/* ── Landing Page Styles ── */

.landing-body {
  background: var(--white);
  color: var(--text);
}

/* NAV */
.land-nav {
  position: sticky;
  top: 0;
  z-index: 100;
  background: rgba(255,255,255,0.95);
  backdrop-filter: blur(8px);
  border-bottom: 1px solid var(--gray-light);
}
.land-nav-inner {
  max-width: 1100px;
  margin: 0 auto;
  padding: 0 24px;
  height: 64px;
  display: flex;
  align-items: center;
  justify-content: space-between;
}
.land-logo {
  font-size: 1.3rem;
  font-weight: 800;
  color: var(--green-dark);
}
.land-nav-links {
  display: flex;
  align-items: center;
  gap: 24px;
}
.land-nav-links a {
  font-size: 0.9rem;
  color: var(--text);
  text-decoration: none;
  font-weight: 500;
  transition: color .2s;
}
.land-nav-links a:hover { color: var(--green); text-decoration: none; }
.btn-nav-login {
  padding: 7px 16px;
  border: 1.5px solid var(--green);
  border-radius: 6px;
  color: var(--green) !important;
  font-weight: 600 !important;
}
.btn-nav-login:hover { background: var(--green-pale); }
.btn-nav-cta {
  padding: 7px 18px;
  background: var(--green);
  color: var(--white) !important;
  border-radius: 6px;
  font-weight: 600 !important;
}
.btn-nav-cta:hover { background: var(--green-dark) !important; }

/* HERO */
.land-hero {
  background: linear-gradient(135deg, #f0faf3 0%, #e8f5eb 100%);
  padding: 80px 24px;
}
.land-hero-inner {
  max-width: 1100px;
  margin: 0 auto;
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 60px;
  align-items: center;
}
.land-badge {
  display: inline-block;
  background: var(--green-pale);
  color: var(--green-dark);
  border: 1px solid var(--green-light);
  padding: 4px 14px;
  border-radius: 20px;
  font-size: 0.8rem;
  font-weight: 600;
  margin-bottom: 16px;
}
.land-hero-text h1 {
  font-size: 2.6rem;
  font-weight: 800;
  color: var(--green-dark);
  line-height: 1.2;
  margin-bottom: 20px;
}
.land-hero-text p {
  font-size: 1.05rem;
  color: #495057;
  line-height: 1.7;
  margin-bottom: 28px;
}
.land-hero-btns {
  display: flex;
  gap: 14px;
  flex-wrap: wrap;
  margin-bottom: 16px;
}
.btn-hero-primary {
  display: inline-flex;
  align-items: center;
  padding: 14px 28px;
  background: var(--green);
  color: var(--white);
  border-radius: 8px;
  font-weight: 700;
  font-size: 1rem;
  text-decoration: none;
  transition: background .2s;
}
.btn-hero-primary:hover { background: var(--green-dark); text-decoration: none; color: var(--white); }
.btn-hero-secondary {
  display: inline-flex;
  align-items: center;
  padding: 14px 24px;
  background: transparent;
  border: 2px solid var(--green);
  color: var(--green);
  border-radius: 8px;
  font-weight: 600;
  font-size: 1rem;
  text-decoration: none;
  transition: all .2s;
}
.btn-hero-secondary:hover { background: var(--green-pale); text-decoration: none; }
.land-hero-note {
  font-size: 0.82rem;
  color: var(--gray);
  margin: 0;
}

/* Chat preview */
.land-chat-preview {
  background: var(--white);
  border-radius: 16px;
  box-shadow: 0 8px 40px rgba(0,0,0,0.12);
  overflow: hidden;
  max-width: 420px;
  margin: 0 auto;
}
.preview-header {
  background: #f1f3f5;
  padding: 10px 16px;
  display: flex;
  align-items: center;
  gap: 6px;
}
.preview-dot {
  width: 10px; height: 10px;
  border-radius: 50%;
}
.preview-dot.red    { background: #ff5f57; }
.preview-dot.yellow { background: #febc2e; }
.preview-dot.green  { background: #28c840; }
.preview-title { margin-left: 8px; font-size: 0.8rem; color: var(--gray); font-weight: 600; }
.preview-messages { padding: 16px; display: flex; flex-direction: column; gap: 12px; }
.preview-msg { display: flex; gap: 8px; align-items: flex-end; }
.preview-msg.user { flex-direction: row-reverse; }
.preview-avatar { font-size: 1.2rem; flex-shrink: 0; }
.preview-bubble {
  background: var(--bg);
  border-radius: 10px;
  padding: 10px 14px;
  font-size: 0.85rem;
  line-height: 1.5;
  max-width: 280px;
}
.preview-msg.user .preview-bubble { background: var(--green); color: var(--white); }

/* STATS */
.land-stats {
  background: var(--green-dark);
  color: var(--white);
  padding: 48px 24px;
}
.land-container {
  max-width: 1100px;
  margin: 0 auto;
  padding: 0 24px;
}
.stats-row {
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  gap: 32px;
  text-align: center;
}
.stat-num {
  font-size: 2.4rem;
  font-weight: 800;
  color: var(--green-light);
}
.stat-desc {
  font-size: 0.82rem;
  opacity: 0.8;
  margin-top: 6px;
  line-height: 1.4;
}

/* SECTIONS */
.land-section { padding: 80px 0; }
.land-section-alt { background: var(--bg); }
.land-section-header {
  text-align: center;
  margin-bottom: 48px;
}
.land-section-header h2 {
  font-size: 2rem;
  font-weight: 800;
  color: var(--green-dark);
  margin-bottom: 10px;
}
.land-section-header p { color: var(--gray); font-size: 1rem; }

/* BENEFITS */
.benefits-grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 24px;
}
.benefit-card {
  background: var(--white);
  border-radius: var(--radius);
  padding: 28px;
  box-shadow: var(--shadow);
  border-top: 3px solid var(--green-light);
  transition: transform .2s;
}
.benefit-card:hover { transform: translateY(-4px); }
.benefit-icon { font-size: 2rem; margin-bottom: 14px; }
.benefit-card h3 { font-size: 1rem; color: var(--green-dark); margin-bottom: 10px; }
.benefit-card p { font-size: 0.88rem; color: #495057; line-height: 1.6; }

/* STEPS */
.steps-row {
  display: flex;
  align-items: center;
  justify-content: center;
  gap: 16px;
  flex-wrap: wrap;
}
.step {
  background: var(--white);
  border-radius: var(--radius);
  padding: 28px 20px;
  text-align: center;
  box-shadow: var(--shadow);
  width: 200px;
  flex-shrink: 0;
}
.step-num {
  width: 44px; height: 44px;
  background: var(--green);
  color: var(--white);
  border-radius: 50%;
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 1.2rem;
  font-weight: 800;
  margin: 0 auto 14px;
}
.step h3 { font-size: 0.95rem; color: var(--green-dark); margin-bottom: 8px; }
.step p  { font-size: 0.82rem; color: var(--gray); line-height: 1.5; }
.step-arrow { font-size: 1.5rem; color: var(--green-light); font-weight: 300; }

/* RESEARCH */
.research-grid {
  display: grid;
  grid-template-columns: repeat(2, 1fr);
  gap: 24px;
}
.research-card {
  background: var(--white);
  border-radius: var(--radius);
  padding: 24px;
  box-shadow: var(--shadow);
  border-left: 4px solid var(--green-light);
}
.research-source {
  font-size: 0.75rem;
  font-weight: 700;
  color: var(--green);
  text-transform: uppercase;
  letter-spacing: 0.5px;
  margin-bottom: 10px;
}
.research-card p {
  font-size: 0.88rem;
  color: #495057;
  line-height: 1.7;
  margin-bottom: 12px;
  font-style: italic;
}
.research-ref { font-size: 0.75rem; color: var(--gray); }

/* CTA FINAL */
.land-cta {
  background: linear-gradient(135deg, var(--green-dark), var(--green));
  color: var(--white);
  padding: 80px 24px;
  text-align: center;
}
.land-cta h2 { font-size: 2rem; font-weight: 800; margin-bottom: 12px; }
.land-cta p  { font-size: 1rem; opacity: .9; margin-bottom: 28px; }
.land-cta-sub { margin-top: 16px; font-size: 0.88rem; opacity: .8; }
.land-cta-sub a { color: var(--white); font-weight: 600; }

/* ROADMAP */
.roadmap-grid {
  display: grid;
  grid-template-columns: repeat(2, 1fr);
  gap: 24px;
}
.roadmap-card {
  background: var(--white);
  border: 1.5px solid var(--gray-light);
  border-radius: 12px;
  padding: 28px 24px;
  position: relative;
  transition: box-shadow .2s, border-color .2s;
}
.roadmap-card:hover {
  box-shadow: 0 6px 24px rgba(0,0,0,.08);
  border-color: var(--green-light);
}
.roadmap-badge {
  display: inline-block;
  font-size: .72rem;
  font-weight: 700;
  text-transform: uppercase;
  letter-spacing: .05em;
  padding: 3px 10px;
  border-radius: 20px;
  margin-bottom: 16px;
  background: #e8f5e9;
  color: var(--green-dark);
}
.roadmap-card:nth-child(3) .roadmap-badge,
.roadmap-card:nth-child(4) .roadmap-badge {
  background: #e3f2fd;
  color: #1565c0;
}
.roadmap-icon {
  font-size: 2rem;
  margin-bottom: 10px;
  line-height: 1;
}
.roadmap-card h3 {
  font-size: 1.05rem;
  font-weight: 700;
  color: var(--dark);
  margin-bottom: 8px;
}
.roadmap-card p {
  font-size: .88rem;
  color: var(--gray);
  line-height: 1.6;
}

/* FOOTER */
.land-footer {
  background: var(--green-dark);
  color: rgba(255,255,255,.8);
  padding: 40px 0 20px;
}
.land-footer-inner {
  display: grid;
  grid-template-columns: 2fr 1fr;
  gap: 40px;
  margin-bottom: 32px;
}
.land-footer-inner strong { color: var(--white); display: block; margin-bottom: 8px; font-size: 1rem; }
.land-footer-inner p, .land-footer-inner a {
  font-size: 0.85rem;
  color: rgba(255,255,255,.65);
  display: block;
  margin-bottom: 6px;
  text-decoration: none;
}
.land-footer-inner a:hover { color: var(--white); }
.land-footer-bottom {
  border-top: 1px solid rgba(255,255,255,.1);
  padding-top: 20px;
  font-size: 0.8rem;
  text-align: center;
  opacity: .5;
}

/* RESPONSIVE */
@media (max-width: 900px) {
  .land-hero-inner { grid-template-columns: 1fr; }
  .land-hero-visual { display: none; }
  .land-hero-text h1 { font-size: 2rem; }
  .benefits-grid { grid-template-columns: 1fr 1fr; }
  .stats-row { grid-template-columns: repeat(2, 1fr); }
  .research-grid { grid-template-columns: 1fr; }
  .roadmap-grid { grid-template-columns: 1fr; }
  .land-footer-inner { grid-template-columns: 1fr; }
  .land-nav-links a:not(.btn-nav-login):not(.btn-nav-cta) { display: none; }
}
@media (max-width: 600px) {
  .benefits-grid { grid-template-columns: 1fr; }
  .steps-row { flex-direction: column; }
  .step-arrow { transform: rotate(90deg); }
  .stats-row { grid-template-columns: 1fr 1fr; }
}