/* ============================================================
   PACKORA Packaging Co., Ltd. - Corporate Website Stylesheet
   ============================================================ */

/* --- Reset & Base --- */
*, *::before, *::after {
  margin: 0;
  padding: 0;
  box-sizing: border-box;
}

:root {
  --clr-primary: #1a3a5c;
  --clr-primary-light: #2a5a8c;
  --clr-accent: #e8a838;
  --clr-accent-hover: #d4952a;
  --clr-dark: #0f1e2e;
  --clr-text: #2d3748;
  --clr-text-light: #5a6a7a;
  --clr-bg: #ffffff;
  --clr-bg-alt: #f7f9fc;
  --clr-bg-card: #ffffff;
  --clr-border: #e2e8f0;
  --clr-success: #2f855a;
  --max-width: 1200px;
  --header-h: 76px;
  --radius: 8px;
  --radius-sm: 4px;
  --shadow-sm: 0 1px 3px rgba(0,0,0,0.08);
  --shadow-md: 0 4px 16px rgba(0,0,0,0.10);
  --shadow-lg: 0 8px 32px rgba(0,0,0,0.12);
  --font-sans: 'Inter', -apple-system, BlinkMacSystemFont, 'Segoe UI', Roboto, Helvetica, Arial, sans-serif;
}

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

body {
  font-family: var(--font-sans);
  color: var(--clr-text);
  background: var(--clr-bg);
  line-height: 1.6;
  -webkit-font-smoothing: antialiased;
  padding-top: var(--header-h);
}

img { max-width: 100%; height: auto; display: block; }

a {
  color: var(--clr-primary-light);
  text-decoration: none;
  transition: color 0.2s;
}
a:hover { color: var(--clr-accent); }

.container {
  width: 100%;
  max-width: var(--max-width);
  margin: 0 auto;
  padding: 0 24px;
}

/* --- Header / Navigation --- */
.site-header {
  position: fixed;
  top: 0; left: 0; right: 0;
  z-index: 1000;
  background: rgba(255,255,255,0.97);
  backdrop-filter: blur(8px);
  border-bottom: 1px solid var(--clr-border);
  height: var(--header-h);
}

.header-inner {
  display: flex;
  align-items: center;
  justify-content: space-between;
  height: 100%;
  max-width: var(--max-width);
  margin: 0 auto;
  padding: 0 24px;
}

.logo {
  display: flex;
  align-items: center;
  gap: 10px;
  font-weight: 700;
  font-size: 1.35rem;
  color: var(--clr-primary);
}
.logo svg { width: 36px; height: 36px; }
.logo .logo-sub {
  font-size: 0.7rem;
  font-weight: 400;
  color: var(--clr-text-light);
  display: block;
  line-height: 1.2;
}

.nav-links {
  display: flex;
  align-items: center;
  gap: 32px;
  list-style: none;
}

.nav-links a {
  font-size: 0.88rem;
  font-weight: 500;
  color: var(--clr-text);
  position: relative;
  padding: 4px 0;
}
.nav-links a::after {
  content: '';
  position: absolute;
  bottom: -2px; left: 0;
  width: 0; height: 2px;
  background: var(--clr-accent);
  transition: width 0.25s;
}
.nav-links a:hover::after,
.nav-links a.active::after { width: 100%; }
.nav-links a.active { color: var(--clr-primary); }

.nav-cta {
  background: var(--clr-accent);
  color: #fff !important;
  padding: 8px 20px !important;
  border-radius: var(--radius-sm);
  font-weight: 600 !important;
}
.nav-cta::after { display: none !important; }
.nav-cta:hover { background: var(--clr-accent-hover) !important; }

.mobile-toggle {
  display: none;
  flex-direction: column;
  gap: 5px;
  cursor: pointer;
  background: none;
  border: none;
  padding: 4px;
}
.mobile-toggle span {
  display: block;
  width: 26px; height: 2px;
  background: var(--clr-primary);
  border-radius: 2px;
  transition: 0.3s;
}

/* --- Hero Section --- */
.hero {
  min-height: calc(100vh - var(--header-h));
  display: flex;
  align-items: center;
  position: relative;
  background:
    radial-gradient(ellipse 90% 70% at 78% 38%, rgba(232,168,56,0.12) 0%, transparent 55%),
    linear-gradient(135deg, var(--clr-primary) 0%, #1e4d78 55%, #123a5e 100%);
  overflow: hidden;
}

.hero::before {
  content: '';
  position: absolute;
  inset: 0;
  background-image:
    repeating-linear-gradient(0deg, rgba(255,255,255,0.035) 0 1px, transparent 1px 90px),
    repeating-linear-gradient(90deg, rgba(255,255,255,0.035) 0 1px, transparent 1px 90px);
  -webkit-mask-image: radial-gradient(ellipse 70% 70% at 75% 45%, #000 30%, transparent 75%);
  mask-image: radial-gradient(ellipse 70% 70% at 75% 45%, #000 30%, transparent 75%);
  pointer-events: none;
  z-index: 0;
}

.hero-grid {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 60px;
  align-items: center;
  width: 100%;
  position: relative;
  z-index: 1;
}

.hero-content { padding: 80px 0; }

.hero-badge {
  display: inline-block;
  background: rgba(232,168,56,0.15);
  color: var(--clr-accent);
  font-size: 0.78rem;
  font-weight: 600;
  letter-spacing: 0.08em;
  text-transform: uppercase;
  padding: 6px 16px;
  border-radius: 20px;
  margin-bottom: 20px;
  border: 1px solid rgba(232,168,56,0.25);
}

.hero h1 {
  font-size: 3.2rem;
  font-weight: 700;
  color: #ffffff;
  line-height: 1.15;
  margin-bottom: 8px;
}

.hero h2 {
  font-size: 1.15rem;
  font-weight: 400;
  color: rgba(255,255,255,0.8);
  margin-bottom: 24px;
  letter-spacing: 0.02em;
}

.hero p {
  font-size: 1.05rem;
  color: rgba(255,255,255,0.7);
  max-width: 520px;
  margin-bottom: 36px;
  line-height: 1.7;
}

.hero-actions {
  display: flex;
  gap: 16px;
  flex-wrap: wrap;
}

.btn {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  font-family: var(--font-sans);
  font-size: 0.92rem;
  font-weight: 600;
  padding: 14px 32px;
  border-radius: var(--radius-sm);
  cursor: pointer;
  border: none;
  transition: all 0.25s;
  text-decoration: none;
}

.btn-primary {
  background: var(--clr-accent);
  color: #fff;
}
.btn-primary:hover {
  background: var(--clr-accent-hover);
  color: #fff;
  transform: translateY(-1px);
  box-shadow: 0 4px 12px rgba(232,168,56,0.35);
}

.btn-outline {
  background: transparent;
  color: #fff;
  border: 2px solid rgba(255,255,255,0.35);
}
.btn-outline:hover {
  border-color: var(--clr-accent);
  color: var(--clr-accent);
  background: rgba(232,168,56,0.08);
}

.btn-secondary {
  background: var(--clr-primary);
  color: #fff;
}
.btn-secondary:hover {
  background: var(--clr-primary-light);
  color: #fff;
}

/* Hero visual */
.hero-visual {
  display: flex;
  align-items: center;
  justify-content: center;
  position: relative;
}

.hero-visual svg {
  width: 100%;
  max-width: 520px;
  height: auto;
  filter: drop-shadow(0 8px 32px rgba(0,0,0,0.2));
}

/* --- Section base --- */
section { padding: 88px 0; }

.section-title {
  text-align: center;
  margin-bottom: 56px;
}

.section-title h2 {
  font-size: 2rem;
  font-weight: 700;
  color: var(--clr-primary);
  margin-bottom: 12px;
}

.section-title p {
  color: var(--clr-text-light);
  font-size: 1rem;
  max-width: 600px;
  margin: 0 auto;
}

.section-subtitle {
  display: inline-block;
  font-size: 0.78rem;
  font-weight: 600;
  color: var(--clr-accent);
  text-transform: uppercase;
  letter-spacing: 0.1em;
  margin-bottom: 8px;
}

/* --- Products Section --- */
.products-section { background: var(--clr-bg-alt); }

.product-grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 32px;
}

.product-card {
  background: var(--clr-bg-card);
  border-radius: var(--radius);
  overflow: hidden;
  box-shadow: var(--shadow-sm);
  border: 1px solid var(--clr-border);
  transition: transform 0.3s, box-shadow 0.3s;
  display: flex;
  flex-direction: column;
}
.product-card:hover {
  transform: translateY(-4px);
  box-shadow: var(--shadow-md);
}

.product-card-image {
  height: 220px;
  display: flex;
  align-items: center;
  justify-content: center;
  padding: 32px;
  background: linear-gradient(135deg, #f0f4f8 0%, #e8edf3 100%);
}

.product-card-image svg {
  width: 100%;
  height: 100%;
  max-width: 200px;
  object-fit: contain;
}

.product-card-body {
  padding: 28px;
  flex: 1;
  display: flex;
  flex-direction: column;
}

.product-card-body h3 {
  font-size: 1.15rem;
  font-weight: 600;
  color: var(--clr-primary);
  margin-bottom: 8px;
}

.product-card-body .product-tag {
  font-size: 0.75rem;
  color: var(--clr-accent);
  font-weight: 600;
  text-transform: uppercase;
  letter-spacing: 0.04em;
  margin-bottom: 12px;
}

.product-card-body p {
  font-size: 0.92rem;
  color: var(--clr-text-light);
  line-height: 1.65;
  margin-bottom: 16px;
  flex: 1;
}

.product-card-body ul {
  list-style: none;
  margin-bottom: 20px;
}

.product-card-body ul li {
  font-size: 0.85rem;
  color: var(--clr-text);
  padding: 4px 0 4px 20px;
  position: relative;
}
.product-card-body ul li::before {
  content: '';
  position: absolute;
  left: 0; top: 11px;
  width: 8px; height: 8px;
  border-radius: 50%;
  background: var(--clr-accent);
  opacity: 0.6;
}

.btn-link {
  color: var(--clr-primary-light);
  font-weight: 600;
  font-size: 0.88rem;
  display: inline-flex;
  align-items: center;
  gap: 6px;
  margin-top: auto;
}
.btn-link:hover { color: var(--clr-accent); }
.btn-link svg { transition: transform 0.2s; }
.btn-link:hover svg { transform: translateX(4px); }

/* --- Why Choose Us --- */
.features-grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 28px;
}

.feature-card {
  text-align: center;
  padding: 40px 28px;
  border: 1px solid var(--clr-border);
  border-radius: var(--radius);
  transition: box-shadow 0.25s;
}
.feature-card:hover { box-shadow: var(--shadow-sm); }

.feature-icon {
  width: 56px; height: 56px;
  margin: 0 auto 16px;
  border-radius: 50%;
  background: linear-gradient(135deg, rgba(26,58,92,0.08), rgba(42,90,108,0.08));
  display: flex;
  align-items: center;
  justify-content: center;
}

.feature-card h3 {
  font-size: 1rem;
  font-weight: 600;
  color: var(--clr-primary);
  margin-bottom: 8px;
}

.feature-card p {
  font-size: 0.88rem;
  color: var(--clr-text-light);
  line-height: 1.6;
}

/* --- Industries --- */
.industries-section { background: var(--clr-bg-alt); }

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

.industry-item {
  display: flex;
  align-items: center;
  gap: 14px;
  padding: 20px 24px;
  background: var(--clr-bg-card);
  border-radius: var(--radius);
  border: 1px solid var(--clr-border);
  transition: border-color 0.2s, box-shadow 0.2s;
}
.industry-item:hover {
  border-color: var(--clr-accent);
  box-shadow: var(--shadow-sm);
}

.industry-item svg { width: 28px; height: 28px; flex-shrink: 0; }
.industry-item span { font-size: 0.95rem; font-weight: 500; color: var(--clr-text); }

/* --- CTA Section --- */
.cta-section {
  background: linear-gradient(135deg, var(--clr-primary) 0%, #0f2a42 100%);
  text-align: center;
  padding: 80px 0;
}

.cta-section h2 {
  font-size: 2rem;
  font-weight: 700;
  color: #fff;
  margin-bottom: 12px;
}

.cta-section p {
  color: rgba(255,255,255,0.7);
  font-size: 1.05rem;
  margin-bottom: 32px;
}

.cta-section .btn-primary {
  font-size: 1rem;
  padding: 16px 40px;
}

/* --- Footer --- */
.site-footer {
  background: var(--clr-dark);
  color: rgba(255,255,255,0.65);
  padding: 60px 0 32px;
}

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

.footer-brand .logo { color: #fff; margin-bottom: 12px; }
.footer-brand .logo .logo-sub { color: rgba(255,255,255,0.5); }

.footer-brand p {
  font-size: 0.88rem;
  line-height: 1.7;
  max-width: 320px;
}

.footer-col h4 {
  color: #fff;
  font-size: 0.92rem;
  font-weight: 600;
  margin-bottom: 16px;
}

.footer-col ul { list-style: none; }
.footer-col ul li { margin-bottom: 8px; }
.footer-col ul li a {
  color: rgba(255,255,255,0.6);
  font-size: 0.85rem;
}
.footer-col ul li a:hover { color: var(--clr-accent); }

.footer-col .contact-item {
  display: flex;
  align-items: flex-start;
  gap: 10px;
  font-size: 0.85rem;
  margin-bottom: 10px;
}
.footer-col .contact-item svg { width: 16px; height: 16px; margin-top: 3px; flex-shrink: 0; }

.footer-bottom {
  border-top: 1px solid rgba(255,255,255,0.08);
  padding-top: 24px;
  display: flex;
  justify-content: space-between;
  align-items: center;
  font-size: 0.82rem;
}

/* ============================================================
   SUBPAGE STYLES
   ============================================================ */

/* --- Page Banner --- */
.page-banner {
  background: linear-gradient(135deg, var(--clr-primary) 0%, var(--clr-primary-light) 100%);
  padding: 80px 0 60px;
  text-align: center;
}

.page-banner h1 {
  font-size: 2.4rem;
  font-weight: 700;
  color: #fff;
  margin-bottom: 8px;
}

.page-banner p {
  color: rgba(255,255,255,0.7);
  font-size: 1.05rem;
  max-width: 600px;
  margin: 0 auto;
}

.breadcrumb {
  font-size: 0.82rem;
  color: rgba(255,255,255,0.5);
  margin-bottom: 16px;
}
.breadcrumb a { color: rgba(255,255,255,0.7); }
.breadcrumb a:hover { color: #fff; }

/* --- About Page --- */
.about-intro {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 60px;
  align-items: center;
}

.about-intro-image {
  border-radius: var(--radius);
  overflow: hidden;
  background: linear-gradient(135deg, #f0f4f8 0%, #e0e8f0 100%);
  min-height: 400px;
  display: flex;
  align-items: center;
  justify-content: center;
  padding: 40px;
}

.about-intro-image svg { width: 100%; max-width: 380px; }

.about-intro h2 {
  font-size: 1.6rem;
  color: var(--clr-primary);
  margin-bottom: 16px;
}

.about-intro p {
  font-size: 0.95rem;
  color: var(--clr-text-light);
  line-height: 1.8;
  margin-bottom: 16px;
}

.about-values {
  display: grid;
  grid-template-columns: repeat(2, 1fr);
  gap: 24px;
  margin-top: 32px;
}

.value-item {
  display: flex;
  gap: 16px;
  padding: 20px;
  border: 1px solid var(--clr-border);
  border-radius: var(--radius);
}

.value-item svg { width: 24px; height: 24px; flex-shrink: 0; margin-top: 2px; }

.value-item h4 {
  font-size: 0.95rem;
  font-weight: 600;
  color: var(--clr-primary);
  margin-bottom: 4px;
}

.value-item p { font-size: 0.85rem; margin-bottom: 0; }

/* --- Product Detail Page --- */
.product-detail-grid {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 60px;
  align-items: start;
}

.product-detail-visual {
  border-radius: var(--radius);
  overflow: hidden;
  background: linear-gradient(135deg, #f0f4f8 0%, #e8edf3 100%);
  min-height: 400px;
  display: flex;
  align-items: center;
  justify-content: center;
  padding: 60px 40px;
  position: sticky;
  top: calc(var(--header-h) + 40px);
}

.product-detail-visual svg { width: 100%; max-width: 340px; }

.product-detail-info h2 {
  font-size: 1.8rem;
  color: var(--clr-primary);
  margin-bottom: 8px;
}

.product-detail-info .product-subtitle {
  font-size: 0.85rem;
  color: var(--clr-accent);
  font-weight: 600;
  text-transform: uppercase;
  letter-spacing: 0.05em;
  margin-bottom: 16px;
}

.product-detail-info .product-desc {
  font-size: 0.95rem;
  color: var(--clr-text-light);
  line-height: 1.8;
  margin-bottom: 32px;
}

.spec-section { margin-bottom: 28px; }

.spec-section h3 {
  font-size: 1rem;
  font-weight: 600;
  color: var(--clr-primary);
  margin-bottom: 12px;
  padding-bottom: 8px;
  border-bottom: 2px solid var(--clr-border);
}

.spec-list {
  list-style: none;
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 8px;
}

.spec-list li {
  font-size: 0.88rem;
  color: var(--clr-text);
  padding: 8px 0 8px 24px;
  position: relative;
}
.spec-list li::before {
  content: '';
  position: absolute;
  left: 0; top: 14px;
  width: 10px; height: 2px;
  background: var(--clr-accent);
}

.feature-list-compact { list-style: none; }
.feature-list-compact li {
  font-size: 0.88rem;
  color: var(--clr-text);
  padding: 6px 0 6px 24px;
  position: relative;
}
.feature-list-compact li::before {
  content: '✓';
  position: absolute;
  left: 0;
  color: var(--clr-success);
  font-weight: 700;
}

/* --- Contact Page --- */
.contact-grid {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 60px;
}

.contact-info h2 {
  font-size: 1.5rem;
  color: var(--clr-primary);
  margin-bottom: 16px;
}

.contact-info > p {
  font-size: 0.95rem;
  color: var(--clr-text-light);
  margin-bottom: 32px;
}

.contact-detail { margin-bottom: 20px; }

.contact-detail h4 {
  font-size: 0.88rem;
  font-weight: 600;
  color: var(--clr-primary);
  margin-bottom: 4px;
  text-transform: uppercase;
  letter-spacing: 0.04em;
}

.contact-detail p {
  font-size: 0.92rem;
  color: var(--clr-text);
  line-height: 1.6;
}

.contact-form {
  padding: 32px;
  border: 1px solid var(--clr-border);
  border-radius: var(--radius);
  background: var(--clr-bg-alt);
}

.form-group { margin-bottom: 20px; }

.form-group label {
  display: block;
  font-size: 0.85rem;
  font-weight: 500;
  color: var(--clr-text);
  margin-bottom: 6px;
}

.form-group input,
.form-group textarea,
.form-group select {
  width: 100%;
  padding: 12px 16px;
  border: 1px solid var(--clr-border);
  border-radius: var(--radius-sm);
  font-family: var(--font-sans);
  font-size: 0.92rem;
  color: var(--clr-text);
  background: #fff;
  transition: border-color 0.2s;
}
.form-group input:focus,
.form-group textarea:focus,
.form-group select:focus {
  outline: none;
  border-color: var(--clr-primary-light);
  box-shadow: 0 0 0 3px rgba(26,58,92,0.08);
}

.form-group textarea { min-height: 120px; resize: vertical; }

/* --- Quality Control --- */
.qc-section { background: var(--clr-bg-alt); }
.qc-content { max-width: 720px; margin: 0 auto; text-align: center; }
.qc-content p { font-size: 1rem; color: var(--clr-text-light); line-height: 1.8; }

/* --- Supply Capability --- */
.capability-grid {
  display: grid;
  grid-template-columns: repeat(2, 1fr);
  gap: 24px;
}

.capability-card {
  padding: 28px;
  border: 1px solid var(--clr-border);
  border-radius: var(--radius);
  text-align: center;
}

.capability-card svg { width: 36px; height: 36px; margin-bottom: 12px; }

.capability-card h4 {
  font-size: 1rem;
  font-weight: 600;
  color: var(--clr-primary);
  margin-bottom: 6px;
}

.capability-card p { font-size: 0.85rem; color: var(--clr-text-light); }

/* --- Responsive --- */
@media (max-width: 1024px) {
  .hero-grid { grid-template-columns: 1fr; gap: 32px; }
  .hero-content { padding: 60px 0 0; text-align: center; }
  .hero p { margin: 0 auto 36px; }
  .hero-actions { justify-content: center; }
  .hero-visual { display: none; }
  .product-grid { grid-template-columns: repeat(2, 1fr); }
  .features-grid { grid-template-columns: repeat(2, 1fr); }
  .footer-grid { grid-template-columns: repeat(2, 1fr); }
  .about-intro { grid-template-columns: 1fr; }
  .product-detail-grid { grid-template-columns: 1fr; }
  .product-detail-visual { position: static; }
  .contact-grid { grid-template-columns: 1fr; }
}

@media (max-width: 768px) {
  :root { --header-h: 64px; }
  html { font-size: 15px; }
  .mobile-toggle { display: flex; }
  .nav-links {
    position: fixed;
    top: var(--header-h); left: 0; right: 0;
    background: rgba(255,255,255,0.98);
    backdrop-filter: blur(8px);
    flex-direction: column;
    padding: 24px;
    gap: 20px;
    border-bottom: 1px solid var(--clr-border);
    transform: translateY(-100%);
    opacity: 0;
    pointer-events: none;
    transition: 0.3s;
  }
  .nav-links.open {
    transform: translateY(0);
    opacity: 1;
    pointer-events: auto;
  }
  .hero h1 { font-size: 2.2rem; }
  section { padding: 64px 0; }
  .product-grid { grid-template-columns: 1fr; }
  .features-grid { grid-template-columns: 1fr; }
  .industries-grid { grid-template-columns: repeat(2, 1fr); }
  .about-values { grid-template-columns: 1fr; }
  .spec-list { grid-template-columns: 1fr; }
  .capability-grid { grid-template-columns: 1fr; }
  .footer-grid { grid-template-columns: 1fr; gap: 32px; }
  .footer-bottom { flex-direction: column; gap: 8px; text-align: center; }
}

@media (max-width: 480px) {
  .industries-grid { grid-template-columns: 1fr; }
  .hero-actions { flex-direction: column; align-items: center; }
  .hero h1 { font-size: 1.8rem; }
}



/* --- Language Switcher --- */
.lang-switch {
  display: flex;
  align-items: center;
  gap: 6px;
  font-size: 0.8rem;
  font-weight: 600;
  margin-left: 6px;
  padding: 5px 12px;
  border: 1px solid var(--clr-border);
  border-radius: 20px;
  background: var(--clr-bg-alt);
  white-space: nowrap;
  line-height: 1;
}
.lang-switch svg { color: var(--clr-primary-light); flex-shrink: 0; }
.lang-link {
  color: var(--clr-primary-light);
  padding: 3px 6px;
  border-radius: 12px;
  transition: all 0.2s;
}
.lang-link:hover {
  color: var(--clr-accent);
  background: rgba(232,168,56,0.10);
}
.lang-current {
  color: var(--clr-accent);
  padding: 3px 6px;
  border-radius: 12px;
  background: rgba(232,168,56,0.10);
}
.lang-divider { color: var(--clr-border); }

/* Footer language switch */
.footer-lang {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  font-size: 0.82rem;
  font-weight: 500;
}
.footer-lang .lang-link { color: var(--clr-accent); }
.footer-lang .lang-link:hover { text-decoration: underline; }
.footer-lang .lang-current { color: #fff; background: rgba(255,255,255,0.08); }

@media (max-width: 768px) {
  .lang-switch { align-self: flex-start; }
  .footer-bottom { gap: 12px; }
}