#home {
  position: relative;
  overflow: hidden;
  text-align: center;
}

.hero-content {
  max-width: 760px;
  position: relative;
}

.hero-tagline {
  display: inline-block;
  font-family: 'Rajdhani', sans-serif;
  font-size: 0.8rem;
  font-weight: 600;
  letter-spacing: 0.3em;
  color: var(--red);
  text-transform: uppercase;
  margin-bottom: 20px;
  opacity: 0;
  animation: fadeUp 0.7s 0.2s ease forwards;
}

.hero-title {
  font-family: 'Rajdhani', sans-serif;
  font-size: clamp(3rem, 9vw, 7rem);
  font-weight: 700;
  line-height: 0.95;
  letter-spacing: -0.02em;
  margin-bottom: 28px;
  opacity: 0;
  animation: fadeUp 0.7s 0.35s ease forwards;
}

.hero-title span {
  color: var(--red);
}

.hero-desc {
  font-size: clamp(1rem, 2vw, 1.2rem);
  font-weight: 300;
  color: var(--white-dim);
  max-width: 520px;
  margin: 0 auto 44px;
  line-height: 1.7;
  opacity: 0;
  animation: fadeUp 0.7s 0.5s ease forwards;
}

.hero-cta {
  display: flex;
  gap: 12px;
  justify-content: center;
  flex-wrap: wrap;
  opacity: 0;
  animation: fadeUp 0.7s 0.65s ease forwards;
}

.hero-btn-icon {
  width: 18px;
  height: 18px;
  opacity: 0.85;
}

#zarcalc {
  background: transparent;
}

.zarcalc-hero {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 48px;
  max-width: 1100px;
  width: 100%;
  align-items: start;
  margin-bottom: 72px;
}

.zarcalc-text {
  padding-top: 8px;
}

.zarcalc-title {
  font-family: 'Rajdhani', sans-serif;
  font-size: clamp(2.2rem, 5vw, 4rem);
  font-weight: 700;
  letter-spacing: 0.01em;
  line-height: 0.95;
  margin-bottom: 20px;
}

.zarcalc-title .zar {
  color: var(--red);
}

.zarcalc-desc {
  color: var(--white-dim);
  font-weight: 300;
  line-height: 1.7;
  font-size: 1.05rem;
  margin-bottom: 32px;
}

.zarcalc-actions {
  display: flex;
  gap: 10px;
  flex-wrap: wrap;
}

.feature-pills {
  display: flex;
  flex-wrap: wrap;
  gap: 8px;
  margin-bottom: 32px;
}

.zarcalc-preview {
  border-radius: var(--radius);
  overflow: hidden;
  position: relative;
  background: var(--black-3);
  border: 1px solid var(--glass-border);
  aspect-ratio: 16/10;
  display: flex;
  align-items: center;
  justify-content: center;
}

.zarcalc-preview .screenshot {
  position: absolute;
  inset: 0;
  width: 100%;
  height: 100%;
  object-fit: cover;
  border-radius: var(--radius);
  display: block;
}

.preview-inner {
  display: flex;
  flex-direction: column;
  align-items: center;
  gap: 16px;
  color: var(--white-dim);
  text-align: center;
  padding: 24px;
  position: relative;
  z-index: 1;
}

.zarcalc-preview:has(.screenshot) .preview-inner {
  display: none;
}

.zarcalc-preview:has(.screenshot) .preview-grid,
.zarcalc-preview:has(.screenshot) .preview-curve {
  display: none;
}

.preview-icon {
  width: 56px;
  height: 56px;
  opacity: 0.35;
}

.preview-label {
  font-family: 'Rajdhani', sans-serif;
  font-size: 0.85rem;
  letter-spacing: 0.15em;
  opacity: 0.5;
}

.preview-grid {
  position: absolute;
  inset: 0;
  opacity: 0.07;
  background-image:
    linear-gradient(rgba(245,245,245,0.5) 1px, transparent 1px),
    linear-gradient(90deg, rgba(245,245,245,0.5) 1px, transparent 1px);
  background-size: 32px 32px;
}

.preview-curve {
  position: absolute;
  bottom: 20%;
  left: 5%;
  right: 5%;
  height: 40%;
  opacity: 0.5;
  overflow: visible;
}

.download-grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 16px;
  max-width: 900px;
  width: 100%;
  margin-bottom: 56px;
}

.dl-card {
  padding: 24px 20px;
  position: relative;
  overflow: hidden;
}

.dl-card.available {
  border-color: rgba(232,21,10,0.25);
}

.dl-os {
  font-family: 'Rajdhani', sans-serif;
  font-size: 1.2rem;
  font-weight: 700;
  letter-spacing: 0.08em;
  margin-bottom: 4px;
  display: flex;
  align-items: center;
  gap: 10px;
}

.dl-os .os-icon {
  width: 22px;
  height: 22px;
}

.dl-version {
  font-size: 0.78rem;
  color: var(--red);
  font-weight: 600;
  margin-bottom: 12px;
}

.dl-soon {
  font-size: 0.78rem;
  color: rgba(245,245,245,0.35);
  margin-bottom: 12px;
  font-style: italic;
}

.dl-card .btn {
  width: 100%;
  justify-content: center;
}

.available-badge {
  position: absolute;
  top: 12px;
  right: 12px;
  background: var(--red);
  color: var(--white);
  font-size: 0.65rem;
  font-weight: 700;
  letter-spacing: 0.1em;
  padding: 3px 8px;
  border-radius: 100px;
}

.versions-section {
  max-width: 900px;
  width: 100%;
  margin-bottom: 56px;
}

.versions-header {
  display: flex;
  align-items: center;
  justify-content: space-between;
  margin-bottom: 20px;
  flex-wrap: wrap;
  gap: 12px;
}

.versions-title {
  font-family: 'Rajdhani', sans-serif;
  font-size: 1.5rem;
  font-weight: 700;
  letter-spacing: 0.05em;
}

.version-entry {
  padding: 16px 20px;
  margin-bottom: 10px;
  display: grid;
  grid-template-columns: auto 1fr auto;
  gap: 16px;
  align-items: center;
}

.version-entry.has-downloads {
  grid-template-columns: 1fr;
  gap: 12px;
}

.version-entry.has-downloads .version-meta {
  display: grid;
  grid-template-columns: auto 1fr auto;
  gap: 16px;
  align-items: center;
}

.version-downloads {
  display: flex;
  gap: 8px;
  flex-wrap: wrap;
}

.version-dl-btn {
  display: inline-flex;
  align-items: center;
  gap: 6px;
  padding: 6px 14px;
  border-radius: var(--radius-sm);
  font-family: 'Rajdhani', sans-serif;
  font-size: 0.82rem;
  font-weight: 600;
  letter-spacing: 0.05em;
  background: var(--red-soft);
  border: 1px solid rgba(232,21,10,0.25);
  color: var(--white-dim);
  cursor: pointer;
  transition: all var(--transition);
  text-decoration: none;
}

.version-dl-btn:hover {
  background: var(--red);
  border-color: var(--red);
  color: var(--white);
  transform: translateY(-1px);
}

.version-dl-btn img {
  width: 14px;
  height: 14px;
  opacity: 0.7;
}

.version-tag {
  font-family: 'Rajdhani', sans-serif;
  font-size: 1rem;
  font-weight: 700;
  letter-spacing: 0.08em;
  color: var(--red);
  white-space: nowrap;
}

.version-name {
  font-weight: 500;
}

.version-date {
  font-size: 0.8rem;
  color: var(--white-dim);
  white-space: nowrap;
}

.version-badge {
  display: inline-block;
  padding: 2px 8px;
  border-radius: 100px;
  font-size: 0.65rem;
  font-weight: 700;
  letter-spacing: 0.08em;
}

.badge-stable {
  background: rgba(34,197,94,0.15);
  color: #4ade80;
  border: 1px solid rgba(74,222,128,0.2);
}

.badge-beta {
  background: rgba(251,146,60,0.15);
  color: #fb923c;
  border: 1px solid rgba(251,146,60,0.2);
}

.badge-alpha {
  background: var(--red-soft);
  color: var(--red);
  border: 1px solid rgba(232,21,10,0.2);
}

.libs-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(260px, 1fr));
  gap: 16px;
  max-width: 900px;
  width: 100%;
}

.lib-card {
  padding: 24px;
}

.lib-icon {
  width: 36px;
  height: 36px;
  margin-bottom: 14px;
  opacity: 0.9;
}

.lib-name {
  font-family: 'Rajdhani', sans-serif;
  font-size: 1.15rem;
  font-weight: 700;
  letter-spacing: 0.05em;
  margin-bottom: 6px;
  color: var(--red);
}

.lib-desc {
  font-size: 0.88rem;
  color: var(--white-dim);
  line-height: 1.55;
}

.lib-link {
  display: inline-flex;
  align-items: center;
  gap: 6px;
  margin-top: 14px;
  font-size: 0.82rem;
  font-weight: 600;
  color: var(--white-dim);
  border-bottom: 1px solid transparent;
  transition: color var(--transition), border-color var(--transition);
}

.lib-link:hover {
  color: var(--red);
  border-bottom-color: var(--red);
}

#about {
  background: transparent;
  padding-top: 60px;
}

.about-grid {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 32px;
  max-width: 1000px;
  width: 100%;
}

.about-card {
  padding: 32px;
}

.about-card-title {
  font-family: 'Rajdhani', sans-serif;
  font-size: 1.3rem;
  font-weight: 700;
  letter-spacing: 0.05em;
  margin-bottom: 10px;
  display: flex;
  align-items: center;
  gap: 10px;
}

.about-card-icon {
  width: 28px;
  height: 28px;
  flex-shrink: 0;
}

.about-card-desc {
  font-size: 0.92rem;
  color: var(--white-dim);
  line-height: 1.65;
}

footer {
  position: relative;
  z-index: 1;
  padding: 40px 32px 24px;
  border-top: 1px solid var(--glass-border);
  display: flex;
  flex-wrap: wrap;
  gap: 16px;
  align-items: center;
  justify-content: space-between;
  background: rgba(10,10,10,0.4);
}

.footer-logo {
  font-family: 'Rajdhani', sans-serif;
  font-size: 1.2rem;
  font-weight: 700;
  letter-spacing: 0.06em;
}

.footer-logo span {
  color: var(--red);
}

.footer-copy {
  font-size: 0.8rem;
  color: rgba(245,245,245,0.35);
}

.footer-links {
  display: flex;
  gap: 20px;
  flex-wrap: wrap;
}

.footer-links a {
  font-size: 0.83rem;
  color: var(--white-dim);
  transition: color var(--transition);
}

.footer-links a:hover {
  color: var(--red);
}

@media (max-width: 768px) {
  .zarcalc-hero { grid-template-columns: 1fr; }
  .zarcalc-preview { display: none; }
  .download-grid { grid-template-columns: 1fr; }
  .about-grid { grid-template-columns: 1fr; }
  .version-entry { grid-template-columns: auto 1fr; }
  .version-entry.has-downloads .version-meta { grid-template-columns: auto 1fr; }
  .version-date { display: none; }
  section { padding: 100px 16px 60px; }
}

@media (max-width: 480px) {
  .hero-cta { flex-direction: column; align-items: center; }
  .libs-grid { grid-template-columns: 1fr; }
}