/* ==========================================================================
   VNMARK — Official Corporate Website Stylesheet
   Light theme, Navy (#0A192F) & Blue (#2563EB) accents
   ========================================================================== */

:root {
  --bg-page: #ffffff;
  --bg-subtle: #f8fafc;
  --bg-tint: #eff6ff;
  --bg-navy: #0a192f;
  --bg-navy-light: #112240;

  --text-primary: #0f172a;
  --text-secondary: #475569;
  --text-muted: #64748b;
  --text-inverse: #f8fafc;
  --text-inverse-muted: #cbd5e1;

  --accent: #2563eb;
  --accent-hover: #1d4ed8;
  --accent-soft: #dbeafe;

  --border: #e2e8f0;
  --border-strong: #cbd5e1;

  --shadow-sm: 0 1px 2px 0 rgba(15, 23, 42, 0.05);
  --shadow-md: 0 4px 16px -2px rgba(15, 23, 42, 0.08);
  --shadow-lg: 0 12px 32px -4px rgba(10, 25, 47, 0.12);

  --radius-sm: 6px;
  --radius-md: 10px;
  --radius-lg: 16px;

  --container-max: 1140px;
  --header-height: 72px;
  --transition: 0.2s ease;
}

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

html {
  scroll-behavior: smooth;
  -webkit-text-size-adjust: 100%;
}

body {
  margin: 0;
  font-family: -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto, "Helvetica Neue", Arial, "Noto Sans", sans-serif;
  font-size: 16px;
  line-height: 1.65;
  color: var(--text-primary);
  background-color: var(--bg-page);
  -webkit-font-smoothing: antialiased;
}

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

a {
  color: var(--accent);
  text-decoration: none;
  transition: color var(--transition);
}

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

h1,
h2,
h3,
h4 {
  margin: 0 0 0.75rem;
  color: var(--text-primary);
  font-weight: 700;
  line-height: 1.25;
  letter-spacing: -0.02em;
}

p {
  margin: 0 0 1rem;
  color: var(--text-secondary);
}

ul {
  margin: 0 0 1rem;
  padding-left: 1.25rem;
  color: var(--text-secondary);
}

li+li {
  margin-top: 0.45rem;
}

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

.section {
  padding: 72px 0;
}

.section--subtle {
  background-color: var(--bg-subtle);
  border-top: 1px solid var(--border);
  border-bottom: 1px solid var(--border);
}

.section--navy {
  background-color: var(--bg-navy);
  color: var(--text-inverse);
}

.section--navy h2,
.section--navy h3 {
  color: #ffffff;
}

.section--navy p {
  color: var(--text-inverse-muted);
}

.section-header {
  max-width: 680px;
  margin-bottom: 44px;
}

.eyebrow {
  display: inline-block;
  font-size: 0.8125rem;
  font-weight: 600;
  letter-spacing: 0.06em;
  text-transform: uppercase;
  color: var(--accent);
  margin-bottom: 10px;
}

.section-title {
  font-size: clamp(1.625rem, 2.5vw, 2.125rem);
}

.section-lead {
  font-size: 1.0625rem;
  color: var(--text-secondary);
}

/* Header & Navigation */
.site-header {
  position: sticky;
  top: 0;
  z-index: 100;
  height: var(--header-height);
  background-color: rgba(255, 255, 255, 0.94);
  backdrop-filter: blur(10px);
  border-bottom: 1px solid var(--border);
}

.header-inner {
  display: flex;
  align-items: center;
  justify-content: space-between;
  height: 100%;
  gap: 24px;
}

.brand-wordmark {
  display: inline-flex;
  align-items: center;
  gap: 10px;
  font-size: 1.375rem;
  font-weight: 800;
  letter-spacing: 0.04em;
  color: var(--bg-navy);
  text-decoration: none;
}

.brand-wordmark:hover {
  color: var(--bg-navy);
}

.brand-mark {
  width: 10px;
  height: 24px;
  border-radius: 3px;
  background: linear-gradient(180deg, var(--accent) 0%, var(--bg-navy) 100%);
  flex-shrink: 0;
}

.nav-wrapper {
  display: flex;
  align-items: center;
  gap: 28px;
}

.nav-list {
  display: flex;
  align-items: center;
  list-style: none;
  margin: 0;
  padding: 0;
  gap: 24px;
}

.nav-list li {
  margin: 0;
}

.nav-link {
  font-size: 0.9375rem;
  font-weight: 500;
  color: var(--text-secondary);
  padding: 6px 0;
  position: relative;
}

.nav-link:hover,
.nav-link.is-active {
  color: var(--bg-navy);
}

.nav-link.is-active::after {
  content: "";
  position: absolute;
  left: 0;
  right: 0;
  bottom: -2px;
  height: 2px;
  background-color: var(--accent);
  border-radius: 2px;
}

.lang-switch {
  display: inline-flex;
  align-items: center;
  border: 1px solid var(--border-strong);
  border-radius: var(--radius-sm);
  overflow: hidden;
  font-size: 0.8125rem;
  font-weight: 600;
}

.lang-switch a,
.lang-switch span {
  padding: 5px 10px;
  line-height: 1.2;
}

.lang-switch span.is-current {
  background-color: var(--bg-navy);
  color: #ffffff;
}

.lang-switch a {
  color: var(--text-secondary);
  background-color: #ffffff;
}

.lang-switch a:hover {
  background-color: var(--bg-subtle);
  color: var(--bg-navy);
}

.menu-toggle {
  display: none;
  align-items: center;
  justify-content: center;
  width: 40px;
  height: 40px;
  padding: 0;
  border: 1px solid var(--border);
  border-radius: var(--radius-sm);
  background-color: #ffffff;
  color: var(--bg-navy);
  cursor: pointer;
}

/* Buttons */
.btn-group {
  display: flex;
  flex-wrap: wrap;
  gap: 12px;
}

.btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: 8px;
  padding: 12px 22px;
  font-size: 0.9375rem;
  font-weight: 600;
  border-radius: var(--radius-sm);
  border: 1px solid transparent;
  cursor: pointer;
  transition: background-color var(--transition), border-color var(--transition), color var(--transition), transform var(--transition);
}

.btn:active {
  transform: translateY(1px);
}

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

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

.btn--secondary {
  background-color: #ffffff;
  color: var(--bg-navy);
  border-color: var(--border-strong);
}

.btn--secondary:hover {
  background-color: var(--bg-subtle);
  border-color: var(--bg-navy);
  color: var(--bg-navy);
}

.btn--inverse {
  background-color: #ffffff;
  color: var(--bg-navy);
}

.btn--inverse:hover {
  background-color: var(--accent-soft);
  color: var(--bg-navy);
}

.btn--outline-inverse {
  background-color: transparent;
  color: #ffffff;
  border-color: rgba(255, 255, 255, 0.35);
}

.btn--outline-inverse:hover {
  background-color: rgba(255, 255, 255, 0.1);
  border-color: #ffffff;
  color: #ffffff;
}

/* Hero */
.hero {
  padding: 68px 0 76px;
  background: radial-gradient(circle at 85% 20%, var(--bg-tint) 0%, #ffffff 55%);
  border-bottom: 1px solid var(--border);
}

.hero-grid {
  display: grid;
  grid-template-columns: 1.15fr 0.85fr;
  align-items: center;
  gap: 48px;
}

.hero-title {
  font-size: clamp(2rem, 3.8vw, 2.85rem);
  line-height: 1.16;
  color: var(--bg-navy);
  margin-bottom: 18px;
}

.hero-subtitle {
  font-size: 1.125rem;
  color: var(--text-secondary);
  margin-bottom: 28px;
  max-width: 560px;
}

.hero-visual {
  display: flex;
  justify-content: center;
  align-items: center;
}

.hero-visual img {
  width: 100%;
  max-width: 440px;
  height: auto;
  border-radius: var(--radius-lg);
  box-shadow: var(--shadow-lg);
  border: 1px solid var(--border);
  background-color: #ffffff;
}

/* Page Header (Subpages) */
.page-header {
  padding: 52px 0 44px;
  background-color: var(--bg-subtle);
  border-bottom: 1px solid var(--border);
}

.page-header h1 {
  font-size: clamp(1.75rem, 3vw, 2.375rem);
  color: var(--bg-navy);
}

.page-header p {
  font-size: 1.0625rem;
  max-width: 680px;
  margin-bottom: 0;
}

/* Cards & Grids */
.grid-3 {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 24px;
}

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

.card {
  background-color: #ffffff;
  border: 1px solid var(--border);
  border-radius: var(--radius-md);
  padding: 28px;
  box-shadow: var(--shadow-sm);
  transition: box-shadow var(--transition), border-color var(--transition), transform var(--transition);
  display: flex;
  flex-direction: column;
}

.card:hover {
  box-shadow: var(--shadow-md);
  border-color: var(--border-strong);
  transform: translateY(-2px);
}

.card-icon {
  width: 44px;
  height: 44px;
  border-radius: var(--radius-sm);
  background-color: var(--bg-tint);
  color: var(--accent);
  display: flex;
  align-items: center;
  justify-content: center;
  margin-bottom: 18px;
}

.card h3 {
  font-size: 1.25rem;
  color: var(--bg-navy);
}

.card-link {
  margin-top: auto;
  padding-top: 12px;
  font-size: 0.9375rem;
  font-weight: 600;
  display: inline-flex;
  align-items: center;
  gap: 6px;
}

/* Service Detail Blocks */
.service-block {
  background-color: #ffffff;
  border: 1px solid var(--border);
  border-radius: var(--radius-md);
  padding: 32px;
  margin-bottom: 24px;
  box-shadow: var(--shadow-sm);
}

.service-block:last-child {
  margin-bottom: 0;
}

.service-block-grid {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 32px;
  align-items: start;
}

.service-block h2 {
  font-size: 1.5rem;
  color: var(--bg-navy);
  display: flex;
  align-items: center;
  gap: 12px;
}

.service-scope-box {
  background-color: var(--bg-subtle);
  border: 1px solid var(--border);
  border-radius: var(--radius-sm);
  padding: 20px 22px;
}

.service-scope-box h3 {
  font-size: 0.9375rem;
  text-transform: uppercase;
  letter-spacing: 0.04em;
  color: var(--bg-navy);
  margin-bottom: 12px;
}

/* Corporate Info Table */
.info-panel {
  background-color: #ffffff;
  border: 1px solid var(--border);
  border-radius: var(--radius-md);
  overflow: hidden;
  box-shadow: var(--shadow-sm);
}

.info-row {
  display: grid;
  grid-template-columns: 240px 1fr;
  border-bottom: 1px solid var(--border);
}

.info-row:last-child {
  border-bottom: none;
}

.info-label {
  padding: 16px 20px;
  font-weight: 600;
  font-size: 0.9375rem;
  color: var(--bg-navy);
  background-color: var(--bg-subtle);
  border-right: 1px solid var(--border);
}

.info-value {
  padding: 16px 20px;
  font-size: 0.9375rem;
  color: var(--text-secondary);
}

/* CTA Banner */
.cta-banner {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 32px;
  flex-wrap: wrap;
}

.cta-banner-text {
  max-width: 640px;
}

/* Legal / Policy Content */
.prose {
  max-width: 800px;
}

.prose h2 {
  font-size: 1.375rem;
  color: var(--bg-navy);
  margin-top: 32px;
  margin-bottom: 12px;
}

.prose h2:first-child {
  margin-top: 0;
}

.notice-box {
  background-color: var(--bg-tint);
  border-left: 4px solid var(--accent);
  padding: 16px 20px;
  border-radius: 0 var(--radius-sm) var(--radius-sm) 0;
  margin: 20px 0;
}

.notice-box p:last-child {
  margin-bottom: 0;
}

/* Footer */
.site-footer {
  background-color: var(--bg-navy);
  color: var(--text-inverse-muted);
  padding: 56px 0 32px;
  font-size: 0.9375rem;
}

.footer-grid {
  display: grid;
  grid-template-columns: 1.5fr 1fr 1fr;
  gap: 36px;
  padding-bottom: 36px;
  border-bottom: 1px solid rgba(255, 255, 255, 0.12);
}

.footer-brand {
  font-size: 1.25rem;
  font-weight: 800;
  letter-spacing: 0.04em;
  color: #ffffff;
  margin-bottom: 10px;
}

.footer-legal-name {
  color: #ffffff;
  font-weight: 600;
  margin-bottom: 4px;
}

.footer-heading {
  font-size: 0.875rem;
  text-transform: uppercase;
  letter-spacing: 0.06em;
  color: #ffffff;
  margin-bottom: 14px;
}

.footer-list {
  list-style: none;
  padding: 0;
  margin: 0;
}

.footer-list li+li {
  margin-top: 8px;
}

.footer-list a {
  color: var(--text-inverse-muted);
}

.footer-list a:hover {
  color: #ffffff;
}

.footer-bottom {
  padding-top: 24px;
  display: flex;
  flex-wrap: wrap;
  justify-content: space-between;
  align-items: center;
  gap: 16px;
  font-size: 0.875rem;
  color: #94a3b8;
}

.footer-bottom a {
  color: #cbd5e1;
}

.footer-bottom a:hover {
  color: #ffffff;
}

/* Responsive */
@media (max-width: 960px) {

  .hero-grid,
  .service-block-grid,
  .footer-grid {
    grid-template-columns: 1fr;
  }

  .grid-3 {
    grid-template-columns: 1fr;
  }

  .grid-2 {
    grid-template-columns: 1fr;
  }

  .hero {
    padding: 48px 0 56px;
  }

  .hero-visual {
    order: -1;
  }

  .hero-visual img {
    max-width: 340px;
  }
}

@media (max-width: 768px) {
  .menu-toggle {
    display: inline-flex;
  }

  .nav-wrapper {
    position: fixed;
    top: var(--header-height);
    left: 0;
    right: 0;
    background-color: #ffffff;
    border-bottom: 1px solid var(--border);
    padding: 20px 24px 28px;
    flex-direction: column;
    align-items: flex-start;
    gap: 18px;
    box-shadow: var(--shadow-md);
    display: none;
  }

  .nav-wrapper.is-open {
    display: flex;
  }

  .nav-list {
    flex-direction: column;
    align-items: flex-start;
    width: 100%;
    gap: 12px;
  }

  .nav-link {
    display: block;
    width: 100%;
    padding: 8px 0;
  }

  .info-row {
    grid-template-columns: 1fr;
  }

  .info-label {
    border-right: none;
    border-bottom: 1px solid var(--border);
    padding: 12px 16px;
  }

  .info-value {
    padding: 12px 16px;
  }

  .section {
    padding: 52px 0;
  }
}