/* PowerBoard landing page */
:root {
  --page: #0b0b0c;
  --surface: #151516;
  --surface-2: #1d1d1f;
  --surface-3: #26262a;
  --border: rgba(255, 255, 255, 0.09);
  --border-strong: rgba(255, 255, 255, 0.16);
  --ink: #ffffff;
  --ink-2: #c9c8bf;
  --ink-3: #8c8a84;
  --accent: #3987e5;
  --accent-2: #199e70;
  --accent-dim: rgba(57, 135, 229, 0.16);
  --good: #2fbf71;
  --bad: #e0564f;
  --warn: #fab219;
  --grad: linear-gradient(120deg, #3987e5 0%, #199e70 100%);
  --font: "Inter", system-ui, -apple-system, "Segoe UI", Roboto, sans-serif;
  --display: "Space Grotesk", "Inter", system-ui, sans-serif;
  --mono: ui-monospace, "Cascadia Code", Consolas, "SF Mono", monospace;
  --radius: 14px;
  --wrap: 1180px;
  --shadow: 0 30px 80px rgba(0, 0, 0, 0.55), 0 0 0 1px var(--border);
}

* { box-sizing: border-box; }
html { scroll-behavior: smooth; -webkit-text-size-adjust: 100%; }
@media (prefers-reduced-motion: reduce) {
  html { scroll-behavior: auto; }
  .reveal { transition: none !important; opacity: 1 !important; transform: none !important; }
}

body {
  margin: 0;
  background: var(--page);
  color: var(--ink-2);
  font-family: var(--font);
  font-size: 16px;
  line-height: 1.6;
  -webkit-font-smoothing: antialiased;
  overflow-x: hidden;
}
img { max-width: 100%; height: auto; display: block; }
a { color: var(--accent); text-decoration: none; }
a:hover { text-decoration: underline; }
h1, h2, h3, h4 { color: var(--ink); font-family: var(--display); letter-spacing: -0.02em; line-height: 1.12; margin: 0 0 0.5em; }
h1 { font-size: clamp(2.4rem, 5.6vw, 4.4rem); font-weight: 700; }
h2 { font-size: clamp(1.8rem, 3.4vw, 2.6rem); font-weight: 700; }
h3 { font-size: 1.2rem; font-weight: 600; letter-spacing: -0.01em; }
p { margin: 0 0 1em; }
.wrap { width: min(var(--wrap), calc(100% - 40px)); margin: 0 auto; }
.center { text-align: center; }
.eyebrow { font-family: var(--mono); font-size: 0.78rem; letter-spacing: 0.14em; text-transform: uppercase; color: var(--accent); margin-bottom: 14px; display: inline-flex; align-items: center; gap: 10px; }
.eyebrow::before { content: ""; width: 22px; height: 2px; background: var(--grad); border-radius: 2px; }
.lede { font-size: clamp(1.05rem, 1.6vw, 1.25rem); color: var(--ink-2); max-width: 62ch; }
.dim { color: var(--ink-3); }
.grad-text { background: var(--grad); -webkit-background-clip: text; background-clip: text; color: transparent; }
kbd, code { font-family: var(--mono); font-size: 0.86em; background: var(--surface-3); border: 1px solid var(--border); border-radius: 5px; padding: 0.1em 0.4em; color: var(--ink); }
.sr-only { position: absolute; width: 1px; height: 1px; overflow: hidden; clip: rect(0 0 0 0); white-space: nowrap; }

/* ---------- buttons ---------- */
.btn {
  display: inline-flex; align-items: center; justify-content: center; gap: 8px;
  padding: 12px 20px; border-radius: 10px; font-weight: 600; font-size: 0.98rem;
  border: 1px solid var(--border-strong); background: var(--surface-2); color: var(--ink);
  cursor: pointer; font-family: inherit; line-height: 1.2;
  transition: transform 0.15s, background 0.15s, border-color 0.15s, box-shadow 0.15s;
  white-space: nowrap;
}
.btn:hover { text-decoration: none; background: var(--surface-3); transform: translateY(-1px); }
.btn:disabled { opacity: 0.6; cursor: wait; transform: none; }
.btn.primary { background: var(--accent); border-color: transparent; color: #fff; box-shadow: 0 8px 24px rgba(57, 135, 229, 0.35); }
.btn.primary:hover { background: #4a93ea; box-shadow: 0 10px 28px rgba(57, 135, 229, 0.45); }
.btn.ghost { background: transparent; }
.btn.lg { padding: 15px 26px; font-size: 1.05rem; border-radius: 12px; }

/* ---------- nav ---------- */
.nav {
  position: sticky; top: 0; z-index: 50;
  backdrop-filter: blur(14px); -webkit-backdrop-filter: blur(14px);
  background: rgba(11, 11, 12, 0.7); border-bottom: 1px solid transparent;
  transition: border-color 0.2s, background 0.2s;
}
.nav.scrolled { border-color: var(--border); background: rgba(11, 11, 12, 0.86); }
.nav .wrap { display: flex; align-items: center; gap: 28px; height: 66px; position: relative; }
.brand { display: flex; align-items: center; gap: 10px; color: var(--ink); font-family: var(--display); font-weight: 700; font-size: 1.2rem; letter-spacing: -0.02em; }
.brand:hover { text-decoration: none; }
.brand svg { width: 30px; height: 30px; }
.nav-links { display: flex; gap: 26px; margin: 0 0 0 auto; list-style: none; padding: 0; }
.nav-links a { color: var(--ink-2); font-weight: 500; font-size: 0.95rem; }
.nav-links a:hover { color: var(--ink); text-decoration: none; }
.nav-cta { margin-left: 6px; }
.nav-toggle { display: none; margin-left: auto; background: none; border: 1px solid var(--border-strong); color: var(--ink); border-radius: 8px; width: 40px; height: 40px; cursor: pointer; font-size: 1.2rem; }

/* ---------- hero ---------- */
.hero { position: relative; padding: 80px 0 40px; overflow: hidden; }
.hero::before {
  content: ""; position: absolute; inset: -30% -10% auto; height: 80%; pointer-events: none; z-index: -1;
  background:
    radial-gradient(600px 360px at 20% 20%, rgba(57, 135, 229, 0.22), transparent 60%),
    radial-gradient(520px 340px at 80% 10%, rgba(25, 158, 112, 0.18), transparent 60%);
}
.hero-grid { display: grid; grid-template-columns: 1.05fr 1fr; gap: 48px; align-items: center; }
.hero h1 { margin-bottom: 18px; }
.hero .lede { margin-bottom: 26px; }
.hero-points { list-style: none; padding: 0; margin: 22px 0 0; display: flex; flex-wrap: wrap; gap: 10px 18px; color: var(--ink-3); font-size: 0.92rem; }
.hero-points li { display: inline-flex; align-items: center; gap: 7px; }
.hero-points li::before { content: "\2713"; color: var(--good); font-weight: 700; }
.hero-shot { position: relative; }
.hero-shot .frame { transform: perspective(1400px) rotateY(-6deg) rotateX(2deg); transform-origin: left center; }

/* browser frame */
.frame { background: var(--surface); border-radius: 14px; box-shadow: var(--shadow); overflow: hidden; }
.frame-bar { height: 34px; display: flex; align-items: center; gap: 6px; padding: 0 12px; border-bottom: 1px solid var(--border); background: #111112; }
.frame-bar i { width: 10px; height: 10px; border-radius: 50%; background: #2f2f33; display: block; }
.frame-bar i:nth-child(1) { background: #e25d55; }
.frame-bar i:nth-child(2) { background: #e8b93a; }
.frame-bar i:nth-child(3) { background: #47c06b; }
.frame-bar span { margin-left: 10px; font-family: var(--mono); font-size: 0.7rem; color: var(--ink-3); background: var(--surface-2); border-radius: 6px; padding: 3px 10px; }
.frame img { width: 100%; }
.frame.zoom { cursor: zoom-in; }

/* ---------- sign-up form ---------- */
.signup { display: flex; gap: 10px; max-width: 520px; }
.signup .field { flex: 1; position: relative; }
.signup input[type="email"] {
  width: 100%; height: 52px; padding: 0 16px; font: inherit; font-size: 1rem; color: var(--ink);
  background: var(--surface-2); border: 1px solid var(--border-strong); border-radius: 12px; outline: none;
  transition: border-color 0.15s, box-shadow 0.15s;
}
.signup input[type="email"]::placeholder { color: var(--ink-3); }
.signup input[type="email"]:focus { border-color: var(--accent); box-shadow: 0 0 0 4px var(--accent-dim); }
.signup[data-state="error"] input[type="email"] { border-color: var(--bad); box-shadow: 0 0 0 4px rgba(224, 86, 79, 0.18); }
.signup .btn { height: 52px; }
.signup .hp { position: absolute; left: -9999px; top: auto; width: 1px; height: 1px; overflow: hidden; }
.form-msg { min-height: 1.4em; margin: 10px 0 0; font-size: 0.92rem; color: var(--ink-3); }
.form-msg.is-error { color: #ff8a84; }
.form-msg.is-ok { color: var(--good); font-weight: 500; }
.signup.is-done .field, .signup.is-done .btn { display: none; }
.signup.is-done + .form-msg { font-size: 1.05rem; }
.signup.is-done + .form-msg::before { content: "\2713  "; }
.fineprint { font-size: 0.82rem; color: var(--ink-3); margin-top: 8px; }

/* ---------- stats strip ---------- */
.stats { margin: 56px auto 0; display: grid; grid-template-columns: repeat(4, 1fr); border: 1px solid var(--border); border-radius: var(--radius); background: var(--surface); overflow: hidden; }
.stat { padding: 22px 24px; border-right: 1px solid var(--border); }
.stat:last-child { border-right: 0; }
.stat b { display: block; font-family: var(--display); font-size: 1.9rem; color: var(--ink); letter-spacing: -0.02em; line-height: 1.1; }
.stat span { font-size: 0.88rem; color: var(--ink-3); }

/* ---------- sections ---------- */
section { padding: 96px 0; }
.section-head { max-width: 720px; margin-bottom: 48px; }
.section-head.center { margin-left: auto; margin-right: auto; }
.section-head.center .eyebrow { justify-content: center; }

/* how it works */
.steps { display: grid; grid-template-columns: repeat(4, 1fr); gap: 18px; counter-reset: step; }
.step { background: var(--surface); border: 1px solid var(--border); border-radius: var(--radius); padding: 24px; position: relative; }
.step::before { counter-increment: step; content: counter(step, decimal-leading-zero); font-family: var(--mono); color: var(--accent); font-size: 0.8rem; letter-spacing: 0.1em; }
.step h3 { margin: 10px 0 8px; }
.step p { color: var(--ink-3); font-size: 0.95rem; margin: 0; }
.chips { display: flex; flex-wrap: wrap; gap: 6px; margin-top: 14px; }
.chip { font-size: 0.76rem; font-family: var(--mono); border: 1px solid var(--border-strong); border-radius: 999px; padding: 3px 10px; color: var(--ink-2); background: var(--surface-2); }
.chip.ok::before { content: "\2713\00a0"; color: var(--good); }

/* feature rows */
.feature { display: grid; grid-template-columns: 1fr 1.25fr; gap: 56px; align-items: center; padding: 56px 0; border-top: 1px solid var(--border); }
.feature:first-of-type { border-top: 0; padding-top: 0; }
.feature.flip .feature-copy { order: 2; }
.feature-copy h3 { font-size: clamp(1.4rem, 2.4vw, 1.9rem); margin-bottom: 12px; }
.feature-copy p { color: var(--ink-2); }
.feature-copy ul { padding-left: 0; list-style: none; margin: 16px 0 0; display: grid; gap: 8px; color: var(--ink-2); font-size: 0.96rem; }
.feature-copy li { padding-left: 24px; position: relative; }
.feature-copy li::before { content: ""; position: absolute; left: 0; top: 0.55em; width: 12px; height: 12px; border-radius: 3px; background: var(--grad); opacity: 0.9; }

/* panel demo */
.demo-tabs { display: flex; gap: 6px; margin-bottom: 12px; flex-wrap: wrap; }
.demo-tabs button { font: inherit; font-size: 0.88rem; font-weight: 500; padding: 8px 14px; border-radius: 8px; border: 1px solid var(--border-strong); background: var(--surface-2); color: var(--ink-2); cursor: pointer; }
.demo-tabs button.active { background: var(--accent); border-color: transparent; color: #fff; }
.demo-caption { font-size: 0.88rem; color: var(--ink-3); margin-top: 10px; }

/* benefits */
.benefits { display: grid; grid-template-columns: repeat(3, 1fr); gap: 18px; }
.benefit { background: var(--surface); border: 1px solid var(--border); border-radius: var(--radius); padding: 26px; transition: border-color 0.2s, transform 0.2s; }
.benefit:hover { border-color: var(--border-strong); transform: translateY(-2px); }
.benefit .icon { width: 42px; height: 42px; border-radius: 11px; display: grid; place-items: center; background: var(--accent-dim); color: var(--accent); margin-bottom: 16px; }
.benefit .icon svg { width: 22px; height: 22px; }
.benefit h3 { margin-bottom: 6px; }
.benefit p { color: var(--ink-3); font-size: 0.95rem; margin: 0; }

/* gallery */
.gallery { display: grid; grid-template-columns: repeat(3, 1fr); gap: 18px; }
.gallery figure { margin: 0; background: var(--surface); border: 1px solid var(--border); border-radius: var(--radius); overflow: hidden; cursor: zoom-in; transition: border-color 0.2s, transform 0.2s; }
.gallery figure:hover { border-color: var(--border-strong); transform: translateY(-2px); }
.gallery .tall { height: 300px; overflow: hidden; position: relative; }
.gallery .tall img { width: 100%; height: auto; }
.gallery .tall::after { content: ""; position: absolute; inset: auto 0 0; height: 70px; background: linear-gradient(transparent, var(--surface)); }
.gallery figcaption { padding: 14px 16px; font-size: 0.92rem; color: var(--ink-2); border-top: 1px solid var(--border); }
.gallery figcaption small { display: block; color: var(--ink-3); margin-top: 2px; }
.gallery.wide { grid-template-columns: repeat(2, 1fr); }
.gallery.wide .tall { height: 260px; }

/* trust block */
.trust { display: grid; grid-template-columns: 1fr 1fr; gap: 40px; align-items: center; background: var(--surface); border: 1px solid var(--border); border-radius: 20px; padding: 40px; }
.trust blockquote { margin: 0; font-family: var(--display); font-size: 1.25rem; color: var(--ink); line-height: 1.4; }
.trust blockquote footer { margin-top: 14px; font-family: var(--font); font-size: 0.88rem; color: var(--ink-3); border: 0; padding: 0; }

/* faq */
.faq { max-width: 820px; margin: 0 auto; }
.faq details { border-top: 1px solid var(--border); padding: 18px 0; }
.faq details:last-child { border-bottom: 1px solid var(--border); }
.faq summary { cursor: pointer; color: var(--ink); font-weight: 600; font-size: 1.05rem; list-style: none; display: flex; justify-content: space-between; align-items: center; gap: 16px; }
.faq summary::-webkit-details-marker { display: none; }
.faq summary::after { content: "+"; color: var(--accent); font-size: 1.4rem; line-height: 1; transition: transform 0.2s; }
.faq details[open] summary::after { transform: rotate(45deg); }
.faq details p { margin: 12px 0 0; color: var(--ink-2); }

/* final cta */
.cta { position: relative; overflow: hidden; }
.cta .panel { background: linear-gradient(160deg, rgba(57, 135, 229, 0.18), rgba(25, 158, 112, 0.12)), var(--surface); border: 1px solid var(--border-strong); border-radius: 24px; padding: 64px 40px; text-align: center; }
.cta .signup { margin: 28px auto 0; }
.cta .form-msg { text-align: center; }

/* footer */
footer.site { border-top: 1px solid var(--border); padding: 36px 0; font-size: 0.88rem; color: var(--ink-3); }
footer.site .wrap { display: flex; justify-content: space-between; gap: 20px; flex-wrap: wrap; align-items: center; }
footer.site a { color: var(--ink-2); }

/* lightbox */
.lightbox { position: fixed; inset: 0; z-index: 100; background: rgba(5, 5, 6, 0.92); display: grid; place-items: center; padding: 24px; overflow: auto; }
.lightbox[hidden] { display: none; }
.lightbox figure { margin: 0; max-width: min(1400px, 100%); }
.lightbox img { max-height: calc(100vh - 110px); width: auto; max-width: 100%; margin: 0 auto; border-radius: 10px; box-shadow: var(--shadow); }
.lightbox figcaption { text-align: center; margin-top: 12px; color: var(--ink-2); font-size: 0.95rem; }
.lightbox button { position: fixed; top: 18px; right: 18px; width: 44px; height: 44px; border-radius: 50%; border: 1px solid var(--border-strong); background: var(--surface-2); color: var(--ink); font-size: 1.3rem; cursor: pointer; }

/* reveal */
.reveal { opacity: 0; transform: translateY(18px); transition: opacity 0.6s ease, transform 0.6s ease; }
.reveal.in { opacity: 1; transform: none; }

/* 404 */
.page-404 main { min-height: 70vh; display: grid; place-content: center; }

/* ---------- responsive ---------- */
@media (max-width: 980px) {
  .hero-grid { grid-template-columns: 1fr; gap: 36px; }
  .hero-shot .frame { transform: none; }
  .stats { grid-template-columns: repeat(2, 1fr); }
  .stat:nth-child(2) { border-right: 0; }
  .stat:nth-child(-n+2) { border-bottom: 1px solid var(--border); }
  .steps { grid-template-columns: repeat(2, 1fr); }
  .feature { grid-template-columns: 1fr; gap: 28px; }
  .feature.flip .feature-copy { order: 0; }
  .benefits { grid-template-columns: repeat(2, 1fr); }
  .gallery, .gallery.wide { grid-template-columns: repeat(2, 1fr); }
  .trust { grid-template-columns: 1fr; }
}
@media (max-width: 640px) {
  section { padding: 64px 0; }
  .hero { padding-top: 48px; }
  .nav-links { display: none; position: absolute; top: 66px; left: 0; right: 0; flex-direction: column; gap: 0; background: var(--page); border-bottom: 1px solid var(--border); padding: 10px 20px 16px; }
  .nav-links li { padding: 10px 0; }
  .nav.open .nav-links { display: flex; }
  .nav-toggle { display: inline-grid; place-items: center; }
  .nav-cta { display: none; }
  .signup { flex-direction: column; }
  .steps, .benefits, .gallery, .gallery.wide { grid-template-columns: 1fr; }
  .stats { grid-template-columns: 1fr; }
  .stat { border-right: 0; border-bottom: 1px solid var(--border); }
  .stat:last-child { border-bottom: 0; }
  .trust { padding: 26px; }
  .cta .panel { padding: 44px 22px; }
}