/* ============================================================
   buywithXP — XP M&A buy-side site
   Light theme on the XP palette (v4 pattern shared with sellwithXP)
   ============================================================ */

@import url('https://fonts.googleapis.com/css2?family=Montserrat:wght@600;700;800&family=Roboto:wght@400;500;700&display=swap');

:root {
  /* Core brand */
  --xp-midnight:      #1B2A4A;
  --xp-midnight-deep: #13203A;
  --xp-steel:         #4A4A4A;
  --xp-ink:           #2A2A2A;

  /* Two gold tokens — do not swap them.
     --xp-gold is for fills, rules, bars, and text ON NAVY.
     --xp-gold-text is the darkened, AA-safe gold for text on light bg. */
  --xp-gold:      #C9A84C;
  --xp-gold-text: #926D10;

  /* Neutrals */
  --xp-white:  #FFFFFF;
  --xp-mist:   #F4F5F7;
  --xp-tint:   #E8EBF1;
  --xp-border: #D9DBE0;

  --font-head: 'Montserrat', 'Inter', Calibri, Arial, sans-serif;
  --font-body: 'Roboto', Arial, Helvetica, sans-serif;

  --maxw: 1080px;
  --radius: 8px;
  --shadow: 0 10px 30px rgba(27, 42, 74, 0.10);
}

* { margin: 0; padding: 0; box-sizing: border-box; }
html { scroll-behavior: smooth; }

body {
  font-family: var(--font-body);
  color: var(--xp-ink);
  background: var(--xp-white);
  line-height: 1.55;
  font-size: 17px;
  -webkit-font-smoothing: antialiased;
}

img, svg { max-width: 100%; }

h1, h2, h3, h4 {
  font-family: var(--font-head);
  color: var(--xp-midnight);
  line-height: 1.15;
  font-weight: 700;
}

p { color: var(--xp-steel); }
strong { color: var(--xp-ink); }

a { color: var(--xp-midnight); }
a:hover { color: var(--xp-gold-text); }

.wrap { max-width: var(--maxw); margin: 0 auto; padding: 0 24px; }

.kicker {
  font-family: var(--font-head);
  font-size: 0.78rem;
  font-weight: 700;
  letter-spacing: 0.14em;
  text-transform: uppercase;
  color: var(--xp-gold-text);
  display: block;
  margin-bottom: 0.9rem;
}

.gold-rule {
  border: none;
  border-top: 3px solid var(--xp-gold);
  width: 56px;
  margin: 1.1rem 0 1.4rem;
}
.gold-rule.center { margin-left: auto; margin-right: auto; }

/* ---------- Buttons ---------- */
.btn {
  display: inline-block;
  font-family: var(--font-head);
  font-weight: 700;
  font-size: 0.95rem;
  padding: 0.9rem 1.7rem;
  border-radius: 5px;
  text-decoration: none;
  border: 2px solid transparent;
  cursor: pointer;
  transition: transform 0.15s ease, box-shadow 0.15s ease, background 0.15s ease;
}
.btn:active { transform: translateY(1px); }

.btn-gold {
  background: var(--xp-gold);
  color: var(--xp-midnight);
}
.btn-gold:hover { background: #d4b55e; color: var(--xp-midnight); box-shadow: var(--shadow); }

.btn-navy {
  background: var(--xp-midnight);
  color: var(--xp-white);
}
.btn-navy:hover { background: var(--xp-midnight-deep); color: var(--xp-white); }

.btn-ghost {
  background: transparent;
  color: var(--xp-midnight);
  border-color: var(--xp-midnight);
}
.btn-ghost:hover { background: var(--xp-tint); color: var(--xp-midnight); }

/* On navy sections */
.on-navy .btn-ghost { color: var(--xp-white); border-color: rgba(255,255,255,0.55); }
.on-navy .btn-ghost:hover { background: rgba(255,255,255,0.08); color: var(--xp-white); }

/* ---------- Header ---------- */
.site-header {
  position: sticky;
  top: 0;
  z-index: 60;
  background: rgba(255,255,255,0.94);
  backdrop-filter: blur(8px);
  border-bottom: 1px solid var(--xp-border);
}
.site-header .wrap {
  display: flex;
  align-items: center;
  justify-content: space-between;
  height: 68px;
}
.logo {
  font-family: var(--font-head);
  font-weight: 800;
  font-size: 1.25rem;
  color: var(--xp-midnight);
  text-decoration: none;
  letter-spacing: -0.01em;
}
.logo span { color: var(--xp-gold-text); }
.logo:hover { color: var(--xp-midnight); }

.nav-links { display: flex; align-items: center; gap: 1.5rem; }
.nav-links a {
  font-family: var(--font-head);
  font-size: 0.86rem;
  font-weight: 600;
  color: var(--xp-steel);
  text-decoration: none;
}
.nav-links a:hover { color: var(--xp-midnight); }
.nav-links .btn { padding: 0.55rem 1.1rem; font-size: 0.84rem; }

.nav-toggle { display: none; background: none; border: none; cursor: pointer; padding: 8px; }
.nav-toggle span {
  display: block; width: 22px; height: 2px; background: var(--xp-midnight);
  margin: 5px 0; transition: 0.2s;
}

/* ---------- Hero ---------- */
.hero {
  position: relative;
  overflow: hidden;
  padding: 5.5rem 0 7.5rem;
  background: linear-gradient(180deg, #FDFDFE 0%, #F7F8FA 100%);
}
.hero-ridge {
  position: absolute;
  left: 0; right: 0; bottom: -2px;
  width: 100%;
  height: 46%;
  min-height: 220px;
  pointer-events: none;
}
.hero-ridge svg, .hero-ridge img { width: 100%; height: 100%; display: block; }
.hero .wrap { position: relative; z-index: 2; max-width: 880px; text-align: center; }

.hero h1 {
  font-size: clamp(2.1rem, 5vw, 3.3rem);
  letter-spacing: -0.02em;
  margin-bottom: 1.2rem;
}
.hero h1 em {
  font-style: normal;
  color: var(--xp-gold-text);
}
.hero .sub {
  font-size: 1.15rem;
  max-width: 640px;
  margin: 0 auto 2.1rem;
}
.hero-ctas { display: flex; gap: 0.9rem; justify-content: center; flex-wrap: wrap; }
.hero-note { margin-top: 1rem; font-size: 0.85rem; color: var(--xp-steel); }

/* ---------- Sections ---------- */
section { padding: 5rem 0; }
.sec-mist { background: var(--xp-mist); }

.sec-head { max-width: 720px; margin-bottom: 2.6rem; }
.sec-head.center { margin-left: auto; margin-right: auto; text-align: center; }
.sec-head h2 { font-size: clamp(1.6rem, 3.4vw, 2.3rem); letter-spacing: -0.015em; }
.sec-head .lede { margin-top: 1rem; font-size: 1.06rem; }

/* Navy band sections */
.sec-navy {
  background: linear-gradient(180deg, var(--xp-midnight) 0%, var(--xp-midnight-deep) 100%);
  color: #E7EAF0;
}
.sec-navy h2, .sec-navy h3 { color: var(--xp-white); }
.sec-navy p { color: #C4CBD8; }
.sec-navy .kicker { color: var(--xp-gold); }
.sec-navy a { color: var(--xp-white); }
.sec-navy a:hover { color: var(--xp-gold); }

/* ---------- The case (math strip) ---------- */
.case-grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 1.4rem;
  margin-top: 1rem;
}
.case-card {
  background: var(--xp-white);
  border: 1px solid var(--xp-border);
  border-radius: var(--radius);
  padding: 1.6rem 1.5rem;
}
.case-card .num {
  font-family: var(--font-head);
  font-weight: 800;
  font-size: 2rem;
  color: var(--xp-midnight);
  display: block;
  margin-bottom: 0.4rem;
}
.case-card .num.gold { color: var(--xp-gold-text); }
.case-card h3 { font-size: 1.02rem; margin-bottom: 0.5rem; }
.case-card p { font-size: 0.93rem; }

.levers {
  margin-top: 3rem;
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 1.4rem;
}
.lever {
  border-top: 3px solid var(--xp-gold);
  background: var(--xp-white);
  border-radius: 0 0 var(--radius) var(--radius);
  padding: 1.4rem 1.5rem;
  box-shadow: var(--shadow);
}
.lever h3 { font-size: 1.05rem; margin-bottom: 0.5rem; }
.lever p { font-size: 0.94rem; }

/* ---------- Broker comparison ---------- */
.compare-table { width: 100%; border-collapse: collapse; background: var(--xp-white); box-shadow: var(--shadow); border-radius: var(--radius); overflow: hidden; }
.compare-table th {
  font-family: var(--font-head);
  text-align: left;
  padding: 1rem 1.2rem;
  font-size: 0.95rem;
}
.compare-table th.dim-col { width: 24%; background: var(--xp-mist); color: var(--xp-midnight); }
.compare-table th.them { width: 38%; background: var(--xp-mist); color: var(--xp-steel); }
.compare-table th.us { width: 38%; background: var(--xp-midnight); color: var(--xp-white); }
.compare-table th.us span { color: var(--xp-gold); }
.compare-table td {
  padding: 1rem 1.2rem;
  border-top: 1px solid var(--xp-border);
  font-size: 0.94rem;
  vertical-align: top;
  color: var(--xp-steel);
}
.compare-table td.dim {
  font-family: var(--font-head);
  font-weight: 700;
  font-size: 0.85rem;
  color: var(--xp-midnight);
}
.compare-table td.us-cell {
  background: #F2F4F9;
  color: var(--xp-ink);
  border-left: 3px solid var(--xp-gold);
}
.compare-close { max-width: 680px; margin: 2rem auto 0; text-align: center; font-size: 0.95rem; }

/* Mobile: stack to cards */
@media (max-width: 760px) {
  .compare-table, .compare-table tbody, .compare-table tr, .compare-table td { display: block; width: 100%; }
  .compare-table thead { display: none; }
  .compare-table tr { border-top: 1px solid var(--xp-border); padding: 1rem 0; }
  .compare-table td { border: none; padding: 0.45rem 1.2rem; }
  .compare-table td.dim { padding-top: 1rem; font-size: 0.8rem; text-transform: uppercase; letter-spacing: 0.06em; }
  .compare-table td.them-cell::before {
    content: "Typical broker: ";
    font-weight: 700;
    color: var(--xp-steel);
  }
  .compare-table td.us-cell { border-left: 3px solid var(--xp-gold); margin: 0.35rem 1.2rem 0.8rem; padding: 0.7rem 1rem; border-radius: 4px; }
  .compare-table td.us-cell::before {
    content: "XP M&A: ";
    font-family: var(--font-head);
    font-weight: 700;
    color: var(--xp-midnight);
  }
}

/* ---------- Modeler ---------- */
.modeler {
  background: var(--xp-white);
  border: 1px solid var(--xp-border);
  border-radius: var(--radius);
  box-shadow: var(--shadow);
  overflow: hidden;
  display: grid;
  grid-template-columns: 380px 1fr;
}
.modeler-inputs {
  padding: 1.8rem 1.6rem;
  border-right: 1px solid var(--xp-border);
  background: #FAFBFC;
}
.modeler-results { padding: 1.8rem 1.8rem 2rem; }

.field { margin-bottom: 1.15rem; }
.field label {
  display: flex;
  justify-content: space-between;
  align-items: baseline;
  font-family: var(--font-head);
  font-size: 0.8rem;
  font-weight: 700;
  color: var(--xp-midnight);
  margin-bottom: 0.4rem;
  letter-spacing: 0.02em;
}
.field label output {
  font-size: 0.86rem;
  color: var(--xp-gold-text);
  font-variant-numeric: tabular-nums;
}
.field input[type="range"] {
  width: 100%;
  accent-color: var(--xp-midnight);
}
.field select, .field input[type="text"], .field input[type="email"], .field input[type="tel"] {
  width: 100%;
  padding: 0.6rem 0.7rem;
  border: 1px solid var(--xp-border);
  border-radius: 4px;
  font-family: var(--font-body);
  font-size: 0.95rem;
  color: var(--xp-ink);
  background: var(--xp-white);
}
.field .hint { font-size: 0.78rem; color: var(--xp-steel); margin-top: 0.3rem; }

.headline-stats {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 1rem;
  margin-bottom: 1.4rem;
}
.stat {
  background: var(--xp-mist);
  border-radius: 6px;
  padding: 0.95rem 1rem;
}
.stat .v {
  font-family: var(--font-head);
  font-weight: 800;
  font-size: 1.5rem;
  color: var(--xp-midnight);
  display: block;
  font-variant-numeric: tabular-nums;
}
.stat.hi { background: var(--xp-midnight); }
.stat.hi .v { color: var(--xp-gold); }
.stat.hi .l { color: #C4CBD8; }
.stat .l { font-size: 0.75rem; color: var(--xp-steel); letter-spacing: 0.03em; text-transform: uppercase; font-family: var(--font-head); font-weight: 600; }

#modelChart { width: 100%; height: auto; display: block; }

.bridge { margin-top: 1.3rem; border-top: 1px solid var(--xp-border); padding-top: 1.1rem; }
.bridge h4 { font-size: 0.82rem; text-transform: uppercase; letter-spacing: 0.08em; margin-bottom: 0.7rem; color: var(--xp-steel); }
.bridge-row {
  display: flex;
  justify-content: space-between;
  font-size: 0.92rem;
  padding: 0.3rem 0;
  color: var(--xp-steel);
  font-variant-numeric: tabular-nums;
}
.bridge-row b { color: var(--xp-ink); font-variant-numeric: tabular-nums; }
.bridge-row.total {
  border-top: 1px solid var(--xp-border);
  margin-top: 0.4rem;
  padding-top: 0.6rem;
  font-family: var(--font-head);
  font-weight: 700;
  color: var(--xp-midnight);
}
.bridge-row.total b { color: var(--xp-gold-text); font-size: 1.05rem; }

.model-disclaimer { margin-top: 1.2rem; font-size: 0.78rem; color: var(--xp-steel); line-height: 1.5; }

.model-cta {
  margin-top: 1.4rem;
  background: var(--xp-tint);
  border-left: 4px solid var(--xp-gold);
  border-radius: 4px;
  padding: 1.1rem 1.2rem;
}
.model-cta p { font-size: 0.92rem; margin-bottom: 0.8rem; color: var(--xp-ink); }
.model-cta form { display: flex; gap: 0.6rem; flex-wrap: wrap; }
.model-cta input[type="email"] {
  flex: 1 1 200px;
  padding: 0.65rem 0.8rem;
  border: 1px solid var(--xp-border);
  border-radius: 4px;
  font-size: 0.92rem;
}
.model-cta .btn { padding: 0.65rem 1.2rem; font-size: 0.85rem; }

@media (max-width: 900px) {
  .modeler { grid-template-columns: 1fr; }
  .modeler-inputs { border-right: none; border-bottom: 1px solid var(--xp-border); }
}

/* ---------- Process ---------- */
.steps { counter-reset: step; display: grid; gap: 1.1rem; max-width: 820px; margin: 0 auto; }
.step {
  counter-increment: step;
  display: grid;
  grid-template-columns: 64px 1fr;
  gap: 1.2rem;
  background: var(--xp-white);
  border: 1px solid var(--xp-border);
  border-radius: var(--radius);
  padding: 1.4rem 1.5rem;
  align-items: start;
}
.step::before {
  content: "0" counter(step);
  font-family: var(--font-head);
  font-weight: 800;
  font-size: 1.7rem;
  color: var(--xp-gold-text);
  line-height: 1.1;
}
.step h3 { font-size: 1.08rem; margin-bottom: 0.35rem; }
.step p { font-size: 0.95rem; }
.step .tag {
  display: inline-block;
  font-family: var(--font-head);
  font-size: 0.68rem;
  font-weight: 700;
  letter-spacing: 0.08em;
  text-transform: uppercase;
  color: var(--xp-midnight);
  background: var(--xp-tint);
  border-radius: 3px;
  padding: 0.2rem 0.5rem;
  margin-top: 0.6rem;
}

/* ---------- Cross-link callout (sellers) ---------- */
.crosslink {
  background: var(--xp-tint);
  border-left: 4px solid var(--xp-gold);
  border-radius: 4px;
  padding: 1.3rem 1.5rem;
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 1.2rem;
  flex-wrap: wrap;
}
.crosslink p { color: var(--xp-ink); font-size: 0.97rem; }

/* ---------- FAQ ---------- */
.faq-list { max-width: 820px; margin: 0 auto; }
.faq-item { border-bottom: 1px solid var(--xp-border); }
.faq-item summary {
  cursor: pointer;
  list-style: none;
  display: flex;
  justify-content: space-between;
  align-items: center;
  gap: 1rem;
  padding: 1.15rem 0.2rem;
  font-family: var(--font-head);
  font-weight: 700;
  font-size: 1rem;
  color: var(--xp-midnight);
}
.faq-item summary::-webkit-details-marker { display: none; }
.faq-item summary::after {
  content: "+";
  font-size: 1.4rem;
  color: var(--xp-gold-text);
  flex-shrink: 0;
  transition: transform 0.2s;
}
.faq-item[open] summary::after { transform: rotate(45deg); }
.faq-item .faq-body { padding: 0 0.2rem 1.3rem; font-size: 0.96rem; color: var(--xp-steel); max-width: 700px; }
.faq-item .faq-body p + p { margin-top: 0.7rem; }

/* ---------- Closing / contact (navy) ---------- */
.closing { position: relative; overflow: hidden; padding: 6rem 0 5.5rem; }
.closing-ridge {
  position: absolute;
  left: 0; right: 0; top: -2px;
  height: 38%;
  min-height: 160px;
  transform: scaleY(-1);
  opacity: 0.16;
  pointer-events: none;
}
.closing-ridge svg, .closing-ridge img { width: 100%; height: 100%; display: block; }
.closing .wrap { position: relative; z-index: 2; }

.talk-grid {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 3rem;
  align-items: start;
}
.talk-copy h2 { font-size: clamp(1.7rem, 3.4vw, 2.4rem); margin-bottom: 1rem; }
.talk-copy .lede { font-size: 1.05rem; margin-bottom: 1.6rem; }
.talk-points { list-style: none; margin: 0 0 1.8rem; }
.talk-points li {
  position: relative;
  padding-left: 1.6rem;
  margin-bottom: 0.75rem;
  color: #C4CBD8;
  font-size: 0.97rem;
}
.talk-points li::before {
  content: "";
  position: absolute;
  left: 0; top: 0.48em;
  width: 9px; height: 9px;
  background: var(--xp-gold);
  border-radius: 1px;
}
.talk-alt { font-size: 0.92rem; }

/* CTA panel: white card inside navy — override inherited light-on-dark rules */
.cta-panel {
  background: var(--xp-white);
  border-radius: var(--radius);
  padding: 2rem 1.9rem;
  box-shadow: 0 18px 50px rgba(0,0,0,0.28);
}
.cta-panel h3 { color: var(--xp-midnight); font-size: 1.2rem; margin-bottom: 0.4rem; }
.cta-panel > p { color: var(--xp-steel); font-size: 0.92rem; margin-bottom: 1.3rem; }
.cta-panel label {
  display: block;
  font-family: var(--font-head);
  font-size: 0.78rem;
  font-weight: 700;
  color: var(--xp-midnight);
  margin: 0.9rem 0 0.3rem;
}
.cta-panel input, .cta-panel select, .cta-panel textarea {
  width: 100%;
  padding: 0.65rem 0.75rem;
  border: 1px solid var(--xp-border);
  border-radius: 4px;
  font-family: var(--font-body);
  font-size: 0.95rem;
  color: var(--xp-ink);
  background: var(--xp-white);
}
.cta-panel textarea { min-height: 88px; resize: vertical; }
.cta-panel .btn { width: 100%; margin-top: 1.3rem; text-align: center; }
.cta-panel .form-note { margin-top: 0.8rem; font-size: 0.78rem; color: var(--xp-steel); text-align: center; }
.form-status { margin-top: 0.9rem; font-size: 0.9rem; text-align: center; display: none; }
.form-status.ok { display: block; color: #1D6B3A; }
.form-status.err { display: block; color: #A33A2A; }

@media (max-width: 860px) {
  .talk-grid { grid-template-columns: 1fr; }
}

/* ---------- Footer ---------- */
.site-footer {
  background: var(--xp-midnight-deep);
  color: #9AA4B8;
  padding: 2.4rem 0;
  font-size: 0.86rem;
}
.site-footer .wrap {
  display: flex;
  justify-content: space-between;
  gap: 1.5rem;
  flex-wrap: wrap;
  align-items: center;
}
.site-footer a { color: #C4CBD8; text-decoration: none; }
.site-footer a:hover { color: var(--xp-gold); }
.footer-brand { font-family: var(--font-head); font-weight: 700; color: var(--xp-white); }
.footer-brand span { color: var(--xp-gold); }

/* ---------- Reveal on scroll ---------- */
.reveal { opacity: 0; transform: translateY(18px); transition: opacity 0.55s ease, transform 0.55s ease; }
.reveal.in { opacity: 1; transform: none; }
@media (prefers-reduced-motion: reduce) {
  html { scroll-behavior: auto; }
  .reveal { opacity: 1; transform: none; transition: none; }
}

/* ---------- Mobile nav ---------- */
@media (max-width: 820px) {
  .nav-toggle { display: block; }
  .nav-links {
    display: none;
    position: absolute;
    top: 68px; left: 0; right: 0;
    background: var(--xp-white);
    border-bottom: 1px solid var(--xp-border);
    flex-direction: column;
    padding: 1.2rem 24px 1.5rem;
    gap: 1.1rem;
    align-items: flex-start;
  }
  .nav-links.open { display: flex; }
  section { padding: 3.6rem 0; }
  .case-grid, .levers { grid-template-columns: 1fr; }
  .headline-stats { grid-template-columns: 1fr 1fr; }
  .stat.hi { grid-column: 1 / -1; }
  .step { grid-template-columns: 48px 1fr; padding: 1.15rem 1.2rem; }
}