/* ============================================================
   VetroBot Pro — Stylesheet
   ============================================================ */

:root {
  --primary: #0ea5e9;
  --primary-dark: #0284c7;
  --accent: #10b981;
  --bg: #f8fafc;
  --surface: #ffffff;
  --text: #0f172a;
  --text-light: #64748b;
  --border: #e2e8f0;
  --shadow: 0 4px 24px rgba(15,23,42,0.06);
  --radius: 16px;
  --radius-sm: 10px;
  --max-width: 1200px;
  --font: 'Inter', system-ui, -apple-system, sans-serif;
}

* { margin: 0; padding: 0; box-sizing: border-box; }

html { scroll-behavior: smooth; }

body {
  font-family: var(--font);
  background: var(--bg);
  color: var(--text);
  line-height: 1.6;
  -webkit-font-smoothing: antialiased;
}

.container {
  max-width: var(--max-width);
  margin: 0 auto;
  padding: 0 24px;
}

/* ---------- Header ---------- */
.header {
  position: sticky;
  top: 0;
  z-index: 100;
  background: rgba(255,255,255,0.92);
  backdrop-filter: blur(12px);
  border-bottom: 1px solid var(--border);
}

.header-inner {
  display: flex;
  align-items: center;
  justify-content: space-between;
  height: 68px;
}

.logo {
  font-size: 1.5rem;
  font-weight: 800;
  color: var(--text);
  text-decoration: none;
  letter-spacing: -0.5px;
}

.logo span { color: var(--primary); }

.nav-cta {
  background: var(--primary);
  color: #fff;
  padding: 10px 22px;
  border-radius: 50px;
  font-weight: 600;
  font-size: 0.9rem;
  text-decoration: none;
  border: none;
  cursor: pointer;
  transition: all 0.25s ease;
}

.nav-cta:hover { background: var(--primary-dark); transform: translateY(-1px); }

/* ---------- Deploy Banner ---------- */
.deploy-banner {
  background: #fef3c7;
  color: #92400e;
  padding: 10px 24px;
  font-size: 0.85rem;
  text-align: center;
  display: none;
}

.deploy-banner.visible { display: block; }

.deploy-banner a { color: #92400e; font-weight: 600; margin-left: 8px; }

/* ---------- Hero ---------- */
.hero {
  padding: 80px 0 60px;
  background: linear-gradient(180deg, #f0f9ff 0%, var(--bg) 100%);
}

.hero-grid {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 60px;
  align-items: center;
}

.hero-badge {
  display: inline-block;
  background: #dbeafe;
  color: #1e40af;
  padding: 6px 14px;
  border-radius: 50px;
  font-size: 0.78rem;
  font-weight: 700;
  text-transform: uppercase;
  letter-spacing: 0.5px;
  margin-bottom: 18px;
}

.hero h1 {
  font-size: 3rem;
  font-weight: 800;
  line-height: 1.1;
  letter-spacing: -1.5px;
  margin-bottom: 18px;
}

.hero-sub {
  font-size: 1.1rem;
  color: var(--text-light);
  margin-bottom: 28px;
  max-width: 480px;
}

.hero-price {
  display: flex;
  align-items: baseline;
  gap: 14px;
  margin-bottom: 28px;
}

.price-current {
  font-size: 2.4rem;
  font-weight: 800;
  color: var(--primary);
}

.price-old {
  font-size: 1.3rem;
  color: var(--text-light);
  text-decoration: line-through;
}

.price-save {
  background: #fee2e2;
  color: #b91c1c;
  padding: 4px 12px;
  border-radius: 50px;
  font-size: 0.8rem;
  font-weight: 700;
}

.hero-cta {
  background: var(--primary);
  color: #fff;
  padding: 16px 36px;
  border-radius: 50px;
  font-size: 1.05rem;
  font-weight: 700;
  border: none;
  cursor: pointer;
  transition: all 0.25s ease;
  box-shadow: 0 8px 24px rgba(14,165,233,0.3);
}

.hero-cta:hover {
  background: var(--primary-dark);
  transform: translateY(-2px);
  box-shadow: 0 12px 32px rgba(14,165,233,0.35);
}

.hero-img img {
  width: 100%;
  border-radius: var(--radius);
  box-shadow: var(--shadow);
}

/* ---------- Trust ---------- */
.trust {
  padding: 28px 0;
  background: var(--surface);
  border-top: 1px solid var(--border);
  border-bottom: 1px solid var(--border);
}

.trust-grid {
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  gap: 24px;
}

.trust-item {
  display: flex;
  align-items: center;
  gap: 10px;
  font-size: 0.9rem;
  font-weight: 600;
  color: var(--text-light);
}

.trust-icon { font-size: 1.3rem; }

/* ---------- Sections ---------- */
.benefits, .description, .gallery, .reviews, .faq, .checkout-section {
  padding: 80px 0;
}

.section-title {
  font-size: 2.2rem;
  font-weight: 800;
  text-align: center;
  letter-spacing: -1px;
  margin-bottom: 10px;
}

.section-sub {
  text-align: center;
  color: var(--text-light);
  font-size: 1.05rem;
  margin-bottom: 48px;
}

/* ---------- Benefits ---------- */
.benefits-grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 28px;
}

.benefit-card {
  background: var(--surface);
  padding: 32px;
  border-radius: var(--radius);
  border: 1px solid var(--border);
  transition: all 0.25s ease;
}

.benefit-card:hover {
  transform: translateY(-4px);
  box-shadow: var(--shadow);
}

.benefit-icon {
  width: 48px;
  height: 48px;
  background: #eff6ff;
  border-radius: 12px;
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 1.5rem;
  margin-bottom: 16px;
}

.benefit-card h3 {
  font-size: 1.1rem;
  font-weight: 700;
  margin-bottom: 8px;
}

.benefit-card p {
  font-size: 0.92rem;
  color: var(--text-light);
  line-height: 1.55;
}

/* ---------- Description ---------- */
.desc-grid {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 60px;
  align-items: center;
  margin-bottom: 80px;
}

.desc-grid.reverse { direction: rtl; }
.desc-grid.reverse > * { direction: ltr; }

.desc-content h2 {
  font-size: 1.8rem;
  font-weight: 800;
  letter-spacing: -0.5px;
  margin-bottom: 16px;
}

.desc-content p {
  color: var(--text-light);
  margin-bottom: 14px;
  font-size: 0.98rem;
}

.desc-content ul {
  list-style: none;
  margin-top: 16px;
}

.desc-content li {
  padding: 6px 0 6px 28px;
  position: relative;
  font-size: 0.95rem;
}

.desc-content li::before {
  content: "✓";
  position: absolute;
  left: 0;
  color: var(--accent);
  font-weight: 800;
}

.desc-img img {
  width: 100%;
  border-radius: var(--radius);
  box-shadow: var(--shadow);
}

/* ---------- Gallery ---------- */
.gallery-grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 20px;
}

.gallery-item img {
  width: 100%;
  border-radius: var(--radius-sm);
  box-shadow: var(--shadow);
  transition: transform 0.3s ease;
}

.gallery-item img:hover { transform: scale(1.02); }

/* ---------- Reviews ---------- */
.reviews-grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 24px;
}

.review-card {
  background: var(--surface);
  padding: 28px;
  border-radius: var(--radius);
  border: 1px solid var(--border);
}

.stars { color: #f59e0b; font-size: 1.1rem; margin-bottom: 12px; }

.review-text {
  font-size: 0.95rem;
  color: var(--text-light);
  line-height: 1.6;
  margin-bottom: 16px;
  font-style: italic;
}

.review-author {
  font-weight: 700;
  font-size: 0.9rem;
}

.review-verified {
  font-size: 0.8rem;
  color: var(--accent);
  margin-top: 4px;
}

/* ---------- FAQ ---------- */
.faq-list { max-width: 800px; margin: 0 auto; }

.faq-item {
  background: var(--surface);
  border: 1px solid var(--border);
  border-radius: var(--radius-sm);
  margin-bottom: 12px;
  overflow: hidden;
}

.faq-question {
  display: flex;
  justify-content: space-between;
  align-items: center;
  padding: 20px 24px;
  cursor: pointer;
  font-weight: 600;
  font-size: 1rem;
  user-select: none;
}

.faq-toggle {
  font-size: 1.4rem;
  color: var(--primary);
  transition: transform 0.2s ease;
}

.faq-item.open .faq-toggle { transform: rotate(45deg); }

.faq-answer {
  max-height: 0;
  overflow: hidden;
  transition: max-height 0.3s ease, padding 0.3s ease;
  padding: 0 24px;
  color: var(--text-light);
  font-size: 0.95rem;
  line-height: 1.6;
}

.faq-item.open .faq-answer {
  max-height: 400px;
  padding: 0 24px 20px;
}

/* ---------- Checkout ---------- */
.checkout-section { background: linear-gradient(180deg, var(--bg) 0%, #fff 100%); }

.checkout-grid {
  display: grid;
  grid-template-columns: 380px 1fr;
  gap: 48px;
  align-items: start;
}

.checkout-product {
  background: var(--surface);
  padding: 32px;
  border-radius: var(--radius);
  border: 1px solid var(--border);
  position: sticky;
  top: 100px;
}

.checkout-product img {
  width: 100%;
  border-radius: var(--radius-sm);
  margin-bottom: 16px;
}

.checkout-product h3 {
  font-size: 1.1rem;
  font-weight: 700;
  text-align: center;
}

.guarantee-box {
  background: #f0fdf4;
  border: 1px solid #bbf7d0;
  border-radius: var(--radius-sm);
  padding: 20px;
  text-align: center;
  margin-top: 20px;
}

.guarantee-box .icon { font-size: 1.8rem; margin-bottom: 6px; }

.guarantee-box h4 { font-size: 0.9rem; font-weight: 700; margin-bottom: 4px; }

.guarantee-box p { font-size: 0.85rem; color: var(--text-light); }

.checkout-form {
  background: var(--surface);
  padding: 36px;
  border-radius: var(--radius);
  border: 1px solid var(--border);
}

.checkout-form h2 {
  font-size: 1.4rem;
  font-weight: 800;
  margin-bottom: 6px;
}

.checkout-form > p {
  color: var(--text-light);
  font-size: 0.95rem;
  margin-bottom: 24px;
}

/* ---------- Form ---------- */
.form-group { margin-bottom: 18px; }

.form-group label {
  display: block;
  font-size: 0.85rem;
  font-weight: 600;
  margin-bottom: 6px;
  color: var(--text);
}

.form-group input,
.form-group textarea {
  width: 100%;
  padding: 12px 14px;
  border: 1px solid var(--border);
  border-radius: var(--radius-sm);
  font-family: var(--font);
  font-size: 0.95rem;
  transition: border-color 0.2s ease;
}

.form-group input:focus,
.form-group textarea:focus {
  outline: none;
  border-color: var(--primary);
  box-shadow: 0 0 0 3px rgba(14,165,233,0.1);
}

.form-row {
  display: grid;
  grid-template-columns: repeat(2, 1fr);
  gap: 16px;
}

.form-row.three { grid-template-columns: repeat(3, 1fr); }

.qty-selector {
  display: flex;
  align-items: center;
  gap: 0;
  border: 1px solid var(--border);
  border-radius: var(--radius-sm);
  width: fit-content;
  overflow: hidden;
}

.qty-btn {
  width: 40px;
  height: 40px;
  background: #f8fafc;
  border: none;
  font-size: 1.2rem;
  cursor: pointer;
  color: var(--text);
  transition: background 0.2s;
}

.qty-btn:hover { background: #e2e8f0; }

.qty-input {
  width: 50px;
  height: 40px;
  border: none;
  text-align: center;
  font-weight: 700;
  font-size: 1rem;
  -moz-appearance: textfield;
}

.qty-input::-webkit-outer-spin-button,
.qty-input::-webkit-inner-spin-button { -webkit-appearance: none; margin: 0; }

/* ---------- Summary ---------- */
.order-summary {
  background: #f8fafc;
  border-radius: var(--radius-sm);
  padding: 20px;
  margin: 24px 0;
}

.summary-row {
  display: flex;
  justify-content: space-between;
  padding: 8px 0;
  font-size: 0.95rem;
  color: var(--text-light);
}

.summary-row.total {
  border-top: 2px solid var(--border);
  margin-top: 8px;
  padding-top: 12px;
  font-weight: 800;
  font-size: 1.1rem;
  color: var(--text);
}

/* ---------- Buttons & Alerts ---------- */
.submit-btn {
  width: 100%;
  background: var(--primary);
  color: #fff;
  padding: 16px;
  border-radius: var(--radius-sm);
  font-size: 1.05rem;
  font-weight: 700;
  border: none;
  cursor: pointer;
  transition: all 0.25s ease;
  display: flex;
  align-items: center;
  justify-content: center;
  gap: 10px;
}

.submit-btn:hover { background: var(--primary-dark); }

.submit-btn:disabled { opacity: 0.6; cursor: not-allowed; }

.spinner {
  width: 18px;
  height: 18px;
  border: 2px solid rgba(255,255,255,0.3);
  border-top-color: #fff;
  border-radius: 50%;
  animation: spin 0.8s linear infinite;
  display: none;
}

@keyframes spin { to { transform: rotate(360deg); } }

.secure-note {
  text-align: center;
  font-size: 0.8rem;
  color: var(--text-light);
  margin-top: 14px;
}

.alert {
  display: none;
  align-items: center;
  gap: 10px;
  padding: 14px 18px;
  border-radius: var(--radius-sm);
  margin-bottom: 20px;
  font-size: 0.92rem;
}

.alert.error {
  background: #fef2f2;
  color: #b91c1c;
  border: 1px solid #fecaca;
}

.alert.success {
  background: #f0fdf4;
  color: #15803d;
  border: 1px solid #bbf7d0;
}

.order-saved-banner {
  display: none;
  align-items: center;
  gap: 10px;
  padding: 14px 18px;
  background: #f0fdf4;
  color: #15803d;
  border: 1px solid #bbf7d0;
  border-radius: var(--radius-sm);
  margin-bottom: 20px;
  font-size: 0.95rem;
  font-weight: 600;
}

.order-saved-banner.visible { display: flex; }

/* ---------- Footer ---------- */
.footer {
  background: var(--surface);
  border-top: 1px solid var(--border);
  padding: 60px 0 28px;
}

.footer-grid {
  display: grid;
  grid-template-columns: 2fr 1fr 1fr 1fr;
  gap: 40px;
  margin-bottom: 40px;
}

.footer-brand p {
  font-size: 0.92rem;
  color: var(--text-light);
  margin-top: 12px;
  line-height: 1.6;
}

.footer h4 {
  font-size: 0.9rem;
  font-weight: 700;
  margin-bottom: 16px;
  text-transform: uppercase;
  letter-spacing: 0.5px;
}

.footer a {
  display: block;
  color: var(--text-light);
  text-decoration: none;
  font-size: 0.9rem;
  padding: 5px 0;
  transition: color 0.2s;
}

.footer a:hover { color: var(--primary); }

.footer-bottom {
  text-align: center;
  font-size: 0.85rem;
  color: var(--text-light);
  padding-top: 24px;
  border-top: 1px solid var(--border);
}

/* ---------- Page Headers ---------- */
.page-header {
  background: linear-gradient(180deg, #f0f9ff 0%, var(--bg) 100%);
  padding: 80px 0 40px;
  text-align: center;
}

.page-header h1 {
  font-size: 2.4rem;
  font-weight: 800;
  letter-spacing: -1px;
  margin-bottom: 8px;
}

.page-header p {
  color: var(--text-light);
  font-size: 1.05rem;
}

.page-content {
  padding: 60px 0;
  max-width: 800px;
  margin: 0 auto;
}

.page-content h2 {
  font-size: 1.3rem;
  font-weight: 700;
  margin: 32px 0 12px;
}

.page-content p,
.page-content li {
  color: var(--text-light);
  font-size: 0.98rem;
  line-height: 1.7;
  margin-bottom: 10px;
}

.page-content ul { margin-left: 20px; margin-bottom: 16px; }

.page-content a { color: var(--primary); }

/* ---------- Contact Page ---------- */
.contact-grid {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 48px;
  align-items: start;
}

.contact-info h3 { font-size: 1.2rem; margin-bottom: 12px; }

.contact-item {
  display: flex;
  gap: 14px;
  padding: 14px 0;
  border-bottom: 1px solid var(--border);
}

.contact-icon { font-size: 1.4rem; }

/* ---------- Responsive ---------- */
@media (max-width: 900px) {
  .hero-grid,
  .desc-grid,
  .checkout-grid,
  .contact-grid {
    grid-template-columns: 1fr;
  }
  .benefits-grid,
  .reviews-grid,
  .gallery-grid {
    grid-template-columns: 1fr;
  }
  .trust-grid { grid-template-columns: repeat(2, 1fr); }
  .footer-grid { grid-template-columns: 1fr 1fr; }
  .hero h1 { font-size: 2.2rem; }
  .checkout-product { position: static; }
}

@media (max-width: 600px) {
  .form-row,
  .form-row.three { grid-template-columns: 1fr; }
  .trust-grid { grid-template-columns: 1fr 1fr; }
  .footer-grid { grid-template-columns: 1fr; }
  .hero { padding: 48px 0 36px; }
  .benefits, .description, .gallery, .reviews, .faq, .checkout-section { padding: 48px 0; }
}