/* ============================================================
   BSP — Styles
   Clean, restrained investment management aesthetic
   ============================================================ */

:root {
  --navy:       #1E2253;
  --navy-light: #2D3578;
  --blue:       #3B5BDB;
  --gold:       #C9862A;
  --white:      #ffffff;
  --off-white:  #F7F7FA;
  --border:     #E4E4EA;
  --text:       #1E2253;
  --text-mid:   #4A4A6A;
  --text-light: #7A7A96;
  --font:       'Inter', system-ui, -apple-system, sans-serif;
  --font-serif: 'DM Serif Display', 'Georgia', serif;
  --radius:     6px;
  --container:  1140px;
  --transition: 0.3s ease;
}

*, *::before, *::after { box-sizing: border-box; margin: 0; padding: 0; }
html { scroll-behavior: smooth; -webkit-font-smoothing: antialiased; }
body {
  font-family: var(--font);
  font-size: 1rem;
  line-height: 1.7;
  color: var(--text);
  background: var(--white);
}
img { max-width: 100%; height: auto; display: block; }
a { color: inherit; text-decoration: none; }

.container { max-width: var(--container); margin: 0 auto; padding: 0 2rem; }

/* ---- Typography ---- */
.display {
  font-family: var(--font-serif);
  font-size: clamp(2.6rem, 5vw, 4.2rem);
  font-weight: 400;
  line-height: 1.12;
  letter-spacing: -0.01em;
}
h1 {
  font-family: var(--font-serif);
  font-size: clamp(2.2rem, 4vw, 3.4rem);
  font-weight: 400;
  line-height: 1.15;
}
h2 {
  font-family: var(--font-serif);
  font-size: clamp(1.7rem, 3vw, 2.5rem);
  font-weight: 400;
  line-height: 1.2;
}
h3 {
  font-family: var(--font-serif);
  font-size: 1.35rem;
  font-weight: 400;
  line-height: 1.3;
}
h4 { font-size: 1rem; font-weight: 600; line-height: 1.4; }
.lead {
  font-size: clamp(1.05rem, 1.5vw, 1.2rem);
  line-height: 1.75;
  color: var(--text-mid);
}
.overline {
  font-size: 0.75rem;
  font-weight: 600;
  letter-spacing: 0.14em;
  text-transform: uppercase;
  color: var(--gold);
}

/* ---- Navigation ---- */
.nav {
  position: fixed; top: 0; left: 0; right: 0; z-index: 100;
  padding: 1.5rem 0;
  transition: all var(--transition);
}
.nav--scrolled {
  background: rgba(30, 34, 83, 0.95);
  backdrop-filter: blur(20px);
  -webkit-backdrop-filter: blur(20px);
  padding: 0.65rem 0;
  border-bottom: 1px solid rgba(255,255,255,0.06);
}
.nav__inner {
  max-width: var(--container); margin: 0 auto; padding: 0 2rem;
  display: flex; align-items: center; justify-content: space-between;
}
.nav__logo { display: flex; align-items: center; gap: 0.75rem; }
.nav__logo img { height: 36px; width: auto; transition: height var(--transition); }
.nav--scrolled .nav__logo img { height: 30px; }
.nav__links { display: flex; align-items: center; gap: 0.5rem; }
.nav__link {
  font-size: 0.88rem; font-weight: 500;
  color: rgba(255,255,255,0.6);
  transition: all var(--transition);
  letter-spacing: 0.01em;
  padding: 0.45rem 0.9rem;
  border-radius: 4px;
  position: relative;
}
.nav__link:hover { color: var(--white); background: rgba(255,255,255,0.06); }
.nav__link--active { color: var(--white); }
.nav__link--active::after {
  content: '';
  position: absolute;
  bottom: 0; left: 50%; transform: translateX(-50%);
  width: 16px; height: 2px;
  background: var(--gold);
  border-radius: 1px;
}
.nav__cta { padding: 0; }
.nav__cta:hover { background: none; }
.nav__cta .btn { font-size: 0.82rem; padding: 0.45rem 1.1rem; border-radius: 4px; }
.nav__toggle {
  display: none; background: none; border: none; cursor: pointer;
  width: 28px; height: 20px; position: relative; z-index: 101;
}
.nav__toggle span {
  display: block; width: 100%; height: 2px; background: var(--white);
  position: absolute; left: 0; transition: all 0.3s;
}
.nav__toggle span:nth-child(1) { top: 0; }
.nav__toggle span:nth-child(2) { top: 9px; }
.nav__toggle span:nth-child(3) { top: 18px; }
.nav__toggle.active span:nth-child(1) { transform: rotate(45deg); top: 9px; }
.nav__toggle.active span:nth-child(2) { opacity: 0; }
.nav__toggle.active span:nth-child(3) { transform: rotate(-45deg); top: 9px; }

/* ---- Buttons ---- */
.btn {
  display: inline-flex; align-items: center; gap: 0.5rem;
  padding: 0.85rem 2rem; border-radius: 4px;
  font-size: 0.9rem; font-weight: 600; letter-spacing: 0.02em;
  transition: all var(--transition); border: none; cursor: pointer;
}
.btn--primary { background: var(--navy); color: var(--white); }
.btn--primary:hover { background: var(--navy-light); }
.btn--sm { padding: 0.5rem 1.25rem; font-size: 0.85rem; }
.btn--outline { background: transparent; color: var(--white); border: 1px solid rgba(255,255,255,0.3); }
.btn--outline:hover { border-color: var(--white); }
.btn--outline-dark { background: transparent; color: var(--navy); border: 1px solid var(--border); }
.btn--outline-dark:hover { border-color: var(--navy); }
.btn-arrow { width: 16px; height: 16px; transition: transform 0.2s; }
.btn:hover .btn-arrow { transform: translateX(3px); }

/* ---- Hero ---- */
.hero {
  background: var(--navy);
  color: var(--white);
  padding: 10rem 0 6rem;
  min-height: 85vh;
  display: flex;
  align-items: center;
}
.hero__content { max-width: 680px; }
.hero .display { color: var(--white); margin-bottom: 1.5rem; }
.hero .lead { color: rgba(255,255,255,0.55); margin-bottom: 2.5rem; }
.hero__ctas { display: flex; gap: 1rem; flex-wrap: wrap; }

.page-header {
  background: var(--navy);
  color: var(--white);
  padding: 9rem 0 4rem;
}
.page-header .overline { color: var(--gold); margin-bottom: 1rem; display: block; }
.page-header h1 { color: var(--white); margin-bottom: 1rem; }
.page-header .lead { color: rgba(255,255,255,0.5); max-width: 580px; }

/* ---- Sections ---- */
.section { padding: 6rem 0; }
.section--light { background: var(--off-white); }
.section--navy { background: var(--navy); color: var(--white); }
.section-header { margin-bottom: 3.5rem; }
.section-header h2 { margin-top: 0.75rem; }
.section-header .lead { margin-top: 1rem; max-width: 640px; }
.section-header--center { text-align: center; }
.section-header--center .lead { margin-left: auto; margin-right: auto; }

.two-col { display: grid; grid-template-columns: 1fr 1fr; gap: 5rem; align-items: start; }
.grid { display: grid; gap: 2rem; }
.grid--2 { grid-template-columns: repeat(2, 1fr); }
.grid--3 { grid-template-columns: repeat(3, 1fr); }
.grid--4 { grid-template-columns: repeat(4, 1fr); }

/* ---- Cards ---- */
.card {
  padding: 2rem;
  border: 1px solid var(--border);
  border-radius: var(--radius);
  transition: border-color var(--transition);
}
.card:hover { border-color: var(--navy); }
.card__title {
  font-family: var(--font-serif);
  font-size: 1.15rem;
  font-weight: 400;
  margin-bottom: 0.75rem;
}
.card__text {
  font-size: 0.92rem;
  line-height: 1.65;
  color: var(--text-mid);
}

/* ---- Value Steps ---- */
.value-steps {
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  gap: 0;
  border-top: 1px solid var(--border);
  margin-top: 3rem;
}
.value-step {
  padding: 2rem 2rem 0 0;
  border-top: 3px solid transparent;
  margin-top: -2px;
  transition: border-color var(--transition);
}
.value-step:hover { border-top-color: var(--gold); }
.value-step__number {
  font-size: 0.75rem; font-weight: 600;
  color: var(--gold); letter-spacing: 0.05em;
  margin-bottom: 0.75rem;
}
.value-step__title {
  font-family: var(--font-serif);
  font-size: 1.15rem; font-weight: 400;
  margin-bottom: 0.5rem;
}
.value-step__text { font-size: 0.9rem; line-height: 1.6; color: var(--text-mid); }

/* ---- Comparison ---- */
.comparison { border: 1px solid var(--border); border-radius: var(--radius); overflow: hidden; }
.comparison__header {
  display: grid; grid-template-columns: 1.5fr 1fr 1fr;
  background: var(--navy); color: var(--white);
  padding: 1rem 1.5rem; font-weight: 600; font-size: 0.9rem;
}
.comparison__row {
  display: grid; grid-template-columns: 1.5fr 1fr 1fr;
  padding: 1rem 1.5rem; border-bottom: 1px solid var(--border); font-size: 0.9rem;
}
.comparison__row:last-child { border-bottom: none; }
.comparison__row:nth-child(even) { background: var(--off-white); }
.comparison__label { font-weight: 500; }
.comparison__bsp { color: var(--text-mid); }
.comparison__pe { color: var(--text-light); }

/* ---- Case Cards ---- */
.case-card { padding: 2rem; border: 1px solid var(--border); border-radius: var(--radius); }
.case-card__sector {
  font-size: 0.8rem; font-weight: 600; letter-spacing: 0.08em;
  text-transform: uppercase; color: var(--text-light); margin-bottom: 0.75rem;
}
.case-card__result { font-size: 0.95rem; line-height: 1.65; color: var(--text-mid); }
.case-card__highlight { font-weight: 600; color: var(--navy); }
.case-card__tag {
  display: inline-block; font-size: 0.7rem; font-weight: 600;
  letter-spacing: 0.05em; text-transform: uppercase;
  padding: 0.2rem 0.55rem; border-radius: 3px; margin-bottom: 0.75rem;
}
.case-card__tag--ai { background: rgba(59, 91, 219, 0.1); color: var(--blue); }
.case-card__tag--build { background: rgba(201, 134, 42, 0.12); color: var(--gold); }

/* ---- Team ---- */
.team-member { display: flex; gap: 1.5rem; align-items: flex-start; }
.team-member__photo {
  width: 72px; height: 72px; border-radius: 50%;
  background: var(--off-white); display: flex; align-items: center;
  justify-content: center; flex-shrink: 0;
  font-weight: 700; font-size: 0.85rem; color: var(--navy);
  border: 1px solid var(--border);
}
.section--navy .team-member__photo {
  background: rgba(255,255,255,0.08);
  border-color: rgba(255,255,255,0.15);
  color: var(--white);
}
.team-member__name { font-family: var(--font-serif); font-size: 1.15rem; font-weight: 400; margin-bottom: 0.15rem; }
.team-member__role { font-size: 0.85rem; font-weight: 600; color: var(--blue); margin-bottom: 0.5rem; }
.section--navy .team-member__role { color: var(--gold); }
.team-member__bio { font-size: 0.9rem; line-height: 1.65; color: var(--text-mid); }
.section--navy .team-member__bio { color: rgba(255,255,255,0.55); }
.section--navy .team-member__name { color: var(--white); }

.partner-grid { display: grid; grid-template-columns: repeat(4, 1fr); gap: 1.5rem; }
.partner-card { text-align: center; padding: 1.5rem; border: 1px solid var(--border); border-radius: var(--radius); }
.section--navy .partner-card { border-color: rgba(255,255,255,0.1); }
.partner-card__photo {
  width: 56px; height: 56px; border-radius: 50%;
  background: var(--off-white); display: flex; align-items: center;
  justify-content: center; margin: 0 auto 0.75rem;
  font-weight: 700; font-size: 0.8rem; color: var(--navy);
}
.section--navy .partner-card__photo { background: rgba(255,255,255,0.08); color: var(--white); }
.partner-card__name { font-family: var(--font-serif); font-size: 1rem; font-weight: 400; margin-bottom: 0.2rem; }
.section--navy .partner-card__name { color: var(--white); }
.partner-card__title { font-size: 0.82rem; color: var(--text-light); }
.section--navy .partner-card__title { color: rgba(255,255,255,0.45); }

/* ---- Timeline ---- */
.timeline { position: relative; padding-left: 2rem; }
.timeline::before { content: ''; position: absolute; left: 0; top: 0; bottom: 0; width: 1px; background: var(--border); }
.timeline__item { position: relative; padding-bottom: 2.5rem; }
.timeline__item:last-child { padding-bottom: 0; }
.timeline__item::before {
  content: ''; position: absolute; left: -2rem; top: 0.45rem;
  width: 7px; height: 7px; border-radius: 50%; background: var(--gold);
  transform: translateX(-3px);
}
.timeline__title { font-family: var(--font-serif); font-size: 1.1rem; font-weight: 400; margin-bottom: 0.4rem; }
.timeline__text { font-size: 0.92rem; color: var(--text-mid); line-height: 1.65; }

/* ---- ELab Pillars ---- */
.pillar {
  display: flex; gap: 1.25rem; align-items: flex-start;
  padding: 1.75rem; border: 1px solid var(--border); border-radius: var(--radius);
}
.pillar__icon {
  width: 40px; height: 40px; flex-shrink: 0;
  display: flex; align-items: center; justify-content: center; color: var(--blue);
}
.pillar__title { font-family: var(--font-serif); font-size: 1.05rem; font-weight: 400; margin-bottom: 0.3rem; }
.pillar__text { font-size: 0.9rem; color: var(--text-mid); line-height: 1.6; }

/* ---- Method Steps ---- */
.method-step { display: flex; gap: 1.5rem; padding: 1.75rem 0; border-bottom: 1px solid var(--border); }
.section--navy .method-step { border-color: rgba(255,255,255,0.08); }
.method-step:last-child { border-bottom: none; }
.method-step__num {
  width: 36px; height: 36px; border-radius: 50%;
  background: var(--off-white); display: flex; align-items: center; justify-content: center;
  font-weight: 700; font-size: 0.85rem; color: var(--navy); flex-shrink: 0;
}
.section--navy .method-step__num { background: rgba(255,255,255,0.08); color: var(--white); }
.method-step__title { font-family: var(--font-serif); font-size: 1.1rem; font-weight: 400; margin-bottom: 0.3rem; }
.section--navy .method-step__title { color: var(--white); }
.method-step__text { font-size: 0.92rem; color: var(--text-mid); line-height: 1.6; }
.section--navy .method-step__text { color: rgba(255,255,255,0.55); }

/* ---- Platforms ---- */
.platforms { display: grid; grid-template-columns: repeat(2, 1fr); gap: 2rem; }
.platform-card { padding: 2rem; border: 1px solid var(--border); border-radius: var(--radius); }
.platform-card__name { font-family: var(--font-serif); font-size: 1.2rem; font-weight: 400; color: var(--navy); margin-bottom: 0.75rem; }
.platform-card__text { font-size: 0.92rem; color: var(--text-mid); line-height: 1.65; }

/* ---- Sector Tags ---- */
.sector-tags { display: flex; flex-wrap: wrap; gap: 0.5rem; }
.sector-tag { padding: 0.5rem 1rem; border: 1px solid var(--border); border-radius: 4px; font-size: 0.85rem; font-weight: 500; }
.section--navy .sector-tag { border-color: rgba(255,255,255,0.15); color: rgba(255,255,255,0.7); }

/* ---- Contact ---- */
.enquiry-types { display: grid; grid-template-columns: repeat(3, 1fr); gap: 2rem; }
.enquiry-type { padding: 2rem; border: 1px solid var(--border); border-radius: var(--radius); text-align: center; }
.enquiry-type__icon { width: 48px; height: 48px; margin: 0 auto 1rem; display: flex; align-items: center; justify-content: center; color: var(--navy); }
.enquiry-type__title { font-family: var(--font-serif); font-size: 1.1rem; font-weight: 400; margin-bottom: 0.5rem; }
.enquiry-type__text { font-size: 0.9rem; color: var(--text-mid); line-height: 1.6; }

.form-row { display: grid; grid-template-columns: 1fr 1fr; gap: 1rem; }
.form-group { margin-bottom: 1.25rem; }
.form-group label { display: block; font-size: 0.85rem; font-weight: 500; margin-bottom: 0.4rem; }
.form-group input, .form-group select, .form-group textarea {
  width: 100%; padding: 0.75rem 1rem; border: 1px solid var(--border);
  border-radius: 4px; font-family: var(--font); font-size: 0.92rem;
  color: var(--text); background: var(--white); transition: border-color var(--transition);
}
.form-group input:focus, .form-group select:focus, .form-group textarea:focus { outline: none; border-color: var(--navy); }
.form-group textarea { min-height: 120px; resize: vertical; }
.contact-block { display: flex; gap: 1rem; align-items: flex-start; margin-bottom: 1.5rem; }
.contact-block__icon { width: 40px; height: 40px; display: flex; align-items: center; justify-content: center; color: var(--navy); flex-shrink: 0; }
.contact-block__label { font-size: 0.8rem; font-weight: 600; text-transform: uppercase; letter-spacing: 0.06em; color: var(--text-light); margin-bottom: 0.15rem; }
.contact-block__value a { color: var(--navy); font-weight: 500; transition: color var(--transition); }
.contact-block__value a:hover { color: var(--blue); }

/* ---- Form success/error ---- */
.form-message {
  padding: 1rem 1.5rem; border-radius: var(--radius);
  font-size: 0.9rem; font-weight: 500; text-align: center;
  margin-top: 1rem; display: none;
}
.form-message--success { background: #e8f5e9; color: #2e7d32; display: block; }
.form-message--error { background: #fce4ec; color: #c62828; display: block; }

/* ---- Footer ---- */
.footer { background: var(--navy); color: var(--white); padding: 4rem 0 2rem; }
.footer__grid { display: grid; grid-template-columns: 2fr 1fr 1fr 1fr; gap: 3rem; margin-bottom: 3rem; }
.footer__brand p { font-size: 0.88rem; line-height: 1.65; color: rgba(255,255,255,0.45); margin-top: 1rem; }
.footer__heading { font-size: 0.75rem; font-weight: 600; letter-spacing: 0.1em; text-transform: uppercase; color: rgba(255,255,255,0.35); margin-bottom: 1.25rem; }
.footer__link { display: block; font-size: 0.9rem; color: rgba(255,255,255,0.6); margin-bottom: 0.6rem; transition: color var(--transition); }
a.footer__link:hover { color: var(--white); }
.footer__bottom { display: flex; justify-content: space-between; align-items: center; padding-top: 2rem; border-top: 1px solid rgba(255,255,255,0.08); font-size: 0.82rem; color: rgba(255,255,255,0.3); }

/* ---- Animations ---- */
.fade-up { opacity: 0; transform: translateY(20px); transition: opacity 0.6s ease, transform 0.6s ease; }
.fade-up.visible { opacity: 1; transform: translateY(0); }
.stagger > * { opacity: 0; transform: translateY(16px); transition: opacity 0.5s ease, transform 0.5s ease; }
.stagger.visible > * { opacity: 1; transform: translateY(0); }
.stagger.visible > *:nth-child(1) { transition-delay: 0s; }
.stagger.visible > *:nth-child(2) { transition-delay: 0.08s; }
.stagger.visible > *:nth-child(3) { transition-delay: 0.16s; }
.stagger.visible > *:nth-child(4) { transition-delay: 0.16s; }
.stagger.visible > *:nth-child(5) { transition-delay: 0.24s; }
.stagger.visible > *:nth-child(6) { transition-delay: 0.32s; }

.text-center { text-align: center; }

/* ---- Vapi / Maisie widget ---- */
.vapi-btn {
  position: fixed !important;
  bottom: 28px !important;
  right: 28px !important;
  z-index: 9999 !important;
  width: 56px !important;
  height: 56px !important;
  border-radius: 50% !important;
  box-shadow: 0 4px 20px rgba(30, 34, 83, 0.35) !important;
}
#vapi-support-btn, [id^="vapi"] {
  position: fixed !important;
  bottom: 28px !important;
  right: 28px !important;
  z-index: 9999 !important;
}

/* ---- Responsive ---- */
@media (max-width: 1024px) {
  .two-col { gap: 3rem; }
  .grid--4 { grid-template-columns: repeat(2, 1fr); }
}
@media (max-width: 768px) {
  .nav__links { display: none; }
  .nav__toggle { display: block; }
  .nav__links.active {
    display: flex; flex-direction: column; position: fixed;
    top: 0; left: 0; right: 0; bottom: 0; background: var(--navy);
    justify-content: center; align-items: center; gap: 2rem; z-index: 100;
  }
  .nav__links.active .nav__link {
    font-size: 1.5rem; color: var(--white);
    padding: 0.5rem 1rem;
  }
  .nav__links.active .nav__link::after { display: none; }
  .hero { padding: 8rem 0 4rem; min-height: auto; }
  .page-header { padding: 7rem 0 3rem; }
  .section { padding: 4rem 0; }
  .two-col { grid-template-columns: 1fr; gap: 2.5rem; }
  .grid--2, .grid--3, .grid--4 { grid-template-columns: 1fr; }
  .value-steps { grid-template-columns: 1fr 1fr; }
  .comparison__header, .comparison__row { grid-template-columns: 1.2fr 1fr 1fr; font-size: 0.82rem; }
  .enquiry-types { grid-template-columns: 1fr; }
  .form-row { grid-template-columns: 1fr; }
  .partner-grid { grid-template-columns: repeat(2, 1fr); }
  .platforms { grid-template-columns: 1fr; }
  .footer__grid { grid-template-columns: 1fr; gap: 2rem; }
  .footer__bottom { flex-direction: column; gap: 0.5rem; text-align: center; }
}
@media (max-width: 480px) {
  .value-steps { grid-template-columns: 1fr; }
  .partner-grid { grid-template-columns: 1fr 1fr; }
}