/* Layout utama */
.page {
  margin: 0;
  min-height: 100vh;
  font-family: system-ui, -apple-system, BlinkMacSystemFont, "Segoe UI", sans-serif;
  background: radial-gradient(circle at top, #111827 0, #020617 55%);
  color: #e5e7eb;
}

/* Topbar */
.topbar {
  position: sticky;
  top: 0;
  z-index: 20;
  background: rgba(15, 23, 42, 0.9);
  backdrop-filter: blur(12px);
  border-bottom: 1px solid #1f2937;
}
.topbar-inner {
  max-width: 1120px;
  margin: 0 auto;
  padding: 12px 16px;
  display: flex;
  align-items: center;
  justify-content: space-between;
}
.brand {
  display: flex;
  align-items: center;
  gap: 10px;
}
.brand-logo {
  font-size: 24px;
}
.brand-title {
  font-weight: 700;
  letter-spacing: 0.06em;
}
.brand-subtitle {
  font-size: 12px;
  color: #9ca3af;
}
.nav-links a {
  margin-left: 16px;
  font-size: 14px;
  color: #9ca3af;
  text-decoration: none;
}
.nav-links a:hover {
  color: #f9fafb;
}

/* Layout dua kolom */
.layout {
  max-width: 1120px;
  margin: 24px auto;
  padding: 0 16px 32px;
  display: grid;
  grid-template-columns: minmax(0, 1.4fr) minmax(0, 1fr);
  gap: 32px;
}
@media (max-width: 900px) {
  .layout {
    grid-template-columns: 1fr;
  }
}

/* Hero kiri */
.hero h1 {
  font-size: 28px;
  margin-bottom: 8px;
}
.hero-text {
  font-size: 14px;
  color: #d1d5db;
  max-width: 600px;
}
.hero-badges {
  margin-top: 14px;
  display: flex;
  flex-wrap: wrap;
  gap: 8px;
}
.badge {
  font-size: 12px;
  padding: 4px 10px;
  border-radius: 999px;
  background: rgba(34, 197, 94, 0.15);
  color: #bbf7d0;
  border: 1px solid rgba(34, 197, 94, 0.4);
}

/* Kartu fitur */
.info-grid {
  margin-top: 20px;
  display: grid;
  gap: 12px;
}
@media (min-width: 900px) {
  .info-grid {
    grid-template-columns: repeat(3, minmax(0, 1fr));
  }
}
.info-card {
  background: rgba(15, 23, 42, 0.85);
  border-radius: 16px;
  padding: 14px 16px;
  border: 1px solid #1f2937;
  font-size: 13px;
}
.info-card h3 {
  margin: 0 0 6px;
  font-size: 14px;
}

/* Kartu kanan (analisis daun) */
.card {
  background: rgba(15, 23, 42, 0.95);
  border-radius: 18px;
  padding: 20px 20px 24px;
  border: 1px solid #1f2937;
  box-shadow: 0 18px 45px rgba(0, 0, 0, 0.45);
}
.section-title {
  margin-top: 0;
  margin-bottom: 4px;
  font-size: 18px;
}
.subtitle {
  font-size: 13px;
  color: #9ca3af;
}
.small-text {
  font-size: 12px;
  color: #9ca3af;
}
.big-value {
  font-size: 18px;
  font-weight: 700;
}

/* Tombol */
.btn-primary {
  background: #22c55e;
  color: #052e16;
  border-radius: 999px;
  border: none;
  padding: 8px 16px;
  font-weight: 600;
  cursor: pointer;
}
.btn-primary:hover {
  background: #16a34a;
}
.btn-secondary {
  display: inline-block;
  margin-top: 8px;
  padding: 6px 14px;
  border-radius: 999px;
  border: 1px solid #4b5563;
  color: #e5e7eb;
  font-size: 13px;
  text-decoration: none;
}
.btn-secondary:hover {
  background: #111827;
}

/* Pesan status */
.message {
  font-size: 12px;
}
.message.info {
  color: #e5e7eb;
}
.message.success {
  color: #bbf7d0;
}
.message.error {
  color: #fecaca;
}

/* Kartu hasil & saran */
.result-card {
  background-color: #020617;
  border-radius: 14px;
  border: 1px solid #1f2937;
}
.advice-box {
  margin-top: 10px;
  padding: 10px 12px;
  border-radius: 10px;
  background: rgba(15, 118, 110, 0.15);
  border: 1px solid rgba(34, 197, 94, 0.4);
  font-size: 12px;
  color: #d1fae5;
}
.advice-box h4 {
  margin: 0 0 4px;
  font-size: 13px;
}
.advice-box ul {
  margin: 0;
  padding-left: 18px;
}

/* Tips section */
.tips-section {
  max-width: 1120px;
  margin: 0 auto 32px;
  padding: 0 16px;
}
.tips-card {
  background: rgba(15, 23, 42, 0.95);
  border-radius: 18px;
  padding: 16px 18px;
  border: 1px solid #1f2937;
  font-size: 13px;
}
.tips-card ul {
  margin-top: 8px;
  padding-left: 20px;
}

/* Footer */
.footer {
  text-align: center;
  font-size: 11px;
  color: #6b7280;
  padding: 12px 0 20px;
}