/* ===== Reset & Base ===== */
*, *::before, *::after { box-sizing: border-box; margin: 0; padding: 0; }
html { scroll-behavior: smooth; }
body {
  font-family: 'Noto Sans', -apple-system, BlinkMacSystemFont, 'Segoe UI', sans-serif;
  color: #1a2b3c;
  background: #ffffff;
  line-height: 1.6;
  -webkit-font-smoothing: antialiased;
}
img { max-width: 100%; display: block; }
a { text-decoration: none; color: inherit; }
ul { list-style: none; }

/* ===== Color Tokens ===== */
:root {
  --primary: #0e4d64;
  --primary-dark: #0a3a4c;
  --accent: #00b4d8;
  --accent-light: #90e0ef;
  --cta: #e67e22;
  --cta-hover: #d35400;
  --bg-light: #f4f8fa;
  --bg-dark: #0a2a38;
  --text: #1a2b3c;
  --text-light: #5a7a8c;
  --border: #d8e4ea;
  --white: #ffffff;
}

/* ===== Typography ===== */
h1, h2, h3, h4 {
  font-family: 'Playfair Display', Georgia, serif;
  font-weight: 700;
  line-height: 1.2;
  color: var(--primary);
}
h1 { font-size: clamp(2rem, 5vw, 3.2rem); }
h2 { font-size: clamp(1.6rem, 3.5vw, 2.4rem); margin-bottom: 1rem; }
h3 { font-size: 1.25rem; margin-bottom: 0.5rem; }
p { color: var(--text-light); margin-bottom: 1rem; }

/* ===== Layout ===== */
.container {
  max-width: 1200px;
  margin: 0 auto;
  padding: 0 24px;
}
section { padding: 80px 0; }
.section-label {
  display: inline-block;
  font-size: 0.8rem;
  font-weight: 600;
  letter-spacing: 2px;
  text-transform: uppercase;
  color: var(--accent);
  margin-bottom: 12px;
}

/* ===== Navigation ===== */
nav {
  position: fixed;
  top: 0;
  left: 0;
  right: 0;
  z-index: 1000;
  background: rgba(255,255,255,0.97);
  backdrop-filter: blur(10px);
  border-bottom: 1px solid var(--border);
  transition: all 0.3s ease;
}
.nav-inner {
  max-width: 1200px;
  margin: 0 auto;
  padding: 0 24px;
  display: flex;
  align-items: center;
  justify-content: space-between;
  height: 70px;
}
.logo {
  font-family: 'Playfair Display', serif;
  font-size: 1.3rem;
  font-weight: 800;
  color: var(--primary);
  display: flex;
  align-items: center;
  gap: 10px;
}
.logo-mark {
  width: 36px;
  height: 36px;
  background: linear-gradient(135deg, var(--primary), var(--accent));
  border-radius: 50%;
  display: flex;
  align-items: center;
  justify-content: center;
}
.logo-mark svg { width: 20px; height: 20px; fill: white; }
.nav-links {
  display: flex;
  gap: 28px;
  align-items: center;
}
.nav-links a {
  font-size: 0.85rem;
  font-weight: 500;
  color: var(--text);
  transition: color 0.2s;
}
.nav-links a:hover { color: var(--accent); }
.nav-cta {
  background: var(--primary);
  color: white !important;
  padding: 10px 22px;
  border-radius: 4px;
  font-weight: 600 !important;
  transition: background 0.2s;
}
.nav-cta:hover { background: var(--accent); }
.mobile-toggle {
  display: none;
  background: none;
  border: none;
  cursor: pointer;
  padding: 8px;
}
.mobile-toggle span {
  display: block;
  width: 24px;
  height: 2px;
  background: var(--primary);
  margin: 5px 0;
  transition: 0.3s;
}

/* ===== Hero ===== */
.hero {
  position: relative;
  min-height: 100vh;
  display: flex;
  align-items: center;
  padding-top: 70px;
  overflow: hidden;
}
.hero-bg {
  position: absolute;
  inset: 0;
  background: linear-gradient(135deg, rgba(10,58,76,0.72), rgba(14,77,100,0.45)), url('images/hero.svg') center/cover no-repeat;
  z-index: 0;
}
.hero-overlay {
  position: absolute;
  inset: 0;
  background: linear-gradient(135deg, rgba(10,42,56,0.92) 0%, rgba(14,77,100,0.75) 50%, rgba(14,77,100,0.6) 100%);
  z-index: 1;
}
.hero-content {
  position: relative;
  z-index: 2;
  max-width: 1200px;
  margin: 0 auto;
  padding: 0 24px;
  color: white;
}
.hero-badge {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  background: rgba(0,180,216,0.15);
  border: 1px solid rgba(0,180,216,0.4);
  padding: 8px 18px;
  border-radius: 30px;
  font-size: 0.85rem;
  font-weight: 500;
  color: var(--accent-light);
  margin-bottom: 24px;
}
.hero h1 {
  color: white;
  max-width: 700px;
  margin-bottom: 20px;
}
.hero h1 span { color: var(--accent-light); }
.hero-sub {
  font-size: 1.15rem;
  color: rgba(255,255,255,0.85);
  max-width: 600px;
  margin-bottom: 36px;
  line-height: 1.7;
}
.hero-cta {
  display: flex;
  gap: 16px;
  flex-wrap: wrap;
}
.btn-primary {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  background: var(--cta);
  color: white;
  padding: 14px 32px;
  border-radius: 4px;
  font-weight: 600;
  font-size: 1rem;
  transition: all 0.2s;
  border: none;
  cursor: pointer;
}
.btn-primary:hover { background: var(--cta-hover); transform: translateY(-2px); }
.btn-outline {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  background: transparent;
  color: white;
  padding: 14px 32px;
  border-radius: 4px;
  font-weight: 600;
  font-size: 1rem;
  border: 2px solid rgba(255,255,255,0.4);
  transition: all 0.2s;
  cursor: pointer;
}
.btn-outline:hover { border-color: white; background: rgba(255,255,255,0.1); }
.hero-stats {
  display: flex;
  gap: 48px;
  margin-top: 60px;
  flex-wrap: wrap;
}
.stat-item { border-left: 3px solid var(--accent); padding-left: 16px; }
.stat-number {
  font-family: 'Playfair Display', serif;
  font-size: 2.2rem;
  font-weight: 800;
  color: white;
}
.stat-label { font-size: 0.85rem; color: rgba(255,255,255,0.7); }

/* ===== Wave Divider ===== */
.wave-divider {
  position: relative;
  height: 60px;
  background: var(--white);
  margin-top: -60px;
  z-index: 3;
}
.wave-divider svg {
  position: absolute;
  bottom: 0;
  width: 100%;
  height: 60px;
}

/* ===== Products Section ===== */
.products { background: var(--bg-light); }
.products-header {
  text-align: center;
  max-width: 700px;
  margin: 0 auto 50px;
}
.products-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(280px, 1fr));
  gap: 24px;
}
.product-card {
  background: white;
  border-radius: 8px;
  overflow: hidden;
  box-shadow: 0 2px 12px rgba(14,77,100,0.08);
  transition: all 0.3s ease;
  border: 1px solid var(--border);
}
.product-card:hover {
  transform: translateY(-6px);
  box-shadow: 0 12px 32px rgba(14,77,100,0.15);
}
.product-img {
  height: 200px;
  overflow: hidden;
  background: var(--bg-light);
}
.product-img img {
  width: 100%;
  height: 100%;
  object-fit: cover;
  transition: transform 0.4s;
}
.product-card:hover .product-img img { transform: scale(1.05); }
.product-body { padding: 24px; }
.product-tag {
  display: inline-block;
  font-size: 0.75rem;
  font-weight: 600;
  color: var(--accent);
  background: rgba(0,180,216,0.1);
  padding: 4px 10px;
  border-radius: 3px;
  margin-bottom: 10px;
}
.product-body h3 { font-size: 1.15rem; margin-bottom: 8px; }
.product-body h3 a { color: inherit; transition: color 0.2s; }
.product-body h3 a:hover { color: var(--accent); }
.product-body p { font-size: 0.9rem; margin-bottom: 0; }
.product-specs {
  margin-top: 14px;
  padding-top: 14px;
  border-top: 1px solid var(--border);
  display: flex;
  gap: 16px;
  flex-wrap: wrap;
}
.spec-item { font-size: 0.8rem; color: var(--text-light); }
.spec-item strong { color: var(--primary); }

/* ===== Specifications Section ===== */
.specs { background: white; }
.specs-tabs {
  display: flex;
  gap: 12px;
  margin-bottom: 40px;
  flex-wrap: wrap;
  justify-content: center;
}
.spec-tab {
  padding: 12px 28px;
  border: 2px solid var(--border);
  border-radius: 4px;
  background: white;
  color: var(--text);
  font-weight: 600;
  font-size: 0.95rem;
  cursor: pointer;
  transition: all 0.2s;
}
.spec-tab.active {
  background: var(--primary);
  color: white;
  border-color: var(--primary);
}
.spec-tab:hover:not(.active) {
  border-color: var(--accent);
  color: var(--accent);
}
.spec-content { display: none; }
.spec-content.active { display: block; }
.spec-table {
  width: 100%;
  border-collapse: collapse;
  margin-top: 20px;
  background: white;
  border-radius: 8px;
  overflow: hidden;
  box-shadow: 0 2px 12px rgba(14,77,100,0.08);
}
.spec-table th {
  background: var(--primary);
  color: white;
  padding: 14px 16px;
  text-align: left;
  font-weight: 600;
  font-size: 0.9rem;
}
.spec-table td {
  padding: 12px 16px;
  border-bottom: 1px solid var(--border);
  font-size: 0.9rem;
  color: var(--text);
}
.spec-table tr:nth-child(even) { background: var(--bg-light); }
.spec-table tr:hover { background: rgba(0,180,216,0.05); }

/* ===== Applications Section ===== */
.applications { background: var(--bg-light); }
.app-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(250px, 1fr));
  gap: 24px;
  margin-top: 40px;
}
.app-card {
  background: white;
  padding: 32px 24px;
  border-radius: 8px;
  border: 1px solid var(--border);
  transition: all 0.3s;
}
.app-card:hover {
  transform: translateY(-4px);
  box-shadow: 0 8px 24px rgba(14,77,100,0.12);
}
.app-icon {
  width: 56px;
  height: 56px;
  background: linear-gradient(135deg, var(--primary), var(--accent));
  border-radius: 12px;
  display: flex;
  align-items: center;
  justify-content: center;
  margin-bottom: 20px;
}
.app-icon svg { width: 28px; height: 28px; fill: white; }
.app-card h3 { font-size: 1.1rem; margin-bottom: 10px; }
.app-card p { font-size: 0.88rem; margin-bottom: 0; }
.app-products {
  margin-top: 12px;
  display: flex;
  gap: 8px;
  flex-wrap: wrap;
}
.app-product-tag {
  font-size: 0.75rem;
  padding: 3px 10px;
  background: rgba(0,180,216,0.1);
  color: var(--accent);
  border-radius: 3px;
  font-weight: 500;
}

/* ===== Packaging Section ===== */
.packaging { background: white; }
.pack-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(280px, 1fr));
  gap: 32px;
  margin-top: 40px;
}
.pack-card {
  text-align: center;
  padding: 40px 24px;
  border: 2px solid var(--border);
  border-radius: 8px;
  transition: all 0.3s;
}
.pack-card:hover {
  border-color: var(--accent);
  transform: translateY(-4px);
}
.pack-icon {
  width: 80px;
  height: 80px;
  margin: 0 auto 20px;
  background: linear-gradient(135deg, var(--primary), var(--accent));
  border-radius: 50%;
  display: flex;
  align-items: center;
  justify-content: center;
}
.pack-icon svg { width: 40px; height: 40px; fill: white; }
.pack-card h3 { font-size: 1.2rem; margin-bottom: 12px; }
.pack-card p { font-size: 0.9rem; margin-bottom: 8px; }
.pack-detail {
  font-size: 0.85rem;
  color: var(--text-light);
  margin-top: 12px;
  padding-top: 12px;
  border-top: 1px solid var(--border);
}

/* ===== Certifications Section ===== */
.certifications { background: var(--bg-light); }
.cert-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(200px, 1fr));
  gap: 24px;
  margin-top: 40px;
}
.cert-card {
  background: white;
  padding: 32px 20px;
  border-radius: 8px;
  text-align: center;
  border: 1px solid var(--border);
  transition: all 0.3s;
}
.cert-card:hover {
  transform: translateY(-4px);
  box-shadow: 0 8px 24px rgba(14,77,100,0.12);
}
.cert-icon {
  width: 64px;
  height: 64px;
  margin: 0 auto 16px;
  background: linear-gradient(135deg, var(--primary), var(--accent));
  border-radius: 50%;
  display: flex;
  align-items: center;
  justify-content: center;
}
.cert-icon svg { width: 32px; height: 32px; fill: white; }
.cert-card h4 { font-size: 1rem; margin-bottom: 8px; font-family: 'Noto Sans', sans-serif; }
.cert-card p { font-size: 0.82rem; margin-bottom: 0; }

/* ===== FAQ Section ===== */
.faq { background: white; }
.faq-list {
  max-width: 800px;
  margin: 40px auto 0;
}
.faq-item {
  border: 1px solid var(--border);
  border-radius: 8px;
  margin-bottom: 16px;
  overflow: hidden;
  transition: all 0.3s;
}
.faq-item:hover { border-color: var(--accent); }
.faq-question {
  padding: 20px 24px;
  cursor: pointer;
  display: flex;
  justify-content: space-between;
  align-items: center;
  font-weight: 600;
  font-size: 1rem;
  color: var(--primary);
  background: var(--bg-light);
}
.faq-question svg {
  width: 20px;
  height: 20px;
  fill: var(--accent);
  transition: transform 0.3s;
  flex-shrink: 0;
}
.faq-item.active .faq-question svg { transform: rotate(180deg); }
.faq-answer {
  max-height: 0;
  overflow: hidden;
  transition: max-height 0.3s ease;
}
.faq-item.active .faq-answer { max-height: 300px; }
.faq-answer-inner {
  padding: 20px 24px;
  font-size: 0.92rem;
  color: var(--text-light);
  line-height: 1.7;
}

/* ===== Why Us ===== */
.why-us { background: white; }
.why-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(250px, 1fr));
  gap: 32px;
  margin-top: 50px;
}
.why-item {
  text-align: center;
  padding: 32px 24px;
  border-radius: 8px;
  transition: all 0.3s;
}
.why-item:hover { background: var(--bg-light); }
.why-icon {
  width: 64px;
  height: 64px;
  margin: 0 auto 20px;
  background: linear-gradient(135deg, var(--primary), var(--accent));
  border-radius: 50%;
  display: flex;
  align-items: center;
  justify-content: center;
}
.why-icon svg { width: 28px; height: 28px; fill: white; }
.why-item h3 { font-size: 1.1rem; margin-bottom: 10px; }
.why-item p { font-size: 0.9rem; margin-bottom: 0; }

/* ===== About ===== */
.about { background: var(--bg-light); }
.about-grid {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 60px;
  align-items: center;
}
.about-content h2 { margin-bottom: 20px; }
.about-content p { margin-bottom: 16px; font-size: 0.95rem; }
.about-list {
  margin-top: 24px;
  display: flex;
  flex-direction: column;
  gap: 12px;
}
.about-list li {
  display: flex;
  align-items: flex-start;
  gap: 12px;
  font-size: 0.95rem;
  color: var(--text);
}
.about-list svg {
  width: 20px;
  height: 20px;
  fill: var(--accent);
  flex-shrink: 0;
  margin-top: 2px;
}
.about-image {
  border-radius: 8px;
  overflow: hidden;
  box-shadow: 0 8px 32px rgba(14,77,100,0.15);
}
.about-image img { width: 100%; height: 400px; object-fit: cover; }

/* ===== Contact ===== */
.contact { background: var(--bg-dark); color: white; }
.contact h2 { color: white; }
.contact-grid {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 60px;
  margin-top: 40px;
}
.contact-info h3 {
  color: white;
  font-size: 1.3rem;
  margin-bottom: 24px;
}
.contact-item {
  display: flex;
  gap: 16px;
  margin-bottom: 24px;
  align-items: flex-start;
}
.contact-icon {
  width: 44px;
  height: 44px;
  background: rgba(0,180,216,0.15);
  border-radius: 50%;
  display: flex;
  align-items: center;
  justify-content: center;
  flex-shrink: 0;
}
.contact-icon svg { width: 20px; height: 20px; fill: var(--accent); }
.contact-item h4 { color: white; font-size: 0.95rem; margin-bottom: 4px; font-family: 'Noto Sans', sans-serif; font-weight: 600; }
.contact-item p { color: rgba(255,255,255,0.7); font-size: 0.9rem; margin-bottom: 0; }
.contact-item a { color: var(--accent-light); transition: color 0.2s; }
.contact-item a:hover { color: white; text-decoration: underline; }
.contact-form {
  background: rgba(255,255,255,0.05);
  padding: 32px;
  border-radius: 8px;
  border: 1px solid rgba(255,255,255,0.1);
}
.form-group { margin-bottom: 20px; }
.form-group label {
  display: block;
  font-size: 0.85rem;
  font-weight: 500;
  color: rgba(255,255,255,0.8);
  margin-bottom: 8px;
}
.form-group input,
.form-group textarea,
.form-group select {
  width: 100%;
  padding: 12px 16px;
  background: rgba(255,255,255,0.08);
  border: 1px solid rgba(255,255,255,0.15);
  border-radius: 4px;
  color: white;
  font-size: 0.95rem;
  font-family: inherit;
  transition: border-color 0.2s;
}
.form-group input:focus,
.form-group textarea:focus,
.form-group select:focus {
  outline: none;
  border-color: var(--accent);
}
.form-group input::placeholder,
.form-group textarea::placeholder { color: rgba(255,255,255,0.4); }
.form-group textarea { resize: vertical; min-height: 100px; }
.form-row {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 16px;
}
.btn-submit {
  width: 100%;
  background: var(--cta);
  color: white;
  padding: 14px;
  border: none;
  border-radius: 4px;
  font-size: 1rem;
  font-weight: 600;
  cursor: pointer;
  transition: background 0.2s;
}
.btn-submit:hover { background: var(--cta-hover); }

/* ===== Footer ===== */
footer {
  background: #061a24;
  color: rgba(255,255,255,0.6);
  padding: 40px 0 24px;
  font-size: 0.85rem;
}
.footer-inner {
  max-width: 1200px;
  margin: 0 auto;
  padding: 0 24px;
  display: flex;
  justify-content: space-between;
  align-items: center;
  flex-wrap: wrap;
  gap: 16px;
}
.footer-logo {
  font-family: 'Playfair Display', serif;
  font-size: 1.1rem;
  font-weight: 700;
  color: white;
}
.footer-links { display: flex; gap: 24px; }
.footer-links a { transition: color 0.2s; }
.footer-links a:hover { color: var(--accent); }

/* ===== WhatsApp Floating Button ===== */
.wa-float {
  position: fixed;
  right: 22px;
  bottom: 22px;
  width: 60px;
  height: 60px;
  border-radius: 50%;
  background: #25d366;
  display: flex;
  align-items: center;
  justify-content: center;
  box-shadow: 0 6px 20px rgba(37,211,102,0.45);
  z-index: 1200;
  transition: transform 0.2s;
}
.wa-float:hover { transform: scale(1.08); }
.wa-float svg { width: 32px; height: 32px; fill: #ffffff; }

/* ===== Sub-page: page hero & breadcrumb ===== */
.page-hero {
  background: linear-gradient(135deg, rgba(10,58,76,0.94), rgba(14,77,100,0.8)), url('images/hero.svg') center/cover no-repeat;
  padding: 150px 0 70px;
  color: white;
}
.page-hero h1 {
  color: white;
  font-size: clamp(1.8rem, 4vw, 2.8rem);
  margin-bottom: 14px;
}
.page-hero .lead {
  color: rgba(255,255,255,0.88);
  max-width: 680px;
  font-size: 1.05rem;
  margin-bottom: 0;
}
.breadcrumb {
  font-size: 0.85rem;
  color: rgba(255,255,255,0.65);
  margin-bottom: 18px;
}
.breadcrumb a { color: var(--accent-light); }
.breadcrumb a:hover { text-decoration: underline; }
.spec-chips {
  display: flex;
  gap: 10px;
  flex-wrap: wrap;
  margin-top: 24px;
}
.spec-chip {
  background: rgba(0,180,216,0.15);
  border: 1px solid rgba(0,180,216,0.4);
  color: var(--accent-light);
  padding: 6px 14px;
  border-radius: 20px;
  font-size: 0.85rem;
  font-weight: 500;
}

/* ===== Responsive ===== */
@media (max-width: 768px) {
  .nav-links { display: none; }
  .mobile-toggle { display: block; }
  .nav-links.active {
    display: flex;
    flex-direction: column;
    position: absolute;
    top: 70px;
    left: 0;
    right: 0;
    background: white;
    padding: 20px 24px;
    border-bottom: 1px solid var(--border);
    gap: 16px;
  }
  section { padding: 50px 0; }
  .hero { min-height: auto; padding: 100px 0 60px; }
  .hero-stats { gap: 24px; margin-top: 40px; }
  .stat-number { font-size: 1.6rem; }
  .about-grid, .contact-grid { grid-template-columns: 1fr; gap: 32px; }
  .about-image img { height: 280px; }
  .form-row { grid-template-columns: 1fr; }
  .footer-inner { flex-direction: column; text-align: center; }
  .spec-table { font-size: 0.8rem; }
  .spec-table th, .spec-table td { padding: 8px 10px; }
  .page-hero { padding: 120px 0 50px; }
  .wa-float { width: 54px; height: 54px; right: 16px; bottom: 16px; }
  .wa-float svg { width: 28px; height: 28px; }
}