/* Fludd landing page — hand-written, no framework. Light theme, committed. */

:root {
  --ink: #0e1b2c;
  --ink-soft: #4a5b6d;
  --ink-faint: #5f6f81;
  --blue: #0b6bcb;
  --blue-dark: #085aa8;
  --blue-tint: #eaf3fc;
  --blue-tint-2: #f2f8fd;
  --aqua: #2ba9e0;
  --ground: #f6fbfe;
  --card: #ffffff;
  --line: #e0eaf1;
  --ok: #1c9c6b;
  --err: #c0392b;

  --shadow-sm: 0 1px 2px rgba(11, 60, 110, .06), 0 2px 10px rgba(11, 60, 110, .06);
  --shadow-md: 0 12px 34px rgba(11, 60, 110, .11);
  --shadow-lg: 0 26px 64px rgba(11, 60, 110, .18);

  --r-sm: 10px;
  --r: 16px;
  --r-lg: 24px;
  --pill: 999px;

  --container: 1120px;
  --pad: clamp(20px, 5vw, 40px);
  --font: "Plus Jakarta Sans", system-ui, -apple-system, "Segoe UI", Roboto, Helvetica, Arial, sans-serif;
}

* { box-sizing: border-box; }

html { scroll-behavior: smooth; }

body {
  margin: 0;
  font-family: var(--font);
  font-size: 17px;
  line-height: 1.65;
  color: var(--ink);
  background: var(--ground);
  -webkit-font-smoothing: antialiased;
  text-rendering: optimizeLegibility;
}

h1, h2, h3, h4 {
  margin: 0 0 .5em;
  line-height: 1.15;
  letter-spacing: -.02em;
  font-weight: 800;
}

h2 { font-size: clamp(1.7rem, 4vw, 2.5rem); }

p { margin: 0 0 1em; }

a { color: var(--blue-dark); }

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

ul, ol { margin: 0; padding: 0; }

:focus-visible {
  outline: 3px solid var(--aqua);
  outline-offset: 2px;
  border-radius: 4px;
}

.vh {
  position: absolute !important;
  width: 1px; height: 1px;
  padding: 0; margin: -1px;
  overflow: hidden;
  clip: rect(0 0 0 0);
  white-space: nowrap;
  border: 0;
}

.skip-link {
  position: absolute;
  left: 12px; top: -60px;
  z-index: 100;
  background: #fff;
  color: var(--blue-dark);
  padding: 10px 16px;
  border-radius: 8px;
  box-shadow: var(--shadow-md);
  text-decoration: none;
  font-weight: 700;
  transition: top .15s ease;
}
.skip-link:focus { top: 12px; }

/* ---- Layout ---------------------------------------------------------------- */

.container {
  width: 100%;
  max-width: var(--container);
  margin-inline: auto;
  padding-inline: var(--pad);
}

.section { padding-block: clamp(56px, 9vw, 104px); }

section[id] { scroll-margin-top: 84px; }

.eyebrow {
  margin: 0 0 14px;
  font-size: .8rem;
  font-weight: 700;
  letter-spacing: .12em;
  text-transform: uppercase;
  color: var(--blue);
}

.section-head { max-width: 640px; margin-bottom: clamp(32px, 5vw, 56px); }
.section-head.center { margin-inline: auto; text-align: center; }

.lead { font-size: 1.12rem; color: var(--ink-soft); }
.muted { color: var(--ink-soft); }

/* ---- Buttons ------------------------------------------------------------- */

.btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: .5em;
  font: inherit;
  font-weight: 700;
  padding: .8em 1.4em;
  border: 1px solid transparent;
  border-radius: var(--pill);
  background: var(--blue);
  color: #fff;
  text-decoration: none;
  cursor: pointer;
  box-shadow: var(--shadow-sm);
  transition: transform .12s ease, box-shadow .2s ease, background .2s ease;
}
.btn:hover { background: var(--blue-dark); transform: translateY(-1px); box-shadow: var(--shadow-md); }
.btn:active { transform: translateY(0); }
.btn[disabled] { opacity: .65; cursor: progress; transform: none; }

.btn-lg { padding: .95em 1.7em; font-size: 1.02rem; }

.btn-ghost {
  background: transparent;
  color: var(--blue-dark);
  border-color: var(--line);
  box-shadow: none;
}
.btn-ghost:hover { background: var(--blue-tint); border-color: transparent; color: var(--blue-dark); }

/* ---- Header ------------------------------------------------------------- */

.site-header {
  position: sticky;
  top: 0;
  z-index: 50;
  background: rgba(246, 251, 254, .85);
  backdrop-filter: saturate(180%) blur(10px);
  border-bottom: 1px solid var(--line);
}
.site-header .container {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 20px;
  min-height: 68px;
}

.brand {
  display: inline-flex;
  align-items: center;
  gap: 10px;
  font-weight: 800;
  font-size: 1.2rem;
  letter-spacing: -.02em;
  color: var(--ink);
  text-decoration: none;
}
.brand img { width: 30px; height: 30px; display: block; border-radius: 8px; }

.header-cta { display: inline-flex; align-items: center; gap: 10px; }

/* Below 780px the header only has room for the brand and one action, so the
   demo link is hidden there and the hero carries it instead. */
.header-demo { display: none; }

.nav-links { display: none; gap: 28px; }
.nav-links a {
  color: var(--ink-soft);
  text-decoration: none;
  font-weight: 600;
  font-size: .97rem;
}
.nav-links a:hover { color: var(--ink); }

@media (min-width: 780px) {
  .nav-links { display: inline-flex; }
  .header-demo { display: inline-flex; }
}

/* ---- Hero ------------------------------------------------------------- */

.hero {
  position: relative;
  overflow: hidden;
  background: var(--ground) url("refraction.jpg") center / cover no-repeat;
}
.hero::before {
  content: "";
  position: absolute;
  inset: 0;
  z-index: 0;
  background: linear-gradient(180deg, rgba(246, 251, 254, .88), rgba(246, 251, 254, .7));
}
.hero .container {
  position: relative;
  z-index: 1;
  padding-block: clamp(48px, 8vw, 88px);
  max-width: none;
  padding-inline: clamp(20px, 11.5vw, 230px);
}
.hero-copy { max-width: 700px; }
.hero h1 { font-size: clamp(2.05rem, 5.4vw, 3.35rem); }
.hero .lead { font-size: clamp(1.03rem, 2.2vw, 1.22rem); margin-bottom: 1.6em; }
.hero-actions { display: flex; flex-wrap: wrap; gap: 14px; align-items: center; }
.hero-fine { margin-top: 18px; font-size: .9rem; color: var(--ink-faint); }

.mock text { font-family: var(--font); }

@media (min-width: 940px) {
  .hero::before {
    background: linear-gradient(90deg,
      rgba(246, 251, 254, .94) 0%,
      rgba(246, 251, 254, .84) 30%,
      rgba(246, 251, 254, .3) 55%,
      rgba(246, 251, 254, .04) 75%,
      rgba(246, 251, 254, 0) 100%);
  }
  .hero .container {
    min-height: 480px;
    display: grid;
    align-content: center;
  }
}

/* ---- Band (why now / how it works background) --------------------------- */

.band {
  background: linear-gradient(180deg, var(--blue-tint-2), #fff);
  border-block: 1px solid var(--line);
}

.band .big {
  max-width: 860px;
  margin: 0 auto;
  text-align: center;
  font-size: clamp(1.22rem, 3vw, 1.6rem);
  font-weight: 600;
  line-height: 1.45;
  color: var(--ink);
}
.band .eyebrow { text-align: center; }

/* ---- Ticks (check-marked lists) --------------------------------------- */

.ticks { list-style: none; display: grid; gap: 12px; }
.ticks li {
  position: relative;
  padding-left: 32px;
  color: var(--ink-soft);
}
.ticks li::before {
  content: "";
  position: absolute;
  left: 0;
  top: 3px;
  width: 20px;
  height: 20px;
  border-radius: 50%;
  background: var(--blue-tint) url("data:image/svg+xml,%3Csvg xmlns='http://www.w3.org/2000/svg' viewBox='0 0 24 24' fill='none' stroke='%230b6bcb' stroke-width='3.2' stroke-linecap='round' stroke-linejoin='round'%3E%3Cpath d='M20 6 9 17l-5-5'/%3E%3C/svg%3E") center / 12px no-repeat;
}

/* ---- Product showcase ------------------------------------------------- */

.feature {
  display: grid;
  gap: clamp(28px, 5vw, 56px);
  align-items: center;
}
@media (min-width: 900px) {
  .feature { grid-template-columns: 1fr 1fr; }
  .feature.flip .feature-phone { order: -1; }
}
.feature .lead { margin-bottom: 1.2em; }

.feature-phone {
  width: min(300px, 72vw);
  margin-inline: auto;
}
.feature-phone svg {
  display: block;
  width: 100%;
  height: auto;
  filter: drop-shadow(var(--shadow-md));
}

.shot-desktop {
  max-width: 1000px;
  margin-inline: auto;
}
.shot-desktop svg {
  display: block;
  width: 100%;
  height: auto;
  filter: drop-shadow(var(--shadow-md));
}

.ticks-row {
  max-width: 1000px;
  margin: clamp(28px, 4vw, 44px) auto 0;
}
@media (min-width: 820px) {
  .ticks-row { grid-template-columns: repeat(3, 1fr); gap: 20px; }
}

.note {
  margin-top: 16px;
  font-size: .95rem;
  font-style: italic;
  color: var(--ink-faint);
}

/* ---- Pricing ----------------------------------------------------- */

.price-card {
  max-width: 620px;
  margin-inline: auto;
  text-align: center;
  background: var(--card);
  border: 1px solid var(--line);
  border-radius: var(--r-lg);
  padding: clamp(32px, 5vw, 48px);
  box-shadow: var(--shadow-md);
}
.price-card .big-line {
  font-size: clamp(1.4rem, 3.6vw, 1.9rem);
  font-weight: 800;
  letter-spacing: -.02em;
  margin-bottom: .4em;
}
.price-card .sub { color: var(--ink-soft); margin-bottom: 0; }
.price-list {
  list-style: none;
  display: grid;
  gap: 10px;
  margin: 26px 0 30px;
  text-align: left;
}
.price-list li {
  position: relative;
  padding-left: 32px;
  color: var(--ink-soft);
}
.price-list li::before {
  content: "";
  position: absolute;
  left: 0;
  top: 3px;
  width: 20px;
  height: 20px;
  border-radius: 50%;
  background: var(--blue-tint) url("data:image/svg+xml,%3Csvg xmlns='http://www.w3.org/2000/svg' viewBox='0 0 24 24' fill='none' stroke='%230b6bcb' stroke-width='3.2' stroke-linecap='round' stroke-linejoin='round'%3E%3Cpath d='M20 6 9 17l-5-5'/%3E%3C/svg%3E") center / 12px no-repeat;
}
.price-foot { margin: 16px 0 0; font-size: .9rem; color: var(--ink-faint); }

/* ---- Early-access / signup ------------------------------------- */

.signup {
  background: linear-gradient(180deg, #0b6bcb, #0a4f9c);
  color: #fff;
}
.signup .eyebrow { color: #9fd0f5; }
.signup h2 { color: #fff; }
.signup .lead { color: #d7e8fa; }

.signup-wrap { display: grid; gap: clamp(28px, 5vw, 48px); }
@media (min-width: 900px) {
  .signup-wrap { grid-template-columns: .9fr 1.1fr; align-items: start; }
}

.signup-points { list-style: none; display: grid; gap: 16px; margin-top: 8px; }
.signup-points li {
  position: relative;
  padding-left: 34px;
  color: #dcecfb;
}
.signup-points li::before {
  content: "";
  position: absolute;
  left: 0;
  top: 2px;
  width: 22px;
  height: 22px;
  border-radius: 50%;
  background: rgba(255, 255, 255, .16) url("data:image/svg+xml,%3Csvg xmlns='http://www.w3.org/2000/svg' viewBox='0 0 24 24' fill='none' stroke='%23ffffff' stroke-width='3.2' stroke-linecap='round' stroke-linejoin='round'%3E%3Cpath d='M20 6 9 17l-5-5'/%3E%3C/svg%3E") center / 13px no-repeat;
}
.signup-points strong { display: block; color: #fff; }

.form-card {
  background: #fff;
  color: var(--ink);
  border-radius: var(--r-lg);
  padding: clamp(24px, 4vw, 36px);
  box-shadow: var(--shadow-lg);
}

.field { display: grid; gap: 6px; margin-bottom: 16px; }
.field label { font-weight: 700; font-size: .92rem; }
.field .opt { color: var(--ink-faint); font-weight: 500; }
.field input,
.field select,
.field textarea {
  width: 100%;
  font: inherit;
  color: var(--ink);
  padding: .7em .85em;
  border: 1px solid var(--line);
  border-radius: var(--r-sm);
  background: var(--ground);
  resize: vertical;
}
.field input:focus,
.field select:focus,
.field textarea:focus {
  border-color: var(--blue);
  background: #fff;
  outline: none;
  box-shadow: 0 0 0 3px rgba(11, 107, 203, .16);
}

.hp {
  position: absolute;
  left: -9999px;
  width: 1px;
  height: 1px;
  overflow: hidden;
}

.form-actions { margin-top: 20px; }
.form-actions .btn { width: 100%; }

.form-note {
  min-height: 1.2em;
  margin: 12px 0 0;
  font-size: .92rem;
  color: var(--ink-soft);
}
.form-note.is-error { color: var(--err); font-weight: 600; }

.form-fine { margin: 10px 0 0; font-size: .85rem; color: var(--ink-faint); }
.form-fine a { color: inherit; }

.form-success { text-align: center; padding: 24px 8px; }
.form-success h3 { color: var(--ok); font-size: 1.35rem; }
.form-success p { margin: 0; color: var(--ink-soft); }

/* ---- FAQ --------------------------------------------------------- */

.faq-list {
  max-width: 780px;
  margin-inline: auto;
  display: grid;
  gap: 12px;
}
.faq-item {
  background: var(--card);
  border: 1px solid var(--line);
  border-radius: var(--r-sm);
  padding: 2px 20px;
}
.faq-item summary {
  display: flex;
  justify-content: space-between;
  align-items: center;
  gap: 16px;
  padding: 16px 0;
  cursor: pointer;
  font-weight: 700;
  list-style: none;
}
.faq-item summary::-webkit-details-marker { display: none; }
.faq-item summary::after {
  content: "+";
  font-size: 1.5rem;
  font-weight: 400;
  line-height: 1;
  color: var(--blue);
}
.faq-item[open] summary::after { content: "\2013"; }
.faq-item p { margin: 0 0 16px; color: var(--ink-soft); }

/* ---- Footer ---------------------------------------------------- */

.site-footer {
  background: #0b1a2b;
  color: #9fb2c4;
  padding-block: 48px;
}
.site-footer .container { display: grid; gap: 22px; }
.site-footer .brand { color: #fff; }
.site-footer .brand img { width: 28px; height: 28px; }

.footer-row {
  display: flex;
  flex-wrap: wrap;
  justify-content: space-between;
  align-items: center;
  gap: 20px;
}
.footer-nav { display: flex; flex-wrap: wrap; gap: 20px; }
.site-footer a { color: #9fb2c4; text-decoration: none; }
.site-footer a:hover { color: #fff; }
.footer-legal { margin: 0; font-size: .85rem; color: #93a7b8; }

/* ---- Motion ------------------------------------------------- */

@media (prefers-reduced-motion: reduce) {
  html { scroll-behavior: auto; }
  .btn, .btn:hover { transition: none; transform: none; }
}