:root {
  --forest: #2e7d32;
  --leaf: #81c784;
  --sprout: #a5d6a7;
  --background: #f7fbf7;
  --surface: #ffffff;
  --surface-soft: #eef7ec;
  --text: #1d2b23;
  --muted: #576d5f;
  --shadow: 0 22px 50px rgba(22, 47, 21, 0.08);
  --radius: 28px;
}

* {
  box-sizing: border-box;
}

html {
  scroll-behavior: smooth;
}

body {
  margin: 0;
  font-family: Inter, system-ui, -apple-system, BlinkMacSystemFont, "Segoe UI", sans-serif;
  color: var(--text);
  background: linear-gradient(180deg, #f8fcf8 0%, #eef7ec 100%);
}

.page-shell {
  overflow-x: hidden;
  scroll-snap-type: y proximity;
}

.page-shell > header,
.page-shell > section {
  scroll-snap-align: center;
  transition: opacity 0.45s ease, transform 0.45s ease, filter 0.45s ease;
}

.page-shell > header:not(.in-view),
.page-shell > section:not(.in-view) {
  opacity: 0.72;
  transform: scale(0.997);
  filter: brightness(0.93);
}

button,
input,
select {
  font: inherit;
}

a {
  color: inherit;
  text-decoration: none;
}

.hero {
  min-height: 100vh;
  display: grid;
  align-items: center;
  padding: 32px 28px 64px;
  position: relative;
  overflow: hidden;
  background: radial-gradient(circle at top left, rgba(255, 255, 255, 0.35), transparent 28%),
    linear-gradient(180deg, rgba(46, 125, 50, 0.18), rgba(255, 255, 255, 0.05)),
    url("data:image/svg+xml,%3Csvg xmlns='http://www.w3.org/2000/svg' viewBox='0 0 1600 900'%3E%3Cdefs%3E%3ClinearGradient id='g' x1='0'%20y1='0'%20x2='1'%20y2='1'%3E%3Cstop offset='0'%20stop-color='%232e7d32'/%3E%3Cstop offset='1'%20stop-color='%2381c784'/%3E%3C/linearGradient%3E%3C/defs%3E%3Crect width='1600'%20height='900'%20fill='%23182516'/%3E%3Cpath d='M0 700L160 620L250 660L340 600L430 650L520 590L610 650L700 600L780 640L880 600L980 640L1080 590L1180 620L1280 580L1400 620L1600 590V900H0Z' fill='%23394734'/%3E%3Cpath d='M1260 390H1380V650H1260Z' fill='%23384135'/%3E%3Cpath d='M1110 430H1210V720H1110Z' fill='%23314f38'/%3E%3Cpath d='M1000 490H1080V680H1000Z' fill='%233d5d47'/%3E%3Ccircle cx='1340' cy='180' r='28' fill='%23a5d6a7'/%3E%3Ccircle cx='1450' cy='120' r='18' fill='%23eaf7ed'/%3E%3Ccircle cx='150' cy='150' r='16' fill='%23eaf7ed'/%3E%3C/svg%3E") no-repeat center/cover;
}

.hero::after {
  content: "";
  position: absolute;
  inset: 0;
  background: radial-gradient(circle at center, rgba(255, 255, 255, 0.12), transparent 36%);
  pointer-events: none;
}

.hero-inner {
  position: relative;
  z-index: 1;
  max-width: 1180px;
  margin: 0 auto;
  width: 100%;
}

.nav {
  display: flex;
  justify-content: space-between;
  align-items: center;
  gap: 20px;
  flex-wrap: wrap;
}

.brand {
  display: inline-flex;
  align-items: center;
  gap: 12px;
  font-weight: 900;
  letter-spacing: 0.2em;
  text-transform: uppercase;
  font-size: clamp(1.8rem, 3.2vw, 2.6rem);
  color: transparent;
  background: linear-gradient(90deg, #d8f7c6 0%, #b4ea92 40%, #8fca5f 70%, #639243 100%);
  -webkit-background-clip: text;
  background-clip: text;
}

.nav-links {
  display: flex;
  gap: 18px;
}

.nav-links a {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  padding: 12px 18px;
  border-radius: 999px;
  background: linear-gradient(135deg, #1f3a20 0%, #2e7d32 45%, #205423 100%);
  color: #ffffff;
  font-size: 1rem;
  font-weight: 600;
  text-decoration: none;
  box-shadow: 0 18px 36px rgba(12, 48, 15, 0.28);
}

.nav-links a:hover,
.nav-links a:focus-visible {
  transform: translateY(-1px);
  box-shadow: 0 22px 42px rgba(13, 55, 17, 0.34);
}

.hero-copy {
  padding: 36px 0 0;
  max-width: 940px;
  margin: 0 auto;
  text-align: center;
}

.hero-copy h1 {
  font-size: clamp(4rem, 6vw, 5.8rem);
  line-height: 1.02;
  margin: 0 auto 24px;
  max-width: 100%;
  letter-spacing: 0.03em;
  color: transparent;
  background: linear-gradient(90deg, #d8f7c6 0%, #b4ea92 40%, #8fca5f 70%, #639243 100%);
  background-clip: text;
  -webkit-background-clip: text;
  text-shadow: 0 0 28px rgba(196, 250, 176, 0.28);
}

.hero-copy p {
  font-size: 1.1rem;
  max-width: 720px;
  color: rgba(255, 255, 255, 0.92);
  margin: 0 0 28px;
}

.hero-actions {
  display: flex;
  flex-wrap: wrap;
  gap: 14px;
  align-items: center;
}

.btn {
  border: 0;
  border-radius: 999px;
  padding: 14px 24px;
  cursor: pointer;
  transition: transform 0.24s ease, box-shadow 0.24s ease, background-color 0.24s ease;
}

.btn-primary {
  background: linear-gradient(135deg, var(--leaf), var(--forest));
  color: white;
  box-shadow: 0 18px 32px rgba(46, 125, 50, 0.28);
}

.btn-secondary {
  background: rgba(255, 255, 255, 0.18);
  color: white;
}

.btn:hover {
  transform: translateY(-2px);
}

.hero-chips {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(140px, 1fr));
  gap: 12px;
  margin-top: 30px;
}

.chip {
  border-radius: 999px;
  padding: 12px 16px;
  background: rgba(255, 255, 255, 0.13);
  color: white;
  border: 1px solid rgba(255, 255, 255, 0.12);
  font-size: 0.96rem;
}

.section {
  min-height: 92vh;
  display: grid;
  align-items: center;
  padding: 72px 28px;
  max-width: 1180px;
  margin: 0 auto;
}

.section-header {
  text-align: center;
  margin-bottom: 42px;
}

.section.in-view {
  opacity: 1;
  transform: scale(1.03);
  filter: brightness(1.03);
}
.section.in-view .section-header h2 {
  transform: scale(1.08);
}
.section.in-view .section-header p {
  transform: scale(1.04);
}
.section.in-view .feature-card,
.section.in-view .stat-card,
.section.in-view .support-card,
.section.in-view .faq-card {
  transform: translateY(-6px) scale(1.04);
}

.section-header h2,
.hero-copy h1,
.panel-header span,
.feature-card h3,
.stat-card h3,
.support-card h3,
.faq-card h4,
.recommendation-card h4 {
  letter-spacing: -0.02em;
}

.section-header h2 {
  font-size: clamp(2.8rem, 4vw, 3.4rem);
  line-height: 1.05;
}

.section-header p,
.feature-card p,
.stat-card p,
.support-card p,
.faq-card p {
  font-size: 1.05rem;
  line-height: 1.75;
}

.feature-card h3,
.stat-card h3,
.support-card h3,
.faq-card h4 {
  font-size: 1.35rem;
}

.recommendation-card {
  position: relative;
  border: 1px solid rgba(46, 125, 50, 0.14);
  overflow: hidden;
}

.recommendation-card-header {
  display: flex;
  justify-content: space-between;
  align-items: flex-start;
  gap: 16px;
  margin-bottom: 16px;
}

.recommendation-card h4 {
  margin: 0;
  font-size: 1.15rem;
}

.recommendation-card p.scientific-name {
  margin: 0 0 16px;
  color: var(--muted);
  font-style: italic;
}

.confidence-pill {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  min-width: 72px;
  padding: 8px 14px;
  border-radius: 999px;
  background: rgba(46, 125, 50, 0.12);
  color: var(--forest);
  font-weight: 700;
}

.plant-stats-grid {
  display: grid;
  gap: 12px;
  grid-template-columns: repeat(auto-fit, minmax(140px, 1fr));
  margin-top: 12px;
}

.plant-stats-grid li {
  display: flex;
  justify-content: space-between;
  gap: 8px;
  padding: 12px 14px;
  border-radius: 16px;
  background: #f5fbf5;
  border: 1px solid rgba(46, 125, 50, 0.08);
}

.recommendation-card ul.reasons {
  margin: 18px 0 0;
  padding: 0;
  list-style: disc inside;
  color: var(--muted);
}

.recommendation-card ul.reasons li {
  margin-bottom: 10px;
  line-height: 1.6;
}

.details-toggle {
  width: 100%;
  margin-top: 18px;
  border: none;
  background: rgba(46, 125, 50, 0.1);
  color: var(--forest);
  border-radius: 999px;
  padding: 12px 18px;
  cursor: pointer;
  transition: background-color 0.22s ease, transform 0.22s ease;
}

.details-toggle:hover {
  background: rgba(46, 125, 50, 0.18);
  transform: translateY(-1px);
}

.detail-panel {
  margin-top: 14px;
  padding: 18px 20px;
  border-radius: 22px;
  background: #f5f9f3;
  border: 1px solid rgba(46, 125, 50, 0.08);
  display: none;
}

.detail-panel.open {
  display: block;
}

.feature-card,
.stat-card,
.support-card,
.faq-card,
.recommendation-card,
.summary-card,
.visualization-card,
.report-card,
.simulator-card {
  transition: transform 0.24s ease, box-shadow 0.24s ease, border-color 0.24s ease;
}

.feature-card:hover,
.stat-card:hover,
.support-card:hover,
.faq-card:hover,
.recommendation-card:hover,
.summary-card:hover,
.visualization-card:hover,
.report-card:hover,
.simulator-card:hover {
  transform: translateY(-3px);
  box-shadow: 0 26px 50px rgba(22, 47, 21, 0.12);
  border-color: rgba(46, 125, 50, 0.18);
}

.section-header h2 {
  font-size: clamp(2rem, 2.6vw, 3rem);
  margin: 0;
}

.section-header p {
  color: var(--muted);
  max-width: 740px;
  margin: 16px auto 0;
  line-height: 1.7;
}

.feature-grid,
.supported-grid,
.benefit-grid,
.faq-grid {
  display: grid;
  gap: 20px;
}

.feature-grid {
  grid-template-columns: repeat(auto-fit, minmax(220px, 1fr));
}

.feature-card,
.stat-card,
.support-card,
.faq-card,
.recommendation-card,
.summary-card,
.visualization-card,
.panel-card,
.report-card,
.simulator-card {
  background: var(--surface);
  border-radius: var(--radius);
  box-shadow: var(--shadow);
  padding: 34px;
  min-height: 260px;
}

.feature-card {
  min-height: 220px;
}

.feature-card .icon,
.stat-card .icon,
.support-card .icon {
  display: none;
}

.feature-card h3,
.stat-card h3,
.support-card h3 {
  margin: 0 0 12px;
  font-size: 1.15rem;
}

.feature-card p,
.support-card p,
.faq-card p,
.summary-card p,
.report-card p {
  margin: 0;
  color: var(--muted);
  line-height: 1.7;
}

.support-card {
  display: grid;
  gap: 14px;
}

.support-card small {
  display: block;
  color: var(--muted);
  margin-top: 12px;
}

.faq-grid {
  grid-template-columns: repeat(auto-fit, minmax(260px, 1fr));
}

.faq-card {
  border: 1px solid rgba(46, 125, 50, 0.12);
}

.faq-card h4 {
  margin-top: 0;
  margin-bottom: 10px;
}

.planner-grid {
  display: grid;
  grid-template-columns: minmax(280px, 320px) 1.5fr minmax(280px, 320px);
  gap: 24px;
  align-items: start;
}

.sidebar,
.info-panel {
  display: flex;
  flex-direction: column;
  gap: 16px;
}

.sidebar h3,
.info-panel h3 {
  margin: 0 0 8px;
}

.form-group {
  display: grid;
  gap: 10px;
}

.form-group label {
  font-size: 0.95rem;
  color: var(--text);
}

.form-group input,
.form-group select {
  width: 100%;
  border-radius: 14px;
  border: 1px solid rgba(46, 125, 50, 0.18);
  background: #ffffff;
  color: var(--text);
  padding: 14px 16px;
}

.form-group input::placeholder {
  color: rgba(87, 109, 95, 0.55);
}

.sidebar .section-label,
.info-panel .section-label {
  font-size: 0.92rem;
  color: var(--muted);
  text-transform: uppercase;
  letter-spacing: 0.12em;
}

.form-actions {
  display: flex;
  justify-content: stretch;
}

.panel-main {
  display: grid;
  gap: 24px;
}

.panel-header {
  display: flex;
  justify-content: space-between;
  align-items: center;
  gap: 12px;
  padding: 22px 26px;
  border-radius: 999px;
  background: rgba(255, 255, 255, 0.8);
  box-shadow: var(--shadow);
}

.panel-header span {
  color: var(--forest);
  font-weight: 700;
}

.recommendations {
  display: grid;
  gap: 22px;
}

.recommendation-card {
  border: 1px solid rgba(46, 125, 50, 0.14);
  border-radius: 28px;
  padding: 28px;
  background: #fbfdfa;
  box-shadow: 0 20px 36px rgba(22, 47, 21, 0.08);
}

.recommendation-summary {
  display: grid;
  gap: 10px;
}

.recommendation-grid {
  display: flex;
  flex-direction: column;
  gap: 24px;
  margin-top: 14px;
}

.recommendation-card h4 {
  margin: 0 0 10px;
}

.recommendation-card p {
  margin: 0;
  color: var(--muted);
}

.recommendation-card ul {
  list-style: none;
  padding: 0;
  margin: 16px 0 0;
  display: grid;
  gap: 8px;
}

.recommendation-card li {
  display: flex;
  justify-content: space-between;
  gap: 10px;
  color: var(--muted);
  font-size: 0.95rem;
}

.recommendation-card li span:last-child {
  color: var(--text);
  font-weight: 600;
}

.metrics-grid {
  display: grid;
  gap: 16px;
  grid-template-columns: repeat(auto-fit, minmax(160px, 1fr));
}

.metric-box {
  padding: 20px;
  border-radius: 24px;
  background: #f5fbf5;
  border: 1px solid rgba(46, 125, 50, 0.1);
}

.metric-box .label {
  display: block;
  color: var(--muted);
  margin-bottom: 10px;
  font-size: 0.95rem;
}

.metric-box .value {
  font-size: 1.8rem;
  font-weight: 800;
  color: var(--forest);
}

.stat-list {
  list-style: none;
  margin: 0;
  padding: 0;
  display: grid;
  gap: 14px;
}

.stat-list li {
  display: grid;
  gap: 6px;
}

.stat-list strong {
  font-weight: 700;
}

.info-panel .summary-card {
  padding: 24px;
}

.info-panel .summary-card h4 {
  margin-top: 0;
}

.report-card pre {
  margin: 16px 0 0;
  white-space: pre-wrap;
  background: #11221a;
  color: #d8f0d4;
  border-radius: 18px;
  padding: 18px;
  overflow-x: auto;
}

.simulator-card {
  display: grid;
  gap: 20px;
}

.range-group {
  display: grid;
  gap: 10px;
}

input[type='range'] {
  width: 100%;
  accent-color: var(--forest);
}

.output-box {
  background: #f5fcf4;
  border-radius: 20px;
  padding: 18px;
  border: 1px solid rgba(46, 125, 50, 0.12);
}

.output-box p {
  margin: 0;
  font-weight: 600;
  color: var(--forest);
}

.footnote {
  color: var(--muted);
  font-size: 0.95rem;
  margin-top: 16px;
  text-align: center;
}

@media (max-width: 1120px) {
  .planner-grid {
    grid-template-columns: 1fr;
  }
}

@media (max-width: 860px) {
  .hero {
    padding-top: 24px;
  }

  .nav {
    justify-content: center;
  }

  .nav-links {
    flex-wrap: wrap;
    justify-content: center;
  }
}

@media (max-width: 700px) {
  .hero {
    padding: 24px 18px 48px;
  }

  .section {
    padding: 48px 18px;
  }

  .feature-grid,
  .supported-grid,
  .benefit-grid,
  .faq-grid,
  .recommendation-grid,
  .metrics-grid {
    grid-template-columns: 1fr;
  }

  .hero-copy h1 {
    font-size: 2.8rem;
  }
}