/* College Cash marketing site: shared styles for index, signal-engine and faq. */
:root {
  --navy: #0B1F3A;
  --navy-deep: #06111F;
  --navy-card: #0F2640;
  --indigo: #2D3A8C;
  --parakeet: #00C48C;
  --parakeet-dim: rgba(0,196,140,0.12);
  --fog: #C8D6E5;
  --fog-light: #E8EDF4;
  --white: #FFFFFF;
  --muted: #8A9AB5;
  --text-secondary: #A3B1C9;
  --baseline-bar: #7D8FB0;
  --border: rgba(125,143,176,0.22);
  --font-heading: 'Plus Jakarta Sans', -apple-system, BlinkMacSystemFont, sans-serif;
  --font-body: 'Inter', -apple-system, BlinkMacSystemFont, sans-serif;
  --font-mono: 'DM Mono', ui-monospace, monospace;
}

*, *::before, *::after { box-sizing: border-box; margin: 0; padding: 0; }
html { scroll-behavior: smooth; scroll-padding-top: 88px; }
body {
  font-family: var(--font-body);
  background: var(--navy);
  color: var(--fog);
  line-height: 1.7;
  font-size: 16px;
  -webkit-font-smoothing: antialiased;
}
img { max-width: 100%; height: auto; display: block; }
a { color: var(--parakeet); text-decoration: none; }
a:hover { text-decoration: underline; }
:focus-visible { outline: 2px solid var(--parakeet); outline-offset: 3px; border-radius: 4px; }
@media (prefers-reduced-motion: reduce) {
  html { scroll-behavior: auto; }
  *, *::before, *::after { transition: none !important; animation: none !important; }
}

.skip-link {
  position: absolute; left: 16px; top: -48px; z-index: 2000;
  background: var(--parakeet); color: var(--navy-deep); font-weight: 700;
  padding: 10px 16px; border-radius: 8px;
}
.skip-link:focus { top: 12px; }

.container { max-width: 1200px; margin: 0 auto; padding: 0 24px; }
.container-narrow { max-width: 820px; margin: 0 auto; padding: 0 24px; }
.section { padding: 96px 0; }
.section-alt { background: var(--navy-deep); }
.center { text-align: center; }
.section-label {
  font-family: var(--font-mono);
  font-size: 13px;
  font-weight: 500;
  letter-spacing: 0.16em;
  text-transform: uppercase;
  color: var(--parakeet);
  margin-bottom: 16px;
}
.section-headline {
  font-family: var(--font-heading);
  font-weight: 800;
  font-size: clamp(1.75rem, 3.6vw, 2.6rem);
  color: var(--white);
  line-height: 1.2;
  letter-spacing: -0.02em;
  margin-bottom: 20px;
  max-width: 860px;
}
.center .section-headline, .center .section-sub { margin-left: auto; margin-right: auto; }
.section-sub { font-size: 1.08rem; color: var(--fog); max-width: 700px; line-height: 1.8; }
.section-sub + .section-sub { margin-top: 16px; }
.closing-line {
  margin-top: 40px;
  font-family: var(--font-heading);
  font-weight: 700;
  font-size: clamp(1.15rem, 2.2vw, 1.4rem);
  color: var(--white);
  line-height: 1.45;
  max-width: 820px;
}
.center .closing-line { margin-left: auto; margin-right: auto; }
.closing-line .accent { color: var(--parakeet); }

/* Buttons */
.btn-primary, .btn-outline {
  display: inline-flex; align-items: center; justify-content: center; gap: 8px;
  font-family: var(--font-heading); font-size: 15px; border-radius: 10px;
  min-height: 48px; text-decoration: none; transition: transform 0.2s, box-shadow 0.2s, border-color 0.2s, color 0.2s;
}
.btn-primary {
  font-weight: 700; color: var(--navy-deep); background: var(--parakeet);
  padding: 13px 28px; box-shadow: 0 4px 20px rgba(0,196,140,0.22);
}
.btn-primary:hover { text-decoration: none; transform: translateY(-2px); box-shadow: 0 8px 28px rgba(0,196,140,0.32); }
.btn-outline {
  font-weight: 600; color: var(--fog-light); background: transparent;
  border: 1.5px solid rgba(125,143,176,0.45); padding: 12px 24px;
}
.btn-outline:hover { text-decoration: none; border-color: var(--parakeet); color: var(--parakeet); }
.actions { display: flex; flex-wrap: wrap; gap: 14px; align-items: center; }
.center .actions { justify-content: center; }
.text-link { font-weight: 600; }
.text-link::after { content: " \2192"; }

/* Nav */
.nav {
  position: sticky; top: 0; z-index: 1000;
  background: rgba(11,31,58,0.94);
  backdrop-filter: blur(14px); -webkit-backdrop-filter: blur(14px);
  border-bottom: 1px solid var(--border);
}
.nav-inner {
  max-width: 1200px; margin: 0 auto; padding: 0 24px; height: 72px;
  display: flex; align-items: center; justify-content: space-between; gap: 24px;
}
.nav-logo {
  font-family: var(--font-heading); font-weight: 800; font-size: 23px;
  color: var(--white); letter-spacing: -0.02em; white-space: nowrap;
}
.nav-logo:hover { text-decoration: none; }
.nav-logo span { color: var(--parakeet); }
.nav-links { display: flex; align-items: center; gap: 28px; list-style: none; }
.nav-links a { font-size: 14px; font-weight: 500; color: var(--text-secondary); }
.nav-links a:hover, .nav-links a[aria-current="page"] { color: var(--white); text-decoration: none; }
.nav-cta {
  font-family: var(--font-heading); font-weight: 700; font-size: 14px;
  color: var(--navy-deep); background: var(--parakeet); border-radius: 8px;
  padding: 10px 20px; white-space: nowrap;
}
.nav-cta:hover { text-decoration: none; box-shadow: 0 4px 16px rgba(0,196,140,0.3); }
.nav-toggle {
  display: none; align-items: center; justify-content: center;
  width: 44px; height: 44px; background: none; border: 1px solid var(--border);
  border-radius: 8px; color: var(--white); cursor: pointer;
}
.nav-toggle svg { width: 22px; height: 22px; stroke: currentColor; stroke-width: 2; fill: none; stroke-linecap: round; }
.nav-toggle .icon-close { display: none; }
.nav-toggle[aria-expanded="true"] .icon-open { display: none; }
.nav-toggle[aria-expanded="true"] .icon-close { display: block; }
.mobile-menu {
  display: none; flex-direction: column; gap: 4px;
  padding: 12px 24px 24px; border-top: 1px solid var(--border);
  background: var(--navy);
}
.mobile-menu.open { display: flex; }
.mobile-menu a { font-size: 16px; font-weight: 500; color: var(--fog); padding: 12px 0; }
.mobile-menu .btn-primary { margin-top: 8px; }
@media (max-width: 900px) {
  .nav-links, .nav-cta-desktop { display: none; }
  .nav-toggle { display: inline-flex; }
}

/* Hero */
.hero { position: relative; overflow: hidden; padding: 80px 0 96px; }
.hero::before {
  content: ""; position: absolute; inset: 0; pointer-events: none;
  background:
    radial-gradient(circle at 85% 10%, rgba(0,196,140,0.10), transparent 45%),
    radial-gradient(circle at 5% 95%, rgba(45,58,140,0.25), transparent 45%);
}
.hero-inner {
  position: relative; display: grid; grid-template-columns: 1fr 1.1fr;
  gap: 56px; align-items: center;
}
.badge {
  display: inline-block; font-family: var(--font-mono); font-size: 12px; font-weight: 500;
  letter-spacing: 0.1em; text-transform: uppercase; color: var(--parakeet);
  background: var(--parakeet-dim); border: 1px solid rgba(0,196,140,0.28);
  border-radius: 100px; padding: 6px 14px; margin-bottom: 22px;
}
.hero-headline {
  font-family: var(--font-heading); font-weight: 800;
  font-size: clamp(2.2rem, 4.8vw, 3.5rem); color: var(--white);
  line-height: 1.1; letter-spacing: -0.03em; margin-bottom: 20px;
}
.hero-subline {
  font-family: var(--font-heading); font-weight: 700; font-size: 1.2rem;
  color: var(--parakeet); line-height: 1.45; margin-bottom: 18px;
}
.hero-body { font-size: 1.08rem; color: var(--fog); line-height: 1.8; margin-bottom: 16px; max-width: 590px; }
.hero-support { font-size: 0.98rem; color: var(--text-secondary); margin-bottom: 32px; max-width: 590px; }
.patent-line { margin-top: 32px; font-family: var(--font-mono); font-size: 12px; color: var(--muted); letter-spacing: 0.04em; }
@media (max-width: 960px) {
  .hero { padding: 48px 0 72px; }
  .hero-inner { grid-template-columns: 1fr; gap: 40px; }
}

/* Screenshots */
.shot { margin: 0; }
.shot-frame {
  background: var(--navy-card); border: 1px solid var(--border); border-radius: 14px;
  overflow: hidden; box-shadow: 0 24px 60px rgba(0,0,0,0.35);
}
.shot-frame img { width: 100%; }
.shot-frame a { display: block; cursor: zoom-in; }
.shot figcaption { margin-top: 12px; font-size: 0.85rem; color: var(--muted); line-height: 1.55; }
.shot-label {
  display: block; font-family: var(--font-mono); font-size: 12px; letter-spacing: 0.14em;
  text-transform: uppercase; color: var(--parakeet); margin-bottom: 12px;
}
.shot-wide { margin-top: 48px; }
.shot-narrow { max-width: 820px; margin-left: auto; margin-right: auto; }

/* Cards */
.card-grid { display: grid; gap: 20px; margin-top: 48px; }
.cols-2 { grid-template-columns: repeat(2, 1fr); }
.cols-3 { grid-template-columns: repeat(3, 1fr); }
.cols-4 { grid-template-columns: repeat(4, 1fr); }
.cols-5 { grid-template-columns: repeat(5, 1fr); }
@media (max-width: 1080px) { .cols-5 { grid-template-columns: repeat(3, 1fr); } .cols-4 { grid-template-columns: repeat(2, 1fr); } }
@media (max-width: 860px) { .cols-3, .cols-5 { grid-template-columns: repeat(2, 1fr); } }
@media (max-width: 600px) { .cols-2, .cols-3, .cols-4, .cols-5 { grid-template-columns: 1fr; } }
.card {
  background: var(--navy-card); border: 1px solid var(--border); border-radius: 14px;
  padding: 28px 24px;
}
.card-kicker {
  font-family: var(--font-mono); font-size: 12px; letter-spacing: 0.12em;
  text-transform: uppercase; color: var(--parakeet); margin-bottom: 10px;
}
.card h3 {
  font-family: var(--font-heading); font-weight: 700; font-size: 1.06rem;
  color: var(--white); line-height: 1.35; margin-bottom: 10px;
}
.card p { font-size: 0.93rem; color: var(--text-secondary); line-height: 1.7; }
.card-accent { box-shadow: inset 0 3px 0 0 var(--parakeet); }

/* Problem */
.problem-scenarios { list-style: none; display: grid; gap: 12px; margin: 32px 0; }
.problem-scenarios li {
  padding: 16px 20px; background: var(--navy-card); border: 1px solid var(--border);
  border-left: 3px solid var(--parakeet); border-radius: 10px; color: var(--fog-light);
}

/* Results */
.stat-row { display: grid; grid-template-columns: repeat(4, 1fr); gap: 16px; margin-top: 40px; }
@media (max-width: 860px) { .stat-row { grid-template-columns: repeat(2, 1fr); } }
.stat { background: var(--navy-card); border: 1px solid var(--border); border-radius: 12px; padding: 22px 20px; }
.stat-num {
  font-family: var(--font-heading); font-weight: 800; font-size: clamp(1.6rem, 3vw, 2.1rem);
  color: var(--white); line-height: 1.1; margin-bottom: 6px;
}
.stat-num.accent { color: var(--parakeet); }
.stat-label { font-size: 0.88rem; color: var(--text-secondary); line-height: 1.5; }
.results-grid { display: grid; grid-template-columns: 1fr 1fr; gap: 28px; margin-top: 28px; align-items: start; }
.results-grid > * { min-width: 0; }
@media (max-width: 1100px) { .results-grid { grid-template-columns: 1fr; } }
.panel { background: var(--navy-card); border: 1px solid var(--border); border-radius: 14px; padding: 28px 24px; }
.panel-title { font-family: var(--font-heading); font-weight: 700; font-size: 1rem; color: var(--white); margin-bottom: 4px; }
.panel-sub { font-size: 0.85rem; color: var(--muted); margin-bottom: 20px; }
.legend { display: flex; flex-wrap: wrap; gap: 18px; margin-bottom: 20px; font-size: 0.85rem; color: var(--fog); }
.legend span { display: inline-flex; align-items: center; gap: 8px; }
.swatch { width: 12px; height: 12px; border-radius: 3px; display: inline-block; }
.swatch.base { background: var(--baseline-bar); }
.swatch.engine { background: var(--parakeet); }
.bar-group { margin-bottom: 22px; }
.bar-group:last-child { margin-bottom: 0; }
.bar-group-label { display: flex; justify-content: space-between; gap: 12px; font-size: 0.88rem; color: var(--fog-light); font-weight: 600; margin-bottom: 8px; }
.bar-group-label .lift { color: var(--parakeet); font-family: var(--font-mono); font-weight: 500; }
.bar-row { display: grid; grid-template-columns: 1fr 44px; align-items: center; gap: 10px; margin-bottom: 4px; }
.bar-track { height: 16px; }
.bar { height: 16px; border-radius: 0 4px 4px 0; min-width: 4px; }
.bar.base { background: var(--baseline-bar); }
.bar.engine { background: var(--parakeet); }
.bar-value { font-family: var(--font-mono); font-size: 0.85rem; color: var(--fog-light); text-align: right; }
.table-wrap { overflow-x: auto; }
.results-table { width: 100%; border-collapse: collapse; font-size: 0.92rem; }
.results-table caption { text-align: left; font-family: var(--font-heading); font-weight: 700; color: var(--white); padding-bottom: 4px; }
.results-table th, .results-table td { padding: 12px 10px; border-bottom: 1px solid var(--border); }
.results-table thead th { font-size: 0.78rem; font-weight: 600; color: var(--muted); text-transform: uppercase; letter-spacing: 0.06em; text-align: right; white-space: nowrap; vertical-align: bottom; line-height: 1.5; }
.results-table thead th:first-child, .results-table tbody th { text-align: left; }
.results-table tbody th { color: var(--fog-light); font-weight: 600; }
.results-table td { text-align: right; color: var(--fog); font-variant-numeric: tabular-nums; }
.results-table td.lift { color: var(--parakeet); font-weight: 700; }
.table-note { margin-top: 12px; font-size: 0.82rem; color: var(--muted); }
@media (max-width: 480px) {
  .panel { padding: 20px 12px; }
  .results-table { font-size: 0.82rem; }
  .results-table th, .results-table td { padding: 10px 3px; }
  .results-table thead th { font-size: 0.7rem; text-transform: none; letter-spacing: 0; }
}
@media (max-width: 340px) {
  .container { padding: 0 16px; }
  .panel { padding: 18px 8px; }
  .results-table { font-size: 0.78rem; }
  .results-table thead th { font-size: 0.66rem; }
}
.disclosure {
  margin-top: 24px; padding: 20px 22px; border: 1px solid rgba(240,165,0,0.45);
  border-left: 4px solid #F0A500; border-radius: 10px; background: rgba(240,165,0,0.07);
  color: var(--fog-light); font-size: 0.95rem; line-height: 1.7;
}
.disclosure strong { color: #F6C76A; }
.method { margin-top: 28px; }
.method h3 { font-family: var(--font-heading); font-size: 1.05rem; color: var(--white); margin-bottom: 10px; }
.method ul { padding-left: 20px; color: var(--text-secondary); font-size: 0.95rem; display: grid; gap: 6px; }

/* Steps */
.steps { list-style: none; display: grid; grid-template-columns: repeat(3, 1fr); gap: 20px; margin-top: 48px; }
@media (max-width: 860px) { .steps { grid-template-columns: 1fr; } }
.step-num {
  width: 40px; height: 40px; border-radius: 50%; border: 2px solid var(--parakeet);
  display: flex; align-items: center; justify-content: center;
  font-family: var(--font-heading); font-weight: 800; color: var(--parakeet); margin-bottom: 16px;
}
.card p + p { margin-top: 10px; }

/* Split layout: text + screenshot */
.split { display: grid; grid-template-columns: 1fr 1fr; gap: 48px; align-items: center; margin-top: 48px; }
@media (max-width: 960px) { .split { grid-template-columns: 1fr; gap: 32px; } }

/* Pilot */
.pilot-box {
  margin-top: 40px; display: grid; grid-template-columns: 1.4fr 1fr; gap: 28px;
  background: var(--navy-card); border: 1px solid rgba(0,196,140,0.3);
  border-radius: 16px; padding: 36px 32px; box-shadow: inset 0 3px 0 0 var(--parakeet);
}
@media (max-width: 860px) { .pilot-box { grid-template-columns: 1fr; padding: 28px 22px; } }
.check-list { list-style: none; display: grid; grid-template-columns: 1fr 1fr; gap: 10px 20px; }
@media (max-width: 600px) { .check-list { grid-template-columns: 1fr; } }
.check-list li { position: relative; padding-left: 26px; color: var(--fog); font-size: 0.95rem; line-height: 1.5; }
.check-list li::before {
  content: ""; position: absolute; left: 2px; top: 6px; width: 12px; height: 7px;
  border-left: 2px solid var(--parakeet); border-bottom: 2px solid var(--parakeet); transform: rotate(-45deg);
}
.pilot-facts { display: grid; gap: 16px; align-content: start; }
.pilot-fact { padding-bottom: 16px; border-bottom: 1px solid var(--border); }
.pilot-fact:last-of-type { border-bottom: none; }
.pilot-fact dt { font-family: var(--font-mono); font-size: 12px; letter-spacing: 0.12em; text-transform: uppercase; color: var(--muted); }
.pilot-fact dd { font-family: var(--font-heading); font-weight: 700; color: var(--white); font-size: 1.1rem; margin-top: 4px; }
.pilot-fact dd small { display: block; font-family: var(--font-body); font-weight: 400; font-size: 0.85rem; color: var(--text-secondary); margin-top: 2px; }

/* Credibility */
.cred-list { list-style: none; display: grid; grid-template-columns: repeat(3, 1fr); gap: 16px; margin-top: 40px; }
@media (max-width: 860px) { .cred-list { grid-template-columns: repeat(2, 1fr); } }
@media (max-width: 520px) { .cred-list { grid-template-columns: 1fr; } }
.cred-list li { background: var(--navy-card); border: 1px solid var(--border); border-radius: 12px; padding: 20px; }
.cred-name { font-family: var(--font-heading); font-weight: 700; color: var(--white); font-size: 1rem; }
.cred-desc { font-size: 0.86rem; color: var(--text-secondary); margin-top: 4px; line-height: 1.55; }
.cred-note { margin-top: 20px; font-size: 0.82rem; color: var(--muted); }

/* Team (text only) */
.team-grid { display: grid; grid-template-columns: 1fr 1fr; gap: 20px; margin-top: 40px; }
@media (max-width: 760px) { .team-grid { grid-template-columns: 1fr; } }
.team-card { background: var(--navy-card); border: 1px solid var(--border); border-left: 3px solid var(--parakeet); border-radius: 14px; padding: 30px 28px; }
.team-name { font-family: var(--font-heading); font-weight: 800; font-size: 1.25rem; color: var(--white); }
.team-role { font-family: var(--font-mono); font-size: 12.5px; color: var(--parakeet); letter-spacing: 0.04em; margin: 6px 0 16px; line-height: 1.6; }
.team-bio { font-size: 0.93rem; color: var(--text-secondary); line-height: 1.75; }

/* Closing CTA */
.closing { text-align: center; position: relative; overflow: hidden; }
.closing::before {
  content: ""; position: absolute; inset: 0; pointer-events: none;
  background: radial-gradient(circle at 50% 120%, rgba(0,196,140,0.14), transparent 55%);
}
.closing > * { position: relative; }
.closing .section-sub { margin: 0 auto 32px; }
.demo-note { margin-top: 18px; font-size: 0.85rem; color: var(--muted); max-width: 560px; margin-left: auto; margin-right: auto; }
.contact-line { margin-top: 28px; font-family: var(--font-mono); font-size: 14px; color: var(--muted); }

/* Footer */
.footer { background: var(--navy-deep); border-top: 1px solid var(--border); padding: 40px 0 32px; }
.footer-inner { display: flex; flex-wrap: wrap; justify-content: space-between; align-items: center; gap: 20px; }
.footer-logo { font-family: var(--font-heading); font-weight: 800; font-size: 19px; color: var(--fog); }
.footer-logo span { color: var(--parakeet); }
.footer-logo:hover { text-decoration: none; }
.footer-links { display: flex; flex-wrap: wrap; gap: 8px 22px; list-style: none; }
.footer-links a { font-size: 14px; color: var(--text-secondary); }
.footer-meta { width: 100%; margin-top: 12px; display: flex; flex-wrap: wrap; justify-content: space-between; gap: 8px; font-size: 13px; color: var(--muted); }

/* Signal Engine page */
.page-hero { padding: 72px 0 56px; border-bottom: 1px solid var(--border); }
.page-hero .section-headline { font-size: clamp(2rem, 4.2vw, 3rem); }
.stage-list { list-style: none; display: grid; gap: 16px; margin-top: 40px; }
.stage {
  display: grid; grid-template-columns: 72px 1fr; gap: 20px;
  background: var(--navy-card); border: 1px solid var(--border); border-radius: 14px; padding: 24px;
}
@media (max-width: 600px) { .stage { grid-template-columns: 1fr; gap: 8px; } }
.stage-num { font-family: var(--font-mono); font-size: 13px; color: var(--parakeet); letter-spacing: 0.08em; padding-top: 3px; }
.stage h3 { font-family: var(--font-heading); font-weight: 700; font-size: 1.08rem; color: var(--white); margin-bottom: 6px; }
.stage p { font-size: 0.95rem; color: var(--text-secondary); line-height: 1.7; }
.stage p + p { margin-top: 8px; }
.stage.highlight { border-color: rgba(0,196,140,0.35); box-shadow: inset 3px 0 0 0 var(--parakeet); }
.prose h2 { font-family: var(--font-heading); font-weight: 800; font-size: 1.5rem; color: var(--white); margin: 56px 0 14px; letter-spacing: -0.01em; }
.prose h2:first-child { margin-top: 0; }
.prose p { color: var(--fog); margin-bottom: 14px; max-width: 760px; }
.prose ul { padding-left: 20px; color: var(--fog); display: grid; gap: 8px; margin-bottom: 14px; max-width: 760px; }
.callout {
  margin-top: 40px; padding: 24px 28px; background: var(--parakeet-dim);
  border: 1px solid rgba(0,196,140,0.25); border-radius: 12px; color: var(--white);
  font-family: var(--font-heading); font-weight: 600; line-height: 1.6;
}

/* FAQ page */
.faq-group { margin-top: 48px; }
.faq-group:first-child { margin-top: 0; }
.faq-group h2 { font-family: var(--font-mono); font-size: 13px; font-weight: 500; letter-spacing: 0.14em; text-transform: uppercase; color: var(--parakeet); margin-bottom: 14px; }
.faq-list { display: grid; gap: 10px; }
.faq-list details { background: var(--navy-card); border: 1px solid var(--border); border-radius: 12px; }
.faq-list details[open] { border-color: rgba(0,196,140,0.35); }
.faq-list summary {
  list-style: none; cursor: pointer; display: flex; justify-content: space-between; align-items: center; gap: 16px;
  padding: 18px 22px; font-family: var(--font-heading); font-weight: 700; font-size: 1rem; color: var(--white); line-height: 1.45;
}
.faq-list summary::-webkit-details-marker { display: none; }
.faq-list summary::after {
  content: "+"; flex-shrink: 0; width: 28px; height: 28px; border-radius: 50%;
  display: flex; align-items: center; justify-content: center;
  background: var(--parakeet-dim); color: var(--parakeet); font-size: 18px; font-weight: 600;
}
.faq-list details[open] summary::after { content: "\2212"; background: var(--parakeet); color: var(--navy-deep); }
.faq-answer { padding: 0 22px 20px; color: var(--fog); font-size: 0.96rem; line-height: 1.75; }
.faq-answer p + p, .faq-answer p + ul, .faq-answer ul + p { margin-top: 10px; }
.faq-answer ul { padding-left: 20px; display: grid; gap: 4px; }