/* ── BADGE / KICKER ──────────────────────────────── */
.kicker {
  display: inline-flex; align-items: center; gap: 0.5rem;
  font-family: var(--font-mono);
  font-size: 0.65rem; font-weight: 500;
  letter-spacing: 0.25em; text-transform: uppercase;
  color: var(--blue-glow);
  border: 1px solid var(--blue-border);
  padding: 0.35rem 0.9rem;
  border-radius: 2px;
  margin-bottom: 1.5rem;
}
.kicker::before { content: '●'; font-size: 0.4rem; color: var(--blue-bright); }

/* ── TYPOGRAPHY ───────────────────────────────────── */
.display {
  font-family: var(--font-display);
  font-size: clamp(2.8rem, 7vw, 6rem);
  font-weight: 400;
  line-height: 1.05;
  letter-spacing: -0.02em;
  color: var(--text-primary);
}
.display em {
  font-style: italic;
  color: var(--blue-glow);
  font-weight: 300;
}
.display-lg {
  font-family: var(--font-display);
  font-size: clamp(2.2rem, 5vw, 4.5rem);
  font-weight: 400; line-height: 1.1;
  letter-spacing: -0.02em;
}
.display-sm {
  font-family: var(--font-display);
  font-size: clamp(1.8rem, 3vw, 2.8rem);
  font-weight: 400; line-height: 1.15;
  letter-spacing: -0.01em;
}
.heading {
  font-size: clamp(1rem, 1.5vw, 1.2rem);
  font-weight: 600; letter-spacing: 0.05em;
  text-transform: uppercase; color: var(--text-primary);
}
.label {
  font-family: var(--font-mono);
  font-size: 0.65rem; font-weight: 500;
  letter-spacing: 0.2em; text-transform: uppercase;
  color: var(--text-muted);
}
.body-text { color: var(--text-secondary); line-height: 1.75; font-size: 0.95rem; }

/* ── STAT DISPLAY ─────────────────────────────────── */
.stat-num {
  font-family: var(--font-display);
  font-size: clamp(2.5rem, 5vw, 4rem);
  font-weight: 300;
  line-height: 1;
  color: var(--text-primary);
}
.stat-label {
  font-family: var(--font-mono);
  font-size: 0.6rem; letter-spacing: 0.2em;
  text-transform: uppercase; color: var(--text-muted);
  margin-top: 0.5rem;
}

/* ── CARDS ────────────────────────────────────────── */
.card {
  background: var(--bg-card);
  border: 1px solid var(--line);
  border-radius: var(--radius-lg);
  backdrop-filter: blur(16px);
  -webkit-backdrop-filter: blur(16px);
  transition: var(--transition);
  overflow: hidden;
}
.card:hover {
  background: var(--bg-card-hover);
  border-color: var(--blue-border);
  box-shadow: var(--shadow-blue), var(--shadow-card);
  transform: translateY(-4px);
}
.card-body { padding: 2.5rem; }

.card-num {
  font-family: var(--font-display);
  font-size: 4rem; font-weight: 300;
  color: rgba(37,99,235,0.15);
  line-height: 1;
  margin-bottom: 1rem;
}
.card-icon {
  width: 44px; height: 44px;
  border: 1px solid var(--blue-border);
  border-radius: var(--radius-sm);
  display: flex; align-items: center; justify-content: center;
  margin-bottom: 1.5rem;
  background: var(--blue-dim);
  font-family: var(--font-mono);
  font-size: 0.7rem; font-weight: 700;
  color: var(--blue-glow);
  letter-spacing: 0.1em;
}

/* ── VERTICAL CARDS ───────────────────────────────── */
.vertical-card {
  background: var(--bg-card);
  border: 1px solid var(--line);
  border-radius: var(--radius-lg);
  backdrop-filter: blur(16px);
  overflow: hidden;
  transition: var(--transition);
}
.vertical-card:hover {
  border-color: var(--blue-border);
  box-shadow: var(--shadow-blue);
  transform: translateY(-3px);
}
.vertical-card-header {
  padding: 2.5rem; border-bottom: 1px solid var(--line);
  display: flex; align-items: flex-start; justify-content: space-between;
}
.vertical-card-body { padding: 2.5rem; }
.vertical-badge {
  font-family: var(--font-mono);
  font-size: 0.6rem; font-weight: 600;
  letter-spacing: 0.2em; text-transform: uppercase;
  color: var(--blue-glow); border: 1px solid var(--blue-border);
  padding: 0.25rem 0.6rem; border-radius: 2px; white-space: nowrap;
}
.vertical-title {
  font-family: var(--font-display);
  font-size: clamp(1.6rem, 2.5vw, 2.2rem);
  font-weight: 400; color: var(--text-primary);
  line-height: 1.15;
}
.tag-pill {
  display: inline-block;
  font-family: var(--font-mono); font-size: 0.6rem;
  letter-spacing: 0.12em; text-transform: uppercase;
  color: var(--text-secondary);
  border: 1px solid var(--line);
  border-radius: 2px; padding: 0.4rem 0.8rem;
  transition: var(--transition-fast);
}
.tag-pill:hover { border-color: var(--blue-border); color: var(--blue-glow); }
.tags-row { display: flex; flex-wrap: wrap; gap: 0.5rem; }

/* ── METRIC BOXES ─────────────────────────────────── */
.metric-box {
  background: var(--silver-faint);
  border: 1px solid var(--line);
  border-radius: var(--radius-sm);
  padding: 1.25rem 1.5rem;
}
.metric-box .label { margin-bottom: 0.4rem; }
.metric-box p { font-size: 0.9rem; color: var(--text-secondary); }

/* ── FEATURE ROW ──────────────────────────────────── */
.feature-row {
  display: flex; gap: 1.5rem;
  align-items: flex-start;
  padding: 1.5rem 0;
  border-bottom: 1px solid var(--line);
}
.feature-row:last-child { border-bottom: none; }
.feature-check {
  width: 20px; height: 20px; flex-shrink: 0;
  border-radius: 50%; border: 1px solid var(--blue-border);
  display: flex; align-items: center; justify-content: center;
  margin-top: 2px; font-size: 0.55rem; color: var(--blue-glow);
}

/* ── TIMELINE STEPS ───────────────────────────────── */
.step-card {
  padding: 2rem 1.5rem 2rem 2rem;
  position: relative;
}
.step-card::before {
  content: attr(data-step);
  position: absolute; top: 2rem; left: 0;
  font-family: var(--font-mono); font-size: 0.6rem;
  letter-spacing: 0.2em; color: var(--blue-bright);
  transform: rotate(-90deg) translateX(-100%);
  transform-origin: top left;
  white-space: nowrap;
}
.step-card-inner {
  border: 1px solid var(--line); border-radius: var(--radius-md);
  padding: 2rem; background: var(--bg-card);
  backdrop-filter: blur(16px);
  height: 100%;
  transition: var(--transition);
}
.step-card-inner:hover {
  border-color: var(--blue-border);
  box-shadow: var(--shadow-blue);
}
.step-num-lg {
  font-family: var(--font-display);
  font-size: 3rem; font-weight: 300;
  color: rgba(59,130,246,0.2); line-height: 1;
  margin-bottom: 1rem;
}
.step-time {
  font-family: var(--font-mono); font-size: 0.6rem;
  letter-spacing: 0.2em; text-transform: uppercase;
  color: var(--blue-glow); border: 1px solid var(--blue-border);
  padding: 0.2rem 0.5rem; border-radius: 2px;
  display: inline-block; margin-bottom: 1rem;
}

/* ── DIFFERENTIALS ────────────────────────────────── */
.diff-item {
  display: flex; gap: 1.5rem; align-items: flex-start;
  padding: 1.75rem;
  border: 1px solid var(--line); border-radius: var(--radius-md);
  background: var(--bg-card);
  backdrop-filter: blur(12px);
  transition: var(--transition);
}
.diff-item:hover { border-color: var(--blue-border); transform: translateX(4px); }
.diff-num {
  font-family: var(--font-display); font-size: 1.8rem; font-weight: 300;
  color: rgba(59,130,246,0.3); flex-shrink: 0; line-height: 1;
}

/* ── RELATION MODEL ───────────────────────────────── */
.model-card {
  border: 1px solid var(--line); border-radius: var(--radius-md);
  background: var(--bg-card); backdrop-filter: blur(16px);
  padding: 2rem; transition: var(--transition);
  position: relative; overflow: hidden;
}
.model-card::before {
  content: ''; position: absolute; top: 0; left: 0;
  width: 3px; height: 100%;
  background: var(--blue-core);
  transform: scaleY(0); transform-origin: bottom;
  transition: transform 0.4s cubic-bezier(0.16,1,0.3,1);
}
.model-card:hover::before { transform: scaleY(1); }
.model-card:hover { border-color: var(--blue-border); transform: translateY(-3px); }
.model-card.featured { border-color: var(--blue-border); box-shadow: var(--shadow-blue); }
.model-card.featured::before { transform: scaleY(1); }
.model-tag {
  font-family: var(--font-mono); font-size: 0.58rem;
  letter-spacing: 0.2em; text-transform: uppercase;
  color: var(--blue-glow); margin-bottom: 1rem;
  display: block;
}
.model-recommended {
  position: absolute; top: 1rem; right: 1rem;
  font-family: var(--font-mono); font-size: 0.55rem;
  letter-spacing: 0.15em; text-transform: uppercase;
  color: var(--blue-glow); border: 1px solid var(--blue-border);
  padding: 0.2rem 0.5rem; border-radius: 2px;
}

/* ── ACCENT LINE ──────────────────────────────────── */
.accent-line {
  display: flex; align-items: center; gap: 1.5rem;
  padding: 2.5rem 3rem;
  background: linear-gradient(90deg, var(--blue-dim), transparent);
  border-left: 2px solid var(--blue-core);
  border-radius: 0 var(--radius-md) var(--radius-md) 0;
}

/* ── BUTTONS ──────────────────────────────────────── */
.btn {
  display: inline-flex; align-items: center; gap: 0.6rem;
  font-family: var(--font-mono); font-size: 0.68rem;
  font-weight: 600; letter-spacing: 0.15em; text-transform: uppercase;
  padding: 0.85rem 2rem; border-radius: var(--radius-sm);
  transition: var(--transition-fast);
}
.btn-primary {
  background: var(--blue-core); color: #fff;
  border: 1px solid var(--blue-core);
}
.btn-primary:hover {
  background: var(--blue-bright); box-shadow: 0 0 30px rgba(37,99,235,0.4);
  transform: translateY(-2px);
}
.btn-outline {
  background: transparent; color: var(--blue-glow);
  border: 1px solid var(--blue-border);
}
.btn-outline:hover { background: var(--blue-dim); border-color: var(--blue-bright); }

/* ── FOOTER COMPONENTS ───────────────────────────── */
.footer-logo { display: flex; align-items: center; gap: 10px; margin-bottom: 1rem; }
.footer-logo img { height: 30px; }
.footer-heading {
  font-family: var(--font-mono); font-size: 0.6rem;
  letter-spacing: 0.25em; text-transform: uppercase;
  color: var(--text-muted); margin-bottom: 1.25rem;
}
.footer-links { display: flex; flex-direction: column; gap: 0.6rem; }
.footer-links a {
  font-size: 0.85rem; color: var(--text-secondary);
  transition: var(--transition-fast);
}
.footer-links a:hover { color: var(--text-primary); padding-left: 4px; }
.footer-email {
  font-family: var(--font-display);
  font-size: clamp(1.4rem, 2.5vw, 2.2rem);
  font-weight: 400; color: var(--blue-glow);
  border-bottom: 1px solid var(--blue-border);
  transition: var(--transition-fast); display: inline-block;
}
.footer-email:hover { color: var(--text-primary); border-bottom-color: transparent; }
.footer-copy {
  font-family: var(--font-mono); font-size: 0.6rem;
  letter-spacing: 0.2em; text-transform: uppercase; color: var(--text-muted);
}

/* ── NAVIGATION MOBILE OVERLAY ───────────────────── */
.nav-mobile-overlay {
  display: none; position: fixed; inset: 0;
  background: rgba(14,21,37,0.95); backdrop-filter: blur(20px);
  z-index: 99; flex-direction: column;
  align-items: center; justify-content: center; gap: 2rem;
}
.nav-mobile-overlay.open { display: flex; }
.nav-mobile-overlay a {
  font-family: var(--font-display); font-size: 2rem;
  font-weight: 300; color: var(--text-secondary);
  transition: var(--transition-fast);
}
.nav-mobile-overlay a:hover { color: var(--text-primary); }

/* ── LANGUAGE SWITCHER ────────────────────────────── */
.lang-switcher {
  display: flex; align-items: center; gap: 0.35rem;
  margin-left: 0.75rem;
  padding-left: 0.75rem;
  border-left: 1px solid var(--line);
}
.lang-sep { color: var(--text-muted); font-size: 0.65rem; line-height: 1; pointer-events: none; }
.lang-btn {
  font-family: var(--font-mono);
  font-size: 0.62rem; font-weight: 600;
  letter-spacing: 0.12em; color: var(--text-muted);
  padding: 0.2rem 0.35rem; border-radius: 2px;
  transition: var(--transition-fast);
  background: transparent; cursor: pointer; border: 1px solid transparent;
}
.lang-btn:hover { color: var(--text-primary); }
.lang-btn.active { color: var(--blue-glow); background: var(--blue-dim); border-color: var(--blue-border); }
.lang-switcher--mobile { display: none; margin-left: 0; padding-left: 0; border-left: none; }
@media (max-width: 768px) {
  .lang-switcher:not(.lang-switcher--mobile) { display: none; }
  .lang-switcher--mobile { display: flex; }
}

/* ── DIFF GRID ─────────────────────────────────────── */
.diff-grid {
  display: grid;
  grid-template-columns: repeat(2, 1fr);
  gap: 1rem;
}

@media (max-width: 768px) {
  .diff-grid {
    grid-template-columns: 1fr;
  }
}

/* ── IMAGE SECTIONS RESPONSIVE ────────────────────── */
@media (max-width: 768px) {
  /* Split sections (text + image) collapse */
  [style*="grid-template-columns:1fr 1fr"] {
    display: flex !important;
    flex-direction: column !important;
    gap: 2.5rem !important;
  }
  /* Vertical sector image grid */
  [style*="grid-template-columns:repeat(3,1fr)"] {
    display: flex !important;
    flex-direction: column !important;
    gap: 1rem !important;
  }
  /* Hide secondary overlap image on mobile */
  [style*="position:absolute; bottom:-2rem; right:-2rem;"] {
    display: none !important;
  }
  /* Dossier book mockup centered on mobile */
  [style*="perspective(800px) rotateY(-8deg)"] {
    transform: none !important;
    margin: 0 auto;
  }
}