px;
  text-decoration: none; cursor: pointer;
  transition: transform 0.35s cubic-bezier(0.34,1.56,0.64,1);
}
.nav-logo-mark { width: 32px; height: 32px; flex-shrink: 0; color: var(--void); }
.nav-logo-text { display: flex; flex-direction: column; gap: 1px; }
.nav-logo-name {
  font-family: 'EB Garamond', serif;
  font-size: 17px; letter-spacing: 0.18em;
  color: var(--void); text-transform: uppercase;
}
.nav-logo-tag {
  font-family: 'Figtree', sans-serif;
  font-size: 9px; letter-spacing: 0.22em;
  color: var(--terra); font-weight: 600;
  text-transform: uppercase;
}

.nav-links { display: flex; align-items: center; gap: 36px; }
.nav-link {
  font-size: 12px; letter-spacing: 0.12em; font-weight: 500;
  text-transform: uppercase; color: var(--iron);
  cursor: pointer; text-decoration: none; background: none; border: none;
  position: relative; transition: color 0.2s;
}
.nav-link::after {
  content: '';
  position: absolute; bottom: -4px; left: 0;
  width: 100%; height: 1.5px;
  background: var(--terra);
  transform: scaleX(0);
  transform-origin: right;
  transition: transform 0.3s cubic-bezier(0.4,0,0.2,1);
}
.nav-link:hover { color: var(--void); }
.nav-link:hover::after { transform: scaleX(1); transform-origin: left; }
.nav-link.active-link { color: var(--terra); }
.nav-link.active-link::after { transform: scaleX(1); }

.nav-btn {
  display: flex; align-items: center; gap: 8px;
  padding: 8px 18px; border-radius: 3px;
  font-family: 'Figtree', sans-serif;
  font-size: 11px; letter-spacing: 0.12em; font-weight: 600;
  text-transform: uppercase; cursor: pointer;
  transition: all 0.2s; border: none; text-decoration: none;
}
.btn-outline { background: transparent; color: var(--void); border: 1.5px solid var(--mist); }
.btn-outline:hover { border-color: var(--void); }

/* ─── HERO — Full Viewport Centered ─── */
.hero {
  min-height: 100vh;
  display: flex;
  align-items: center;
  justify-content: center;
  position: relative;
  overflow: hidden;
  padding: 120px 48px 80px;
}

/* Animated orb background */
.hero-bg {
  position: absolute;
  inset: 0;
  z-index: 0;
  pointer-events: none;
  overflow: hidden;
}
.hero-orb {
  position: absolute;
  border-radius: 50%;
  filter: blur(100px);
  will-change: transform;
}
.hero-orb-1 {
  width: 600px; height: 600px;
  top: -15%; right: -5%;
  background: radial-gradient(circle, var(--terra), transparent 70%);
  opacity: 0.08;
  animation: orbFloat1 20s ease-in-out infinite;
}
.hero-orb-2 {
  width: 450px; height: 450px;
  bottom: -10%; left: 5%;
  background: radial-gradient(circle, #06B6D4, transparent 70%);
  opacity: 0.06;
  animation: orbFloat2 25s ease-in-out infinite;
}
.hero-orb-3 {
  width: 350px; height: 350px;
  top: 30%; left: 40%;
  background: radial-gradient(circle, var(--terra-soft), transparent 70%);
  opacity: 0.04;
  animation: orbFloat3 18s ease-in-out infinite;
}

/* Subtle grid lines behind hero */
.hero-grid-lines {
  position: absolute;
  inset: 0;
  background-image:
    linear-gradient(var(--cloud) 1px, transparent 1px),
    linear-gradient(90deg, var(--cloud) 1px, transparent 1px);
  background-size: 80px 80px;
  opacity: 0.4;
  mask-image: radial-gradient(ellipse 70% 60% at 50% 50%, black 20%, transparent 70%);
  -webkit-mask-image: radial-gradient(ellipse 70% 60% at 50% 50%, black 20%, transparent 70%);
}

@keyframes orbFloat1 {
  0%, 100% { transform: translate(0, 0) scale(1); }
  33% { transform: translate(-40px, 30px) scale(1.08); }
  66% { transform: translate(25px, -20px) scale(0.95); }
}
@keyframes orbFloat2 {
  0%, 100% { transform: translate(0, 0) scale(1); }
  33% { transform: translate(30px, -25px) scale(1.05); }
  66% { transform: translate(-20px, 30px) scale(0.96); }
}
@keyframes orbFloat3 {
  0%, 100% { transform: translate(0, 0) scale(1); }
  50% { transform: translate(-30px, -20px) scale(1.1); }
}

.hero-content {
  position: relative;
  z-index: 1;
  text-align: center;
  max-width: 800px;
  margin: 0 auto;
}

/* Hero badge */
.hero-badge {
  display: inline-flex;
  align-items: center;
  gap: 10px;
  font-size: 11px;
  letter-spacing: 0.18em;
  font-weight: 600;
  text-transform: uppercase;
  color: var(--terra);
  padding: 8px 20px;
  border: 1px solid var(--terra-glow);
  border-radius: 100px;
  background: var(--terra-glow);
  margin-bottom: 40px;
}
.hero-badge-dot {
  width: 6px;
  height: 6px;
  border-radius: 50%;
  background: var(--terra);
  animation: badgePulse 2s ease-in-out infinite;
}
@keyframes badgePulse {
  0%, 100% { opacity: 1; transform: scale(1); }
  50% { opacity: 0.5; transform: scale(0.8); }
}

/* Hero heading with word-by-word reveal */
.hero h1, .hero-heading {
  font-family: 'EB Garamond', serif;
  font-size: clamp(52px, 6vw, 88px); font-weight: 400;
  line-height: 1.08; letter-spacing: -0.02em;
  color: var(--void);
  margin-bottom: 28px;
}
.hero h1 em, .hero-heading em {
  font-style: italic;
  background: linear-gradient(135deg, var(--terra) 0%, var(--terra-soft) 40%, #06B6D4 100%);
  background-size: 200% 200%;
  -webkit-background-clip: text;
  background-clip: text;
  -webkit-text-fill-color: transparent;
  color: var(--terra);
  animation: gradientShift 6s ease-in-out infinite;
}

.hero-heading em .word-reveal {
  background: inherit;
  background-size: inherit;
  -webkit-background-clip: text;
  background-clip: text;
  -webkit-text-fill-color: transparent;
  color: var(--terra);
}

@keyframes gradientShift {
  0%, 100% { background-position: 0% 50%; }
  50% { background-position: 100% 50%; }
}

/* Word reveal animation */
.word-reveal {
  display: inline-block;
  opacity: 0;
  transform: translateY(24px);
  filter: blur(6px);
  transition: opacity 0.6s ease, transform 0.6s ease, filter 0.6s ease;
  transition-delay: calc(var(--word-i) * 0.1s + 0.2s);
}
.hero-heading.revealed .word-reveal {
  opacity: 1;
  transform: translateY(0);
  filter: blur(0);
}

.hero-sub {
  font-size: 18px; color: var(--iron); line-height: 1.8;
  max-width: 600px; margin: 0 auto;
}

/* Scroll hint */
.hero-cta {
  margin-top: 56px;
}
.hero-scroll-hint {
  display: inline-flex;
  flex-direction: column;
  align-items: center;
  gap: 12px;
  color: var(--stone);
  font-size: 10px;
  letter-spacing: 0.2em;
  text-transform: uppercase;
  font-weight: 600;
}
.hero-scroll-line {
  width: 1px;
  height: 48px;
  background: linear-gradient(to bottom, var(--terra), transparent);
  animation: scrollPulse 2s ease-in-out infinite;
}
@keyframes scrollPulse {
  0%, 100% { opacity: 1; transform: scaleY(1); }
  50% { opacity: 0.4; transform: scaleY(0.6); }
}

/* ─── DIVIDER — Animated clip reveal ─── */
.divider {
  height: 1px;
  background: linear-gradient(90deg, transparent, var(--cloud) 15%, var(--cloud) 85%, transparent);
  max-width: 1100px; margin: 0 auto;
}

/* ─── MISSION SECTION ─── */
.mission {
  max-width: 1100px;
  margin: 0 auto;
  padding: 48px 48px 44px;
  position: relative;
}
.mission::before {
  content: '';
  position: absolute;
  left: 48px; top: 0;
  width: 40px; height: 2px;
  background: var(--terra);
}
.mission-intro {
  font-family: 'EB Garamond', serif;
  font-size: 22px; font-style: italic;
  color: var(--void); line-height: 1.55;
  margin-bottom: 36px; max-width: 680px;
}
.mission-pillars {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 1px;
  background: var(--cloud);
  border: 1px solid var(--cloud);
}
.mission-pillar {
  background: var(--parchment);
  padding: 28px 30px 32px;
  position: relative;
  overflow: hidden;
  transition: background 0.3s ease, transform 0.3s ease, box-shadow 0.3s ease;
}
.mission-pillar::after {
  content: '';
  position: absolute;
  bottom: 0; left: 0; right: 0;
  height: 2px;
  background: var(--terra);
  transform: scaleX(0);
  transform-origin: left;
  transition: transform 0.4s cubic-bezier(0.4,0,0.2,1);
}
.mission-pillar:hover {
  background: white;
  transform: translateY(-2px);
  box-shadow: 0 8px 32px rgba(10,9,8,0.06);
}
.mission-pillar:hover::after { transform: scaleX(1); }

.pillar-num {
  display: block;
  font-family: 'EB Garamond', serif;
  font-size: 32px;
  color: var(--terra);
  opacity: 0.12;
  line-height: 1;
  margin-bottom: 12px;
  font-style: italic;
}
.pillar-label {
  display: block;
  font-size: 10px; letter-spacing: 0.18em;
  text-transform: uppercase; color: var(--terra);
  font-weight: 600; margin-bottom: 12px;
}
.pillar-text {
  font-size: 14px; color: var(--iron); line-height: 1.7;
}

/* ─── ARTICLES GRID ─── */
.articles-grid {
  max-width: 1100px; margin: 0 auto;
  padding: 0 48px 80px;
  display: grid; grid-template-columns: repeat(auto-fill, minmax(320px, 1fr));
  gap: 2px;
}

.article-card {
  background: var(--parchment);
  padding: 32px;
  border: 1px solid var(--cloud);
  cursor: pointer;
  position: relative;
  overflow: hidden;
  transition: background 0.3s ease, transform 0.3s ease, box-shadow 0.3s ease;
}
.article-card::before {
  content: ''; position: absolute; left: 0; top: 0; bottom: 0;
  width: 3px; background: var(--terra);
  transform: scaleY(0); transform-origin: bottom;
  transition: transform 0.35s cubic-bezier(0.4,0,0.2,1);
}
.article-card:hover {
  background: white;
  transform: translateY(-3px);
  box-shadow: 0 12px 48px rgba(10,9,8,0.08), 0 2px 8px rgba(10,9,8,0.04);
}
.article-card:hover::before { transform: scaleY(1); }

/* data-tilt cards get perspective context */
[data-tilt] {
  transition: transform 0.4s cubic-bezier(0.34,1.56,0.64,1), background 0.3s ease, box-shadow 0.3s ease;
  will-change: transform;
}

.card-meta {
  display: flex; align-items: center; gap: 12px;
  margin-bottom: 16px;
}
.card-tag {
  font-size: 9px; letter-spacing: 0.18em; font-weight: 600;
  text-transform: uppercase; color: var(--terra);
  padding: 3px 8px; border: 1px solid var(--terra);
  border-radius: 2px;
}
.card-date { font-size: 11px; color: var(--stone); letter-spacing: 0.06em; }
.card-title {
  font-family: 'EB Garamond', serif;
  font-size: 22px; line-height: 1.3; color: var(--void);
  margin-bottom: 12px;
}
.card-excerpt {
  font-size: 13px; color: var(--iron); line-height: 1.6;
  display: -webkit-box; -webkit-line-clamp: 3;
  -webkit-box-orient: vertical; overflow: hidden;
}
.card-read-badge {
  margin-left: auto;
  font-size: 9px; letter-spacing: 0.14em; font-weight: 600;
  text-transform: uppercase; color: var(--stone);
  padding: 3px 8px; border: 1px solid var(--mist); border-radius: 2px;
  white-space: nowrap;
}
.card-footer {
  margin-top: 20px; padding-top: 16px;
  border-top: 1px solid var(--cloud);
  display: flex; align-items: center; justify-content: space-between;
}
.card-read { font-size: 11px; letter-spacing: 0.1em; color: var(--stone); font-weight: 500; text-transform: uppercase; }
.card-arrow {
  color: var(--terra); font-size: 16px;
  transition: transform 0.35s cubic-bezier(0.34,1.56,0.64,1);
}
.article-card:hover .card-arrow { transform: translateX(6px); }

.empty-state {
  grid-column: 1/-1; text-align: center; padding: 80px 0;
}
.empty-icon { font-size: 48px; margin-bottom: 16px; opacity: 0.3; }
.empty-title {
  font-family: 'EB Garamond', serif; font-size: 28px; color: var(--stone); margin-bottom: 8px;
}
.empty-sub { font-size: 14px; color: var(--stone); }

.filter-pill {
  padding: 5px 14px; border-radius: 20px;
  font-size: 10px; letter-spacing: 0.1em; font-weight: 600;
  text-transform: uppercase; cursor: pointer;
  border: 1.5px solid var(--cloud); color: var(--stone);
  background: transparent; font-family: 'Figtree', sans-serif;
  transition: all 0.2s;
}
.filter-pill:hover { border-color: var(--terra); color: var(--terra); }
.filter-pill.active { background: var(--terra); color: white; border-color: var(--terra); }
.no-results {
  grid-column: 1/-1; text-align: center; padding: 60px 0;
  font-size: 14px; color: var(--stone);
}

/* ─── DARK TOGGLE ─── */
.dark-toggle {
  position: relative;
  background: var(--cloud); border: 1.5px solid var(--mist);
  border-radius: 30px; width: 56px; height: 30px;
  cursor: pointer; flex-shrink: 0;
  display: flex; align-items: center; padding: 3px;
  transition: transform 0.35s cubic-bezier(0.34,1.56,0.64,1), background 0.25s ease, border-color 0.25s ease;
}
.dark-toggle-thumb {
  width: 22px; height: 22px; background: white; border-radius: 50%;
  box-shadow: 0 1px 4px rgba(0,0,0,0.18);
  display: flex; align-items: center; justify-content: center;
  transition: transform 0.3s cubic-bezier(0.34,1.56,0.64,1);
  flex-shrink: 0; color: var(--stone);
}
.dark-toggle-thumb svg { width: 11px; height: 11px; }
[data-theme="dark"] .dark-toggle { background: #3a3830; border-color: #3a3830; }
[data-theme="dark"] .dark-toggle-thumb { transform: translateX(26px); background: #F8FAFC; color: #6366F1; }

/* ─── ARTICLE READ VIEW ─── */
#view-article {
  padding-top: 72px;
}
.article-header {
  max-width: 760px; margin: 0 auto;
  padding: 72px 48px 48px;
}
.article-header .card-meta { margin-bottom: 24px; }
.article-header h1 {
  font-family: 'EB Garamond', serif;
  font-size: clamp(36px, 4vw, 56px); font-weight: 400;
  line-height: 1.15; color: var(--void);
  margin-bottom: 24px;
}
.article-header .lead {
  font-size: 18px; color: var(--iron); line-height: 1.7;
  font-family: 'EB Garamond', serif; font-style: italic;
  border-left: 3px solid var(--terra); padding-left: 20px;
}
.article-divider { max-width: 760px; margin: 0 auto 0; height: 1px; background: var(--cloud); }
.article-body {
  max-width: 760px; margin: 0 auto;
  padding: 48px 48px 100px;
  font-size: 17px; line-height: 1.8; color: var(--charcoal);
}
.article-body h2 {
  font-family: 'EB Garamond', serif;
  font-size: 30px; font-weight: 400; color: var(--void);
  margin: 48px 0 16px;
}
.article-body h3 {
  font-size: 14px; letter-spacing: 0.14em; font-weight: 600;
  text-transform: uppercase; color: var(--terra);
  margin: 36px 0 12px;
}
.article-body p { margin-bottom: 20px; }
.article-body ul, .article-body ol { margin: 0 0 20px 20px; }
.article-body li { margin-bottom: 6px; }
.article-body blockquote {
  border-left: 3px solid var(--terra);
  padding: 4px 0 4px 24px; margin: 32px 0;
  font-family: 'EB Garamond', serif; font-size: 22px;
  font-style: italic; color: var(--graphite);
}
.article-body code {
  font-family: 'SF Mono', 'Consolas', monospace;
  font-size: 13px; background: var(--silk); padding: 2px 6px;
  border-radius: 3px; color: var(--terra-dark);
}
.article-body pre {
  background: var(--void); color: var(--cloud);
  padding: 24px; border-radius: 4px; margin: 24px 0;
  overflow-x: auto; font-size: 13px; line-height: 1.6;
}
.article-body pre code { background: none; color: inherit; padding: 0; }

.article-back {
  display: inline-flex; align-items: center; gap: 8px;
  cursor: pointer; padding: 0 48px 0;
  max-width: 760px; margin: 0 auto; display: flex; width: fit-content;
  font-size: 11px; letter-spacing: 0.12em; font-weight: 600;
  text-transform: uppercase; color: var(--stone);
  margin-top: 24px; transition: color 0.2s;
}
.article-back:hover { color: var(--terra); }

/* ─── TOAST ─── */
.toast {
  position: fixed; bottom: 32px; right: 32px;
  padding: 14px 20px; border-radius: 4px;
  background: var(--void); color: var(--parchment);
  font-size: 13px; font-weight: 500;
  display: flex; align-items: center; gap: 10px;
  transform: translateY(80px); opacity: 0;
  transition: all 0.35s cubic-bezier(0.34, 1.56, 0.64, 1);
  z-index: 200; max-width: 320px;
}
.toast.show { transform: translateY(0); opacity: 1; }
.toast .toast-icon { color: var(--terra); font-size: 16px; }

/* ─── PROGRESS BAR ─── */
.progress-bar {
  position: fixed; top: 0; left: 0; z-index: 200;
  height: 2px; background: var(--terra); width: 0%;
  transition: width 0.1s linear; pointer-events: none;
}

/* ─── FEATURED CARD ─── */
.article-card.featured {
  grid-column: 1 / -1;
  display: grid; grid-template-columns: 3fr 2fr; gap: 0;
}
.article-card.featured .card-body { padding: 40px; }
.article-card.featured .card-accent {
  background: var(--terra-glow);
  display: flex; align-items: center; justify-content: center;
  border-left: 1px solid var(--cloud);
  position: relative;
  overflow: hidden;
}
.article-card.featured .card-accent::before {
  content: '';
  position: absolute;
  inset: 0;
  background: radial-gradient(circle at 30% 70%, rgba(99,102,241,0.1), transparent 60%);
  animation: accentPulse 4s ease-in-out infinite;
}
@keyframes accentPulse {
  0%, 100% { opacity: 0.5; }
  50% { opacity: 1; }
}
.article-card.featured .card-accent-label {
  font-family: 'EB Garamond', serif; font-size: 72px;
  color: var(--terra); opacity: 0.15; line-height: 1;
  user-select: none;
}
.article-card.featured .card-title { font-size: 26px; margin-bottom: 16px; }
.article-card.featured .card-excerpt { -webkit-line-clamp: 4; font-size: 14px; }

/* ─── TECHNOLOGY SECTION — 3x2 Grid ─── */
.tech-section {
  max-width: 1100px;
  margin: 0 auto;
  padding: 60px 48px;
  position: relative;
}
.tech-section::before {
  content: '';
  position: absolute;
  left: 48px; top: 0;
  width: 40px; height: 2px;
  background: var(--terra);
}
.section-eyebrow {
  font-size: 10px; letter-spacing: 0.28em; font-weight: 600;
  text-transform: uppercase; color: var(--terra);
  margin-bottom: 16px; display: flex; align-items: center; gap: 12px;
}
.section-eyebrow::before {
  content: ''; display: block; width: 32px; height: 1px; background: var(--terra);
}
.tech-title {
  font-family: 'EB Garamond', serif;
  font-size: clamp(28px, 3vw, 40px);
  font-weight: 400; color: var(--void);
  line-height: 1.2; margin-bottom: 12px;
}
.tech-title em {
  font-style: italic;
  background: linear-gradient(135deg, var(--terra) 0%, var(--terra-soft) 50%, var(--terra) 100%);
  background-size: 200% 200%;
  -webkit-background-clip: text;
  background-clip: text;
  -webkit-text-fill-color: transparent;
  color: var(--terra);
  animation: gradientShift 6s ease-in-out infinite;
}
.tech-sub {
  font-size: 15px; color: var(--iron); line-height: 1.7;
  max-width: 560px; margin-bottom: 40px;
}

/* Tech Grid — 3 columns */
.tech-grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 2px;
  background: var(--cloud);
  border: 1px solid var(--cloud);
}

.tech-card {
  background: var(--parchment);
  padding: 32px 28px;
  position: relative;
  overflow: hidden;
  cursor: default;
  transition: background 0.3s ease, box-shadow 0.3s ease, transform 0.4s cubic-bezier(0.34,1.56,0.64,1);
  will-change: transform;
}
.tech-card::before {
  content: '';
  position: absolute;
  top: 0; left: 0; right: 0;
  height: 2px;
  background: var(--terra);
  transform: scaleX(0);
  transform-origin: left;
  transition: transform 0.4s cubic-bezier(0.4,0,0.2,1);
}
.tech-card::after {
  content: '';
  position: absolute;
  bottom: -70px; right: -70px;
  width: 140px; height: 140px;
  border-radius: 50%;
  background: rgba(99,102,241,0.08);
  transition: transform 0.5s cubic-bezier(0.34,1.56,0.64,1), opacity 0.5s ease;
  opacity: 0;
}
.tech-card:hover {
  background: white;
  box-shadow: 0 8px 32px rgba(10,9,8,0.06);
}
.tech-card:hover::before { transform: scaleX(1); }
.tech-card:hover::after { opacity: 1; transform: scale(1.6); }

.tech-card-num {
  position: absolute;
  top: 16px; right: 20px;
  font-family: 'EB Garamond', serif;
  font-size: 28px;
  font-style: italic;
  color: var(--terra);
  opacity: 0.1;
  line-height: 1;
  user-select: none;
  transition: opacity 0.3s ease;
}
.tech-card:hover .tech-card-num { opacity: 0.2; }

.tech-card-icon {
  width: 40px; height: 40px;
  margin-bottom: 20px;
  color: var(--terra);
  display: flex; align-items: center; justify-content: center;
  transition: transform 0.4s cubic-bezier(0.34,1.56,0.64,1);
}
.tech-card-icon svg { width: 34px; height: 34px; }
.tech-card:hover .tech-card-icon {
  transform: scale(1.12) translateY(-2px);
}
.tech-card-name {
  font-size: 13px; font-weight: 600;
  letter-spacing: 0.04em;
  color: var(--void); margin-bottom: 10px;
}
.tech-card-desc {
  font-size: 13px; color: var(--iron); line-height: 1.7;
}

/* ─── FOOTER — Modernized ─── */
footer {
  background: var(--void); color: var(--stone);
  padding: 0;
  position: relative;
}
.footer-accent {
  height: 2px;
  background: linear-gradient(90deg, var(--terra), #06B6D4, var(--terra));
  background-size: 200% 100%;
  animation: footerAccent 4s ease-in-out infinite;
}
@keyframes footerAccent {
  0%, 100% { background-position: 0% 50%; }
  50% { background-position: 100% 50%; }
}
.footer-inner {
  max-width: 1100px; margin: 0 auto;
  padding: 56px 48px 40px;
  display: grid; grid-template-columns: 1fr auto;
  gap: 64px; align-items: start;
  border-bottom: 1px solid var(--graphite);
}
.footer-brand-top { display: flex; align-items: center; gap: 12px; }
.footer-logo-mark {
  width: 36px; height: 36px; display: block; color: var(--graphite);
  transition: transform 0.6s cubic-bezier(0.34,1.56,0.64,1);
}
.footer-logo-mark:hover { transform: rotate(180deg); }
.footer-brand .f-name { font-family: 'EB Garamond', serif; font-size: 26px; color: var(--mist); letter-spacing: 0.05em; }
.footer-brand .f-tagline { font-size: 13px; color: var(--iron); margin-top: 10px; line-height: 1.6; max-width: 320px; }
.footer-links { display: flex; flex-direction: column; gap: 10px; text-align: right; padding-top: 4px; }
.footer-links button {
  font-size: 11px; letter-spacing: 0.12em; text-transform: uppercase;
  color: var(--stone); background: none; border: none; cursor: pointer;
  font-family: 'Figtree', sans-serif; font-weight: 500;
  transition: color 0.2s; text-align: right;
  position: relative;
}
.footer-links button:hover { color: var(--terra); }
.footer-links a {
  font-size: 11px; letter-spacing: 0.12em; text-transform: uppercase;
  color: var(--stone); text-decoration: none;
  font-family: 'Figtree', sans-serif; font-weight: 500; transition: color 0.2s;
  text-align: right;
}
.footer-links a:hover { color: var(--terra); }
.footer-bottom {
  max-width: 1100px; margin: 0 auto;
  padding: 24px 48px;
  display: flex; align-items: center; justify-content: space-between;
}
.f-copy { font-size: 11px; color: var(--graphite); }
.f-copy-right { font-size: 11px; color: var(--graphite); letter-spacing: 0.06em; }

/* ═══════════════════════════════════════════════
   SCROLL-REVEAL SYSTEM — Multiple animation types
   ═══════════════════════════════════════════════ */

/* Default: fade up */
.scroll-reveal {
  opacity: 0;
  transform: translateY(40px);
  transition:
    opacity 0.7s cubic-bezier(0.4,0,0.2,1),
    transform 0.7s cubic-bezier(0.4,0,0.2,1),
    filter 0.7s cubic-bezier(0.4,0,0.2,1);
  transition-delay: var(--reveal-delay, 0s);
}

/* Scale variant */
.scroll-reveal[data-reveal="scale"] {
  transform: scale(0.94) translateY(16px);
}

/* Blur variant */
.scroll-reveal[data-reveal="blur"] {
  transform: translateY(20px);
  filter: blur(6px);
}

/* Clip variant (for dividers) */
.scroll-reveal[data-reveal="clip"] {
  transform: none;
  clip-path: inset(0 50% 0 50%);
  transition:
    opacity 0.6s cubic-bezier(0.4,0,0.2,1),
    clip-path 0.6s cubic-bezier(0.4,0,0.2,1);
}

/* Visible state — all variants */
.scroll-reveal.visible {
  opacity: 1;
  transform: none;
  filter: blur(0);
  clip-path: inset(0 0 0 0);
}

/* ─── VIEW TRANSITIONS ─── */
.view-leaving {
  animation: viewOut 0.25s ease forwards;
}
.view-entering {
  animation: viewIn 0.35s cubic-bezier(0.4,0,0.2,1) forwards;
}

@keyframes viewOut {
  from { opacity: 1; transform: translateY(0); }
  to { opacity: 0; transform: translateY(-16px); }
}
@keyframes viewIn {
  from { opacity: 0; transform: translateY(16px); }
  to { opacity: 1; transform: translateY(0); }
}

/* ─── REDUCED MOTION ─── */
@media (prefers-reduced-motion: reduce) {
  .scroll-reveal,
  .scroll-reveal[data-reveal="scale"],
  .scroll-reveal[data-reveal="blur"],
  .scroll-reveal[data-reveal="clip"] {
    opacity: 1; transform: none; filter: none;
    clip-path: none; transition: none;
  }
  .word-reveal { opacity: 1; transform: none; filter: none; transition: none; }
  .hero-orb, .hero-scroll-line, .hero-badge-dot { animation: none; }
  .view-leaving, .view-entering { animation: none; }
  .tech-title em, .hero-heading em { animation: none; }
  .footer-accent { animation: none; }
}

/* ─── CROSS-DEVICE: Touch targets & interactions ─── */
button, .nav-link, .faq-q, .article-card, .mission-pillar, .tech-card {
  touch-action: manipulation;
}
.nav-btn, .filter-pill, .faq-q { min-height: 44px; }

/* ═══════════════════════════════════════════════
   RESPONSIVE BREAKPOINTS
   ═══════════════════════════════════════════════ */

/* ─── TABLET (1024px) ─── */
@media (max-width: 1024px) {
  nav { padding: 0 32px; }
  .hero { padding: 120px 32px 60px; }
  .mission { padding: 40px 32px 36px; }
  .mission::before { left: 32px; }
  .articles-grid { padding: 0 32px 72px; }
  .tech-section { padding: 48px 32px; }
  .tech-section::before { left: 32px; }
  .tech-grid { grid-template-columns: repeat(2, 1fr); }
  .footer-inner { padding: 48px 32px 36px; }
  .footer-bottom { padding: 20px 32px; }
  .article-header { padding-left: 32px; padding-right: 32px; }
  .article-body { padding-left: 32px; padding-right: 32px; }
}

/* ─── MOBILE (768px) ─── */
@media (max-width: 768px) {
  nav {
    padding: 0 24px;
    padding-left: max(24px, env(safe-area-inset-left));
    padding-right: max(24px, env(safe-area-inset-right));
  }
  nav::after { display: none; }
  .hero {
    padding: 100px 24px 48px;
    min-height: 85vh;
  }
  .hero-orb-1 { width: 350px; height: 350px; }
  .hero-orb-2 { width: 280px; height: 280px; }
  .hero-orb-3 { width: 200px; height: 200px; }
  .hero-grid-lines { opacity: 0.2; }
  .articles-grid { padding: 0 24px 60px; }
  .mission { padding: 32px 24px 28px; }
  .mission::before { left: 24px; }
  .mission-intro { font-size: 18px; margin-bottom: 24px; }
  .mission-pillars { grid-template-columns: 1fr; }
  .article-header, .article-body { padding-left: 24px; padding-right: 24px; }
  .article-card.featured { grid-template-columns: 1fr; }
  .article-card.featured .card-accent { display: none; }
  .article-card.featured .card-body { padding: 32px; }
  .tech-section { padding: 40px 24px 32px; }
  .tech-section::before { left: 24px; }
  .tech-grid { grid-template-columns: 1fr; }
  .footer-inner { grid-template-columns: 1fr; gap: 32px; padding: 40px 24px 32px; }
  .footer-links { text-align: left; }
  .footer-bottom {
    padding: 20px 24px;
    padding-bottom: max(20px, env(safe-area-inset-bottom));
    flex-direction: column; gap: 6px; text-align: center;
  }
  .toast {
    right: 16px; left: 16px; bottom: max(24px, env(safe-area-inset-bottom));
    max-width: none;
  }
  /* Disable noise overlay on mobile for performance */
  body::after { display: none; }
}

/* ─── SENSOR / FAQ CONTENT STRIP (preserved) ─── */
.sensor-stage,
.faq-panel {
  border: 1px solid var(--cloud);
  background: linear-gradient(160deg, color-mix(in srgb, var(--parchment) 92%, white 8%), color-mix(in srgb, var(--parchment) 95%, var(--silk) 5%));
  border-radius: 8px;
  overflow: hidden;
  position: relative;
}
.panel-head {
  padding: 22px 24px;
  border-bottom: 1px solid var(--cloud);
}
.panel-kicker {
  font-size: 10px;
  letter-spacing: 0.16em;
  text-transform: uppercase;
  color: var(--terra);
  font-weight: 600;
  margin-bottom: 8px;
}
.panel-title {
  font-family: 'EB Garamond', serif;
  font-size: 30px;
  color: var(--void);
  line-height: 1.15;
}
.sensor-stage-wrap {
  min-height: 420px;
  padding: 32px 24px 30px;
  position: relative;
  display: flex;
  align-items: center;
  justify-content: center;
  background:
    radial-gradient(circle at 76% 14%, rgba(71, 139, 255, 0.12), transparent 44%),
    radial-gradient(circle at 16% 88%, rgba(198, 93, 58, 0.11), transparent 42%);
}
.sensor-rings {
  width: min(420px, 100%);
  aspect-ratio: 1;
  border-radius: 50%;
  position: relative;
  display: grid;
  place-items: center;
  background: radial-gradient(circle, rgba(111, 188, 255, 0.18) 0 26%, rgba(111, 188, 255, 0.1) 27% 39%, transparent 40% 100%);
  animation: breathe 5s ease-in-out infinite;
}
.sensor-rings::before,
.sensor-rings::after {
  content: '';
  position: absolute;
  inset: 0;
  border-radius: 50%;
  border: 1px dashed rgba(68, 136, 245, 0.35);
}
.sensor-rings::after {
  inset: 8%;
  border-style: solid;
  border-color: rgba(68, 136, 245, 0.22);
}
.vehicle-core {
  width: 150px;
  height: 90px;
  border-radius: 60px 60px 34px 34px;
  background: linear-gradient(160deg, #fefefe 5%, #d7dbe0 88%);
  border: 1px solid rgba(160, 169, 184, 0.7);
  position: relative;
  box-shadow: 0 14px 28px rgba(16, 23, 40, 0.16);
}
.vehicle-core::before {
  content: '';
  position: absolute;
  left: 12px; right: 12px; top: 14px;
  height: 24px;
  border-radius: 20px;
  background: linear-gradient(90deg, #7d8796, #555f70, #7f8794);
  opacity: 0.76;
}
.vehicle-core::after {
  content: '';
  position: absolute;
  width: 54px; height: 20px;
  bottom: -10px; left: 50%;
  transform: translateX(-50%);
  border-radius: 20px;
  background: rgba(53, 115, 211, 0.28);
  filter: blur(6px);
}
.scan-beam {
  position: absolute;
  width: 52%; height: 52%;
  border-radius: 0 100% 0 0;
  transform-origin: bottom left;
  background: conic-gradient(from 100deg, rgba(88, 167, 255, 0) 12deg, rgba(88, 167, 255, 0.34) 62deg, rgba(88, 167, 255, 0) 120deg);
  mix-blend-mode: screen;
  animation: sweep 4.3s linear infinite;
}
.sensor-tags {
  position: absolute;
  inset: auto 20px 20px;
  display: flex;
  gap: 8px;
  flex-wrap: wrap;
}
.sensor-tags span {
  font-size: 10px;
  letter-spacing: 0.1em;
  text-transform: uppercase;
  padding: 6px 10px;
  border-radius: 999px;
  background: color-mix(in srgb, var(--silk) 75%, white 25%);
  border: 1px solid var(--cloud);
  color: var(--iron);
  font-weight: 600;
}
.faq-body { padding: 10px 18px 20px; }
.faq-item {
  border-bottom: 1px solid var(--cloud);
}
.faq-item:last-child { border-bottom: none; }
.faq-q {
  width: 100%;
  padding: 16px 8px;
  border: none;
  background: none;
  text-align: left;
  color: var(--void);
  font-size: 14px;
  font-weight: 600;
  cursor: pointer;
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 12px;
}
.faq-q::after {
  content: '+';
  color: var(--terra);
  font-size: 20px;
  line-height: 1;
  transition: transform 0.2s ease;
}
.faq-item.open .faq-q::after {
  transform: rotate(45deg);
}
.faq-a {
  max-height: 0;
  overflow: hidden;
  transition: max-height 0.3s ease;
}
.faq-a p {
  padding: 0 8px 16px;
  font-size: 13px;
  color: var(--iron);
  line-height: 1.7;
}

/* ─── ANIMATIONS ─── */
@keyframes fadeIn { from { opacity: 0; transform: translateY(12px); } to { opacity: 1; transform: translateY(0); } }
@keyframes sweep { to { transform: rotate(360deg); } }
@keyframes breathe {
  0%, 100% { transform: scale(1); }
  50% { transform: scale(1.03); }
}
.animate-in { animation: fadeIn 0.5s ease both; }
.animate-in:nth-child(2) { animation-delay: 0.05s; }
.animate-in:nth-child(3) { animation-delay: 0.1s; }
.animate-in:nth-child(4) { animation-delay: 0.15s; }
.animate-in:nth-child(5) { animation-delay: 0.2s; }