/* ===== Northbridge Tech — global styles ===== */

:root {
  --navy: #0B1B33;
  --text: #3B4759;
  --muted: #55627A;
  --faint: #7A8699;
  --blue: #2563EB;
  --blue-dark: #1D4ED8;
  --blue-soft: #EAF1FE;
  --bg-alt: #F4F7FC;
  --border: #E3E8F0;
  --border-strong: #D5DCE6;
  --border-faint: #EDF0F5;
  --footer-muted: #93A3BC;
  --footer-faint: #6E7F9A;
}

* { box-sizing: border-box; }

html { scroll-behavior: smooth; }

body {
  margin: 0;
  background: #FFFFFF;
  font-family: 'Manrope', sans-serif;
  color: var(--navy);
}

a { color: var(--blue); text-decoration: none; }
a:hover { color: var(--blue-dark); }

img { max-width: 100%; }

.container { max-width: 1100px; margin: 0 auto; padding: 0 32px; }

.eyebrow {
  font-size: 13px;
  font-weight: 700;
  color: var(--blue);
  letter-spacing: 0.1em;
  text-transform: uppercase;
}

.section-title {
  margin: 0;
  font-size: clamp(28px, 5vw, 38px);
  font-weight: 800;
  letter-spacing: -0.02em;
  color: var(--navy);
  text-wrap: balance;
}

/* ===== Header ===== */

.site-header {
  position: sticky;
  top: 0;
  z-index: 50;
  background: rgba(255, 255, 255, 0.92);
  backdrop-filter: blur(12px);
  -webkit-backdrop-filter: blur(12px);
  border-bottom: 1px solid var(--border-faint);
}

.site-header__inner {
  max-width: 1200px;
  margin: 0 auto;
  display: flex;
  align-items: center;
  justify-content: space-between;
  padding: 18px 32px;
}

.logo { font-size: 19px; font-weight: 800; color: var(--navy); }
.logo:hover { color: var(--navy); }
.logo span { color: var(--blue); }

.site-nav { display: flex; align-items: center; gap: 32px; }

.site-nav a { font-size: 15px; font-weight: 600; color: var(--text); }
.site-nav a:hover { color: var(--blue); }

.site-nav .btn-primary,
.site-nav .btn-primary:hover { color: #FFFFFF; }

.nav-toggle {
  display: none;
  flex-direction: column;
  justify-content: center;
  gap: 5px;
  width: 44px;
  height: 44px;
  padding: 10px;
  background: none;
  border: 1px solid var(--border-strong);
  border-radius: 10px;
  cursor: pointer;
}

.nav-toggle span {
  display: block;
  height: 2px;
  border-radius: 2px;
  background: var(--navy);
  transition: transform 0.2s ease, opacity 0.2s ease;
}

.nav-toggle[aria-expanded="true"] span:nth-child(1) { transform: translateY(7px) rotate(45deg); }
.nav-toggle[aria-expanded="true"] span:nth-child(2) { opacity: 0; }
.nav-toggle[aria-expanded="true"] span:nth-child(3) { transform: translateY(-7px) rotate(-45deg); }

/* ===== Buttons ===== */

.btn-primary {
  display: inline-block;
  background: var(--blue);
  color: #FFFFFF;
  font-size: 15px;
  font-weight: 700;
  padding: 10px 20px;
  border-radius: 8px;
}
.btn-primary:hover { background: var(--blue-dark); color: #FFFFFF; }

.btn-primary--lg { font-size: 16px; padding: 14px 26px; border-radius: 10px; }

.btn-secondary {
  display: inline-block;
  background: #FFFFFF;
  color: var(--navy);
  font-size: 16px;
  font-weight: 700;
  padding: 14px 26px;
  border-radius: 10px;
  border: 1px solid var(--border-strong);
}
.btn-secondary:hover { border-color: var(--blue); color: var(--blue); }

/* ===== Hero ===== */

.hero {
  background: linear-gradient(180deg, #FFFFFF 0%, #F4F7FC 100%);
  overflow: hidden;
}

.hero__inner {
  max-width: 1200px;
  margin: 0 auto;
  display: grid;
  grid-template-columns: 1fr 1.05fr;
  gap: 48px;
  padding: 88px 0 88px 32px;
  align-items: center;
}

.hero__copy { display: flex; flex-direction: column; gap: 24px; }

.hero__title {
  margin: 0;
  font-size: clamp(34px, 6vw, 50px);
  line-height: 1.08;
  font-weight: 800;
  color: var(--navy);
  letter-spacing: -0.02em;
  text-wrap: balance;
}

.hero__lead { font-size: 18px; line-height: 1.6; color: var(--text); max-width: 480px; }
.hero__sub { font-size: 15px; line-height: 1.6; color: var(--muted); max-width: 480px; }

.hero__actions { display: flex; gap: 14px; flex-wrap: wrap; }

.hero__visual { position: relative; height: 460px; overflow: hidden; }

.browser-frame {
  position: absolute;
  left: 0;
  top: 30px;
  width: 760px;
  background: #FFFFFF;
  border-radius: 12px;
  box-shadow: 0 24px 64px rgba(11, 27, 51, 0.18);
  border: 1px solid var(--border);
  overflow: hidden;
}

.browser-frame__bar {
  display: flex;
  align-items: center;
  gap: 8px;
  padding: 10px 14px;
  background: #F4F6FA;
  border-bottom: 1px solid var(--border);
}

.browser-frame__dot { width: 10px; height: 10px; border-radius: 50%; background: #E4E9F1; }

.browser-frame__url {
  margin-left: 12px;
  background: #FFFFFF;
  border-radius: 6px;
  padding: 4px 14px;
  font-size: 12px;
  color: var(--faint);
  border: 1px solid var(--border);
}

.browser-frame img { width: 100%; display: block; }

/* ===== About ===== */

.about { padding: 96px 32px; }

.about__inner {
  max-width: 900px;
  margin: 0 auto;
  display: flex;
  flex-direction: column;
  gap: 20px;
  text-align: center;
  align-items: center;
}

.about__inner p { margin: 0; font-size: 17px; line-height: 1.7; color: var(--text); max-width: 760px; }

/* ===== Corporate Structure ===== */

.structure { background: var(--bg-alt); padding: 96px 0; }

.structure__inner {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 64px;
  align-items: center;
}

.structure__copy { display: flex; flex-direction: column; gap: 20px; }
.structure__copy p { margin: 0; font-size: 16px; line-height: 1.7; color: var(--text); }

.structure__chart { display: flex; flex-direction: column; align-items: center; }

.org-card { width: 100%; max-width: 420px; border-radius: 14px; padding: 28px 32px; }
.org-card--parent { background: var(--navy); color: #FFFFFF; }
.org-card--child { background: #FFFFFF; border: 1px solid var(--border-strong); }

.org-card__label {
  font-size: 12px;
  font-weight: 700;
  letter-spacing: 0.1em;
  text-transform: uppercase;
  margin-bottom: 8px;
}
.org-card--parent .org-card__label { color: #8FB2F2; }
.org-card--child .org-card__label { color: var(--blue); }

.org-card__name { font-size: 20px; font-weight: 800; }
.org-card--child .org-card__name { color: var(--navy); }

.org-card__desc { font-size: 14px; margin-top: 6px; }
.org-card--parent .org-card__desc { color: #B9C6DA; }
.org-card--child .org-card__desc { color: var(--muted); }

.org-link { display: flex; flex-direction: column; align-items: center; padding: 4px 0; }
.org-link__line { width: 2px; height: 28px; background: #B9C6DA; }
.org-link__pill {
  font-size: 12px;
  font-weight: 700;
  color: var(--muted);
  background: #FFFFFF;
  border: 1px solid var(--border-strong);
  border-radius: 100px;
  padding: 4px 14px;
}

/* ===== Products ===== */

.products { padding: 96px 0; }

.section-head {
  display: flex;
  flex-direction: column;
  gap: 14px;
  text-align: center;
  align-items: center;
  margin-bottom: 40px;
}

.products__grid { display: grid; grid-template-columns: 1fr 1fr; gap: 28px; }

.product-card {
  background: #FFFFFF;
  border: 1px solid var(--border);
  border-radius: 18px;
  overflow: hidden;
  display: flex;
  flex-direction: column;
  box-shadow: 0 4px 24px rgba(11, 27, 51, 0.06);
}

.product-card__media {
  background: linear-gradient(135deg, #EAF1FE 0%, #F4F7FC 100%);
  padding: 28px 28px 0;
  height: 240px;
  overflow: hidden;
}

.product-card__media--empty {
  background: var(--bg-alt);
  padding: 28px;
  display: flex;
  align-items: center;
  justify-content: center;
}

.product-card__window {
  background: #FFFFFF;
  border-radius: 10px 10px 0 0;
  border: 1px solid var(--border);
  border-bottom: none;
  box-shadow: 0 12px 40px rgba(11, 27, 51, 0.12);
  overflow: hidden;
}

.product-card__window-bar {
  display: flex;
  align-items: center;
  gap: 6px;
  padding: 8px 12px;
  background: #F4F6FA;
  border-bottom: 1px solid var(--border);
}

.product-card__window-bar span { width: 8px; height: 8px; border-radius: 50%; background: #E4E9F1; }

.product-card__window img { width: 100%; display: block; }

.placeholder-mark { display: flex; flex-direction: column; align-items: center; gap: 12px; }

.placeholder-mark__icon {
  width: 56px;
  height: 56px;
  border-radius: 14px;
  border: 2px dashed #B9C6DA;
  display: flex;
  align-items: center;
  justify-content: center;
  color: var(--faint);
  font-size: 24px;
  font-weight: 800;
}

.placeholder-mark__note { font-size: 13px; font-weight: 600; color: var(--faint); }

.product-card__body { padding: 28px; display: flex; flex-direction: column; gap: 14px; flex: 1; }

.product-card__title-row { display: flex; align-items: center; gap: 12px; flex-wrap: wrap; }
.product-card__name { font-size: 22px; font-weight: 800; color: var(--navy); }

.badge {
  font-size: 12px;
  font-weight: 700;
  padding: 4px 12px;
  border-radius: 100px;
}
.badge--soon { color: #B45309; background: #FEF3E2; border: 1px solid #F5D9A8; }
.badge--dev { color: #475569; background: #F1F5F9; border: 1px solid #DBE2EA; }

.product-card__desc { margin: 0; font-size: 15px; line-height: 1.65; color: var(--text); }

.product-card__tags { display: flex; flex-wrap: wrap; gap: 8px; margin-top: auto; }

.tag {
  font-size: 13px;
  font-weight: 600;
  color: var(--blue);
  background: #F2F7FF;
  border: 1px solid #D8E5FB;
  padding: 6px 12px;
  border-radius: 100px;
}

.products__note { text-align: center; font-size: 15px; color: var(--muted); margin-top: 40px; }

/* ===== How We Operate ===== */

.operate { background: var(--bg-alt); padding: 96px 0; }

.operate__grid { display: grid; grid-template-columns: repeat(4, 1fr); gap: 20px; }

.operate-card {
  background: #FFFFFF;
  border: 1px solid var(--border);
  border-radius: 16px;
  padding: 28px 24px;
  display: flex;
  flex-direction: column;
  gap: 12px;
}

.operate-card__num {
  width: 40px;
  height: 40px;
  border-radius: 10px;
  background: var(--blue-soft);
  color: var(--blue);
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 15px;
  font-weight: 800;
}

.operate-card__title { font-size: 17px; font-weight: 800; color: var(--navy); }
.operate-card__body { font-size: 14px; line-height: 1.65; color: var(--muted); }

/* ===== Technology ===== */

.tech { padding: 96px 0; }

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

.tech-item {
  border: 1px solid var(--border);
  border-radius: 14px;
  padding: 22px 24px;
  display: flex;
  align-items: center;
  gap: 14px;
}

.tech-item::before {
  content: "";
  width: 8px;
  height: 8px;
  border-radius: 50%;
  background: var(--blue);
  flex-shrink: 0;
}

.tech-item span { font-size: 15px; font-weight: 700; color: var(--navy); }

/* ===== Company Facts ===== */

.facts { background: var(--navy); padding: 88px 0; }

.facts__grid { display: grid; grid-template-columns: repeat(4, 1fr); gap: 24px; }

.fact { text-align: center; }
.fact__value { font-size: 44px; font-weight: 800; color: #FFFFFF; }
.fact__label { font-size: 14px; font-weight: 600; color: var(--footer-muted); margin-top: 6px; }

.facts__note {
  font-size: 15px;
  line-height: 1.7;
  color: #B9C6DA;
  text-align: center;
  max-width: 760px;
  margin: 40px auto 0;
}

/* ===== Principles ===== */

.principles { padding: 96px 0; }

.principles__grid { display: grid; grid-template-columns: repeat(2, 1fr); gap: 20px; }

.principle-card {
  background: var(--bg-alt);
  border-radius: 16px;
  padding: 28px 30px;
  display: flex;
  flex-direction: column;
  gap: 10px;
}

.principle-card__title { font-size: 18px; font-weight: 800; color: var(--navy); }
.principle-card__body { font-size: 15px; line-height: 1.65; color: var(--muted); }

/* ===== Contact ===== */

.contact { background: var(--bg-alt); padding: 96px 0; }

.contact__inner { display: grid; grid-template-columns: 1fr 1.2fr; gap: 64px; }

.contact__info { display: flex; flex-direction: column; gap: 20px; }
.contact__info > p { margin: 0; font-size: 16px; line-height: 1.7; color: var(--text); }

.contact__details {
  display: flex;
  flex-direction: column;
  gap: 6px;
  font-size: 15px;
  line-height: 1.7;
  color: var(--text);
  border-top: 1px solid var(--border-strong);
  padding-top: 20px;
}

.contact__details strong { font-weight: 800; color: var(--navy); }

.contact__card {
  background: #FFFFFF;
  border: 1px solid var(--border);
  border-radius: 18px;
  padding: 36px;
  box-shadow: 0 4px 24px rgba(11, 27, 51, 0.06);
}

.contact-form { display: flex; flex-direction: column; gap: 18px; }

.contact-form__row { display: grid; grid-template-columns: 1fr 1fr; gap: 16px; }

.contact-form label {
  display: flex;
  flex-direction: column;
  gap: 6px;
  font-size: 13px;
  font-weight: 700;
  color: var(--text);
}

.contact-form input[type="text"],
.contact-form input[type="email"],
.contact-form textarea {
  font-family: 'Manrope', sans-serif;
  font-size: 15px;
  padding: 12px 14px;
  border: 1px solid var(--border-strong);
  border-radius: 10px;
  outline: none;
  color: var(--navy);
}

.contact-form input:focus,
.contact-form textarea:focus { border-color: var(--blue); }

.contact-form textarea { resize: vertical; }

.contact-form__consent {
  flex-direction: row !important;
  gap: 10px !important;
  align-items: flex-start;
  font-size: 13px !important;
  font-weight: 400 !important;
  line-height: 1.6;
  color: var(--muted) !important;
  cursor: pointer;
}

.contact-form__consent input { margin-top: 3px; accent-color: var(--blue); }

.contact-form__error {
  display: none;
  font-size: 13px;
  font-weight: 600;
  color: #B4232A;
  background: #FDEFEF;
  border: 1px solid #F3C8CA;
  border-radius: 8px;
  padding: 10px 14px;
}
.contact-form__error.is-visible { display: block; }

.contact-form button {
  font-family: 'Manrope', sans-serif;
  background: var(--blue);
  color: #FFFFFF;
  font-size: 16px;
  font-weight: 700;
  padding: 14px;
  border: none;
  border-radius: 10px;
  cursor: pointer;
}
.contact-form button:hover { background: var(--blue-dark); }

.contact-form__success {
  display: none;
  flex-direction: column;
  align-items: center;
  gap: 12px;
  text-align: center;
  padding: 48px 0;
}
.contact-form__success.is-visible { display: flex; }

.contact-form__success-icon {
  width: 52px;
  height: 52px;
  border-radius: 50%;
  background: #E8F5EC;
  color: #1F8A5B;
  font-size: 24px;
  display: flex;
  align-items: center;
  justify-content: center;
}

.contact-form__success-title { font-size: 20px; font-weight: 800; color: var(--navy); }
.contact-form__success-note { font-size: 15px; color: var(--muted); }

/* ===== Footer ===== */

.site-footer { background: var(--navy); padding: 64px 0 40px; }

.site-footer__grid { display: grid; grid-template-columns: 1.4fr 1fr 1fr; gap: 48px; }

.site-footer__brand { display: flex; flex-direction: column; gap: 14px; }
.site-footer__logo { font-size: 19px; font-weight: 800; color: #FFFFFF; }
.site-footer__logo span { color: #7FA8F5; }
.site-footer__tagline { font-size: 14px; line-height: 1.7; color: var(--footer-muted); }
.site-footer__group-note { font-size: 13px; line-height: 1.7; color: var(--footer-faint); }

.site-footer__col { display: flex; flex-direction: column; gap: 10px; }

.site-footer__heading {
  font-size: 13px;
  font-weight: 700;
  color: #FFFFFF;
  letter-spacing: 0.08em;
  text-transform: uppercase;
}

.site-footer__col a { font-size: 14px; color: var(--footer-muted); }
.site-footer__col a:hover { color: #FFFFFF; }
.site-footer__col div { font-size: 14px; color: var(--footer-muted); line-height: 1.6; }

.site-footer__legal {
  border-top: 1px solid rgba(255, 255, 255, 0.1);
  padding-top: 24px;
  margin-top: 40px;
  font-size: 13px;
  color: var(--footer-faint);
}

/* Compact footer (legal pages) */
.site-footer--compact { padding: 40px 0; }

.site-footer--compact .site-footer__row {
  display: flex;
  justify-content: space-between;
  align-items: center;
  flex-wrap: wrap;
  gap: 16px;
}

.site-footer--compact .site-footer__copyright { font-size: 13px; color: var(--footer-faint); }
.site-footer--compact .site-footer__links { display: flex; gap: 24px; }
.site-footer--compact .site-footer__links a { font-size: 13px; color: var(--footer-muted); }
.site-footer--compact .site-footer__links a:hover { color: #FFFFFF; }

/* ===== Legal pages ===== */

.legal {
  max-width: 760px;
  margin: 0 auto;
  padding: 72px 32px 96px;
  display: flex;
  flex-direction: column;
  gap: 28px;
}

.legal__head {
  display: flex;
  flex-direction: column;
  gap: 12px;
  border-bottom: 1px solid var(--border-faint);
  padding-bottom: 28px;
}

.legal__head h1 {
  margin: 0;
  font-size: clamp(30px, 6vw, 40px);
  font-weight: 800;
  letter-spacing: -0.02em;
}

.legal__updated { font-size: 14px; color: var(--faint); }

.legal p { margin: 0; font-size: 16px; line-height: 1.75; color: var(--text); }

.legal section { display: flex; flex-direction: column; gap: 10px; }

.legal h2 {
  margin: 12px 0 0;
  font-size: 22px;
  font-weight: 800;
  letter-spacing: -0.01em;
  color: var(--navy);
}

.legal ul {
  margin: 4px 0 0;
  padding-left: 22px;
  display: flex;
  flex-direction: column;
  gap: 6px;
}

.legal li { font-size: 16px; line-height: 1.7; color: var(--text); }

/* ===== Responsive ===== */

@media (max-width: 960px) {
  .nav-toggle { display: flex; }

  .site-nav {
    display: none;
    position: absolute;
    top: 100%;
    left: 0;
    right: 0;
    flex-direction: column;
    align-items: stretch;
    gap: 0;
    background: #FFFFFF;
    border-bottom: 1px solid var(--border-faint);
    box-shadow: 0 16px 40px rgba(11, 27, 51, 0.1);
    padding: 8px 0;
  }

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

  .site-nav a { padding: 14px 32px; font-size: 16px; }

  .site-nav .btn-primary {
    margin: 8px 32px 12px;
    text-align: center;
    border-radius: 10px;
  }

  .hero__inner {
    grid-template-columns: 1fr;
    gap: 40px;
    padding: 56px 32px 64px;
  }

  .hero__visual { height: auto; overflow: visible; }

  .browser-frame { position: static; width: 100%; }

  .structure__inner { grid-template-columns: 1fr; gap: 48px; }

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

  .operate__grid { grid-template-columns: repeat(2, 1fr); }

  .tech__grid { grid-template-columns: repeat(2, 1fr); }

  .facts__grid { grid-template-columns: repeat(2, 1fr); gap: 36px 24px; }

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

  .contact__inner { grid-template-columns: 1fr; gap: 48px; }

  .site-footer__grid { grid-template-columns: 1fr; gap: 36px; }
}

@media (max-width: 640px) {
  .about, .legal { padding-left: 24px; padding-right: 24px; }
  .container { padding: 0 24px; }
  .site-header__inner { padding: 14px 24px; }
  .hero__inner { padding: 48px 24px 56px; }

  .about, .products, .operate, .tech, .principles, .contact { padding-top: 72px; padding-bottom: 72px; }
  .structure { padding: 72px 0; }
  .facts { padding: 72px 0; }

  .operate__grid { grid-template-columns: 1fr; }
  .tech__grid { grid-template-columns: 1fr; }

  .contact-form__row { grid-template-columns: 1fr; }
  .contact__card { padding: 28px 22px; }

  .fact__value { font-size: 36px; }

  .hero__actions .btn-primary--lg,
  .hero__actions .btn-secondary { width: 100%; text-align: center; }
}