/* PAWBILT - Professional B2B Smart Pet Products Manufacturer
   Following high-end industrial independent site standards
   Pure CSS, relative paths, lightweight, semantic
*/

:root {
  --primary: #0f172a;
  --primary-light: #1e293b;
  --accent: #f97316;
  --accent-hover: #ea580c;
  --accent-light: #fff7ed;
  --text: #1e293b;
  --text-muted: #64748b;
  --bg: #ffffff;
  --bg-alt: #f8fafc;
  --border: #e2e8f0;
  --success: #10b981;
  --radius: 8px;
  --radius-lg: 16px;
  --shadow: 0 4px 6px -1px rgb(0 0 0 / 0.07), 0 2px 4px -2px rgb(0 0 0 / 0.05);
  --shadow-lg: 0 20px 25px -5px rgb(0 0 0 / 0.08), 0 8px 10px -6px rgb(0 0 0 / 0.05);
  --font: -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto, "Helvetica Neue", Arial, sans-serif;
  --max: 1200px;
}

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

html { scroll-behavior: smooth; font-size: 16px; }

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

img { max-width: 100%; height: auto; display: block; }
a { color: inherit; text-decoration: none; }
ul { list-style: none; }
button, .btn { cursor: pointer; border: none; font-family: inherit; }

.container {
  width: 100%;
  max-width: var(--max);
  margin: 0 auto;
  padding: 0 1.25rem;
}

/* ========== HEADER ========== */
.top-bar {
  background: var(--primary);
  color: #94a3b8;
  font-size: 0.8125rem;
  padding: 0.5rem 0;
  text-align: center;
}

.header {
  background: #fff;
  border-bottom: 1px solid var(--border);
  position: sticky;
  top: 0;
  z-index: 100;
  box-shadow: var(--shadow);
}

.header-inner {
  display: flex;
  align-items: center;
  justify-content: space-between;
  height: 72px;
}

.logo img {
  height: 36px;
  width: auto;
}

.nav {
  display: flex;
  align-items: center;
  gap: 2rem;
}

.nav > a, .nav-item > a {
  font-weight: 500;
  font-size: 0.9375rem;
  color: var(--text);
  transition: color 0.2s;
}

.nav > a:hover, .nav-item > a:hover,
.nav > a.active { color: var(--accent); }

.nav-item { position: relative; }

.mega {
  position: absolute;
  top: 100%;
  left: 50%;
  transform: translateX(-50%);
  background: #fff;
  border: 1px solid var(--border);
  border-radius: var(--radius-lg);
  box-shadow: var(--shadow-lg);
  padding: 1.5rem;
  min-width: 520px;
  display: none;
  grid-template-columns: 1fr 1fr;
  gap: 1rem;
  margin-top: 0.75rem;
}

.nav-item:hover .mega { display: grid; }

.mega a {
  display: flex;
  gap: 0.75rem;
  padding: 0.75rem;
  border-radius: var(--radius);
  transition: background 0.15s;
}

.mega a:hover { background: var(--bg-alt); }

.mega img {
  width: 56px;
  height: 56px;
  object-fit: cover;
  border-radius: 6px;
}

.mega-title { font-weight: 600; font-size: 0.875rem; }
.mega-desc { font-size: 0.75rem; color: var(--text-muted); }

.btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: 0.5rem;
  padding: 0.75rem 1.5rem;
  font-weight: 600;
  font-size: 0.9375rem;
  border-radius: 9999px;
  transition: all 0.2s;
}

.btn-primary {
  background: var(--accent);
  color: #fff;
}

.btn-primary:hover {
  background: var(--accent-hover);
  transform: translateY(-1px);
  box-shadow: 0 4px 12px rgb(249 115 22 / 0.35);
}

.btn-outline {
  background: transparent;
  color: #fff;
  border: 2px solid rgba(255,255,255,0.7);
}

.btn-outline:hover {
  background: #fff;
  color: var(--primary);
  border-color: #fff;
}

.btn-white {
  background: #fff;
  color: var(--primary);
}

.btn-white:hover {
  background: var(--accent-light);
  color: var(--accent);
}

/* ========== HERO ========== */
.hero {
  position: relative;
  background: linear-gradient(135deg, #0f172a 0%, #1e3a5f 60%, #0f172a 100%);
  color: #fff;
  overflow: hidden;
  min-height: 560px;
  display: flex;
  align-items: center;
}

.hero::before {
  content: "";
  position: absolute;
  inset: 0;
  background: url("../images/factory.jpg") center/cover no-repeat;
  opacity: 0.25;
}

.hero-content {
  position: relative;
  z-index: 2;
  max-width: 640px;
  padding: 4rem 0;
}

.hero-badge {
  display: inline-block;
  background: rgba(249, 115, 22, 0.15);
  color: #fdba74;
  font-size: 0.8125rem;
  font-weight: 600;
  padding: 0.35rem 0.85rem;
  border-radius: 9999px;
  margin-bottom: 1.25rem;
  letter-spacing: 0.02em;
}

.hero h1 {
  font-size: clamp(2rem, 4.5vw, 3rem);
  font-weight: 800;
  line-height: 1.15;
  margin-bottom: 1rem;
  letter-spacing: -0.02em;
}

.hero-sub {
  font-size: 1.125rem;
  color: #cbd5e1;
  margin-bottom: 1.75rem;
  max-width: 520px;
}

.hero-stats {
  display: flex;
  flex-wrap: wrap;
  gap: 1.5rem;
  margin-bottom: 2rem;
  font-size: 0.875rem;
  color: #94a3b8;
}

.hero-stats strong {
  color: #fff;
  font-weight: 700;
}

.hero-cta {
  display: flex;
  flex-wrap: wrap;
  gap: 0.75rem;
}

.hero-visual {
  position: absolute;
  right: 0;
  bottom: 0;
  width: 48%;
  max-width: 560px;
  z-index: 1;
  opacity: 0.95;
}

.hero-visual img {
  width: 100%;
  filter: drop-shadow(0 20px 40px rgba(0,0,0,0.3));
}

/* ========== SECTION COMMON ========== */
section {
  padding: 4.5rem 0;
}

.section-label {
  font-size: 0.8125rem;
  font-weight: 600;
  text-transform: uppercase;
  letter-spacing: 0.08em;
  color: var(--accent);
  margin-bottom: 0.5rem;
}

.section-title {
  font-size: clamp(1.75rem, 3vw, 2.25rem);
  font-weight: 800;
  line-height: 1.2;
  margin-bottom: 1rem;
  letter-spacing: -0.02em;
}

.section-desc {
  font-size: 1.0625rem;
  color: var(--text-muted);
  max-width: 640px;
  margin-bottom: 2.5rem;
}

.bg-alt { background: var(--bg-alt); }

/* ========== VALUE PROPS ========== */
.value-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(260px, 1fr));
  gap: 1.5rem;
}

.value-card {
  background: #fff;
  border: 1px solid var(--border);
  border-radius: var(--radius-lg);
  padding: 1.75rem;
  transition: box-shadow 0.2s, transform 0.2s;
}

.value-card:hover {
  box-shadow: var(--shadow-lg);
  transform: translateY(-2px);
}

.value-icon {
  width: 48px;
  height: 48px;
  background: var(--accent-light);
  color: var(--accent);
  border-radius: 12px;
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 1.5rem;
  margin-bottom: 1rem;
}

.value-card h3 {
  font-size: 1.125rem;
  font-weight: 700;
  margin-bottom: 0.5rem;
}

.value-card p {
  font-size: 0.9375rem;
  color: var(--text-muted);
}

/* ========== PRODUCTS ========== */
.product-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(300px, 1fr));
  gap: 1.75rem;
}

.product-card {
  background: #fff;
  border: 1px solid var(--border);
  border-radius: var(--radius-lg);
  overflow: hidden;
  transition: box-shadow 0.25s, transform 0.25s;
}

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

.product-img {
  aspect-ratio: 4/3;
  background: var(--bg-alt);
  overflow: hidden;
}

.product-img img {
  width: 100%;
  height: 100%;
  object-fit: cover;
  transition: transform 0.4s;
}

.product-card:hover .product-img img {
  transform: scale(1.04);
}

.product-body {
  padding: 1.5rem;
}

.product-body h3 {
  font-size: 1.1875rem;
  font-weight: 700;
  margin-bottom: 0.5rem;
}

.product-body p {
  font-size: 0.9375rem;
  color: var(--text-muted);
  margin-bottom: 1.25rem;
}

.product-tags {
  display: flex;
  flex-wrap: wrap;
  gap: 0.4rem;
  margin-bottom: 1.25rem;
}

.tag {
  font-size: 0.75rem;
  font-weight: 500;
  background: var(--bg-alt);
  color: var(--text-muted);
  padding: 0.25rem 0.6rem;
  border-radius: 9999px;
}

/* ========== TRUST / STATS ========== */
.stats-row {
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  gap: 1.5rem;
  text-align: center;
}

.stat-item strong {
  display: block;
  font-size: 2.25rem;
  font-weight: 800;
  color: var(--accent);
  line-height: 1.1;
  margin-bottom: 0.25rem;
}

.stat-item span {
  font-size: 0.9375rem;
  color: var(--text-muted);
}

/* ========== WHY US ========== */
.why-grid {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 3rem;
  align-items: center;
}

.why-list {
  display: flex;
  flex-direction: column;
  gap: 1.25rem;
}

.why-item {
  display: flex;
  gap: 1rem;
}

.why-num {
  flex-shrink: 0;
  width: 36px;
  height: 36px;
  background: var(--accent);
  color: #fff;
  font-weight: 700;
  font-size: 0.875rem;
  border-radius: 50%;
  display: flex;
  align-items: center;
  justify-content: center;
}

.why-item h4 {
  font-size: 1.0625rem;
  font-weight: 700;
  margin-bottom: 0.25rem;
}

.why-item p {
  font-size: 0.9375rem;
  color: var(--text-muted);
}

.why-img {
  border-radius: var(--radius-lg);
  overflow: hidden;
  box-shadow: var(--shadow-lg);
}

/* ========== PROCESS ========== */
.process-steps {
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  gap: 1.5rem;
  counter-reset: step;
}

.process-step {
  text-align: center;
  position: relative;
}

.process-step::before {
  counter-increment: step;
  content: counter(step);
  display: flex;
  align-items: center;
  justify-content: center;
  width: 48px;
  height: 48px;
  background: var(--accent);
  color: #fff;
  font-weight: 800;
  font-size: 1.25rem;
  border-radius: 50%;
  margin: 0 auto 1rem;
}

.process-step h4 {
  font-size: 1.0625rem;
  font-weight: 700;
  margin-bottom: 0.35rem;
}

.process-step p {
  font-size: 0.875rem;
  color: var(--text-muted);
}

/* ========== CTA BANNER ========== */
.cta-banner {
  background: linear-gradient(135deg, var(--primary) 0%, #1e3a5f 100%);
  color: #fff;
  border-radius: var(--radius-lg);
  padding: 3rem;
  text-align: center;
  position: relative;
  overflow: hidden;
}

.cta-banner h2 {
  font-size: 1.75rem;
  font-weight: 800;
  margin-bottom: 0.75rem;
}

.cta-banner p {
  color: #cbd5e1;
  margin-bottom: 1.75rem;
  max-width: 480px;
  margin-left: auto;
  margin-right: auto;
}

.cta-actions {
  display: flex;
  flex-wrap: wrap;
  gap: 0.75rem;
  justify-content: center;
}

/* ========== FOOTER ========== */
.footer {
  background: var(--primary);
  color: #94a3b8;
  padding: 4rem 0 2rem;
}

.footer-grid {
  display: grid;
  grid-template-columns: 2fr 1fr 1fr 1.5fr;
  gap: 2.5rem;
  margin-bottom: 3rem;
}

.footer-brand img {
  height: 32px;
  margin-bottom: 1rem;
  filter: brightness(0) invert(1);
}

.footer-brand p {
  font-size: 0.9375rem;
  line-height: 1.6;
  max-width: 280px;
}

.footer h4 {
  color: #fff;
  font-size: 0.9375rem;
  font-weight: 700;
  margin-bottom: 1rem;
}

.footer ul li {
  margin-bottom: 0.5rem;
}

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

.footer-contact p {
  font-size: 0.9375rem;
  margin-bottom: 0.5rem;
}

.footer-bottom {
  border-top: 1px solid #1e293b;
  padding-top: 1.5rem;
  display: flex;
  justify-content: space-between;
  align-items: center;
  font-size: 0.8125rem;
}

/* WhatsApp Floating */
.wa-float {
  position: fixed;
  bottom: 1.5rem;
  right: 1.5rem;
  z-index: 99;
  width: 56px;
  height: 56px;
  background: #25d366;
  border-radius: 50%;
  display: flex;
  align-items: center;
  justify-content: center;
  box-shadow: 0 4px 14px rgba(37, 211, 102, 0.4);
  transition: transform 0.2s;
}

.wa-float:hover { transform: scale(1.08); }

.wa-float svg { width: 28px; height: 28px; fill: #fff; }

/* ========== RESPONSIVE ========== */
@media (max-width: 960px) {
  .nav { display: none; }
  .hero-visual { display: none; }
  .stats-row { grid-template-columns: repeat(2, 1fr); }
  .why-grid { grid-template-columns: 1fr; }
  .process-steps { grid-template-columns: repeat(2, 1fr); }
  .footer-grid { grid-template-columns: 1fr 1fr; }
}

@media (max-width: 600px) {
  .hero { min-height: auto; }
  .hero-content { padding: 3rem 0; }
  .stats-row { grid-template-columns: 1fr 1fr; gap: 1rem; }
  .process-steps { grid-template-columns: 1fr; }
  .footer-grid { grid-template-columns: 1fr; }
  .footer-bottom { flex-direction: column; gap: 0.75rem; text-align: center; }
}

/* ========== PRODUCT DETAIL PAGE extras ========== */
.breadcrumb {
  font-size: 0.875rem;
  color: var(--text-muted);
  padding: 1.25rem 0;
}

.breadcrumb a:hover { color: var(--accent); }

.pd-hero {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 3rem;
  align-items: start;
  padding: 2rem 0 4rem;
}

.pd-gallery {
  background: var(--bg-alt);
  border-radius: var(--radius-lg);
  overflow: hidden;
  aspect-ratio: 1;
}

.pd-gallery img {
  width: 100%;
  height: 100%;
  object-fit: contain;
}

.pd-info h1 {
  font-size: 1.875rem;
  font-weight: 800;
  margin-bottom: 0.75rem;
}

.pd-info .lead {
  font-size: 1.0625rem;
  color: var(--text-muted);
  margin-bottom: 1.5rem;
}

.feature-list {
  margin: 1.5rem 0;
}

.feature-list li {
  display: flex;
  gap: 0.75rem;
  padding: 0.6rem 0;
  border-bottom: 1px solid var(--border);
  font-size: 0.9375rem;
}

.feature-list li::before {
  content: "✓";
  color: var(--success);
  font-weight: 700;
  flex-shrink: 0;
}

.pd-cta {
  display: flex;
  flex-wrap: wrap;
  gap: 0.75rem;
  margin-top: 1.5rem;
}

.spec-table {
  width: 100%;
  border-collapse: collapse;
  font-size: 0.9375rem;
}

.spec-table th,
.spec-table td {
  text-align: left;
  padding: 0.75rem 1rem;
  border-bottom: 1px solid var(--border);
}

.spec-table th {
  background: var(--bg-alt);
  font-weight: 600;
  width: 40%;
}

.faq-list {
  max-width: 720px;
  margin: 0 auto;
}

.faq-item {
  border-bottom: 1px solid var(--border);
  padding: 1.25rem 0;
}

.faq-item h4 {
  font-size: 1.0625rem;
  font-weight: 600;
  margin-bottom: 0.5rem;
}

.faq-item p {
  font-size: 0.9375rem;
  color: var(--text-muted);
}

@media (max-width: 800px) {
  .pd-hero { grid-template-columns: 1fr; }
}

/* ========== MOBILE NAV ========== */
.menu-toggle {
  display: none;
  background: none;
  border: none;
  width: 40px;
  height: 40px;
  padding: 8px;
  cursor: pointer;
}

.menu-toggle span {
  display: block;
  width: 22px;
  height: 2px;
  background: var(--primary);
  margin: 5px 0;
  transition: 0.25s;
  border-radius: 1px;
}

.mobile-nav {
  display: none;
  position: fixed;
  top: 0;
  left: 0;
  right: 0;
  bottom: 0;
  background: #fff;
  z-index: 200;
  padding: 1.5rem;
  overflow-y: auto;
  flex-direction: column;
}

.mobile-nav.open { display: flex; }

.mobile-nav-header {
  display: flex;
  justify-content: space-between;
  align-items: center;
  margin-bottom: 2rem;
}

.mobile-nav a {
  display: block;
  padding: 1rem 0;
  font-size: 1.125rem;
  font-weight: 600;
  border-bottom: 1px solid var(--border);
}

.mobile-nav .btn { margin-top: 1.5rem; text-align: center; }

@media (max-width: 960px) {
  .menu-toggle { display: block; }
  .nav { display: none; }
  .header .btn-primary { display: none; }
}

/* ========== EXTRA UTILITIES ========== */
.text-center { text-align: center; }
.mt-2 { margin-top: 2rem; }
.mb-2 { margin-bottom: 2rem; }

.two-col {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 2.5rem;
  align-items: start;
}

@media (max-width: 800px) {
  .two-col { grid-template-columns: 1fr; }
}

.list-check li {
  position: relative;
  padding-left: 1.5rem;
  margin-bottom: 0.6rem;
  font-size: 0.975rem;
  color: var(--text-muted);
}

.list-check li::before {
  content: "✓";
  position: absolute;
  left: 0;
  color: var(--success);
  font-weight: 700;
}

.card-img {
  border-radius: var(--radius-lg);
  overflow: hidden;
  box-shadow: var(--shadow);
}

.card-img img { width: 100%; }

/* Solutions / Process timeline */
.timeline {
  position: relative;
  padding-left: 2rem;
  border-left: 3px solid var(--accent);
}

.timeline-item {
  position: relative;
  margin-bottom: 2rem;
  padding-left: 1.5rem;
}

.timeline-item::before {
  content: "";
  position: absolute;
  left: -2.4rem;
  top: 0.35rem;
  width: 14px;
  height: 14px;
  background: var(--accent);
  border-radius: 50%;
  border: 3px solid #fff;
  box-shadow: 0 0 0 2px var(--accent);
}

.timeline-item h4 {
  font-size: 1.0625rem;
  font-weight: 700;
  margin-bottom: 0.35rem;
}

.timeline-item p {
  font-size: 0.9375rem;
  color: var(--text-muted);
}

/* Knowledge cards */
.knowledge-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(280px, 1fr));
  gap: 1.5rem;
}

.knowledge-card {
  background: #fff;
  border: 1px solid var(--border);
  border-radius: var(--radius-lg);
  padding: 1.5rem;
  transition: box-shadow 0.2s;
}

.knowledge-card:hover { box-shadow: var(--shadow-lg); }

.knowledge-card h3 {
  font-size: 1.125rem;
  font-weight: 700;
  margin-bottom: 0.5rem;
}

.knowledge-card p {
  font-size: 0.9375rem;
  color: var(--text-muted);
  margin-bottom: 1rem;
}

.knowledge-card a {
  font-size: 0.875rem;
  font-weight: 600;
  color: var(--accent);
}

.knowledge-card a:hover { text-decoration: underline; }