/* ============================================================
   MELLONE — SHARED STYLESHEET
   Brand: Sora typeface · Blue monochromatic palette
   ============================================================ */

/* ---------- GOOGLE FONTS ---------- */
@import url('https://fonts.googleapis.com/css2?family=Sora:wght@300;400;500;600;700;800&display=swap');

/* ---------- CSS VARIABLES ---------- */
:root {
  --deep-blue:  #1A1AE6;
  --mid-blue:   #3333CC;
  --periwinkle: #7B7BE8;
  --pale-blue:  #A0A0F5;
  --off-white:  #F4F4FB;
  --dark-navy:  #1C1C2E;
  --mid-gray:   #4A4A6A;
  --white:      #ffffff;
  --border:     #E0E0F0;

  --radius-sm:  6px;
  --radius-md:  8px;
  --radius-lg:  12px;
  --radius-xl:  16px;

  --shadow-nav: 0 1px 16px rgba(26, 26, 230, 0.06);
  --shadow-card: 0 2px 16px rgba(28, 28, 46, 0.07);

  --max-width: 1200px;
  --section-padding: 96px 64px;
  --section-padding-sm: 64px 32px;
}

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

html {
  scroll-behavior: smooth;
  font-size: 16px;
}

body {
  font-family: 'Sora', sans-serif;
  background: var(--white);
  color: var(--dark-navy);
  line-height: 1.6;
  -webkit-font-smoothing: antialiased;
}

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

a {
  color: inherit;
  text-decoration: none;
}

ul {
  list-style: none;
}

/* ---------- TYPOGRAPHY SCALE ---------- */
.hero-title {
  font-size: clamp(40px, 5vw, 60px);
  font-weight: 800;
  line-height: 1.06;
  letter-spacing: -0.03em;
  color: var(--deep-blue);
}

.hero-title--white { color: white; }

h1, .h1 {
  font-size: clamp(32px, 3.5vw, 42px);
  font-weight: 700;
  line-height: 1.15;
  letter-spacing: -0.025em;
  color: var(--deep-blue);
}

h2, .h2 {
  font-size: clamp(26px, 2.5vw, 34px);
  font-weight: 700;
  line-height: 1.2;
  letter-spacing: -0.02em;
  color: var(--dark-navy);
}

h3, .h3 {
  font-size: clamp(18px, 1.8vw, 22px);
  font-weight: 700;
  line-height: 1.3;
  color: var(--mid-blue);
}

h4, .h4 {
  font-size: 16px;
  font-weight: 700;
  color: var(--dark-navy);
}

.body-lg {
  font-size: 17px;
  line-height: 1.72;
  color: var(--mid-gray);
}

.body-md {
  font-size: 15px;
  line-height: 1.68;
  color: var(--mid-gray);
}

.body-sm {
  font-size: 13px;
  line-height: 1.6;
  color: var(--mid-gray);
}

.eyebrow {
  font-size: 10px;
  font-weight: 700;
  letter-spacing: 0.22em;
  text-transform: uppercase;
  color: var(--periwinkle);
  display: block;
  margin-bottom: 14px;
}

.eyebrow--white { color: rgba(255,255,255,0.7); }
.eyebrow--pale  { color: var(--pale-blue); }

/* ---------- LAYOUT UTILITIES ---------- */
.container {
  max-width: var(--max-width);
  margin: 0 auto;
  padding: 0 64px;
}

.section {
  padding: var(--section-padding);
  max-width: var(--max-width);
  margin: 0 auto;
}

.section--full {
  padding: var(--section-padding);
}

.grid-2 {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 64px;
}

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

.grid-4 {
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  gap: 16px;
}

/* ---------- BUTTONS ---------- */
.btn {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  font-family: 'Sora', sans-serif;
  font-size: 14px;
  font-weight: 700;
  padding: 13px 28px;
  border-radius: var(--radius-md);
  border: none;
  cursor: pointer;
  transition: background 0.15s, color 0.15s, border-color 0.15s, transform 0.1s;
  white-space: nowrap;
  text-decoration: none;
}

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

.btn-primary {
  background: var(--deep-blue);
  color: white;
  border: 2px solid var(--deep-blue);
}

.btn-primary:hover {
  background: var(--mid-blue);
  border-color: var(--mid-blue);
}

.btn-secondary {
  background: transparent;
  color: var(--deep-blue);
  border: 2px solid var(--deep-blue);
}

.btn-secondary:hover {
  background: var(--deep-blue);
  color: white;
}

.btn-white {
  background: white;
  color: var(--deep-blue);
  border: 2px solid white;
}

.btn-white:hover {
  background: var(--off-white);
}

.btn-ghost-white {
  background: rgba(255,255,255,0.12);
  color: white;
  border: 2px solid rgba(255,255,255,0.25);
}

.btn-ghost-white:hover {
  background: rgba(255,255,255,0.22);
}

.btn-white-periwinkle {
  background: white;
  color: var(--periwinkle);
  border: 2px solid white;
}

.btn-white-periwinkle:hover {
  background: var(--off-white);
}

.btn-lg {
  font-size: 15px;
  padding: 15px 36px;
}

/* ---------- NAVIGATION ---------- */
.nav {
  background: var(--white);
  border-bottom: 1px solid var(--border);
  height: 68px;
  display: flex;
  align-items: center;
  justify-content: space-between;
  padding: 0 64px;
  position: sticky;
  top: 0;
  z-index: 100;
  box-shadow: var(--shadow-nav);
}

.nav-logo {
  display: flex;
  align-items: center;
  flex-shrink: 0;
}

.nav-logo img {
  height: 52px;
  width: auto;
}

.nav-links {
  display: flex;
  align-items: center;
  gap: 4px;
}

.nav-link {
  font-size: 14px;
  font-weight: 500;
  color: var(--mid-gray);
  padding: 8px 14px;
  border-radius: var(--radius-sm);
  cursor: pointer;
  transition: color 0.15s, background 0.15s;
  white-space: nowrap;
  text-decoration: none;
}

.nav-link:hover {
  color: var(--deep-blue);
  background: rgba(26,26,230,0.05);
}

.nav-link.active {
  color: var(--deep-blue);
  font-weight: 600;
}

/* Dropdown */
.nav-dropdown {
  position: relative;
}

.nav-dropdown-toggle {
  display: flex;
  align-items: center;
  gap: 5px;
  font-size: 14px;
  font-weight: 500;
  color: var(--mid-gray);
  padding: 8px 14px;
  border-radius: var(--radius-sm);
  cursor: pointer;
  transition: color 0.15s, background 0.15s;
  background: none;
  border: none;
  font-family: 'Sora', sans-serif;
  white-space: nowrap;
}

.nav-dropdown-toggle:hover,
.nav-dropdown:hover .nav-dropdown-toggle {
  color: var(--deep-blue);
  background: rgba(26,26,230,0.05);
}

.nav-dropdown-toggle svg {
  width: 12px;
  height: 12px;
  transition: transform 0.2s;
}

.nav-dropdown:hover .nav-dropdown-toggle svg {
  transform: rotate(180deg);
}

.nav-dropdown-menu {
  position: absolute;
  top: calc(100% + 8px);
  left: 0;
  background: white;
  border: 1px solid var(--border);
  border-radius: var(--radius-lg);
  box-shadow: 0 8px 32px rgba(28,28,46,0.12);
  min-width: 200px;
  padding: 8px;
  opacity: 0;
  visibility: hidden;
  transform: translateY(-8px);
  transition: opacity 0.15s, visibility 0.15s, transform 0.15s;
  z-index: 200;
}

.nav-dropdown:hover .nav-dropdown-menu {
  opacity: 1;
  visibility: visible;
  transform: translateY(0);
}

.nav-dropdown-item {
  display: block;
  padding: 10px 14px;
  border-radius: var(--radius-sm);
  font-size: 13px;
  font-weight: 500;
  color: var(--dark-navy);
  transition: background 0.12s, color 0.12s;
  text-decoration: none;
}

.nav-dropdown-item:hover {
  background: var(--off-white);
  color: var(--deep-blue);
}

.nav-dropdown-item-label {
  font-size: 11px;
  font-weight: 600;
  letter-spacing: 0.1em;
  text-transform: uppercase;
  color: var(--mid-gray);
  padding: 6px 14px 4px;
  display: block;
}

.nav-right {
  display: flex;
  align-items: center;
  gap: 12px;
  flex-shrink: 0;
}

.nav-cta {
  background: var(--deep-blue);
  color: white;
  font-family: 'Sora', sans-serif;
  font-size: 14px;
  font-weight: 600;
  padding: 10px 22px;
  border-radius: 7px;
  border: none;
  cursor: pointer;
  transition: background 0.15s;
  text-decoration: none;
  display: inline-block;
  white-space: nowrap;
}

.nav-cta:hover {
  background: var(--mid-blue);
}

/* Mobile hamburger */
.nav-hamburger {
  display: none;
  flex-direction: column;
  gap: 5px;
  background: none;
  border: none;
  cursor: pointer;
  padding: 4px;
}

.nav-hamburger span {
  display: block;
  width: 22px;
  height: 2px;
  background: var(--dark-navy);
  border-radius: 2px;
  transition: all 0.2s;
}

/* ---------- FOOTER ---------- */
.footer {
  background: var(--dark-navy);
  padding: 56px 64px;
}

.footer-inner {
  max-width: var(--max-width);
  margin: 0 auto;
}

.footer-top {
  display: grid;
  grid-template-columns: 2fr 1fr 1fr 1fr;
  gap: 48px;
  padding-bottom: 40px;
  border-bottom: 1px solid rgba(255,255,255,0.08);
  margin-bottom: 28px;
}

.footer-brand {}

.footer-logo-wrap {
  display: flex;
  align-items: center;
  margin-bottom: 16px;
}

.footer-logo-img {
  background: white;
  border-radius: var(--radius-sm);
  padding: 5px 10px;
  display: inline-flex;
  align-items: center;
}

.footer-logo-img img {
  height: 28px;
  width: auto;
}

.footer-tagline {
  font-size: 13px;
  color: rgba(255,255,255,0.38);
  line-height: 1.65;
  max-width: 230px;
}

.footer-col-title {
  font-size: 11px;
  font-weight: 700;
  letter-spacing: 0.14em;
  text-transform: uppercase;
  color: rgba(255,255,255,0.28);
  margin-bottom: 16px;
}

.footer-link {
  display: block;
  font-size: 13px;
  color: rgba(255,255,255,0.48);
  margin-bottom: 10px;
  transition: color 0.15s;
  text-decoration: none;
}

.footer-link:hover {
  color: rgba(255,255,255,0.8);
}

.footer-bottom {
  display: flex;
  align-items: center;
  justify-content: space-between;
  flex-wrap: wrap;
  gap: 12px;
}

.footer-copy {
  font-size: 12px;
  color: rgba(255,255,255,0.22);
}

.footer-legal {
  display: flex;
  gap: 18px;
}

.footer-legal a {
  font-size: 12px;
  color: rgba(255,255,255,0.22);
  text-decoration: none;
  transition: color 0.15s;
}

.footer-legal a:hover {
  color: rgba(255,255,255,0.5);
}

/* ---------- BREADCRUMB ---------- */
.breadcrumb-bar {
  background: var(--off-white);
  border-bottom: 1px solid var(--border);
  padding: 12px 64px;
  display: flex;
  align-items: center;
  gap: 8px;
  font-size: 12px;
  color: var(--mid-gray);
}

.bc-link {
  color: var(--periwinkle);
  font-weight: 600;
  text-decoration: none;
  transition: color 0.12s;
}

.bc-link:hover { color: var(--deep-blue); }

.bc-sep { color: var(--border); }

.bc-current {
  color: var(--dark-navy);
  font-weight: 600;
}

/* ---------- STATS STRIP ---------- */
.stats-strip {
  display: flex;
  border-bottom: 1px solid var(--border);
  border-top: 1px solid var(--border);
}

.stat-cell {
  flex: 1;
  padding: 22px 28px;
  display: flex;
  gap: 12px;
  align-items: center;
  border-right: 1px solid var(--border);
}

.stat-cell:last-child { border-right: none; }

.stat-icon { font-size: 20px; flex-shrink: 0; }

.stat-num {
  font-size: 19px;
  font-weight: 800;
  line-height: 1;
  margin-bottom: 3px;
}

.stat-lbl {
  font-size: 10px;
  font-weight: 600;
  letter-spacing: 0.1em;
  text-transform: uppercase;
  color: var(--mid-gray);
}

/* ---------- CARDS ---------- */
.card {
  background: var(--off-white);
  border: 1px solid var(--border);
  border-radius: var(--radius-lg);
  padding: 24px;
}

.card--white {
  background: white;
  border: 1px solid var(--border);
  border-radius: var(--radius-lg);
  padding: 24px;
  box-shadow: var(--shadow-card);
}

/* ---------- SECTION BACKGROUNDS ---------- */
.bg-white    { background: var(--white); }
.bg-offwhite { background: var(--off-white); }
.bg-navy     { background: var(--dark-navy); }
.bg-deepblue { background: var(--deep-blue); }
.bg-periwinkle { background: var(--periwinkle); }

/* ---------- COLOUR UTILITIES ---------- */
.text-deep-blue  { color: var(--deep-blue); }
.text-mid-blue   { color: var(--mid-blue); }
.text-periwinkle { color: var(--periwinkle); }
.text-pale-blue  { color: var(--pale-blue); }
.text-white      { color: white; }
.text-navy       { color: var(--dark-navy); }
.text-gray       { color: var(--mid-gray); }

/* ---------- DIVIDERS ---------- */
.divider {
  border: none;
  border-top: 1px solid var(--border);
}

/* ---------- FEATURE LIST ---------- */
.feature-list {
  display: flex;
  flex-direction: column;
  gap: 10px;
  margin-top: 20px;
}

.feature-item {
  display: flex;
  align-items: flex-start;
  gap: 10px;
  font-size: 14px;
  color: var(--mid-gray);
  line-height: 1.5;
}

.feature-item::before {
  content: '✓';
  color: var(--deep-blue);
  font-weight: 700;
  flex-shrink: 0;
  margin-top: 1px;
}

/* ---------- SECTION HEADER (centred) ---------- */
.section-header {
  text-align: center;
  max-width: 680px;
  margin: 0 auto 56px;
}

.section-header h2 {
  margin-bottom: 14px;
}

/* ---------- CTA SECTION ---------- */
.cta-section {
  background: var(--deep-blue);
  padding: 80px 64px;
  text-align: center;
}

.cta-section h2 {
  color: white;
  margin-bottom: 14px;
}

.cta-section p {
  color: rgba(255,255,255,0.7);
  max-width: 540px;
  margin: 0 auto 36px;
  font-size: 16px;
  line-height: 1.7;
}

.cta-actions {
  display: flex;
  gap: 14px;
  justify-content: center;
  flex-wrap: wrap;
}

/* ---------- TAGS / CHIPS ---------- */
.tag {
  display: inline-block;
  font-size: 11px;
  font-weight: 600;
  letter-spacing: 0.06em;
  padding: 4px 11px;
  border-radius: 20px;
}

.tag--blue {
  background: rgba(26,26,230,0.08);
  color: var(--deep-blue);
  border: 1px solid rgba(26,26,230,0.15);
}

.tag--periwinkle {
  background: rgba(123,123,232,0.1);
  color: var(--periwinkle);
  border: 1px solid rgba(123,123,232,0.2);
}

.tag--navy {
  background: rgba(255,255,255,0.1);
  color: rgba(255,255,255,0.75);
}

/* ============================================================
   RESPONSIVE — TABLET (≤ 1024px)
   ============================================================ */
@media (max-width: 1024px) {
  :root {
    --section-padding: 72px 40px;
  }

  .nav { padding: 0 40px; }
  .footer { padding: 48px 40px; }
  .breadcrumb-bar { padding: 12px 40px; }

  .grid-2 { gap: 40px; }
  .grid-3 { grid-template-columns: 1fr 1fr; gap: 20px; }
  .grid-4 { grid-template-columns: 1fr 1fr; }

  .footer-top {
    grid-template-columns: 1fr 1fr;
    gap: 32px;
  }

  .stats-strip {
    flex-wrap: wrap;
  }

  .stat-cell {
    flex: 1 1 calc(50% - 1px);
    border-bottom: 1px solid var(--border);
  }
}

/* ============================================================
   RESPONSIVE — MOBILE (≤ 768px)
   ============================================================ */
@media (max-width: 768px) {
  :root {
    --section-padding: 56px 20px;
  }

  /* Nav */
  .nav {
    padding: 0 20px;
    position: sticky;
    top: 0;
  }

  .nav-links,
  .nav-right {
    display: none;
  }

  .nav-hamburger {
    display: flex;
  }

  /* Mobile nav open state */
  .nav.mobile-open .nav-links {
    display: flex;
    flex-direction: column;
    position: fixed;
    top: 68px;
    left: 0;
    right: 0;
    background: white;
    border-bottom: 1px solid var(--border);
    padding: 16px 20px;
    gap: 4px;
    z-index: 99;
    box-shadow: 0 8px 24px rgba(28,28,46,0.1);
  }

  .nav.mobile-open .nav-right {
    display: flex;
    position: fixed;
    top: auto;
    bottom: 0;
    left: 0;
    right: 0;
    padding: 16px 20px;
    background: white;
    border-top: 1px solid var(--border);
    z-index: 99;
  }

  .nav.mobile-open .nav-cta {
    width: 100%;
    text-align: center;
  }

  .nav-dropdown-menu {
    display: none;
    position: static;
    opacity: 1;
    visibility: visible;
    transform: none;
    box-shadow: none;
    border: none;
    padding: 0 0 0 14px;
    background: transparent;
  }

  .nav-dropdown.expanded .nav-dropdown-menu {
    display: block;
  }

  .nav-dropdown.expanded .nav-dropdown-toggle svg {
    transform: rotate(180deg);
  }

  /* Align dropdown toggles with nav-links (Blog / Contact) */
  .nav-dropdown-toggle { padding: 8px 14px; }

  /* Layout */
  .grid-2,
  .grid-3,
  .grid-4 {
    grid-template-columns: 1fr;
    gap: 16px;
  }

  .container { padding: 0 20px; }
  .section { padding: 56px 20px; }
  .section--full { padding: 56px 20px; }

  /* Stats */
  .stats-strip { flex-direction: column; }
  .stat-cell { border-right: none; }

  /* Footer */
  .footer { padding: 48px 20px; }

  .footer-top {
    grid-template-columns: 1fr;
    gap: 28px;
  }

  .footer-bottom {
    flex-direction: column;
    align-items: flex-start;
  }

  .footer-tagline { max-width: 100%; }

  /* Breadcrumb */
  .breadcrumb-bar { padding: 12px 20px; }

  /* CTA section */
  .cta-section { padding: 56px 20px; }

  /* ---- TOUCH TARGETS & READABILITY ---- */

  /* Hamburger: min 44×44px tap zone */
  .nav-hamburger {
    min-width: 44px;
    min-height: 44px;
    padding: 11px 8px;
    justify-content: center;
  }

  /* Mobile nav links and dropdown toggles: min 44px tap height */
  .nav.mobile-open .nav-link {
    min-height: 44px;
    display: flex;
    align-items: center;
  }

  .nav.mobile-open .nav-dropdown-toggle {
    min-height: 44px;
  }

  /* Dropdown items inside open mobile nav: min 44px tap height */
  .nav.mobile-open .nav-dropdown-item {
    min-height: 44px;
    padding-top: 12px;
    padding-bottom: 12px;
    display: flex;
    align-items: center;
  }

  /* All buttons: min 44px tap height */
  .btn {
    min-height: 44px;
  }

  /* Form fields: min 44px tap height; 16px font prevents iOS auto-zoom */
  .form-input,
  .form-select,
  .form-textarea {
    min-height: 44px;
    font-size: 16px !important;
  }

  /* Blog filter buttons + article share buttons: min 44px */
  .filter-btn,
  .share-btn {
    min-height: 44px;
  }

  /* Contact page enquiry type-toggle buttons: min 44px */
  .tt-btn {
    min-height: 44px;
  }

  /* Body text: minimum 16px for readability */
  .body-md {
    font-size: 16px;
  }
}

/* ============================================================
   RESPONSIVE — SMALL MOBILE (≤ 480px)
   ============================================================ */
@media (max-width: 480px) {
  .btn-lg {
    font-size: 14px;
    padding: 13px 24px;
  }

  .hero-title {
    font-size: 34px;
  }
}

/* ---------- ANIMATIONS ---------- */
@keyframes fadeUp {
  from { opacity: 0; transform: translateY(16px); }
  to   { opacity: 1; transform: translateY(0); }
}

.animate-fade-up {
  animation: fadeUp 0.45s ease both;
}