/* MyDB — corporate stylesheet */
:root {
  --blue: #00618a;
  --blue-dark: #003a55;
  --blue-light: #e6f2f8;
  --orange: #e48e00;
  --orange-dark: #b57100;
  --white: #ffffff;
  --gray-50: #f6f8fa;
  --gray-100: #eef1f4;
  --gray-200: #dde3e9;
  --gray-600: #5a6672;
  --gray-800: #23303b;
  --gray-900: #14202a;
  --radius: 10px;
  --shadow: 0 10px 30px rgba(0, 58, 85, 0.12);
  --font: "Segoe UI", Roboto, "Helvetica Neue", Arial, sans-serif;
}

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

html { scroll-behavior: smooth; }

body {
  font-family: var(--font);
  color: var(--gray-800);
  background: var(--white);
  line-height: 1.6;
  -webkit-font-smoothing: antialiased;
}

.container { max-width: 1180px; margin: 0 auto; padding: 0 24px; }
a { color: var(--blue); text-decoration: none; }
a:hover { color: var(--orange); }
ul { list-style: none; }

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

/* ---------- Header ---------- */
.site-header {
  background: var(--white);
  border-bottom: 1px solid var(--gray-100);
  position: sticky;
  top: 0;
  z-index: 50;
  box-shadow: 0 2px 8px rgba(20, 32, 42, 0.04);
}
.header-inner { display: flex; align-items: center; gap: 24px; height: 72px; }
.logo { display: flex; align-items: center; gap: 8px; }
.logo-dolphin { width: 40px; height: 24px; }
.logo-text {
  font-size: 1.5rem;
  font-weight: 700;
  color: var(--blue-dark);
  letter-spacing: -0.5px;
}
.main-nav ul { display: flex; gap: 4px; flex-wrap: wrap; }
.main-nav a {
  display: block;
  padding: 8px 12px;
  border-radius: 8px;
  color: var(--gray-800);
  font-weight: 500;
  font-size: 0.95rem;
}
.main-nav a:hover { background: var(--blue-light); color: var(--blue); }
.header-tools { margin-left: auto; display: flex; align-items: center; gap: 12px; }
.search-tool input, #doc-search, #global-search {
  border: 1px solid var(--gray-200);
  border-radius: 20px;
  padding: 8px 16px;
  font-size: 0.9rem;
  min-width: 180px;
  outline: none;
  transition: border-color 0.2s;
}
.search-tool input:focus, #doc-search:focus { border-color: var(--blue); }
.lang-toggle {
  border: 1px solid var(--gray-200);
  background: var(--white);
  border-radius: 8px;
  padding: 7px 12px;
  font-weight: 600;
  cursor: pointer;
  color: var(--blue-dark);
}
.lang-toggle:hover { border-color: var(--orange); color: var(--orange); }
.nav-toggle { display: none; font-size: 1.4rem; background: none; border: none; cursor: pointer; }

/* ---------- Buttons ---------- */
.btn {
  display: inline-block;
  border: none;
  border-radius: var(--radius);
  padding: 14px 30px;
  font-size: 1rem;
  font-weight: 600;
  cursor: pointer;
  text-align: center;
  transition: transform 0.15s, box-shadow 0.15s, background 0.15s;
}
.btn:hover { transform: translateY(-2px); }
.btn-primary { background: var(--blue); color: var(--white); box-shadow: var(--shadow); }
.btn-primary:hover { background: var(--blue-dark); color: var(--white); }
.btn-outline { background: transparent; color: var(--blue-dark); border: 2px solid var(--blue-dark); }
.btn-outline:hover { background: var(--blue-dark); color: var(--white); }
.btn-full { width: 100%; }

/* ---------- Hero ---------- */
.hero { background: linear-gradient(135deg, var(--blue-dark), var(--blue)); color: var(--white); }
.hero-grid { display: grid; grid-template-columns: 1.2fr 0.8fr; gap: 48px; align-items: center; padding: 96px 24px; }
.hero h1 { font-size: 3rem; line-height: 1.15; letter-spacing: -1px; max-width: 640px; }
.hero-sub { font-size: 1.15rem; color: rgba(255,255,255,0.85); max-width: 560px; margin: 20px 0 32px; }
.hero-cta { display: flex; gap: 16px; flex-wrap: wrap; }
.hero-cta .btn-primary { background: var(--orange); color: var(--white); }
.hero-cta .btn-primary:hover { background: var(--orange-dark); }
.hero-cta .btn-outline { border-color: var(--white); color: var(--white); }
.hero-cta .btn-outline:hover { background: var(--white); color: var(--blue-dark); }
.hero-meta { margin-top: 28px; font-size: 0.9rem; color: rgba(255,255,255,0.7); display: flex; gap: 10px; }

.db-visual { position: relative; height: 320px; display: flex; align-items: center; justify-content: center; }
.db-cyl {
  position: absolute;
  width: 210px;
  height: 210px;
  border-radius: 50%;
  border: 10px solid rgba(255,255,255,0.28);
  border-bottom-color: var(--orange);
  transform: rotate(-30deg);
}
.db-cyl-front { border-color: var(--orange); border-bottom-color: transparent; transform: rotate(40deg) scale(0.9); }
.db-tag {
  position: absolute;
  background: var(--white);
  color: var(--blue-dark);
  font-weight: 800;
  font-size: 1.4rem;
  padding: 10px 22px;
  border-radius: 14px;
  box-shadow: var(--shadow);
}

/* ---------- Sections ---------- */
.section { padding: 72px 24px; }
.section-title { font-size: 2rem; color: var(--blue-dark); letter-spacing: -0.5px; text-align: center; }
.section-sub { text-align: center; color: var(--gray-600); margin: 12px 0 40px; }

/* ---------- Products ---------- */
.products { padding: 72px 24px; }
.product-grid { display: grid; grid-template-columns: repeat(4, 1fr); gap: 24px; }
.product-card {
  background: var(--gray-50);
  border: 1px solid var(--gray-100);
  border-radius: var(--radius);
  padding: 28px;
  transition: transform 0.2s, box-shadow 0.2s;
}
.product-card:hover { transform: translateY(-4px); box-shadow: var(--shadow); }
.product-icon { font-size: 2rem; margin-bottom: 12px; }
.product-card h3 { color: var(--blue-dark); margin-bottom: 8px; }
.product-card p { color: var(--gray-600); font-size: 0.95rem; margin-bottom: 14px; }
.link { font-weight: 600; }

/* ---------- Advantages ---------- */
.advantages { background: var(--gray-50); padding: 72px 24px; }
.adv-grid { display: grid; grid-template-columns: repeat(3, 1fr); gap: 24px; }
.adv-item { background: var(--white); border-radius: var(--radius); padding: 28px; box-shadow: 0 4px 16px rgba(20,32,42,0.05); }
.adv-ico { font-size: 1.8rem; display: inline-block; margin-bottom: 10px; }
.adv-item h4 { color: var(--blue-dark); margin-bottom: 6px; }
.adv-item p { color: var(--gray-600); font-size: 0.95rem; }

/* ---------- Customers ---------- */
.customers { padding: 72px 24px; }
.logo-row { display: flex; flex-wrap: wrap; gap: 16px; justify-content: center; margin-bottom: 48px; }
.cust-logo {
  border: 1px solid var(--gray-200);
  border-radius: 10px;
  padding: 14px 22px;
  color: var(--gray-600);
  font-weight: 700;
  font-size: 1rem;
  background: var(--gray-50);
}
.case-grid { display: grid; grid-template-columns: repeat(3, 1fr); gap: 24px; }
.case-card { border-left: 4px solid var(--orange); padding: 20px 24px; background: var(--gray-50); border-radius: 0 10px 10px 0; }
.case-card h4 { color: var(--blue-dark); }
.case-card p { margin: 8px 0; color: var(--gray-600); font-style: italic; }
.case-co { color: var(--gray-600); font-size: 0.9rem; font-weight: 600; }

/* ---------- News ---------- */
.news { background: var(--blue-light); padding: 72px 24px; }
.news-grid { display: grid; grid-template-columns: repeat(3, 1fr); gap: 24px; }
.news-card { background: var(--white); border-radius: var(--radius); padding: 24px; box-shadow: var(--shadow); }
.news-date { font-size: 0.8rem; color: var(--orange); font-weight: 700; text-transform: uppercase; }
.news-card h3 { color: var(--blue-dark); margin: 6px 0 8px; }
.news-card p { color: var(--gray-600); font-size: 0.95rem; margin-bottom: 12px; }

/* ---------- Newsletter ---------- */
.newsletter { padding: 72px 24px; text-align: center; }
.newsletter h2 { color: var(--blue-dark); }
.newsletter p { color: var(--gray-600); margin: 10px 0 24px; }
.news-form { display: flex; gap: 12px; max-width: 480px; margin: 0 auto; }
.news-form input { flex: 1; border: 1px solid var(--gray-200); border-radius: var(--radius); padding: 14px 18px; font-size: 1rem; }
.news-form input:focus { outline: none; border-color: var(--blue); }
.form-note { margin-top: 12px; color: var(--blue); font-weight: 600; min-height: 24px; }

/* ---------- Page hero ---------- */
.page-hero { background: linear-gradient(135deg, var(--blue-dark), var(--blue)); color: var(--white); padding: 72px 24px; text-align: center; }
.page-hero h1 { font-size: 2.6rem; }
.page-hero .section-sub { color: rgba(255,255,255,0.85); margin-bottom: 0; }
.search-bar { max-width: 520px; margin: 32px auto 0; }

/* ---------- Downloads ---------- */
.download-grid { display: grid; grid-template-columns: repeat(3, 1fr); gap: 24px; margin-bottom: 40px; }
.download-card { border: 1px solid var(--gray-200); border-radius: var(--radius); padding: 28px; background: var(--gray-50); }
.download-card.highlight { border: 2px solid var(--orange); background: var(--white); box-shadow: var(--shadow); }
.download-card h3 { color: var(--blue-dark); }
.dl-ver { color: var(--orange); font-weight: 700; margin: 4px 0 16px; }
.download-card ul { margin-bottom: 20px; }
.download-card li { padding: 4px 0; color: var(--gray-600); }
.download-card li::before { content: "✓ "; color: var(--orange); font-weight: 700; }
.os-panel { background: var(--gray-50); border-radius: var(--radius); padding: 28px; border: 1px solid var(--gray-200); }
.os-panel h3 { color: var(--blue-dark); margin-bottom: 16px; }
.os-buttons { display: flex; flex-wrap: wrap; gap: 12px; }

/* ---------- Documentation ---------- */
.doc-grid { display: grid; grid-template-columns: repeat(2, 1fr); gap: 24px; }
.doc-card { border: 1px solid var(--gray-200); border-radius: var(--radius); padding: 28px; }
.doc-card h3 { color: var(--blue-dark); margin-bottom: 8px; }
.doc-card p { color: var(--gray-600); margin-bottom: 12px; }
.doc-card li { padding: 4px 0; }

/* ---------- Contact ---------- */
.contact-grid { display: grid; grid-template-columns: 0.8fr 1.2fr; gap: 48px; }
.contact-info h2 { color: var(--blue-dark); }
.contact-info p { color: var(--gray-600); margin: 12px 0 20px; }
.contact-list li { padding: 6px 0; color: var(--gray-800); }
.contact-form { background: var(--gray-50); border-radius: var(--radius); padding: 32px; }
.field { margin-bottom: 18px; }
.field label { display: block; font-weight: 600; color: var(--blue-dark); margin-bottom: 6px; }
.field input, .field textarea {
  width: 100%;
  border: 1px solid var(--gray-200);
  border-radius: var(--radius);
  padding: 12px 16px;
  font-size: 1rem;
  font-family: inherit;
}
.field input:focus, .field textarea:focus { outline: none; border-color: var(--blue); }

/* ---------- Footer ---------- */
.site-footer { background: var(--gray-900); color: #c6d0d8; padding-top: 56px; }
.footer-grid { display: grid; grid-template-columns: 2fr repeat(6, 1fr); gap: 28px; }
.footer-brand p { margin: 12px 0 16px; font-size: 0.9rem; color: #9fb0bc; }
.logo-footer .logo-text { color: var(--white); }
.socials { display: flex; gap: 8px; }
.socials a {
  width: 36px; height: 36px;
  border: 1px solid #33475a;
  border-radius: 8px;
  display: flex; align-items: center; justify-content: center;
  color: #c6d0d8; font-size: 0.8rem; font-weight: 700;
}
.socials a:hover { border-color: var(--orange); color: var(--orange); }
.footer-col h4 { color: var(--white); font-size: 0.95rem; margin-bottom: 14px; }
.footer-col li { padding: 5px 0; }
.footer-col a { color: #9fb0bc; font-size: 0.9rem; }
.footer-col a:hover { color: var(--orange); }
.footer-bottom { border-top: 1px solid #23303b; margin-top: 48px; padding: 20px 0; }
.footer-bottom p { font-size: 0.85rem; color: #7d8f9c; text-align: center; }

/* ---------- Responsive ---------- */
@media (max-width: 960px) {
  .product-grid { grid-template-columns: repeat(2, 1fr); }
  .adv-grid { grid-template-columns: repeat(2, 1fr); }
  .case-grid, .news-grid { grid-template-columns: repeat(2, 1fr); }
  .download-grid { grid-template-columns: 1fr; }
  .doc-grid, .contact-grid { grid-template-columns: 1fr; }
  .footer-grid { grid-template-columns: repeat(3, 1fr); }
  .hero-grid { grid-template-columns: 1fr; padding: 64px 24px; }
  .hero h1 { font-size: 2.4rem; }
}

@media (max-width: 640px) {
  .nav-toggle { display: block; }
  .main-nav {
    position: absolute;
    top: 72px; left: 0; right: 0;
    background: var(--white);
    border-bottom: 1px solid var(--gray-100);
    display: none;
    padding: 12px 24px 20px;
    box-shadow: var(--shadow);
  }
  body.nav-open .main-nav { display: block; }
  .main-nav ul { flex-direction: column; }
  .header-tools { margin-left: auto; }
  .search-tool { display: none; }
  .product-grid, .adv-grid, .case-grid, .news-grid, .doc-grid { grid-template-columns: 1fr; }
  .footer-grid { grid-template-columns: repeat(2, 1fr); }
  .hero h1 { font-size: 2rem; }
  .news-form { flex-direction: column; }
  .hero-cta .btn { width: 100%; }
}