/* FFLOW Communication Assistant - beta landing
   Theme: light, locked (matches the product UI in the screenshots).
   Radius system: containers 16px, interactive 12px, tags pill. */

:root {
  --ink: #121216;
  --ink-soft: #54545e;
  --paper: #ffffff;
  --paper-tint: #f7f7f9;
  --line: #e7e7ec;
  --accent: #f8175c;
  --accent-wash: #fff0f4;
  --radius-box: 16px;
  --radius-ui: 12px;
  --shadow-shot: 0 24px 60px rgba(24, 18, 28, 0.14), 0 4px 14px rgba(24, 18, 28, 0.06);
  --ease-out: cubic-bezier(0.16, 1, 0.3, 1);
}

* { box-sizing: border-box; }

html { scroll-behavior: smooth; }

body {
  margin: 0;
  font-family: "Geist", system-ui, -apple-system, "Segoe UI", sans-serif;
  font-size: 1rem;
  line-height: 1.6;
  color: var(--ink);
  background: var(--paper);
  -webkit-font-smoothing: antialiased;
}

::selection { background: var(--accent); color: #fff; }

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

h1, h2, h3 { margin: 0; line-height: 1.12; letter-spacing: -0.025em; text-wrap: balance; }
p { margin: 0; }

.container {
  max-width: 1180px;
  margin-inline: auto;
  padding-inline: 24px;
}

/* ---------- Wordmark ---------- */

.wordmark {
  font-style: italic;
  font-weight: 800;
  font-size: 1.5rem;
  letter-spacing: -0.04em;
  color: var(--accent);
  text-decoration: none;
}

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

.btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  padding: 0.8rem 1.5rem;
  border-radius: var(--radius-ui);
  font-weight: 600;
  font-size: 0.95rem;
  white-space: nowrap;
  text-decoration: none;
  transition: transform 0.2s var(--ease-out), background-color 0.2s var(--ease-out), border-color 0.2s var(--ease-out);
}
.btn:hover { transform: translateY(-1px); }
.btn:active { transform: scale(0.98); }

.btn-primary { background: var(--ink); color: #fff; }
.btn-primary:hover { background: #26262c; }

.btn-ghost { border: 1px solid var(--line); color: var(--ink); background: transparent; }
.btn-ghost:hover { border-color: var(--ink); }

.btn-light { background: #fff; color: var(--ink); }

.btn-outline { border: 1px solid rgba(255, 255, 255, 0.35); color: #fff; }
.btn-outline:hover { border-color: #fff; }

.btn-sm { padding: 0.55rem 1.1rem; font-size: 0.9rem; }

/* ---------- Nav ---------- */

.nav {
  position: sticky;
  top: 0;
  z-index: 20;
  background: rgba(255, 255, 255, 0.85);
  backdrop-filter: blur(12px);
  border-bottom: 1px solid var(--line);
}
.nav-inner {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 1.5rem;
  height: 68px;
}
.nav-links { display: flex; gap: 1.75rem; }
.nav-links a {
  color: var(--ink-soft);
  text-decoration: none;
  font-size: 0.95rem;
  font-weight: 500;
  transition: color 0.2s var(--ease-out);
}
.nav-links a:hover { color: var(--ink); }

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

.hero { overflow: hidden; padding-block: 5.5rem 6.5rem; }

.hero-grid {
  display: grid;
  grid-template-columns: minmax(0, 7fr) minmax(0, 6fr);
  align-items: center;
  gap: 3.5rem;
}

.hero-pill {
  display: inline-block;
  background: var(--accent-wash);
  color: #c0103f;
  font-size: 0.85rem;
  font-weight: 600;
  padding: 0.4rem 0.9rem;
  border-radius: 999px;
  margin-bottom: 1.5rem;
}

.hero h1 {
  font-size: clamp(2.4rem, 5vw, 3.9rem);
  font-weight: 700;
}

.hero-sub {
  margin-top: 1.4rem;
  font-size: 1.13rem;
  color: var(--ink-soft);
  max-width: 34rem;
}

.hero-ctas { display: flex; gap: 0.9rem; margin-top: 2.2rem; flex-wrap: wrap; }

.hero-visual { position: relative; }
.hero-visual::before {
  content: "";
  position: absolute;
  inset: -12% -20% -12% -8%;
  background: radial-gradient(ellipse at 65% 40%, rgba(248, 23, 92, 0.10), transparent 68%);
  pointer-events: none;
}
.hero-visual .shot-frame {
  transform: perspective(1400px) rotateY(-4deg);
  width: 130%;
  max-width: none;
}

/* ---------- Screenshot frames ---------- */

.shot-frame {
  position: relative;
  border: 1px solid var(--line);
  border-radius: var(--radius-box);
  overflow: hidden;
  background: #fff;
  box-shadow: var(--shadow-shot);
}

/* ---------- Section heads ---------- */

section { padding-block: 6.5rem; }

.section-head { max-width: 44rem; }
.section-head h2 {
  font-size: clamp(1.9rem, 3.4vw, 2.7rem);
  font-weight: 700;
}
.section-head p {
  margin-top: 1rem;
  font-size: 1.08rem;
  color: var(--ink-soft);
}

/* ---------- Beta invitation ---------- */

.beta { background: var(--paper-tint); border-block: 1px solid var(--line); }

.beta-grid {
  display: grid;
  grid-template-columns: minmax(0, 7fr) minmax(0, 5fr);
  gap: 4rem;
  align-items: center;
}
.beta-copy h2 { font-size: clamp(1.9rem, 3.4vw, 2.7rem); font-weight: 700; }
.beta-copy p { margin-block: 1.2rem 2rem; color: var(--ink-soft); font-size: 1.08rem; }

.beta-stat { display: flex; flex-direction: column; gap: 0.8rem; }
.beta-stat-number {
  font-size: clamp(3rem, 6vw, 4.6rem);
  font-weight: 800;
  letter-spacing: -0.04em;
  line-height: 1;
  color: var(--accent);
  font-variant-numeric: tabular-nums;
}
.beta-stat-label { color: var(--ink-soft); max-width: 24rem; }

/* ---------- Concept ---------- */

.idea-pills {
  display: flex;
  flex-wrap: wrap;
  gap: 0.6rem;
  list-style: none;
  margin: 2.2rem 0 0;
  padding: 0;
}
.idea-pills li {
  border: 1px solid var(--line);
  border-radius: 999px;
  padding: 0.45rem 1rem;
  font-size: 0.92rem;
  font-weight: 500;
  color: var(--ink-soft);
}

.concept-shot { margin: 3rem 0 0; }
.concept-shot figcaption {
  margin-top: 1rem;
  font-size: 0.92rem;
  color: var(--ink-soft);
}

/* ---------- Platforms bento ---------- */

.platforms { padding-top: 0; }

.bento {
  display: grid;
  grid-template-columns: repeat(4, minmax(0, 1fr));
  gap: 1rem;
  margin-top: 3rem;
}
.bento-cell {
  border: 1px solid var(--line);
  border-radius: var(--radius-box);
  padding: 1.75rem;
  background: #fff;
  transition: border-color 0.25s var(--ease-out);
}
.bento-cell:hover { border-color: #c9c9d2; }
.bento-cell i { font-size: 1.7rem; color: var(--accent); }
.bento-cell h3 { font-size: 1.12rem; font-weight: 600; margin-top: 1rem; }
.bento-cell p { margin-top: 0.5rem; color: var(--ink-soft); font-size: 0.95rem; }

.cell-wide { grid-column: span 2; }

.cell-accent {
  background: linear-gradient(135deg, var(--accent-wash), #fff 70%);
  border-color: #fbd2dd;
}

.cell-shot {
  display: grid;
  grid-template-columns: minmax(0, 1fr) minmax(0, 1fr);
  gap: 1.25rem;
  align-items: end;
  overflow: hidden;
  padding-bottom: 0;
  padding-right: 0;
}
.cell-shot-copy { padding-bottom: 1.75rem; }
.cell-shot img {
  border-top-left-radius: 10px;
  border-left: 1px solid var(--line);
  border-top: 1px solid var(--line);
  min-width: 0;
  align-self: stretch;
  object-fit: cover;
  object-position: left top;
  height: 100%;
  max-height: 200px;
}

/* ---------- Personalization USP ---------- */

.usp { background: var(--paper-tint); border-block: 1px solid var(--line); overflow: hidden; }

.usp-grid {
  display: grid;
  grid-template-columns: minmax(0, 6fr) minmax(0, 6fr);
  gap: 4rem;
  align-items: center;
}
.usp-visual .shot-frame {
  width: 124%;
  max-width: none;
  margin-left: -24%;
}
.usp-copy h2 { font-size: clamp(1.9rem, 3.4vw, 2.6rem); font-weight: 700; }
.usp-copy > p { margin-top: 1.2rem; color: var(--ink-soft); font-size: 1.08rem; }

.usp-chips {
  display: flex;
  flex-wrap: wrap;
  gap: 0.55rem;
  list-style: none;
  margin: 1.8rem 0 0;
  padding: 0;
}
.usp-chips li {
  background: #fff;
  border: 1px solid var(--line);
  border-radius: 999px;
  padding: 0.4rem 0.95rem;
  font-size: 0.9rem;
  font-weight: 500;
}
.usp-note { margin-top: 1.8rem; color: var(--ink-soft); }

/* ---------- How it works ---------- */

.steps {
  display: grid;
  grid-template-columns: repeat(3, minmax(0, 1fr));
  gap: 2.5rem 2rem;
  margin-top: 3rem;
}
.step i { font-size: 1.6rem; color: var(--accent); }
.step h3 { font-size: 1.08rem; font-weight: 600; margin-top: 0.9rem; }
.step p { margin-top: 0.45rem; color: var(--ink-soft); font-size: 0.95rem; }

/* ---------- Use cases ---------- */

.cases { padding-bottom: 0; }

.cases-track {
  display: flex;
  gap: 1rem;
  overflow-x: auto;
  scroll-snap-type: x mandatory;
  padding: 3rem max(24px, calc((100vw - 1180px) / 2 + 24px)) 1rem;
  scrollbar-width: thin;
}
.case-card {
  scroll-snap-align: start;
  flex: 0 0 320px;
  border: 1px solid var(--line);
  border-radius: var(--radius-box);
  padding: 1.75rem;
  background: #fff;
}
.case-card h3 { font-size: 1.1rem; font-weight: 600; }
.case-card p { margin-top: 0.6rem; color: var(--ink-soft); font-size: 0.95rem; }

/* ---------- Privacy ---------- */

.principles {
  display: grid;
  grid-template-columns: repeat(2, minmax(0, 1fr));
  gap: 2.75rem 4rem;
  margin-top: 3rem;
}
.principle {
  border-top: 1px solid var(--line);
  padding-top: 1.5rem;
}
.principle h3 { font-size: 1.15rem; font-weight: 600; }
.principle p { margin-top: 0.6rem; color: var(--ink-soft); }

/* ---------- Final CTA (single deliberate dark block) ---------- */

.final { background: var(--ink); color: #fff; }

.final-inner { max-width: 46rem; }
.final h2 { font-size: clamp(1.9rem, 3.4vw, 2.7rem); font-weight: 700; }
.final > .final-inner p, .final-inner > p {
  margin-top: 1.2rem;
  color: rgba(255, 255, 255, 0.72);
  font-size: 1.08rem;
}

.final-chips {
  display: flex;
  flex-wrap: wrap;
  gap: 0.55rem;
  list-style: none;
  margin: 1.9rem 0 0;
  padding: 0;
}
.final-chips li {
  border: 1px solid rgba(255, 255, 255, 0.22);
  border-radius: 999px;
  padding: 0.4rem 0.95rem;
  font-size: 0.9rem;
  color: rgba(255, 255, 255, 0.85);
}

.final-ctas { display: flex; gap: 0.9rem; margin-top: 2.4rem; flex-wrap: wrap; }

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

.footer { border-top: 1px solid var(--line); padding-block: 3.5rem 2rem; }

.footer-grid {
  display: flex;
  justify-content: space-between;
  gap: 2rem;
  flex-wrap: wrap;
}
.footer-brand p { margin-top: 0.9rem; color: var(--ink-soft); font-size: 0.95rem; }

.footer-links { display: flex; gap: 1.75rem; flex-wrap: wrap; align-items: flex-start; }
.footer-links a {
  color: var(--ink-soft);
  text-decoration: none;
  font-size: 0.95rem;
  transition: color 0.2s var(--ease-out);
}
.footer-links a:hover { color: var(--ink); }

.footer-base { margin-top: 3rem; }
.footer-base p { color: var(--ink-soft); font-size: 0.88rem; }

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

@media (prefers-reduced-motion: no-preference) {
  .anim-1, .anim-2, .anim-3, .anim-4, .anim-5 {
    opacity: 0;
    transform: translateY(22px);
    animation: rise 0.8s var(--ease-out) forwards;
  }
  .anim-2 { animation-delay: 0.08s; }
  .anim-3 { animation-delay: 0.16s; }
  .anim-4 { animation-delay: 0.24s; }
  .anim-5 { animation-delay: 0.2s; }

  @keyframes rise {
    to { opacity: 1; transform: translateY(0); }
  }

  .reveal {
    opacity: 0;
    transform: translateY(24px);
    transition: opacity 0.7s var(--ease-out), transform 0.7s var(--ease-out);
  }
  .reveal.is-visible { opacity: 1; transform: translateY(0); }
}

/* ---------- Responsive ---------- */

@media (max-width: 1024px) {
  .nav-links { display: none; }
  .hero-grid { grid-template-columns: 1fr; gap: 3rem; }
  .hero-visual .shot-frame { width: 100%; transform: none; }
  .bento { grid-template-columns: repeat(2, minmax(0, 1fr)); }
  .steps { grid-template-columns: repeat(2, minmax(0, 1fr)); }
  .usp-grid { grid-template-columns: 1fr; gap: 3rem; }
  .usp-visual { order: 2; }
  .usp-visual .shot-frame { width: 100%; margin-left: 0; }
}

@media (max-width: 768px) {
  section { padding-block: 4rem; }
  .hero { padding-block: 3.5rem 4.5rem; }
  .beta-grid { grid-template-columns: 1fr; gap: 2.5rem; }
  .bento { grid-template-columns: 1fr; }
  .cell-wide { grid-column: auto; }
  .cell-shot { grid-template-columns: 1fr; padding-right: 1.75rem; padding-bottom: 1.75rem; }
  .cell-shot img { display: none; }
  .steps { grid-template-columns: 1fr; gap: 2rem; }
  .principles { grid-template-columns: 1fr; gap: 2rem; }
  .case-card { flex-basis: 280px; }
}