/* ===== RESET & BASE ===== */
*, *::before, *::after { box-sizing: border-box; margin: 0; padding: 0; }

:root {
  --green-dark:   #1a5c2a;
  --green-mid:    #2e7d32;
  --green-light:  #4caf50;
  --green-pale:   #e8f5e9;
  --amber:        #f9a825;
  --amber-light:  #fff8e1;
  --brown:        #5d4037;
  --text-dark:    #1b2a1d;
  --text-mid:     #3e5240;
  --text-light:   #6a7b6c;
  --white:        #ffffff;
  --shadow-sm:    0 2px 8px rgba(0,0,0,.08);
  --shadow-md:    0 4px 18px rgba(0,0,0,.12);
  --shadow-lg:    0 8px 32px rgba(0,0,0,.16);
  --radius-sm:    8px;
  --radius-md:    14px;
  --radius-lg:    22px;
  --transition:   all .25s ease;
}

html { scroll-behavior: smooth; }

body {
  font-family: 'Segoe UI', system-ui, -apple-system, sans-serif;
  background: #f4f9f4;
  color: var(--text-dark);
  min-height: 100vh;
}

/* ===== HEADER / NAV ===== */
header {
  background: linear-gradient(135deg, var(--green-dark) 0%, var(--green-mid) 100%);
  box-shadow: var(--shadow-md);
  position: sticky;
  top: 0;
  z-index: 100;
}

.nav-inner {
  max-width: 1200px;
  margin: 0 auto;
  padding: 0 24px;
  display: flex;
  align-items: center;
  justify-content: space-between;
  height: 68px;
}

.brand {
  display: flex;
  align-items: center;
  gap: 12px;
  text-decoration: none;
}

.brand-logo {
  width: 44px;
  height: 44px;
  background: var(--amber);
  border-radius: 50%;
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 22px;
  box-shadow: 0 2px 8px rgba(249,168,37,.4);
}

.brand-text { line-height: 1.1; }
.brand-text .name {
  font-size: 1.35rem;
  font-weight: 800;
  color: var(--white);
  letter-spacing: .5px;
}
.brand-text .tagline {
  font-size: .7rem;
  color: rgba(255,255,255,.75);
  letter-spacing: 1.5px;
  text-transform: uppercase;
}

nav { display: flex; gap: 6px; }

nav a {
  color: rgba(255,255,255,.85);
  text-decoration: none;
  font-size: .88rem;
  font-weight: 500;
  padding: 7px 16px;
  border-radius: 20px;
  transition: var(--transition);
}
nav a:hover, nav a.active {
  background: rgba(255,255,255,.18);
  color: var(--white);
}

/* ===== HERO ===== */
.hero {
  background: linear-gradient(160deg, var(--green-dark) 0%, #2e7d32 45%, #388e3c 100%);
  color: var(--white);
  padding: 72px 24px 80px;
  text-align: center;
  position: relative;
  overflow: hidden;
}

.hero::before {
  content: "";
  position: absolute;
  inset: 0;
  background:
    radial-gradient(circle at 20% 80%, rgba(255,255,255,.04) 0%, transparent 50%),
    radial-gradient(circle at 80% 20%, rgba(249,168,37,.06) 0%, transparent 50%);
}

.hero-content { position: relative; max-width: 720px; margin: 0 auto; }

.hero-badge {
  display: inline-flex;
  align-items: center;
  gap: 7px;
  background: rgba(255,255,255,.12);
  border: 1px solid rgba(255,255,255,.2);
  border-radius: 20px;
  padding: 6px 16px;
  font-size: .8rem;
  letter-spacing: 1px;
  text-transform: uppercase;
  margin-bottom: 20px;
}

.hero h1 {
  font-size: clamp(2rem, 5vw, 3.2rem);
  font-weight: 900;
  line-height: 1.15;
  margin-bottom: 16px;
}
.hero h1 span { color: var(--amber); }

.hero p {
  font-size: 1.1rem;
  color: rgba(255,255,255,.82);
  max-width: 540px;
  margin: 0 auto 36px;
  line-height: 1.7;
}

.hero-stats {
  display: flex;
  justify-content: center;
  gap: 40px;
  flex-wrap: wrap;
}

.stat { text-align: center; }
.stat .num {
  font-size: 1.8rem;
  font-weight: 800;
  color: var(--amber);
  display: block;
}
.stat .lbl {
  font-size: .75rem;
  color: rgba(255,255,255,.7);
  text-transform: uppercase;
  letter-spacing: 1px;
}

/* ===== SECTION WRAPPER ===== */
.section {
  max-width: 1200px;
  margin: 0 auto;
  padding: 56px 24px;
}

.section-header {
  text-align: center;
  margin-bottom: 40px;
}
.section-header h2 {
  font-size: 1.9rem;
  font-weight: 800;
  color: var(--green-dark);
  margin-bottom: 8px;
}
.section-header p {
  color: var(--text-light);
  font-size: .97rem;
  max-width: 520px;
  margin: 0 auto;
}

/* ===== CROP TYPE SELECTOR ===== */
.type-grid {
  display: grid;
  grid-template-columns: repeat(auto-fill, minmax(148px, 1fr));
  gap: 14px;
  margin-bottom: 48px;
}

.type-card {
  background: var(--white);
  border: 2px solid transparent;
  border-radius: var(--radius-md);
  padding: 20px 14px;
  text-align: center;
  cursor: pointer;
  transition: var(--transition);
  box-shadow: var(--shadow-sm);
  user-select: none;
}

.type-card:hover {
  transform: translateY(-4px);
  box-shadow: var(--shadow-md);
  border-color: var(--green-light);
}

.type-card.selected {
  border-color: var(--green-mid);
  background: var(--green-pale);
  box-shadow: 0 0 0 4px rgba(46,125,50,.12), var(--shadow-md);
  transform: translateY(-4px);
}

.type-icon {
  font-size: 2.2rem;
  margin-bottom: 10px;
  display: block;
  line-height: 1;
}

.type-name {
  font-size: .88rem;
  font-weight: 700;
  color: var(--text-dark);
  display: block;
}

.type-card.selected .type-name { color: var(--green-dark); }

/* ===== CROP RESULTS PANEL ===== */
#crop-results {
  display: none;
  animation: fadeSlideUp .35s ease both;
}

#crop-results.visible { display: block; }

@keyframes fadeSlideUp {
  from { opacity: 0; transform: translateY(24px); }
  to   { opacity: 1; transform: translateY(0); }
}

.results-header {
  display: flex;
  align-items: center;
  justify-content: space-between;
  flex-wrap: wrap;
  gap: 12px;
  margin-bottom: 24px;
  padding-bottom: 18px;
  border-bottom: 2px solid var(--green-pale);
}

.results-title {
  display: flex;
  align-items: center;
  gap: 12px;
}

.results-title .icon { font-size: 2rem; }

.results-title h3 {
  font-size: 1.4rem;
  font-weight: 800;
  color: var(--green-dark);
}

.results-title p {
  font-size: .85rem;
  color: var(--text-light);
  margin-top: 2px;
}

.results-badge {
  background: var(--green-mid);
  color: var(--white);
  border-radius: 20px;
  padding: 5px 16px;
  font-size: .82rem;
  font-weight: 600;
}

/* ===== CROP CARDS ===== */
.crop-grid {
  display: grid;
  grid-template-columns: repeat(auto-fill, minmax(260px, 1fr));
  gap: 18px;
}

.crop-card {
  background: var(--white);
  border-radius: var(--radius-md);
  padding: 22px 20px;
  box-shadow: var(--shadow-sm);
  border: 1px solid #e6f0e7;
  transition: var(--transition);
  position: relative;
  overflow: hidden;
}

.crop-card::before {
  content: "";
  position: absolute;
  top: 0; left: 0; right: 0;
  height: 4px;
  background: linear-gradient(90deg, var(--green-mid), var(--green-light));
}

.crop-card:hover {
  transform: translateY(-4px);
  box-shadow: var(--shadow-md);
  border-color: var(--green-light);
  cursor: pointer;
}

.crop-card.selected {
  border-color: var(--green-mid);
  background: var(--green-pale);
  box-shadow: 0 0 0 4px rgba(46,125,50,.12), var(--shadow-md);
  transform: translateY(-4px);
}

.crop-card-header {
  display: flex;
  align-items: center;
  gap: 14px;
  margin-bottom: 14px;
}

.crop-emoji {
  width: 52px;
  height: 52px;
  background: var(--green-pale);
  border-radius: var(--radius-sm);
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 1.8rem;
  flex-shrink: 0;
}

.crop-name {
  font-size: 1.05rem;
  font-weight: 700;
  color: var(--text-dark);
}

.crop-season-tag {
  display: inline-block;
  margin-top: 4px;
  background: var(--amber-light);
  color: #7c5800;
  border-radius: 10px;
  padding: 2px 10px;
  font-size: .73rem;
  font-weight: 600;
}

.crop-meta {
  display: flex;
  flex-direction: column;
  gap: 6px;
}

.meta-row {
  display: flex;
  align-items: center;
  gap: 8px;
  font-size: .82rem;
  color: var(--text-light);
}

.meta-row .meta-icon { font-size: .95rem; width: 18px; text-align: center; }
.meta-row strong { color: var(--text-mid); }

/* ===== CROP CARD FOOTER (view seeds CTA) ===== */
.crop-card-footer {
  margin-top: 14px;
  padding-top: 12px;
  border-top: 1px dashed #d4e8d5;
  text-align: right;
}

.view-seeds-btn {
  font-size: .78rem;
  font-weight: 700;
  color: var(--green-mid);
  letter-spacing: .3px;
}

.crop-card:hover .view-seeds-btn { color: var(--green-dark); }

/* ===== SEED PANEL ===== */
#seed-panel {
  display: none;
  margin-top: 40px;
  animation: fadeSlideUp .35s ease both;
}

#seed-panel.visible { display: block; }

.seed-panel-header {
  display: flex;
  align-items: center;
  justify-content: space-between;
  flex-wrap: wrap;
  gap: 12px;
  margin-bottom: 24px;
  padding: 20px 24px;
  background: linear-gradient(135deg, var(--green-pale), #f0faf0);
  border-radius: var(--radius-md);
  border: 2px solid #c8e6c9;
}

.seed-panel-title {
  display: flex;
  align-items: center;
  gap: 14px;
}

.seed-panel-crop-icon {
  width: 52px;
  height: 52px;
  background: var(--white);
  border-radius: var(--radius-sm);
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 1.9rem;
  box-shadow: var(--shadow-sm);
  flex-shrink: 0;
}

.seed-panel-title h3 {
  font-size: 1.3rem;
  font-weight: 800;
  color: var(--green-dark);
}

.seed-panel-title p {
  font-size: .8rem;
  color: var(--text-light);
  margin-top: 3px;
}

/* ===== SEED GRID & CARDS ===== */
.seed-grid {
  display: grid;
  grid-template-columns: repeat(auto-fill, minmax(240px, 1fr));
  gap: 16px;
}

.seed-card {
  background: var(--white);
  border-radius: var(--radius-md);
  padding: 18px 18px;
  box-shadow: var(--shadow-sm);
  border: 1px solid #e0f2e0;
  transition: var(--transition);
  position: relative;
  overflow: hidden;
}

.seed-card::before {
  content: "";
  position: absolute;
  top: 0; left: 0; right: 0;
  height: 3px;
  background: linear-gradient(90deg, var(--amber), #ffcc02);
}

.seed-card:hover {
  transform: translateY(-3px);
  box-shadow: var(--shadow-md);
  border-color: var(--amber);
}

.seed-card-top {
  display: flex;
  align-items: center;
  gap: 12px;
  margin-bottom: 12px;
}

.seed-icon {
  width: 44px;
  height: 44px;
  background: var(--amber-light);
  border-radius: var(--radius-sm);
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 1.5rem;
  flex-shrink: 0;
}

.seed-name {
  font-size: .97rem;
  font-weight: 700;
  color: var(--text-dark);
}

.seed-type-tag {
  display: inline-block;
  margin-top: 3px;
  background: #e8f5e9;
  color: var(--green-dark);
  border-radius: 10px;
  padding: 2px 9px;
  font-size: .7rem;
  font-weight: 600;
}

.seed-meta {
  display: flex;
  flex-direction: column;
  gap: 5px;
}

/* ===== EMPTY / PROMPT STATE ===== */
.empty-state {
  text-align: center;
  padding: 56px 24px;
  color: var(--text-light);
}
.empty-state .empty-icon { font-size: 4rem; margin-bottom: 16px; }
.empty-state h3 { font-size: 1.2rem; font-weight: 700; color: var(--text-mid); margin-bottom: 8px; }
.empty-state p { font-size: .9rem; }

/* ===== FOOTER ===== */
footer {
  background: var(--green-dark);
  color: rgba(255,255,255,.75);
  text-align: center;
  padding: 28px 24px;
  font-size: .85rem;
  margin-top: 40px;
}
footer strong { color: var(--white); }

/* ===== RESPONSIVE ===== */
@media (max-width: 600px) {
  .nav-inner { padding: 0 16px; }
  nav { display: none; }
  .hero { padding: 48px 16px 56px; }
  .hero-stats { gap: 24px; }
  .type-grid { grid-template-columns: repeat(auto-fill, minmax(120px, 1fr)); }
  .crop-grid  { grid-template-columns: 1fr; }
  .seed-grid  { grid-template-columns: 1fr; }
  .section { padding: 40px 16px; }
}