/* BuildNex – Core Styles */

/* Colour variables */
:root {
  --bn-primary: #0D1F63;   /* Deep Navy */
  --bn-secondary: #0E4C8C; /* Royal Blue */
  --bn-accent: #6A9FCF;    /* Light Steel Blue */
  --bn-bg-light: #F2F4F7;
  --bn-text-main: #1A1A1A;
  --bn-text-muted: #4A4A4A;
  --bn-white: #FFFFFF;
}

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

body {
  margin: 0;
  font-family: system-ui, -apple-system, BlinkMacSystemFont, "Segoe UI", "Inter", sans-serif;
  color: var(--bn-text-main);
  background: var(--bn-white);
}

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

/* Typography */

h1, h2, h3, h4, h5 {
  font-family: "Montserrat", system-ui, -apple-system, BlinkMacSystemFont, "Segoe UI", sans-serif;
  color: var(--bn-primary);
  margin-top: 0;
}

p {
  color: var(--bn-text-muted);
  line-height: 1.6;
  margin-top: 0;
}

a {
  color: var(--bn-secondary);
  text-decoration: none;
}

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

/* Layout */

.container {
  max-width: 1200px;
  margin: 0 auto;
  padding: 0 20px;
}

section {
  padding: 80px 0;
}

@media (max-width: 768px) {
  section {
    padding: 48px 0;
  }
}

/* Grid helpers */

.grid-2 {
  display: grid;
  grid-template-columns: repeat(2, minmax(0, 1fr));
  gap: 40px;
}

.grid-3 {
  display: grid;
  grid-template-columns: repeat(3, minmax(0, 1fr));
  gap: 30px;
}

.grid-4 {
  display: grid;
  grid-template-columns: repeat(4, minmax(0, 1fr));
  gap: 30px;
}

@media (max-width: 900px) {
  .grid-4,
  .grid-3,
  .grid-2 {
    grid-template-columns: 1fr;
  }
}

/* Cards */

.card {
  background: var(--bn-white);
  border-radius: 10px;
  padding: 24px;
  box-shadow: 0 1px 4px rgba(0,0,0,0.06);
}

/* Buttons */

.btn-primary,
.btn-outline {
  display: inline-block;
  font-family: "Montserrat", system-ui, -apple-system, BlinkMacSystemFont, "Segoe UI", sans-serif;
  font-weight: 600;
  border-radius: 6px;
  cursor: pointer;
  transition: background 0.2s ease, color 0.2s ease, border-color 0.2s ease;
}

.btn-primary {
  background: var(--bn-secondary);
  color: #FFFFFF !important;
  padding: 14px 28px;
  border: none;
}

.btn-primary:hover {
  background: var(--bn-accent);
  color: var(--bn-white);
}

.btn-outline {
  padding: 12px 26px;
  border: 2px solid var(--bn-primary);
  color: var(--bn-primary);
  background: transparent;
}

.btn-outline:hover {
  background: var(--bn-primary);
  color: var(--bn-white);
}

/* HEADER */

.top-bar {
  background: var(--bn-primary);
  color: var(--bn-white);
  font-size: 13px;
  padding: 6px 0;
}

.top-bar-inner {
  display: flex;
  justify-content: space-between;
  align-items: center;
}

.top-bar-inner span {
  opacity: 0.9;
}

.header {
  background: var(--bn-white);
  border-bottom: 1px solid #E5E7EB;
  position: sticky;
  top: 0;
  z-index: 100;
}

.header-inner {
  display: flex;
  align-items: center;
  justify-content: space-between;
  padding: 16px 20px;
}

.header-logo {
  font-family: "Montserrat", system-ui, -apple-system, BlinkMacSystemFont, "Segoe UI", sans-serif;
  font-weight: 700;
  font-size: 22px;
  color: var(--bn-primary);
}

.header-logo span {
  color: var(--bn-secondary);
}

.nav {
  display: flex;
  align-items: center;
  gap: 24px;
}

.nav a {
  font-family: "Montserrat", system-ui, -apple-system, BlinkMacSystemFont, "Segoe UI", sans-serif;
  font-weight: 500;
  font-size: 15px;
  color: var(--bn-text-main);
}

.nav a:hover {
  color: var(--bn-secondary);
}

/* Shift Home and Services slightly to the right for alignment */
.nav-inner a[href="index.html"],
.nav-item-has-children {
  margin-left: 16px;
}

.nav .nav-cta {
  margin-left: 12px;
}

/* Dropdown for Services */

.nav-item-has-children {
  position: relative;
}

.nav-item-has-children > button {
  background: none;
  border: none;
  padding: 0;
  font: inherit;
  color: var(--bn-text-main);
  cursor: pointer;
  display: flex;
  align-items: center;
  gap: 4px;
}

.nav-item-has-children > button:hover {
  color: var(--bn-secondary);
}

/* Add vertical separators between specific nav links */
.nav-inner a.separator {
  position: relative;
  padding-left: 16px;
  margin-left: 16px;
}

.nav-inner a.separator::before {
  content: "";
  position: absolute;
  left: 0;
  top: 50%;
  transform: translateY(-50%);
  height: 18px;
  width: 1px;
  background-color: #999; /* adjust colour if needed */
}

.submenu {
  position: absolute;
  top: 130%;
  left: 0;
  background: var(--bn-white);
  box-shadow: 0 4px 12px rgba(0,0,0,0.08);
  border-radius: 8px;
  padding: 10px 0;
  display: none;
  min-width: 220px;
  z-index: 200;
}

.submenu a {
  display: block;
  padding: 8px 16px;
  font-size: 14px;
  color: var(--bn-text-main);
}

.submenu a:hover {
  background: var(--bn-bg-light);
  color: var(--bn-secondary);
}

.nav-item-has-children.open .submenu {
  display: block;
}

/* Mobile nav */

.nav-toggle {
  display: none;
  background: none;
  border: none;
  font-size: 24px;
  cursor: pointer;
}

@media (max-width: 900px) {
  .nav {
    position: fixed;
    inset: 0;
    background: rgba(0,0,0,0.4);
    justify-content: flex-end;
    padding: 0;
    display: none;
  }

  .nav.open {
    display: flex;
  }

  .nav-inner {
    background: var(--bn-white);
    width: 260px;
    padding: 24px 20px;
    display: flex;
    flex-direction: column;
    gap: 16px;
  }

  .nav a,
  .nav-item-has-children > button {
    font-size: 16px;
  }

  .nav-toggle {
    display: block;
  }

  .nav-cta {
    margin-top: 16px;
  }

  .submenu {
    position: static;
    box-shadow: none;
    border-radius: 0;
  }
}

/* HERO */

.hero {
  padding: 80px 0 60px;
}

.hero-title {
  font-size: 42px;
  font-weight: 700;
}

.hero-subtitle {
  font-size: 20px;
  margin-top: 12px;
}

/* Trust band */

.trust-band {
  background: var(--bn-primary);
  color: var(--bn-white);
  padding: 16px 0;
  font-size: 14px;
}

.trust-row {
  display: flex;
  flex-wrap: wrap;
  gap: 12px 24px;
  justify-content: space-between;
}

@media (max-width: 768px) {
  .trust-row {
    flex-direction: column;
  }
}

/* Sections */

.section-navy {
  background: var(--bn-primary);
  color: var(--bn-white);
}

.section-navy h2,
.section-navy h3 {
  color: var(--bn-white);
}

.section-light {
  background: var(--bn-bg-light);
}

/* Lists */

ul {
  padding-left: 18px;
}

/* Footer */

footer {
  background: var(--bn-primary);
  color: #FFFFFF !important;
  padding: 60px 0 30px;
  font-size: 14px;
}

footer p,
footer a,
footer h3,
footer h4 {
  color: #FFFFFF !important;
}


.footer-top {
  display: grid;
  grid-template-columns: 2fr 1.5fr 1.5fr;
  gap: 40px;
  margin-bottom: 30px;
}

.footer-bottom {
  border-top: 1px solid rgba(255,255,255,0.15);
  padding-top: 20px;
  display: flex;
  justify-content: space-between;
  gap: 16px;
}

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

.footer-links li {
  margin-bottom: 6px;
}

.footer-links a {
  color: var(--bn-white);
}

.footer-links a:hover {
  color: var(--bn-accent);
}

@media (max-width: 900px) {
  .footer-top {
    grid-template-columns: 1fr;
  }

  .footer-bottom {
    flex-direction: column;
  }
}

/* Forms */

form {
  display: grid;
  gap: 16px;
}

.form-row-2 {
  display: grid;
  grid-template-columns: repeat(2, minmax(0, 1fr));
  gap: 16px;
}

label {
  display: block;
  font-weight: 500;
  margin-bottom: 4px;
}

input, select, textarea {
  width: 100%;
  padding: 10px 12px;
  border-radius: 6px;
  border: 1px solid #D1D5DB;
  font: inherit;
}

textarea {
  min-height: 120px;
  resize: vertical;
}

@media (max-width: 768px) {
  .form-row-2 {
    grid-template-columns: 1fr;
  }
}