/* ── Landing page styles ── */
/* Inherits :root vars, fonts, body, .card from styles.css */

/* ── Nav ── */
.landing-nav {
  position: fixed;
  top: 0;
  left: 0;
  right: 0;
  z-index: 100;
  background: var(--card);
  border-bottom: 1px solid var(--card-border);
  backdrop-filter: blur(var(--glass-blur));
  -webkit-backdrop-filter: blur(var(--glass-blur));
  transform: translateY(-100%);
  transition: transform 0.3s ease;
}

.landing-nav.nav-visible {
  transform: translateY(0);
}

.landing-nav-inner {
  max-width: 960px;
  margin: 0 auto;
  padding: 10px 20px;
  display: flex;
  justify-content: space-between;
  align-items: center;
}

.nav-brand {
  font-family: "Indie Flower", cursive;
  font-size: 1.1rem;
}

.nav-links {
  display: flex;
  gap: 20px;
  font-size: 0.85rem;
}

.nav-links a {
  color: var(--muted);
  text-decoration: none;
  transition: color 0.2s;
}

.nav-links a:hover {
  color: var(--text);
}

.nav-links a.nav-cta {
  background: var(--accent);
  color: #fff;
  padding: 5px 12px;
  border-radius: 6px;
  font-weight: 600;
}

/* ── Landing layout ── */
.landing {
  padding-top: 48px;
}

.landing-section {
  margin: 64px 0;
}

.landing-section h2 {
  margin-bottom: 12px;
}

.landing-section .subtitle {
  color: var(--muted);
  font-size: 1rem;
  margin-bottom: 28px;
  max-width: 600px;
}

/* ── Hero ── */
.hero {
  text-align: center;
  padding: 40px 0 32px;
}

.hero h1 {
  margin-bottom: 4px;
}

.hero .hero-subtitle {
  font-size: clamp(1rem, 2.5vw, 1.3rem);
  color: var(--muted);
  font-style: italic;
  margin-bottom: 12px;
}

.hero .hero-tagline {
  font-size: 0.95rem;
  color: var(--text);
  max-width: 540px;
  margin: 0 auto 28px;
  line-height: 1.6;
}

.hero-img {
  width: 100%;
  border-radius: 12px;
}

.scroll-hint {
  margin-top: 28px;
  color: var(--muted);
  font-size: 1.4rem;
  animation: bounce 2s infinite;
}

@keyframes bounce {
  0%, 100% { transform: translateY(0); }
  50% { transform: translateY(6px); }
}

/* ── Two-column layout ── */
.two-col {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 28px;
  align-items: center;
}

.two-col-text {
  line-height: 1.7;
  font-size: 0.95rem;
}

.two-col-text p {
  margin-bottom: 12px;
}

.two-col figure {
  margin: 0;
}

.two-col figure img {
  width: 100%;
  border-radius: 10px;
}

.two-col figcaption {
  font-size: 0.8rem;
  color: var(--muted);
  margin-top: 8px;
  text-align: center;
}

/* ── Pipeline diagram ── */
.pipeline {
  display: flex;
  flex-direction: column;
  align-items: center;
  gap: 12px;
  padding: 8px 0;
}

.phase-box {
  border: 2px dashed var(--card-border);
  border-radius: 16px;
  padding: 28px 20px 20px;
  position: relative;
  width: 100%;
}

.phase-label {
  position: absolute;
  top: -11px;
  left: 20px;
  background: linear-gradient(135deg, #dfe6f0 0%, #e8ecf4 30%, #f0e6f0 60%, #e4eaf4 100%);
  padding: 0 10px;
  font-family: "JetBrains Mono", monospace;
  font-size: 0.75rem;
  font-weight: 600;
  letter-spacing: 0.06em;
  text-transform: uppercase;
  color: var(--muted);
}

.pipe-row {
  display: flex;
  gap: 16px;
  align-items: center;
  justify-content: center;
  flex-wrap: wrap;
}

.pipe-node {
  background: var(--card);
  border: 1px solid var(--card-border);
  border-radius: 10px;
  padding: 10px 16px;
  backdrop-filter: blur(var(--glass-blur));
  -webkit-backdrop-filter: blur(var(--glass-blur));
  font-size: 0.85rem;
  font-weight: 600;
  text-align: center;
  box-shadow: 0 4px 16px rgba(0, 0, 0, 0.04);
  min-width: 100px;
}

.pipe-node .tech-badge {
  display: block;
  font-family: "JetBrains Mono", monospace;
  font-size: 0.65rem;
  font-weight: 400;
  color: var(--muted);
  margin-top: 4px;
}

.pipe-arrow {
  color: var(--muted);
  font-size: 1.2rem;
  flex-shrink: 0;
}

.pipe-arrow-down {
  color: var(--muted);
  font-size: 1.2rem;
  text-align: center;
}

.pipe-branch {
  display: flex;
  gap: 16px;
  align-items: center;
  justify-content: center;
  flex-wrap: wrap;
}

.pipe-plus {
  color: var(--muted);
  font-weight: 700;
}

/* loop indicator */
.loop-label {
  font-family: "JetBrains Mono", monospace;
  font-size: 0.75rem;
  color: var(--muted);
  text-align: center;
  border: 1px dashed var(--card-border);
  border-radius: 8px;
  padding: 6px 14px;
  margin-top: 4px;
}

/* ── Showcase (demo walkthrough) ── */
.showcase {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 28px;
  align-items: center;
  margin: 40px 0;
}

.showcase-text h3 {
  margin-bottom: 8px;
}

.showcase-text p {
  font-size: 0.92rem;
  line-height: 1.65;
  color: var(--text);
}

.showcase-img {
  margin: 0;
}

.showcase-img img {
  width: 100%;
  border-radius: 10px;
}

.showcase-img figcaption {
  font-size: 0.8rem;
  color: var(--muted);
  margin-top: 6px;
  text-align: center;
}

.showcase-pair {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 10px;
}

.showcase-pair img {
  width: 100%;
  border-radius: 10px;
}

.showcase-pair figcaption {
  font-size: 0.75rem;
  color: var(--muted);
  margin-top: 4px;
  text-align: center;
}

/* ── Weave section ── */
.weave-hero-img {
  width: 100%;
  border-radius: 12px;
  margin-bottom: 20px;
}

.weave-highlights {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 14px;
  margin-bottom: 24px;
}

.weave-highlight {
  background: var(--glass-inner);
  border: 1px solid var(--glass-inner-border);
  border-radius: 10px;
  padding: 14px;
  font-size: 0.88rem;
  line-height: 1.5;
  backdrop-filter: blur(10px);
  -webkit-backdrop-filter: blur(10px);
}

.weave-highlight strong {
  display: block;
  margin-bottom: 4px;
  font-size: 0.8rem;
  text-transform: uppercase;
  letter-spacing: 0.04em;
  color: var(--muted);
}

.code-preview {
  background: var(--glass-inner);
  border: 1px solid var(--glass-inner-border);
  border-radius: 10px;
  padding: 14px;
  font-family: "JetBrains Mono", monospace;
  font-size: 0.78rem;
  line-height: 1.5;
  overflow-x: auto;
  white-space: pre-wrap;
  color: var(--text);
  backdrop-filter: blur(10px);
  -webkit-backdrop-filter: blur(10px);
}

/* ── Expandable ── */
.expandable {
  margin-top: 16px;
}

.expandable-trigger {
  background: rgba(0, 0, 0, 0.03);
  border: 1px dashed var(--card-border);
  border-radius: 8px;
  padding: 10px 14px;
  cursor: pointer;
  display: flex;
  align-items: center;
  gap: 8px;
  font-family: "JetBrains Mono", monospace;
  font-size: 0.82rem;
  color: var(--muted);
  width: 100%;
  text-align: left;
  transition: background 0.2s;
}

.expandable-trigger:hover {
  background: rgba(0, 0, 0, 0.06);
}

.expandable-icon {
  font-size: 1.1rem;
  font-style: normal;
  transition: transform 0.25s ease;
  flex-shrink: 0;
  line-height: 1;
}

.expandable-trigger[aria-expanded="true"] .expandable-icon {
  transform: rotate(45deg);
}

.expandable-content {
  overflow: hidden;
  max-height: 0;
  transition: max-height 0.4s ease;
}

.expandable-content.open {
  max-height: 3000px;
}

.expandable-inner {
  padding: 16px 0 0;
  font-size: 0.9rem;
  line-height: 1.65;
}

.expandable-inner pre {
  font-size: 0.78rem;
}

/* ── CTA ── */
.cta-section {
  text-align: center;
  padding: 40px 0;
}

.cta-btn {
  display: inline-block;
  background: var(--accent);
  color: #fff;
  font-weight: 700;
  font-size: 1.05rem;
  padding: 14px 32px;
  border-radius: 10px;
  text-decoration: none;
  transition: opacity 0.2s;
}

.cta-btn:hover {
  opacity: 0.85;
}

.cta-btn-outline {
  background: transparent;
  color: var(--accent);
  border: 2px solid var(--accent);
}

.cta-btn-outline:hover {
  background: var(--accent);
  color: #fff;
  opacity: 1;
}

.cta-row {
  display: flex;
  gap: 14px;
  justify-content: center;
  flex-wrap: wrap;
}

/* ── Footer ── */
.landing-footer {
  text-align: center;
  padding: 24px 0 40px;
  font-size: 0.82rem;
  color: var(--muted);
}

/* ── Responsive ── */
@media (max-width: 600px) {
  .landing {
    padding-top: 24px;
  }

  .landing-section {
    margin: 40px 0;
  }

  .two-col {
    grid-template-columns: 1fr;
  }

  .showcase {
    grid-template-columns: 1fr;
  }


  .showcase-pair {
    grid-template-columns: 1fr;
  }

  .pipe-row {
    flex-direction: column;
  }

  .pipe-arrow {
    transform: rotate(90deg);
  }

  .pipe-branch {
    flex-direction: column;
  }

  .weave-highlights {
    grid-template-columns: 1fr;
  }

  .nav-links {
    display: none;
  }

  .hero {
    padding: 24px 0 20px;
  }
}