/* Blueberry prelaunch site */

:root {
  --indigo: #4845E8;
  --indigo-deep: #3734c4;
  --indigo-soft: #ECEBFC;
  --cream: #F7F6F2;
  --cream-deep: #EFEDE6;
  --ink: #171717;
  --gray: #5f5f66;
  --gray-light: #a9a9b0;
  --line: #e2e0d8;
  --white: #ffffff;
  --screen: #e8efe4;
  --screen-ink: #1c2a1c;
  --radius: 18px;
  --radius-sm: 10px;
  --wrap: 1120px;
  --font: "Nunito", ui-rounded, "SF Pro Rounded", system-ui, -apple-system, "Segoe UI", sans-serif;
}

*, *::before, *::after { box-sizing: border-box; }

html { scroll-behavior: smooth; -webkit-text-size-adjust: 100%; }

@media (prefers-reduced-motion: reduce) {
  html { scroll-behavior: auto; }
  *, *::before, *::after { animation: none !important; transition: none !important; }
}

body {
  margin: 0;
  font-family: var(--font);
  font-size: 17px;
  line-height: 1.55;
  color: var(--ink);
  background: var(--cream);
}

img { max-width: 100%; height: auto; display: block; }

h1, h2, h3 { line-height: 1.12; margin: 0 0 0.5em; font-weight: 800; letter-spacing: -0.01em; }
h1 { font-size: clamp(2.4rem, 6vw, 3.9rem); font-weight: 900; }
h2 { font-size: clamp(1.7rem, 3.6vw, 2.4rem); }
h3 { font-size: 1.2rem; }
p { margin: 0 0 1em; }
a { color: var(--indigo); }

.wrap { width: min(100% - 32px, var(--wrap)); margin: 0 auto; }
.narrow { max-width: 680px; }
.center { text-align: center; }

.skip-link {
  position: absolute; left: 8px; top: -60px; z-index: 100;
  background: var(--ink); color: #fff; padding: 10px 14px; border-radius: 8px; font-weight: 700;
}
.skip-link:focus { top: 8px; }

:focus-visible { outline: 3px solid var(--indigo); outline-offset: 3px; border-radius: 6px; }

/* Buttons */
.btn {
  display: inline-flex; align-items: center; justify-content: center;
  padding: 14px 24px; border-radius: 999px; font-weight: 800; font-size: 1rem;
  text-decoration: none; border: 2px solid transparent; cursor: pointer; font-family: inherit;
  transition: background-color .15s, color .15s, transform .1s;
}
.btn:active { transform: translateY(1px); }
.btn-primary { background: var(--indigo); color: #fff; }
.btn-primary:hover { background: var(--indigo-deep); }
.btn-primary:disabled { opacity: .6; cursor: default; }
.btn-secondary { background: transparent; color: var(--indigo); border-color: var(--indigo); }
.btn-secondary:hover { background: var(--indigo-soft); }
.btn-ghost { background: transparent; color: var(--gray); border-color: var(--line); }
.btn-ghost:hover { color: var(--ink); border-color: var(--gray-light); }
.btn-sm { padding: 9px 16px; font-size: .92rem; }

/* Header */
.site-header {
  position: sticky; top: 0; z-index: 50;
  background: rgba(247, 246, 242, .92);
  backdrop-filter: saturate(140%) blur(8px);
  border-bottom: 1px solid var(--line);
}
.header-inner { display: flex; align-items: center; justify-content: space-between; gap: 16px; min-height: 68px; }
.brand img { width: 156px; height: auto; }
.site-nav { display: flex; align-items: center; gap: 22px; }
.site-nav a:not(.btn) { color: var(--ink); text-decoration: none; font-weight: 700; }
.site-nav a:not(.btn):hover { color: var(--indigo); }
@media (max-width: 720px) {
  .site-nav a:not(.btn) { display: none; }
}

/* Hero */
.hero { padding: 56px 0 40px; }
.hero-grid { display: grid; grid-template-columns: 1.1fr .9fr; gap: 48px; align-items: center; }
@media (max-width: 860px) { .hero-grid { grid-template-columns: 1fr; gap: 32px; } .hero { padding-top: 32px; } }
.eyebrow {
  text-transform: uppercase; letter-spacing: .14em; font-size: .8rem; font-weight: 800; color: var(--indigo); margin-bottom: 10px;
}
.lede { font-size: 1.35rem; font-weight: 700; line-height: 1.3; }
.nots { font-weight: 800; }
.cta-row { display: flex; flex-wrap: wrap; gap: 12px; margin: 22px 0 14px; }
.fineprint { font-size: .86rem; color: var(--gray); }

/* Hero rendering */
.render-card { position: relative; width: min(100%, 520px); }
.render-card img { width: 100%; height: auto; display: block; filter: drop-shadow(0 22px 30px rgba(23, 23, 40, .28)); }
.concept-badge {
  position: absolute; top: 14px; left: 14px; background: rgba(247,246,242,.92); color: var(--ink);
  font-size: .72rem; font-weight: 800; letter-spacing: .1em; text-transform: uppercase;
  padding: 5px 10px; border-radius: 999px;
}

/* Device rendering (CSS concept) */
.device-figure { margin: 0; display: flex; flex-direction: column; align-items: center; gap: 12px; }
.device-figure figcaption { font-size: .82rem; color: var(--gray); text-align: center; }
.device {
  width: 260px; padding: 18px 18px 20px;
  background: linear-gradient(180deg, #2b2b30, #1b1b1f);
  border-radius: 34px;
  box-shadow: 0 24px 50px rgba(23, 23, 23, .22), inset 0 1px 0 rgba(255,255,255,.08);
  color: var(--screen-ink);
}
.device-top { display: flex; justify-content: center; margin-bottom: 12px; }
.device-mark {
  width: 22px; height: 22px; display: block; opacity: .55;
  background: url("/assets/mark-256.png") center / contain no-repeat;
  filter: grayscale(1) brightness(3);
}
.screen {
  background: var(--screen); border-radius: 12px; padding: 10px 12px 8px;
  font-family: "Nunito", monospace; font-weight: 700; font-size: .92rem;
  min-height: 150px; display: flex; flex-direction: column;
  box-shadow: inset 0 2px 8px rgba(0,0,0,.25);
}
.screen-bar { display: flex; justify-content: space-between; align-items: center; font-size: .78rem; opacity: .75; margin-bottom: 6px; }
.batt { width: 18px; height: 9px; border: 1.5px solid currentColor; border-radius: 2px; position: relative; display: inline-block; }
.batt::after { content: ""; position: absolute; left: 1.5px; top: 1.5px; bottom: 1.5px; width: 9px; background: currentColor; }
.screen-body { flex: 1; }
.screen-msg { margin: 0; line-height: 1.3; }
.screen-foot { display: flex; justify-content: space-between; font-size: .75rem; opacity: .7; margin-top: 8px; }
.keys { display: flex; justify-content: center; gap: 14px; margin-top: 16px; }
.key {
  width: 46px; height: 40px; border-radius: 12px; border: 0;
  background: linear-gradient(180deg, #3a3a40, #26262b); color: #d9d9de;
  display: inline-flex; align-items: center; justify-content: center; font-size: .95rem; font-family: inherit;
  box-shadow: 0 3px 0 #0e0e10;
}
.key-mid { width: 54px; }
button.key { cursor: pointer; }
button.key:active { transform: translateY(2px); box-shadow: 0 1px 0 #0e0e10; }
button.key:focus-visible { outline: 3px solid #9b99ff; outline-offset: 2px; }

/* Sections */
.section { padding: 64px 0; }
.section-tint { background: var(--cream-deep); }
.section-indigo { background: var(--indigo); color: #fff; }
.section-indigo .lede { color: #fff; }
.section-head { max-width: 680px; margin-bottom: 28px; }
.two-col { display: grid; grid-template-columns: 1fr 1fr; gap: 40px; align-items: center; }
.two-col-wide { align-items: start; }
@media (max-width: 760px) { .two-col { grid-template-columns: 1fr; gap: 24px; } }

.chips { list-style: none; padding: 0; margin: 0; display: grid; gap: 12px; }
.chips li {
  background: var(--white); border: 1px solid var(--line); border-radius: 999px;
  padding: 14px 22px; font-size: 1.25rem; font-weight: 800; width: fit-content;
}
.chips li:nth-child(even) { margin-left: 32px; background: var(--indigo); color: #fff; border-color: var(--indigo); }

/* Cards */
.cards { display: grid; grid-template-columns: repeat(4, 1fr); gap: 18px; }
@media (max-width: 960px) { .cards { grid-template-columns: repeat(2, 1fr); } }
@media (max-width: 520px) { .cards { grid-template-columns: 1fr; } }
.card { background: var(--white); border: 1px solid var(--line); border-radius: var(--radius); padding: 22px; }
.card h3 { margin-top: 14px; }
.card p { margin: 0; color: var(--gray); }
.card-icon { width: 48px; height: 48px; border-radius: 14px; background: var(--indigo-soft); color: var(--indigo); display: flex; align-items: center; justify-content: center; }

/* Limits */
.limits { background: var(--white); border: 1px solid var(--line); border-radius: var(--radius); padding: 24px 26px; }
.limits-title { font-size: 1rem; text-transform: uppercase; letter-spacing: .08em; color: var(--gray); margin-bottom: 14px; }
.limits-list { list-style: none; margin: 0; padding: 0; columns: 2; column-gap: 24px; }
.limits-list li { break-inside: avoid; padding: 7px 0 7px 26px; position: relative; font-weight: 700; }
.limits-list li::before {
  content: ""; position: absolute; left: 0; top: 13px; width: 16px; height: 16px; border-radius: 50%;
  background: var(--indigo-soft);
}
.limits-list li::after {
  content: ""; position: absolute; left: 4px; top: 20.5px; width: 8px; height: 2px; background: var(--indigo); border-radius: 2px;
}
@media (max-width: 420px) { .limits-list { columns: 1; } }

.sig { margin-top: 24px; font-weight: 800; }
.sig span { font-weight: 600; color: var(--gray); }

/* FAQ */
.faq details { border-bottom: 1px solid var(--line); padding: 6px 0; }
.faq summary { cursor: pointer; font-weight: 800; padding: 12px 0; list-style: none; position: relative; padding-right: 34px; }
.faq summary::-webkit-details-marker { display: none; }
.faq summary::after {
  content: "+"; position: absolute; right: 4px; top: 8px; font-size: 1.4rem; color: var(--indigo); font-weight: 800;
}
.faq details[open] summary::after { content: "–"; }
.faq details p { margin: 0 0 14px; color: var(--gray); }

/* Demo */
.demo-grid { display: grid; grid-template-columns: 320px 1fr; gap: 40px; align-items: start; }
@media (max-width: 760px) { .demo-grid { grid-template-columns: 1fr; gap: 28px; } }
.demo-device-col { display: flex; flex-direction: column; align-items: center; gap: 12px; }
.device-demo .screen { min-height: 190px; }
.screen-list { list-style: none; margin: 0; padding: 0; }
.screen-list li { margin: 0; }
.screen-list button {
  width: 100%; text-align: left; background: transparent; border: 0; font: inherit; color: inherit;
  padding: 3px 6px; border-radius: 5px; cursor: pointer; display: flex; justify-content: space-between; align-items: center;
}
.screen-list button[aria-current="true"] { background: var(--screen-ink); color: var(--screen); }
.screen-list button:focus-visible { outline: 2px solid var(--screen-ink); outline-offset: 0; }
.screen-list .arrow { opacity: .6; font-size: .8em; }
.screen-head { font-size: .78rem; opacity: .7; margin: 0 0 4px; text-transform: uppercase; letter-spacing: .06em; }
.screen-preview p { margin: 0 0 4px; }
.screen-preview .to { opacity: .7; font-size: .85em; }
.screen-status { font-size: .8rem; opacity: .75; margin-top: 6px; }
.demo-hint, .demo-note { font-size: .86rem; color: var(--gray); text-align: center; max-width: 320px; margin: 0; }
.demo-note { text-align: left; max-width: none; margin-top: 12px; }

.parent-app { background: var(--white); border: 1px solid var(--line); border-radius: var(--radius); overflow: hidden; max-width: 520px; }
.parent-head { display: flex; justify-content: space-between; align-items: center; padding: 14px 18px; border-bottom: 1px solid var(--line); }
.parent-title { font-weight: 800; }
.tag { font-size: .72rem; text-transform: uppercase; letter-spacing: .1em; font-weight: 800; color: var(--gray); background: var(--cream-deep); padding: 4px 9px; border-radius: 999px; }
.thread { list-style: none; margin: 0; padding: 18px; min-height: 220px; display: flex; flex-direction: column; gap: 10px; }
.thread-empty { color: var(--gray); font-size: .95rem; }
.bubble {
  max-width: 80%; padding: 10px 14px; border-radius: 16px; font-weight: 600; line-height: 1.35;
  animation: pop .18s ease-out;
}
@keyframes pop { from { opacity: 0; transform: translateY(4px); } to { opacity: 1; transform: none; } }
.bubble.from-child { align-self: flex-start; background: var(--cream-deep); border-bottom-left-radius: 4px; }
.bubble.from-parent { align-self: flex-end; background: var(--indigo); color: #fff; border-bottom-right-radius: 4px; }
.bubble .meta { display: block; font-size: .72rem; font-weight: 700; opacity: .7; margin-top: 4px; }
.bubble.typing { color: var(--gray); font-style: italic; }
.parent-foot { padding: 12px 18px; border-top: 1px solid var(--line); display: flex; justify-content: flex-end; }

/* Signup */
.signup { margin-top: 20px; background: var(--white); border: 1px solid var(--line); border-radius: var(--radius); padding: 26px; }
.field { margin-bottom: 18px; }
.field label { display: block; font-weight: 800; margin-bottom: 6px; }
.req { font-weight: 600; color: var(--gray); font-size: .9em; }
.opt { font-weight: 600; color: var(--gray); font-size: .9em; }
.field input[type="email"], .field select, .field textarea {
  width: 100%; font: inherit; padding: 12px 14px; border-radius: var(--radius-sm);
  border: 1.5px solid var(--line); background: var(--cream); color: var(--ink);
}
.field input:focus, .field select:focus, .field textarea:focus { border-color: var(--indigo); outline: 3px solid var(--indigo-soft); }
.field input[aria-invalid="true"] { border-color: #c0392b; }
.field textarea { resize: vertical; }
.field-check { display: flex; align-items: flex-start; gap: 10px; }
.field-check input { width: 20px; height: 20px; margin-top: 3px; accent-color: var(--indigo); flex: none; }
.field-check label { margin: 0; font-weight: 700; }
.field-help { font-size: .84rem; color: var(--gray); margin: 6px 0 0; }
.field-error { color: #b2301f; font-weight: 700; font-size: .9rem; margin: 6px 0 0; }
.hp { position: absolute; left: -9999px; width: 1px; height: 1px; overflow: hidden; }
.form-status { font-weight: 700; min-height: 1.4em; margin: 10px 0 14px; }
.form-status.ok { color: #1f6b3a; }
.form-status.err { color: #b2301f; }
.form-status.preview { color: var(--gray); }

/* Footer */
.site-footer { border-top: 1px solid var(--line); padding: 44px 0 28px; background: var(--cream-deep); }
.footer-grid { display: grid; grid-template-columns: 1fr 1.6fr; gap: 40px; }
@media (max-width: 760px) { .footer-grid { grid-template-columns: 1fr; gap: 24px; } }
.footer-mark { width: 40px; margin-bottom: 10px; }
.privacy-note h3 { font-size: 1rem; }
.privacy-note p { margin-bottom: .6em; }
.privacy-note p { font-size: .95rem; color: var(--gray); }
.copyright { margin-top: 24px; margin-bottom: 0; }