/* ClickCert landing — CSS-variable system, light theme, indigo accent. */
:root {
  --ink: #191b23;
  --ink-2: #454854;
  --paper: #fbfbf9;
  --card: #ffffff;
  --accent: #4f46e5;
  --accent-dark: #3f3ac4;
  --accent-soft: #eceafd;
  --hairline: rgba(25, 27, 35, .08);
  --muted: #6b6e7b;
  --radius: 28px;
  --shadow-1: 0 1px 2px rgba(25,27,35,.04), 0 8px 24px rgba(25,27,35,.06);
  --shadow-2: 0 2px 4px rgba(25,27,35,.05), 0 18px 48px rgba(25,27,35,.10);
}

* { box-sizing: border-box; }
html { scroll-behavior: smooth; }
@media (prefers-reduced-motion: reduce) {
  html { scroll-behavior: auto; }
  .reveal, .float { animation: none !important; transition: none !important; opacity: 1 !important; transform: none !important; }
}
body {
  margin: 0; background: var(--paper); color: var(--ink);
  font: 16px/1.6 "Inter", system-ui, -apple-system, "Segoe UI", sans-serif;
  -webkit-font-smoothing: antialiased; text-rendering: optimizeLegibility;
}
h1, h2, h3 { line-height: 1.15; margin: 0; }
h1 { font: 400 clamp(2.4rem, 6vw, 4.2rem)/1.05 "Instrument Serif", Georgia, serif; letter-spacing: -0.01em; }
h1 em { font-style: italic; color: var(--accent); }
h2 { font: 400 clamp(1.8rem, 3.6vw, 2.6rem)/1.15 "Instrument Serif", Georgia, serif; }
h3 { font-weight: 600; font-size: 1.05rem; }
p { margin: 0; }
a { color: inherit; }
:focus-visible { outline: 3px solid var(--accent); outline-offset: 2px; border-radius: 6px; }

/* --- account-disabled modal (same card language as the app's About modal) --- */
.modal-backdrop { position: fixed; inset: 0; background: rgba(25, 27, 35, .45);
  backdrop-filter: blur(4px); z-index: 100; display: flex; align-items: flex-start;
  justify-content: center; padding: 3rem 1rem; overflow-y: auto; }
.modal-backdrop[hidden] { display: none; }
.modal { background: var(--card); border: 1px solid var(--hairline);
  border-radius: var(--radius); max-width: 30rem; width: 100%; padding: 1.75rem 1.9rem;
  position: relative; box-shadow: var(--shadow-2); }
.modal h2 { font: 400 1.9rem/1.15 "Instrument Serif", Georgia, serif; margin-top: 0; }
.modal p { font-size: .95rem; color: var(--ink-2); }
.modal-close { position: absolute; top: .7rem; right: .9rem; background: var(--paper);
  border-radius: 50%; width: 2rem; height: 2rem; font-size: 1.3rem; line-height: 1;
  cursor: pointer; color: var(--muted); border: 1px solid var(--hairline);
  display: flex; align-items: center; justify-content: center;
  transition: color .15s, border-color .15s; }
.modal-close:hover { color: var(--ink); border-color: var(--accent); }
.skip { position: absolute; left: -999px; top: 0; background: var(--card); padding: .5rem 1rem; z-index: 100; border-radius: 0 0 12px 0; }
.skip:focus { left: 0; }

/* ---------- nav ---------- */
.nav { position: sticky; top: 0; z-index: 50; transition: background .25s, box-shadow .25s; background: transparent; }
.nav.scrolled, .nav.solid { background: rgba(251,251,249,.82); backdrop-filter: blur(14px); -webkit-backdrop-filter: blur(14px); box-shadow: 0 1px 0 var(--hairline); }
.nav-inner { max-width: 1120px; margin: 0 auto; padding: 14px 24px; display: flex; align-items: center; gap: 24px; }
.logo { font-weight: 700; font-size: 1.15rem; text-decoration: none; letter-spacing: -0.02em; }
.logo-dot { color: var(--accent); }

/* brand lockup: bulb mark + wordmark (landing theme) */
.logo-lockup { display: inline-flex; align-items: center; gap: .45rem;
  text-decoration: none; color: var(--ink); }
.logo-lockup .logo-mark { width: 30px; height: 30px; flex: none;
  --logo-ink: var(--ink); --logo-accent: var(--accent); }
.logo-lockup .logo-word { font-weight: 800; font-size: 1.28rem;
  letter-spacing: -.03em; line-height: 1; }
.nav .logo-lockup .logo-word, .foot-brand .logo-word { color: var(--ink); }
.nav-links { display: flex; gap: 22px; margin-left: auto; }
.nav-links a, .signin { text-decoration: none; color: var(--ink-2); font-weight: 500; font-size: .95rem; position: relative; }
.nav-links a::after, .signin::after { content: ""; position: absolute; left: 0; bottom: -3px; height: 1.5px; width: 100%; background: var(--accent); transform: scaleX(0); transform-origin: left; transition: transform .2s; }
.nav-links a:hover::after, .signin:hover::after { transform: scaleX(1); }
.nav-links a:hover, .signin:hover { color: var(--ink); }
.nav-cta { display: flex; align-items: center; gap: 18px; margin-left: 8px; }
@media (max-width: 780px) { .nav-links { display: none; } .nav-cta { margin-left: auto; } }

/* ---------- buttons ---------- */
.btn { display: inline-flex; align-items: center; gap: 8px; border-radius: 999px; font-weight: 600; text-decoration: none; white-space: nowrap; transition: transform .15s, box-shadow .15s, background .15s; }
.btn-primary { background: var(--accent); color: #fff; padding: 10px 20px; box-shadow: 0 1px 2px rgba(79,70,229,.3), 0 6px 16px rgba(79,70,229,.25); }
.btn-primary:hover { background: var(--accent-dark); transform: translateY(-1px); box-shadow: 0 2px 4px rgba(79,70,229,.32), 0 10px 24px rgba(79,70,229,.3); }
.btn-primary:active { transform: translateY(0); }
.btn-lg { padding: 14px 28px; font-size: 1.05rem; }
.btn-light { background: #fff; color: var(--ink); padding: 14px 28px; }
.btn-light:hover { transform: translateY(-1px); box-shadow: 0 10px 28px rgba(0,0,0,.25); }
.btn-ghost { color: #fff; padding: 14px 28px; box-shadow: inset 0 0 0 1.5px rgba(255,255,255,.45); }
.btn-ghost:hover { box-shadow: inset 0 0 0 1.5px rgba(255,255,255,.9); transform: translateY(-1px); }
.link-arrow { display: inline-flex; align-items: center; gap: 6px; font-weight: 600; text-decoration: none; color: var(--accent); }
.link-arrow svg { width: 18px; height: 18px; transition: transform .15s; }
.link-arrow:hover svg { transform: translateX(3px); }

/* ---------- hero ---------- */
.hero { position: relative; overflow: hidden; padding: 72px 24px 56px; }
.blob { position: absolute; pointer-events: none; color: var(--accent-soft); opacity: .75; }
.blob-a { width: 620px; top: -180px; right: -140px; color: #e6f4ef; opacity: .9; }
.blob-b { width: 420px; bottom: -160px; left: -120px; opacity: .55; }
.hero-inner { max-width: 1120px; margin: 0 auto; display: grid; grid-template-columns: 1.05fr .95fr; gap: 48px; align-items: center; position: relative; }
.eyebrow { font-size: .8rem; font-weight: 700; letter-spacing: .12em; text-transform: uppercase; color: var(--accent); margin: 0 0 14px; }
.hero .sub, .section-sub { color: var(--ink-2); font-size: 1.12rem; max-width: 34rem; margin-top: 18px; }
.cta-row { display: flex; align-items: center; gap: 26px; margin-top: 30px; flex-wrap: wrap; }
.cta-row-center { justify-content: center; }
.hero-note { margin-top: 16px; color: var(--muted); font-size: .9rem; }
@media (max-width: 880px) { .hero-inner { grid-template-columns: 1fr; gap: 40px; } .hero { padding-top: 48px; } }

/* ---------- grain ---------- */
body::after { content: ""; position: fixed; inset: 0; pointer-events: none; opacity: .05; z-index: 90; background-image: url("data:image/svg+xml,%3Csvg xmlns='http://www.w3.org/2000/svg' width='160' height='160'%3E%3Cfilter id='n'%3E%3CfeTurbulence type='fractalNoise' baseFrequency='0.9' numOctaves='2'/%3E%3C/filter%3E%3Crect width='160' height='160' filter='url(%23n)'/%3E%3C/svg%3E"); }

/* ---------- mock question card ---------- */
.hero-visual { display: flex; justify-content: center; }
.mock-card { background: var(--card); border-radius: 32px; padding: 26px 26px 20px; box-shadow: var(--shadow-2); max-width: 460px; width: 100%; border: 1px solid var(--hairline); }
.float { animation: float 7s ease-in-out infinite; }
@keyframes float { 0%,100% { transform: translateY(0); } 50% { transform: translateY(-9px); } }
.mock-card-top { display: flex; justify-content: space-between; align-items: center; margin-bottom: 14px; }
.mock-pill { background: var(--accent-soft); color: var(--accent-dark); font-size: .75rem; font-weight: 700; padding: 4px 12px; border-radius: 999px; }
.mock-count { color: var(--muted); font-size: .85rem; font-weight: 600; }
.mock-q { font-size: .98rem; line-height: 1.5; margin-bottom: 14px; }
.mock-opt { border: 1px solid var(--hairline); border-radius: 14px; padding: 10px 14px; font-size: .9rem; margin-top: 8px; color: var(--ink-2); display: flex; justify-content: space-between; align-items: center; }
.mock-correct { border-color: rgba(16,140,90,.45); background: rgba(16,140,90,.07); color: #0d5c3d; font-weight: 600; }
.mock-check { font-weight: 800; }
.mock-cite { display: flex; gap: 8px; align-items: center; color: var(--muted); font-size: .8rem; margin-top: 14px; border-top: 1px solid var(--hairline); padding-top: 12px; }
.mock-cite svg { width: 15px; height: 15px; flex: none; }

/* ---------- proof bar ---------- */
.proof { max-width: 1120px; margin: 0 auto; padding: 26px 24px 8px; border-top: 1px solid var(--hairline); }
.proof-label { text-align: center; font-size: .78rem; letter-spacing: .1em; text-transform: uppercase; color: var(--muted); font-weight: 600; }
.proof-row { display: flex; justify-content: space-around; flex-wrap: wrap; gap: 12px; margin-top: 18px; }
.proof-item { display: flex; align-items: baseline; gap: 8px; color: var(--muted); font-size: .92rem; }
.proof-num { font: 400 1.7rem "Instrument Serif", Georgia, serif; color: var(--ink); }

/* ---------- sections ---------- */
.section { max-width: 1120px; margin: 0 auto; padding: 88px 24px 0; scroll-margin-top: 84px; }
.section h2 { margin-bottom: 8px; }
.section-sub { margin-bottom: 36px; }
.grid-3 { display: grid; grid-template-columns: repeat(3, 1fr); gap: 20px; margin-top: 40px; }
@media (max-width: 880px) { .grid-3 { grid-template-columns: 1fr; } }
.card { background: var(--card); border-radius: var(--radius); padding: 26px; box-shadow: var(--shadow-1); border: 1px solid var(--hairline); transition: transform .2s, box-shadow .2s; }
.card:hover { transform: translateY(-4px); box-shadow: var(--shadow-2); }
.card h3 { margin: 16px 0 8px; }
.card p { color: var(--ink-2); font-size: .95rem; }
.icon { display: inline-flex; width: 44px; height: 44px; border-radius: 14px; background: var(--accent-soft); color: var(--accent-dark); display: inline-flex; align-items: center; justify-content: center; }
.icon svg { width: 22px; height: 22px; }

/* ---------- steps ---------- */
.steps { list-style: none; margin: 44px 0 0; padding: 0; display: grid; grid-template-columns: repeat(3, 1fr); gap: 28px; position: relative; }
@media (max-width: 880px) { .steps { grid-template-columns: 1fr; } }
.step { position: relative; }
.step:not(:last-child)::after {
  content: ""; position: absolute; top: 21px; left: 22px;
  width: 100%; height: 2px;
  background: linear-gradient(90deg, var(--accent) 0%, rgba(79,70,229,.25) 100%);
}
@media (max-width: 880px) { .step::after { display: none; } }
.step-n { display: flex; width: 44px; height: 44px; border-radius: 50%; background: var(--accent); color: #fff; font-weight: 700; align-items: center; justify-content: center; position: relative; z-index: 1; box-shadow: 0 0 0 6px var(--paper), 0 4px 12px rgba(79,70,229,.3); }
.step h3 { margin: 18px 0 8px; }
.step p { color: var(--ink-2); font-size: .95rem; }

/* ---------- showcase ---------- */
.showcase { display: grid; grid-template-columns: 1.2fr .8fr; gap: 20px; margin-top: 40px; }
@media (max-width: 880px) { .showcase { grid-template-columns: 1fr; } }
.show-card { background: var(--card); border-radius: var(--radius); border: 1px solid var(--hairline); box-shadow: var(--shadow-1); padding: 24px; }
.show-label { font-size: .78rem; font-weight: 700; text-transform: uppercase; letter-spacing: .08em; color: var(--muted); margin-bottom: 16px; }
.show-row { display: grid; grid-template-columns: minmax(140px, 1fr) 2fr auto; gap: 12px; align-items: center; font-size: .88rem; color: var(--ink-2); padding: 8px 0; }
.show-bar { height: 8px; background: var(--accent-soft); border-radius: 999px; overflow: hidden; }
.show-bar span { display: block; height: 100%; background: var(--accent); border-radius: 999px; }
.show-foot { color: var(--muted); font-size: .82rem; border-top: 1px solid var(--hairline); margin-top: 12px; padding-top: 12px; }
.show-q { font-size: .95rem; }
.show-cite { color: var(--muted); font-size: .84rem; margin-top: 12px; border-top: 1px solid var(--hairline); padding-top: 12px; }

/* ---------- pricing ---------- */
.price-card { background: var(--card); border-radius: 40px; border: 1px solid var(--hairline); box-shadow: var(--shadow-2); max-width: 560px; margin: 40px auto 0; padding: 40px; text-align: center; position: relative; overflow: hidden; }
.price-card::before { content: ""; position: absolute; top: -60px; right: -60px; width: 220px; height: 220px; background: var(--accent-soft); border-radius: 50%; filter: blur(4px); opacity: .6; }
.price-main { display: flex; align-items: baseline; justify-content: center; gap: 10px; }
.price-big { font: 400 4rem/1 "Instrument Serif", Georgia, serif; }
.price-term { color: var(--muted); }
.check-list { list-style: none; margin: 26px 0; padding: 0; text-align: left; display: grid; gap: 12px; }
.check-list li { padding-left: 30px; position: relative; color: var(--ink-2); }
.check-list li::before { content: "✓"; position: absolute; left: 0; top: 0; width: 20px; height: 20px; border-radius: 50%; background: var(--accent-soft); color: var(--accent-dark); font-size: .8rem; font-weight: 800; display: flex; align-items: center; justify-content: center; }
.price-note { color: var(--muted); font-size: .9rem; margin-bottom: 24px; }

/* ---------- faq ---------- */
.faq { max-width: 720px; margin: 36px auto 0; display: grid; gap: 12px; }
.faq-item { background: var(--card); border: 1px solid var(--hairline); border-radius: 20px; box-shadow: var(--shadow-1); overflow: hidden; }
.faq-item h3 { margin: 0; }
.faq-q { width: 100%; background: none; border: 0; font: inherit; font-weight: 600; text-align: left; padding: 18px 52px 18px 22px; cursor: pointer; position: relative; color: var(--ink); }
.faq-q:hover { color: var(--accent-dark); }
.chev { position: absolute; right: 22px; top: 50%; width: 10px; height: 10px; border-right: 2px solid var(--muted); border-bottom: 2px solid var(--muted); transform: translateY(-70%) rotate(45deg); transition: transform .25s; }
.faq-q[aria-expanded="true"] .chev { transform: translateY(-30%) rotate(225deg); }
.faq-a { display: grid; grid-template-rows: 0fr; transition: grid-template-rows .3s ease; }
.faq-a.open { grid-template-rows: 1fr; }
.faq-a-in { overflow: hidden; }
.faq-a-in p { color: var(--ink-2); padding: 0 22px 20px; font-size: .95rem; }

/* ---------- final CTA ---------- */
.cta-dark { position: relative; overflow: hidden; background: #16182b; color: #fff; margin-top: 96px; padding: 88px 24px; }
.blob-c { width: 560px; right: -160px; top: -220px; opacity: .25; color: #8a85ff; }
.cta-dark-inner { max-width: 640px; margin: 0 auto; text-align: center; position: relative; }
.cta-dark .sub { color: #b9b7d8; margin-top: 14px; }
/* mobile (phones): nav + final CTA buttons stay compact and single-line (owner report: two-line Get started / Sign up) */
@media (max-width: 430px) {
  .nav-inner { padding: 12px 16px; gap: 14px; }          /* reclaim horizontal room in the sticky bar */
  .nav-cta { gap: 10px; margin-left: auto; }             /* keep the CTA group pinned to the right edge */
  .nav-cta .signin { font-size: .9rem; }
  .nav-cta .btn { padding: 9px 14px; font-size: .92rem; } /* compact pill; same visual language */
  .logo-lockup .logo-word { font-size: 1.1rem; }          /* slight wordmark trim, mark unchanged */
  .cta-row-center { flex-direction: column; gap: 14px; }  /* final CTA stacks instead of squeezing */
  .cta-row-center .btn { min-width: 15rem; justify-content: center; }
}

/* ---------- footer ---------- */
.foot { border-top: 1px solid var(--hairline); margin-top: 0; }
.foot-inner { max-width: 1120px; margin: 0 auto; padding: 48px 24px 28px; display: grid; grid-template-columns: 2fr 1fr 1fr 1.6fr; gap: 32px; }
@media (max-width: 880px) { .foot-inner { grid-template-columns: 1fr 1fr; } }
@media (max-width: 560px) { .foot-inner { grid-template-columns: 1fr; } }
.foot-tag { color: var(--muted); font-size: .92rem; margin-top: 8px; max-width: 22rem; }
.foot-col h3 { font-size: .82rem; text-transform: uppercase; letter-spacing: .08em; color: var(--muted); margin-bottom: 12px; }
.foot-col a { display: block; text-decoration: none; color: var(--ink-2); padding: 4px 0; font-size: .95rem; }
.foot-col a:hover { color: var(--accent-dark); }
.foot-col p { color: var(--muted); font-size: .85rem; }
.foot-legal { border-top: 1px solid var(--hairline); }
.foot-legal p { max-width: 1120px; margin: 0 auto; padding: 18px 24px; color: var(--muted); font-size: .85rem; }
.foot-legal a { color: var(--muted); text-decoration: none; }
.foot-legal a:hover { color: var(--accent-dark); text-decoration: underline; text-underline-offset: 3px; }

/* ---------- reveal-on-scroll ---------- */
.reveal { opacity: 0; transform: translateY(26px); transition: opacity .7s ease, transform .7s ease; }
.reveal.in { opacity: 1; transform: none; }