/* ============================================================
   Harvardbridge Communications — site stylesheet
   Colour system:
     --ink    #16243D  headings / dark sections
     --teal   #0E9594  Technology stream accent
     --amber  #D98E2B  Training & Education stream accent
     --paper  #FAFAF8  page background
   Edit colours here once and they change site-wide.
   ============================================================ */

:root {
  --ink: #16243D;
  --ink-soft: #24365A;
  --body: #4A5568;
  --paper: #FAFAF8;
  --white: #FFFFFF;
  --border: #E5E8EE;
  --teal: #0E9594;
  --teal-dark: #0B7A79;
  --teal-tint: #E8F5F5;
  --amber: #D98E2B;
  --amber-dark: #B87621;
  --amber-tint: #FBF2E3;
  --purple: #5F4BB6;
  --purple-dark: #4A3A92;
  --purple-tint: #EEEBF9;
  --radius: 12px;
  --shadow: 0 6px 24px rgba(22, 36, 61, 0.08);
  --font-display: "Space Grotesk", "Segoe UI", Arial, sans-serif;
  --font-body: "Inter", "Segoe UI", Arial, sans-serif;
}

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

html { scroll-behavior: smooth; }
@media (prefers-reduced-motion: reduce) {
  html { scroll-behavior: auto; }
  *, *::before, *::after { animation: none !important; transition: none !important; }
}

body {
  font-family: var(--font-body);
  font-size: 1.0625rem;
  line-height: 1.65;
  color: var(--body);
  background: var(--paper);
  -webkit-font-smoothing: antialiased;
}

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

.container { width: min(1120px, 92%); margin: 0 auto; }

h1, h2, h3, h4 {
  font-family: var(--font-display);
  color: var(--ink);
  line-height: 1.15;
  letter-spacing: -0.01em;
}
h1 { font-size: clamp(2.1rem, 5vw, 3.4rem); font-weight: 700; }
h2 { font-size: clamp(1.6rem, 3.5vw, 2.3rem); font-weight: 700; }
h3 { font-size: 1.25rem; font-weight: 600; }
p + p { margin-top: 1em; }

a { color: var(--purple-dark); }
a:focus-visible, button:focus-visible {
  outline: 3px solid var(--purple);
  outline-offset: 3px;
  border-radius: 4px;
}

/* Eyebrow labels — colour marks which business stream a section belongs to */
.eyebrow {
  display: inline-block;
  font-family: var(--font-display);
  font-size: 0.8rem;
  font-weight: 600;
  letter-spacing: 0.14em;
  text-transform: uppercase;
  margin-bottom: 0.75rem;
}
.eyebrow--teal  { color: var(--teal-dark); }
.eyebrow--amber { color: var(--amber-dark); }
.eyebrow--light { color: rgba(255,255,255,0.85); }

/* ---------- Header ---------- */
.site-header {
  position: sticky;
  top: 0;
  z-index: 50;
  background: rgba(250, 250, 248, 0.92);
  backdrop-filter: blur(8px);
  border-bottom: 1px solid var(--border);
}
.site-header .container {
  display: flex;
  align-items: center;
  justify-content: space-between;
  min-height: 76px;
  gap: 1rem;
}
.logo { display: flex; align-items: center; gap: 0.65rem; text-decoration: none; }
.logo img { height: 44px; width: auto; }

.main-nav ul { display: flex; gap: 1.6rem; list-style: none; align-items: center; }
.main-nav a {
  font-family: var(--font-display);
  font-size: 0.95rem;
  font-weight: 500;
  color: var(--ink);
  text-decoration: none;
  padding: 0.4rem 0;
  border-bottom: 2px solid transparent;
}
.main-nav a:hover { border-bottom-color: var(--purple); }
.main-nav a[aria-current="page"] { border-bottom-color: var(--amber); }
.main-nav .nav-cta {
  background: var(--ink);
  color: var(--white);
  padding: 0.6rem 1.2rem;
  border-radius: 999px;
  border-bottom: none;
}
.main-nav .nav-cta:hover { background: var(--purple); }

.nav-toggle {
  display: none;
  background: none;
  border: none;
  cursor: pointer;
  padding: 0.5rem;
}
.nav-toggle span {
  display: block;
  width: 26px; height: 3px;
  background: var(--ink);
  margin: 5px 0;
  border-radius: 2px;
  transition: transform 0.2s ease, opacity 0.2s ease;
}

@media (max-width: 860px) {
  .nav-toggle { display: block; }
  .main-nav {
    position: absolute;
    top: 100%; left: 0; right: 0;
    background: var(--white);
    border-bottom: 1px solid var(--border);
    display: none;
    box-shadow: var(--shadow);
  }
  .main-nav.open { display: block; }
  .main-nav ul { flex-direction: column; gap: 0; padding: 0.5rem 0; }
  .main-nav li { width: 100%; text-align: center; }
  .main-nav a { display: block; padding: 0.9rem 1rem; border-bottom: none; }
  .main-nav .nav-cta { margin: 0.6rem auto; display: inline-block; }
}

/* ---------- Buttons ---------- */
.btn {
  display: inline-block;
  font-family: var(--font-display);
  font-weight: 600;
  font-size: 1rem;
  text-decoration: none;
  border-radius: 999px;
  padding: 0.85rem 1.9rem;
  border: 2px solid transparent;
  cursor: pointer;
  transition: background 0.15s ease, color 0.15s ease;
}
.btn--primary { background: var(--purple); color: var(--white); }
.btn--primary:hover { background: var(--purple-dark); }
.btn--amber { background: var(--amber); color: var(--white); }
.btn--amber:hover { background: var(--amber-dark); }
.btn--ghost { background: transparent; color: var(--white); border-color: rgba(255,255,255,0.6); }
.btn--ghost:hover { border-color: var(--white); background: rgba(255,255,255,0.08); }
.btn--ink { background: var(--ink); color: var(--white); }
.btn--ink:hover { background: var(--purple-dark); }

/* ---------- Hero ---------- */
.hero {
  background: linear-gradient(160deg, var(--ink) 0%, #1C3050 60%, #21456B 100%);
  color: #DCE3EF;
  padding: clamp(3.5rem, 8vw, 6.5rem) 0;
  overflow: hidden;
}
.hero .container {
  display: grid;
  grid-template-columns: 1.1fr 0.9fr;
  gap: 3rem;
  align-items: center;
}
.hero h1 { color: var(--white); margin-bottom: 1.1rem; }
.hero p.lead { font-size: 1.15rem; max-width: 34em; }
.hero-actions { display: flex; flex-wrap: wrap; gap: 0.9rem; margin-top: 1.8rem; }
.hero-art { justify-self: center; width: 100%; max-width: 440px; }
@media (max-width: 860px) {
  .hero .container { grid-template-columns: 1fr; }
  .hero-art { max-width: 340px; order: -1; }
}

/* Page hero (inner pages) */
.page-hero {
  background: linear-gradient(160deg, var(--ink) 0%, #1C3050 100%);
  color: #DCE3EF;
  padding: clamp(2.5rem, 6vw, 4rem) 0;
}
.page-hero h1 { color: var(--white); margin-bottom: 0.6rem; }
.page-hero p { max-width: 46em; font-size: 1.1rem; }
.page-hero--amber { background: linear-gradient(160deg, #2E2410 0%, var(--ink) 85%); }

/* ---------- Sections ---------- */
.section { padding: clamp(3rem, 7vw, 5.5rem) 0; }
.section--tint { background: var(--white); border-top: 1px solid var(--border); border-bottom: 1px solid var(--border); }
.section-head { max-width: 46em; margin-bottom: 2.4rem; }
.section-head p { margin-top: 0.6rem; }

/* ---------- Cards ---------- */
.card-grid { display: grid; gap: 1.4rem; }
.card-grid--2 { grid-template-columns: repeat(2, 1fr); }
.card-grid--3 { grid-template-columns: repeat(3, 1fr); }
.card-grid--4 { grid-template-columns: repeat(4, 1fr); }
@media (max-width: 960px) {
  .card-grid--3, .card-grid--4 { grid-template-columns: repeat(2, 1fr); }
}
@media (max-width: 640px) {
  .card-grid--2, .card-grid--3, .card-grid--4 { grid-template-columns: 1fr; }
}

.card {
  background: var(--white);
  border: 1px solid var(--border);
  border-radius: var(--radius);
  padding: 1.8rem;
  box-shadow: var(--shadow);
  border-top: 4px solid var(--border);
}
.card--teal  { border-top-color: var(--teal); }
.card--amber { border-top-color: var(--amber); }
.card h3 { margin-bottom: 0.55rem; }
.card .icon {
  width: 52px; height: 52px;
  border-radius: 10px;
  display: grid;
  place-items: center;
  margin-bottom: 1rem;
}
.card--teal .icon  { background: var(--teal-tint); }
.card--amber .icon { background: var(--amber-tint); }
.card--teal a.more { color: var(--teal-dark); }
.card a.more {
  display: inline-block;
  margin-top: 0.9rem;
  font-family: var(--font-display);
  font-weight: 600;
  text-decoration: none;
}
.card--amber a.more { color: var(--amber-dark); }

/* ---------- Feature list (why us) ---------- */
.feature { text-align: left; }
.feature .num {
  font-family: var(--font-display);
  font-weight: 700;
  font-size: 0.9rem;
  color: var(--teal-dark);
  letter-spacing: 0.1em;
}

/* ---------- Banner (Institute / CTA) ---------- */
.banner {
  background: var(--ink);
  color: #DCE3EF;
  border-radius: var(--radius);
  padding: clamp(2rem, 5vw, 3.2rem);
  display: grid;
  grid-template-columns: 1.4fr auto;
  gap: 1.5rem;
  align-items: center;
}
.banner h2 { color: var(--white); margin-bottom: 0.5rem; }
.banner--amber { background: linear-gradient(135deg, #2E2410, var(--ink)); border: 1px solid rgba(217,142,43,0.4); }
@media (max-width: 720px) { .banner { grid-template-columns: 1fr; } }

/* ---------- Contact ---------- */
.contact-grid { display: grid; grid-template-columns: 1fr 1.2fr; gap: 2.5rem; }
@media (max-width: 860px) { .contact-grid { grid-template-columns: 1fr; } }

.contact-details { list-style: none; }
.contact-details li { margin-bottom: 1.1rem; padding-left: 2rem; position: relative; }
.contact-details svg { position: absolute; left: 0; top: 0.2rem; }
.contact-details a { color: var(--ink); font-weight: 600; text-decoration: none; }
.contact-details a:hover { color: var(--purple-dark); }

form.enquiry { display: grid; gap: 1rem; }
form.enquiry label {
  font-family: var(--font-display);
  font-weight: 600;
  font-size: 0.92rem;
  color: var(--ink);
  display: block;
  margin-bottom: 0.35rem;
}
form.enquiry input,
form.enquiry select,
form.enquiry textarea {
  width: 100%;
  font: inherit;
  padding: 0.8rem 0.95rem;
  border: 1.5px solid var(--border);
  border-radius: 8px;
  background: var(--white);
  color: var(--ink);
}
form.enquiry input:focus,
form.enquiry select:focus,
form.enquiry textarea:focus {
  outline: 3px solid var(--purple-tint);
  border-color: var(--purple);
}
form.enquiry .row { display: grid; grid-template-columns: 1fr 1fr; gap: 1rem; }
@media (max-width: 560px) { form.enquiry .row { grid-template-columns: 1fr; } }

.form-note { font-size: 0.9rem; }

/* ---------- Team / placeholder photos ---------- */
.photo-frame {
  border-radius: var(--radius);
  overflow: hidden;
  border: 1px solid var(--border);
  box-shadow: var(--shadow);
}

/* ---------- Footer ---------- */
.site-footer {
  background: var(--ink);
  color: #B9C3D6;
  padding: 3.5rem 0 2rem;
  margin-top: 4rem;
  font-size: 0.95rem;
}
.footer-grid {
  display: grid;
  grid-template-columns: 1.4fr 1fr 1.2fr;
  gap: 2.5rem;
  margin-bottom: 2.5rem;
}
@media (max-width: 860px) { .footer-grid { grid-template-columns: 1fr; } }
.site-footer h4 { color: var(--white); font-size: 1rem; margin-bottom: 0.9rem; }
.site-footer ul { list-style: none; }
.site-footer li { margin-bottom: 0.5rem; }
.site-footer a { color: #B9C3D6; text-decoration: none; }
.site-footer a:hover { color: var(--white); }
.footer-bottom {
  border-top: 1px solid rgba(255,255,255,0.14);
  padding-top: 1.4rem;
  display: flex;
  flex-wrap: wrap;
  justify-content: space-between;
  gap: 0.8rem;
  font-size: 0.85rem;
}

/* ---------- Utility ---------- */
.text-center { text-align: center; }
.mt-2 { margin-top: 2rem; }
.stream-key { display: flex; gap: 1.6rem; flex-wrap: wrap; margin-top: 1.4rem; font-size: 0.9rem; }
.stream-key span { display: flex; align-items: center; gap: 0.5rem; }
.dot { width: 12px; height: 12px; border-radius: 50%; display: inline-block; }
.dot--teal { background: var(--teal); }
.dot--amber { background: var(--amber); }