/* ===== RESET & BASE ===== */
*, *::before, *::after { margin: 0; padding: 0; box-sizing: border-box; }

:root {
  --blue: #4A7BA7;
  --blue-dark: #3A5F7F;
  --accent: #5B9BD5;
  --accent-dark: #4889C4;
  --bg: #ffffff;
  --bg-alt: #f8f9fa;
  --text: #1a1a1a;
  --text-muted: #6b7280;
  --border: #e5e7eb;
  --shadow: 0 1px 3px rgba(0,0,0,.08), 0 1px 2px rgba(0,0,0,.06);
  --shadow-lg: 0 10px 25px rgba(0,0,0,.1);
  --radius: 12px;
  --radius-sm: 8px;
}

html { scroll-behavior: smooth; }
body {
  font-family: 'DM Sans', sans-serif;
  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; }
button { cursor: pointer; border: none; background: none; font-family: inherit; font-size: inherit; color: inherit; }
ul { list-style: none; }
input { font-family: inherit; }

.container { max-width: 1200px; margin: 0 auto; padding: 0 20px; }
.hidden { display: none !important; }

/* ===== ANIMATIONS ===== */
@keyframes fadeUp {
  from { opacity: 0; transform: translateY(30px); }
  to { opacity: 1; transform: translateY(0); }
}
@keyframes pulse { 0%, 100% { opacity: 1; } 50% { opacity: .5; } }

.fade-up {
  opacity: 0;
  transform: translateY(30px);
  transition: opacity .6s ease, transform .6s ease;
}
.fade-up.visible {
  opacity: 1;
  transform: translateY(0);
}

/* ===== HEADER ===== */
.site-header {
  position: sticky;
  top: 0;
  z-index: 100;
  background: rgba(255,255,255,.95);
  backdrop-filter: blur(12px);
  border-bottom: 1px solid var(--border);
}
.header-inner {
  display: flex;
  align-items: center;
  justify-content: space-between;
  padding-top: 14px;
  padding-bottom: 14px;
}
.logo {
  display: flex;
  align-items: center;
  text-decoration: none;
}
.logo-img {
  height: 44px;
  width: auto;
  object-fit: contain;
}

.nav-desktop { display: none; gap: 32px; align-items: center; }
@media(min-width:768px) { .nav-desktop { display: flex; } }
.nav-link {
  font-size: 14px;
  font-weight: 500;
  color: var(--text);
  padding: 4px 0;
  border-bottom: 2px solid transparent;
  transition: color .2s, border-color .2s;
}
.nav-link:hover, .nav-link.active { color: var(--blue); border-color: var(--blue); }

.header-actions { display: flex; align-items: center; gap: 12px; }
.btn-header-cta {
  padding: 8px 20px;
  font-size: 13px;
  border-radius: var(--radius-sm);
  white-space: nowrap;
}
@media(max-width:480px) { .btn-header-cta { padding: 7px 14px; font-size: 12px; } }
.menu-toggle { padding: 8px; border-radius: var(--radius-sm); transition: background .2s; }
.menu-toggle:hover { background: var(--bg-alt); }
@media(min-width:768px) { .menu-toggle { display: none; } }

.nav-mobile {
  border-top: 1px solid var(--border);
  background: var(--bg-alt);
  padding: 16px 0;
}
.nav-mobile .container { display: flex; flex-direction: column; gap: 12px; }
.nav-link-mobile {
  text-align: left;
  font-size: 14px;
  font-weight: 500;
  color: var(--text);
  transition: color .2s;
}
.nav-link-mobile:hover { color: var(--blue); }

/* ===== BUTTONS ===== */
.btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: 8px;
  padding: 10px 24px;
  border-radius: var(--radius-sm);
  font-weight: 600;
  font-size: 14px;
  transition: all .2s;
  white-space: nowrap;
}
.btn-primary { background: var(--blue); color: #fff; }
.btn-primary:hover { background: var(--blue-dark); box-shadow: var(--shadow-lg); }
.btn-outline { border: 1.5px solid var(--blue); color: var(--blue); background: transparent; }
.btn-outline:hover { background: var(--bg-alt); }
.btn-sm { padding: 8px 16px; font-size: 13px; }
.btn-full { width: 100%; }

/* ===== HERO ===== */
.hero {
  position: relative;
  padding: 64px 0;
  overflow: hidden;
}
@media(min-width:768px) { .hero { padding: 96px 0; } }
.hero-bg { position: absolute; inset: 0; opacity: .1; pointer-events: none; }
.hero-blob {
  position: absolute;
  border-radius: 50%;
  filter: blur(80px);
}
.hero-blob-1 { top: 40px; right: 40px; width: 300px; height: 300px; background: var(--accent); }
.hero-blob-2 { bottom: 0; left: 0; width: 380px; height: 380px; background: #7BACC9; }
.hero-grid {
  position: relative;
  z-index: 1;
  display: grid;
  gap: 48px;
  align-items: center;
}
@media(min-width:768px) { .hero-grid { grid-template-columns: 1fr 1fr; } }
.hero-label {
  color: var(--accent);
  font-weight: 600;
  font-size: 13px;
  text-transform: uppercase;
  letter-spacing: 1.5px;
  margin-bottom: 8px;
}
.hero-title {
  font-family: 'Playfair Display', serif;
  font-size: clamp(32px, 5vw, 48px);
  color: var(--blue);
  line-height: 1.15;
  margin-bottom: 16px;
}
.hero-desc {
  font-size: 17px;
  color: var(--text-muted);
  line-height: 1.7;
  margin-bottom: 28px;
}
.hero-buttons { display: flex; flex-wrap: wrap; gap: 12px; }
.hero-image img {
  width: 100%;
  height: 100%;
  object-fit: cover;
  border-radius: 16px;
  box-shadow: var(--shadow-lg);
  aspect-ratio: 4/3;
}

/* ===== SECTIONS ===== */
.section { padding: 64px 0; }
@media(min-width:768px) { .section { padding: 96px 0; } }
.section-alt { background: var(--bg-alt); }
.section-header { text-align: center; margin-bottom: 48px; }
.section-label {
  color: var(--accent);
  font-weight: 600;
  font-size: 13px;
  text-transform: uppercase;
  letter-spacing: 1.5px;
  margin-bottom: 8px;
}
.section-title {
  font-family: 'Playfair Display', serif;
  font-size: clamp(26px, 4vw, 36px);
  color: var(--blue);
  margin-bottom: 12px;
}
.section-subtitle { color: var(--text-muted); max-width: 600px; margin: 0 auto; }

/* ===== ABOUT ===== */
.about-grid {
  display: grid;
  gap: 48px;
  align-items: center;
}
@media(min-width:768px) { .about-grid { grid-template-columns: 1fr 1fr; } }
.about-image img {
  width: 100%;
  height: 100%;
  object-fit: cover;
  border-radius: 16px;
  box-shadow: var(--shadow-lg);
  aspect-ratio: 4/3;
}
.about-content p { color: var(--text-muted); margin-bottom: 16px; }
.stats-row {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 16px;
  padding-top: 16px;
}
.stat { text-align: center; }
.stat-number { display: block; font-size: 28px; font-weight: 700; color: var(--blue); }
.stat-label { font-size: 12px; color: var(--text-muted); }

/* ===== EDUCATION ===== */
.edu-grid {
  display: grid;
  gap: 20px;
}
@media(min-width:768px) { .edu-grid { grid-template-columns: 1fr 1fr; } }
.edu-card {
  display: flex;
  gap: 16px;
  padding: 24px;
  background: #fff;
  border-radius: var(--radius);
  border: 1px solid var(--border);
  transition: box-shadow .3s;
}
.edu-card:hover { box-shadow: var(--shadow-lg); }
.edu-icon {
  width: 48px;
  height: 48px;
  min-width: 48px;
  background: var(--accent);
  border-radius: var(--radius-sm);
  display: flex;
  align-items: center;
  justify-content: center;
  color: #fff;
  font-size: 20px;
}
.edu-card h3 { font-weight: 600; color: var(--blue); margin-bottom: 8px; }
.edu-card p { font-size: 14px; color: var(--text-muted); }

.disclaimer-box {
  margin-top: 48px;
  padding: 32px;
  background: var(--blue);
  border-radius: 16px;
  color: #fff;
}
.disclaimer-box h3 { font-size: 22px; font-weight: 700; margin-bottom: 12px; }
.disclaimer-box p { margin-bottom: 8px; opacity: .9; }

/* ===== PRODUCTS ===== */
.filter-row {
  display: flex;
  gap: 12px;
  justify-content: center;
  flex-wrap: wrap;
  margin-bottom: 32px;
}
.filter-btn {
  padding: 8px 20px;
  border-radius: var(--radius-sm);
  font-weight: 600;
  font-size: 14px;
  border: 1.5px solid var(--blue);
  color: var(--blue);
  transition: all .2s;
}
.filter-btn.active, .filter-btn:hover { background: var(--blue); color: #fff; }

.products-grid {
  display: grid;
  gap: 24px;
}
@media(min-width:640px) { .products-grid { grid-template-columns: repeat(2, 1fr); } }
@media(min-width:1024px) { .products-grid { grid-template-columns: repeat(4, 1fr); } }

.product-card {
  background: #fff;
  border-radius: var(--radius);
  border: 1px solid var(--border);
  overflow: hidden;
  transition: box-shadow .3s, transform .3s;
}
.product-card:hover { box-shadow: var(--shadow-lg); transform: translateY(-4px); }
.product-img {
  position: relative;
  height: 190px;
  background: #f3f4f6;
  overflow: hidden;
}
.product-img img {
  width: 100%;
  height: 100%;
  object-fit: cover;
  transition: transform .4s;
}
.product-card:hover .product-img img { transform: scale(1.05); }
.product-buy-btn {
  display: inline-flex;
  align-items: center;
  gap: 6px;
  padding: 8px 14px;
  background: var(--blue);
  color: #fff;
  border-radius: var(--radius-sm);
  font-size: 13px;
  font-weight: 600;
  text-decoration: none;
  transition: background .2s;
  white-space: nowrap;
}
.product-buy-btn:hover { background: var(--blue-dark); }
.product-body { padding: 16px; }
.product-category {
  font-size: 11px;
  color: var(--accent);
  font-weight: 600;
  text-transform: uppercase;
  letter-spacing: .8px;
  margin-bottom: 4px;
}
.product-name {
  font-weight: 600;
  font-size: 15px;
  margin-bottom: 6px;
  display: -webkit-box;
  -webkit-line-clamp: 2;
  -webkit-box-orient: vertical;
  overflow: hidden;
}
.product-desc {
  font-size: 12px;
  color: var(--text-muted);
  margin-bottom: 10px;
  display: -webkit-box;
  -webkit-line-clamp: 2;
  -webkit-box-orient: vertical;
  overflow: hidden;
}
.product-tags { display: flex; flex-wrap: wrap; gap: 4px; margin-bottom: 12px; }
.product-tag {
  font-size: 11px;
  background: var(--accent);
  color: #fff;
  padding: 3px 8px;
  border-radius: 4px;
}
.product-footer { display: flex; align-items: center; justify-content: space-between; }
.product-code { font-size: 11px; color: var(--text-muted); }
.product-price { font-size: 18px; font-weight: 700; color: var(--blue); }
/* ===== CONTACT ===== */
.contact-grid {
  display: grid;
  gap: 24px;
  margin-bottom: 48px;
}
@media(min-width:768px) { .contact-grid { grid-template-columns: repeat(3, 1fr); } }
.contact-card {
  background: #fff;
  border: 1px solid var(--border);
  border-radius: var(--radius);
  padding: 32px;
  text-align: center;
  transition: box-shadow .3s;
}
.contact-card:hover { box-shadow: var(--shadow-lg); }
.contact-icon {
  width: 48px; height: 48px;
  background: var(--accent);
  border-radius: var(--radius-sm);
  display: flex;
  align-items: center;
  justify-content: center;
  margin: 0 auto 16px;
}
.contact-card h3 { font-weight: 600; margin-bottom: 6px; }
.contact-card p { font-size: 14px; color: var(--text-muted); margin-bottom: 16px; }

/* ===== FOOTER ===== */
.site-footer {
  background: #1a1a1a;
  color: #fff;
  padding: 48px 0;
}
.footer-grid {
  display: grid;
  gap: 32px;
  margin-bottom: 32px;
}
@media(min-width:768px) { .footer-grid { grid-template-columns: repeat(4, 1fr); } }
.site-footer h4 { font-weight: 700; margin-bottom: 16px; }
.site-footer p, .site-footer li { font-size: 14px; color: #9ca3af; }
.site-footer li { margin-bottom: 8px; }
.site-footer a:hover { color: #fff; }
.social-links { display: flex; gap: 16px; }
.social-links a { color: #9ca3af; transition: color .2s; }
.social-links a:hover { color: var(--accent); }

.footer-bottom { border-top: 1px solid #374151; padding-top: 32px; }
.footer-info {
  display: grid;
  gap: 24px;
  margin-bottom: 16px;
  font-size: 14px;
  color: #9ca3af;
}
@media(min-width:768px) { .footer-info { grid-template-columns: 1fr 1fr; } }
.footer-info-title { font-weight: 600; color: #fff; margin-bottom: 8px; }
.footer-copy {
  text-align: center;
  font-size: 12px;
  color: #6b7280;
  padding-top: 16px;
  border-top: 1px solid #374151;
}