/* ===== FlowShelf — marketing site ===== */
:root {
  --bg: #0f0f0f;
  --surface: #1c1c1c;
  --surface-2: #161616;
  --border: rgba(255, 255, 255, 0.07);
  --border-strong: rgba(255, 255, 255, 0.12);
  --accent: #ffc107;
  --accent-soft: rgba(255, 193, 7, 0.14);
  --text: #ffffff;
  --text-2: #e6e6e6;
  --text-3: #a0a0a0;
  --radius: 20px;
  --radius-sm: 14px;
  --maxw: 1180px;
  --shadow: 0 24px 60px rgba(0, 0, 0, 0.55);
  --glow: 0 0 40px rgba(255, 193, 7, 0.28);
}

* { box-sizing: border-box; margin: 0; padding: 0; }

html { scroll-behavior: smooth; scroll-padding-top: 90px; }

body {
  font-family: "SF Pro Display", -apple-system, BlinkMacSystemFont, "Inter", "Segoe UI", sans-serif;
  background: var(--bg);
  color: var(--text-2);
  line-height: 1.6;
  -webkit-font-smoothing: antialiased;
  overflow-x: hidden;
  position: relative;
}

.container { width: 100%; max-width: var(--maxw); margin: 0 auto; padding: 0 24px; }

/* ===== Ambient background ===== */
.bg-texture {
  position: fixed; inset: 0; z-index: -2;
  background:
    radial-gradient(1200px 700px at 80% -10%, rgba(255, 193, 7, 0.05), transparent 60%),
    radial-gradient(900px 600px at -10% 10%, rgba(255, 255, 255, 0.025), transparent 60%),
    var(--bg);
}
.bg-streak {
  position: fixed; top: -10%; right: -10%; width: 70vw; height: 80vh; z-index: -1;
  background: url("../assets/bg-gradient.png") no-repeat center / cover;
  opacity: 0.5; filter: saturate(1.1); pointer-events: none;
  mask-image: radial-gradient(closest-side, #000 55%, transparent 100%);
  -webkit-mask-image: radial-gradient(closest-side, #000 55%, transparent 100%);
}

/* ===== Typography helpers ===== */
.accent { color: var(--accent); }
.h2 { font-size: clamp(1.8rem, 3.6vw, 2.7rem); font-weight: 700; color: var(--text); letter-spacing: -0.02em; line-height: 1.1; }
.lead { color: var(--text-3); font-size: 1.06rem; margin-top: 12px; max-width: 46ch; }

/* ===== Buttons ===== */
.btn {
  display: inline-flex; align-items: center; gap: 10px;
  font-weight: 600; font-size: 0.95rem; color: var(--text);
  border: 1px solid var(--border-strong); border-radius: 999px;
  padding: 11px 20px; cursor: pointer; text-decoration: none;
  transition: transform 0.2s ease, box-shadow 0.2s ease, background 0.2s ease, border-color 0.2s ease;
}
.btn:hover { transform: translateY(-2px); }
.btn--primary {
  background: var(--accent); color: #1a1500; border-color: transparent;
  box-shadow: 0 8px 24px rgba(255, 193, 7, 0.28);
}
.btn--primary:hover { box-shadow: 0 12px 34px rgba(255, 193, 7, 0.42); }
.btn--ghost { background: rgba(255, 255, 255, 0.04); }
.btn--ghost:hover { background: rgba(255, 255, 255, 0.08); }
.btn--lg { padding: 14px 24px; }
.btn__stack { display: flex; flex-direction: column; line-height: 1.15; text-align: left; }
.btn__stack small { font-weight: 500; font-size: 0.72rem; opacity: 0.7; }

/* ===== NAV ===== */
.nav {
  position: sticky; top: 0; z-index: 50;
  backdrop-filter: blur(14px); -webkit-backdrop-filter: blur(14px);
  background: rgba(15, 15, 15, 0.6);
  border-bottom: 1px solid transparent;
  transition: background 0.3s ease, border-color 0.3s ease;
}
.nav.is-scrolled { background: rgba(15, 15, 15, 0.85); border-bottom-color: var(--border); }
.nav__inner { display: flex; align-items: center; gap: 24px; height: 70px; }
.brand { display: flex; align-items: center; gap: 10px; text-decoration: none; color: var(--text); }
.brand__icon { border-radius: 9px; }
.brand__word { font-weight: 700; font-size: 1.18rem; letter-spacing: -0.01em; }
.nav__links { display: flex; gap: 28px; margin-left: auto; }
.nav__links a { color: var(--text-3); text-decoration: none; font-size: 0.95rem; font-weight: 500; transition: color 0.2s ease; }
.nav__links a:hover { color: var(--text); }
.nav__cta { margin-left: 4px; }
.nav__menu { display: none; flex-direction: column; gap: 5px; background: none; border: 0; cursor: pointer; padding: 8px; }
.nav__menu span { width: 22px; height: 2px; background: var(--text); border-radius: 2px; transition: 0.25s; }

/* ===== HERO ===== */
.hero { display: grid; grid-template-columns: 1.05fr 0.95fr; gap: 40px; align-items: center; padding: 72px 24px 60px; }
.pill {
  display: inline-block; font-size: 0.8rem; font-weight: 500; color: var(--text-2);
  padding: 6px 14px; border: 1px solid var(--border-strong); border-radius: 999px;
  background: rgba(255, 255, 255, 0.03);
}
.hero__title {
  font-size: clamp(2.6rem, 5.6vw, 4.1rem); font-weight: 700; color: var(--text);
  letter-spacing: -0.03em; line-height: 1.02; margin: 22px 0 18px;
}
.hero__sub { font-size: 1.12rem; color: var(--text-3); max-width: 48ch; }
.hero__actions { display: flex; flex-wrap: wrap; gap: 14px; margin: 30px 0 26px; }
.chips { list-style: none; display: flex; flex-wrap: wrap; gap: 10px 18px; }
.chip { display: inline-flex; align-items: center; gap: 8px; font-size: 0.84rem; color: var(--text-3); }
.chip__dot { width: 6px; height: 6px; border-radius: 50%; background: var(--accent); box-shadow: 0 0 8px var(--accent); }

.hero__art { position: relative; display: grid; place-items: center; }
.hero__glow {
  position: absolute; width: 80%; aspect-ratio: 1; border-radius: 50%;
  background: radial-gradient(circle, rgba(255, 193, 7, 0.4), transparent 65%);
  filter: blur(50px); z-index: 0;
}
.hero__icon {
  position: relative; z-index: 1; width: min(420px, 80%); height: auto;
  filter: drop-shadow(0 40px 70px rgba(0, 0, 0, 0.6));
  animation: float 6s ease-in-out infinite;
}
@keyframes float { 0%, 100% { transform: translateY(0); } 50% { transform: translateY(-14px); } }

/* ===== Window frame ===== */
.window {
  border: 1px solid var(--border-strong); border-radius: var(--radius);
  background: linear-gradient(180deg, #1e1e1e, #141414);
  box-shadow: var(--shadow), 0 0 0 1px rgba(255, 255, 255, 0.02);
  overflow: hidden; backdrop-filter: blur(8px);
}
.window__bar { display: flex; gap: 8px; padding: 13px 16px; border-bottom: 1px solid var(--border); background: rgba(255, 255, 255, 0.02); }
.dot { width: 12px; height: 12px; border-radius: 50%; }
.dot--red { background: #ff5f57; } .dot--amber { background: #febc2e; } .dot--green { background: #28c840; }

.showcase { padding: 30px 24px 70px; }
.showcase .window__body { display: grid; grid-template-columns: 240px 1fr; min-height: 440px; }

/* ===== App recreation ===== */
.app__sidebar { border-right: 1px solid var(--border); padding: 18px 14px; background: rgba(0, 0, 0, 0.25); }
.app__brand { display: flex; align-items: center; gap: 9px; font-weight: 700; color: var(--text); padding: 4px 8px 16px; }
.app__brand img { border-radius: 7px; }
.app__nav { display: flex; flex-direction: column; gap: 4px; }
.app__item { display: flex; align-items: center; gap: 11px; padding: 9px 11px; border-radius: 11px; cursor: pointer; transition: background 0.2s; }
.app__item:hover { background: rgba(255, 255, 255, 0.04); }
.app__item--active { background: var(--accent-soft); }
.app__ico { width: 24px; text-align: center; font-size: 1rem; }
.app__labels { display: flex; flex-direction: column; line-height: 1.2; }
.app__labels strong { color: var(--text); font-size: 0.9rem; font-weight: 600; }
.app__labels small { color: var(--text-3); font-size: 0.72rem; }
.app__item--active .app__labels strong { color: var(--accent); }

.app__main { padding: 18px 20px; display: flex; flex-direction: column; min-width: 0; }
.app__head { display: flex; align-items: center; justify-content: space-between; gap: 16px; margin-bottom: 14px; }
.app__title { font-size: 1.2rem; font-weight: 700; color: var(--text); }
.app__count { font-size: 0.78rem; color: var(--text-3); font-weight: 500; }
.app__search { font-size: 0.8rem; color: var(--text-3); border: 1px solid var(--border); border-radius: 9px; padding: 7px 12px; min-width: 160px; background: rgba(0, 0, 0, 0.25); }
.app__filters { display: flex; flex-wrap: wrap; gap: 7px; margin-bottom: 14px; }
.tag { font-size: 0.74rem; color: var(--text-3); padding: 5px 11px; border-radius: 999px; border: 1px solid var(--border); background: rgba(255, 255, 255, 0.02); }
.tag--active { color: #1a1500; background: var(--accent); border-color: transparent; font-weight: 600; }

.app__list { list-style: none; display: flex; flex-direction: column; overflow: hidden; }
.row { display: flex; align-items: center; gap: 12px; padding: 9px 6px; border-bottom: 1px solid rgba(255, 255, 255, 0.04); }
.row:hover { background: rgba(255, 255, 255, 0.03); }
.row__thumb { width: 34px; height: 34px; flex: 0 0 34px; display: grid; place-items: center; border-radius: 8px; background: rgba(255, 255, 255, 0.05); font-size: 0.95rem; }
.row__meta { display: flex; flex-direction: column; min-width: 0; flex: 1; }
.row__meta strong { color: var(--text); font-size: 0.86rem; font-weight: 500; white-space: nowrap; overflow: hidden; text-overflow: ellipsis; }
.row__meta small { color: var(--text-3); font-size: 0.72rem; white-space: nowrap; overflow: hidden; text-overflow: ellipsis; }
.row__time { color: var(--text-3); font-size: 0.72rem; white-space: nowrap; }

/* ===== Split section ===== */
.split { display: grid; grid-template-columns: 1fr 1fr; gap: 48px; align-items: center; padding: 60px 24px; }
.window--mini .window__body--mini { padding: 22px; display: flex; flex-direction: column; gap: 12px; min-height: 280px; }
.mini-row { height: 30px; border-radius: 9px; background: rgba(255, 255, 255, 0.05); }
.mini-row--accent { background: var(--accent-soft); border: 1px solid rgba(255, 193, 7, 0.3); }
.checks { list-style: none; margin-top: 22px; display: flex; flex-direction: column; gap: 14px; }
.checks li { display: flex; align-items: center; gap: 12px; color: var(--text-2); font-size: 1.02rem; }
.check { flex: 0 0 24px; width: 24px; height: 24px; display: grid; place-items: center; border-radius: 50%; background: var(--accent-soft); color: var(--accent); font-size: 0.8rem; font-weight: 700; }

/* ===== Feature grid ===== */
.features { padding: 40px 24px; }
.grid { display: grid; grid-template-columns: repeat(4, 1fr); gap: 18px; }
.card {
  background: var(--surface); border: 1px solid var(--border); border-radius: var(--radius);
  padding: 26px 22px; transition: transform 0.25s ease, border-color 0.25s ease, box-shadow 0.25s ease;
}
.card:hover { transform: translateY(-4px); border-color: var(--border-strong); box-shadow: var(--shadow); }
.card__icon {
  width: 52px; height: 52px; border-radius: var(--radius-sm); display: grid; place-items: center;
  color: var(--accent); background: var(--accent-soft); margin-bottom: 16px;
}
.card h3 { color: var(--text); font-size: 1.18rem; font-weight: 600; margin-bottom: 8px; }
.card p { color: var(--text-3); font-size: 0.95rem; }

/* ===== Install ===== */
.install { padding: 60px 24px; }
.install__head { text-align: center; margin-bottom: 36px; }
.install__head .lead { margin: 12px auto 0; }
.install__steps { display: grid; grid-template-columns: 1fr 1fr; gap: 40px; align-items: center; }
.dragbox {
  display: flex; align-items: center; justify-content: center; gap: 18px;
  background: var(--surface); border: 1px solid var(--border); border-radius: var(--radius);
  padding: 40px 24px;
}
.dragbox__app { display: flex; flex-direction: column; align-items: center; gap: 10px; font-size: 0.85rem; color: var(--text-2); }
.dragbox__app img { border-radius: 14px; box-shadow: var(--shadow); }
.dragbox__arrow { color: var(--accent); }
.steps { list-style: none; counter-reset: s; display: flex; flex-direction: column; gap: 20px; }
.steps li { display: flex; gap: 16px; }
.steps__n {
  flex: 0 0 36px; width: 36px; height: 36px; border-radius: 50%; display: grid; place-items: center;
  background: var(--accent); color: #1a1500; font-weight: 700;
}
.steps li strong { color: var(--text); display: block; font-size: 1.02rem; }
.steps li p { color: var(--text-3); font-size: 0.92rem; }
.steps code { background: rgba(255, 255, 255, 0.07); padding: 1px 7px; border-radius: 6px; font-size: 0.86em; color: var(--text-2); }
.install__note {
  display: flex; align-items: center; gap: 10px; justify-content: center; flex-wrap: wrap;
  margin-top: 30px; padding: 14px 20px; border-radius: var(--radius-sm);
  background: var(--accent-soft); border: 1px solid rgba(255, 193, 7, 0.2);
  color: var(--text-2); font-size: 0.9rem;
}
.install__note svg { color: var(--accent); flex: 0 0 auto; }
.install__note strong { color: var(--text); }

/* ===== Why band ===== */
.why { padding: 40px 24px 60px; }
.why__grid {
  display: grid; grid-template-columns: repeat(4, 1fr); gap: 18px;
  background: var(--surface); border: 1px solid var(--border); border-radius: var(--radius); padding: 32px 26px;
}
.why__item { display: flex; flex-direction: column; gap: 8px; }
.why__icon { width: 44px; height: 44px; border-radius: 12px; display: grid; place-items: center; color: var(--accent); background: var(--accent-soft); }
.why__item h4 { color: var(--text); font-size: 1.02rem; font-weight: 600; }
.why__item p { color: var(--text-3); font-size: 0.9rem; }

/* ===== Built in the open ===== */
.open { padding: 40px 24px; }
.open__card {
  position: relative; overflow: hidden; max-width: 820px; margin: 0 auto; text-align: center;
  background: var(--surface); border: 1px solid var(--border); border-radius: var(--radius); padding: 44px 36px;
}
.open__glow {
  position: absolute; top: -60%; left: 50%; transform: translateX(-50%);
  width: 500px; height: 500px; background: radial-gradient(circle, rgba(255, 193, 7, 0.12), transparent 60%);
  filter: blur(30px); pointer-events: none;
}
.open__glyph {
  position: relative; display: inline-grid; place-items: center; width: 56px; height: 56px;
  border-radius: var(--radius-sm); background: var(--accent-soft); color: var(--accent);
  font-family: ui-monospace, "SF Mono", Menlo, monospace; font-weight: 700; font-size: 1.2rem; margin-bottom: 18px;
}
.open__card .h2, .open__card .lead { position: relative; }
.open__card .lead { margin: 12px auto 24px; }
.open__actions { position: relative; display: flex; flex-wrap: wrap; gap: 12px; justify-content: center; }

/* ===== FAQ ===== */
.faq { padding: 50px 24px 30px; }
.faq__head { text-align: center; margin-bottom: 32px; }
.faq__head .lead { margin: 12px auto 0; }
.faq__list { max-width: 820px; margin: 0 auto; display: flex; flex-direction: column; gap: 12px; }
.faq__item {
  background: var(--surface); border: 1px solid var(--border); border-radius: var(--radius-sm);
  padding: 4px 20px; transition: border-color 0.2s ease;
}
.faq__item[open] { border-color: var(--border-strong); }
.faq__item summary {
  display: flex; align-items: center; justify-content: space-between; gap: 16px;
  list-style: none; cursor: pointer; padding: 16px 0; color: var(--text);
  font-weight: 600; font-size: 1.02rem;
}
.faq__item summary::-webkit-details-marker { display: none; }
.faq__item summary::after {
  content: "+"; color: var(--accent); font-size: 1.4rem; font-weight: 400; line-height: 1;
  transition: transform 0.25s ease; flex: 0 0 auto;
}
.faq__item[open] summary::after { transform: rotate(45deg); }
.faq__item p { color: var(--text-3); font-size: 0.95rem; padding: 0 0 18px; max-width: 64ch; }

/* ===== Download CTA ===== */
.cta { padding: 40px 24px 80px; }
.cta__card {
  position: relative; overflow: hidden; text-align: center;
  background: linear-gradient(180deg, #1f1f1f, #141414);
  border: 1px solid var(--border-strong); border-radius: 28px; padding: 56px 28px;
}
.cta__glow {
  position: absolute; top: -50%; left: 50%; transform: translateX(-50%);
  width: 600px; height: 600px; background: radial-gradient(circle, rgba(255, 193, 7, 0.18), transparent 60%);
  filter: blur(30px); pointer-events: none;
}
.cta__card .h2, .cta__card .lead { position: relative; }
.cta__card .lead { margin: 12px auto 26px; }
.cta__card .btn { position: relative; }

/* ===== Footer ===== */
.footer { border-top: 1px solid var(--border); padding: 48px 0 30px; margin-top: 20px; }
.footer__inner { display: flex; justify-content: space-between; gap: 30px; flex-wrap: wrap; }
.footer__tag { color: var(--text-3); font-size: 0.9rem; margin-top: 12px; max-width: 34ch; }
.footer__links { display: flex; flex-wrap: wrap; gap: 22px; align-items: flex-start; }
.footer__links a { color: var(--text-3); text-decoration: none; font-size: 0.92rem; transition: color 0.2s; }
.footer__links a:hover { color: var(--accent); }
.footer__base { display: flex; justify-content: space-between; gap: 16px; flex-wrap: wrap; margin-top: 34px; padding-top: 22px; border-top: 1px solid var(--border); color: var(--text-3); font-size: 0.84rem; }

/* ===== Reviews & feedback ===== */
.reviews { padding: 50px 24px; }
.reviews__head { text-align: center; margin-bottom: 30px; }
.reviews__head .lead { margin: 12px auto 0; }
.tabs { max-width: 820px; margin: 0 auto; }
.tabs__nav {
  display: flex; gap: 6px; padding: 6px; margin-bottom: 22px;
  background: var(--surface-2); border: 1px solid var(--border); border-radius: 999px;
}
.tabs__btn {
  flex: 1; border: 0; background: transparent; cursor: pointer;
  color: var(--text-3); font: inherit; font-weight: 600; font-size: 0.92rem;
  padding: 10px 14px; border-radius: 999px; transition: background 0.2s, color 0.2s;
}
.tabs__btn:hover { color: var(--text-2); }
.tabs__btn.is-active { background: var(--accent); color: #1a1500; }
.tabs__count { font-weight: 700; opacity: 0.8; }
.tabs__panel { animation: fade 0.3s ease; }
@keyframes fade { from { opacity: 0; transform: translateY(6px); } to { opacity: 1; transform: none; } }

.reviews__summary { display: flex; align-items: center; gap: 12px; justify-content: center; margin-bottom: 22px; }
.reviews__avg { font-size: 2rem; font-weight: 700; color: var(--text); line-height: 1; }
.reviews__avgstars { color: var(--accent); letter-spacing: 2px; font-size: 1.1rem; }
.reviews__total { color: var(--text-3); font-size: 0.88rem; }
.reviews__list { display: flex; flex-direction: column; gap: 14px; }
.reviews__empty { color: var(--text-3); text-align: center; padding: 26px 0; }
.review {
  background: var(--surface); border: 1px solid var(--border); border-radius: var(--radius-sm);
  padding: 18px 20px;
}
.review__top { display: flex; align-items: center; justify-content: space-between; gap: 12px; margin-bottom: 8px; }
.review__who { display: flex; align-items: center; gap: 10px; min-width: 0; }
.review__avatar { width: 34px; height: 34px; flex: 0 0 34px; border-radius: 50%; display: grid; place-items: center; background: var(--accent-soft); color: var(--accent); font-weight: 700; font-size: 0.85rem; }
.review__name { color: var(--text); font-weight: 600; font-size: 0.95rem; white-space: nowrap; overflow: hidden; text-overflow: ellipsis; }
.review__stars { color: var(--accent); letter-spacing: 1px; font-size: 0.9rem; flex: 0 0 auto; }
.review__stars .off { color: rgba(255, 255, 255, 0.18); }
.review__text { color: var(--text-2); font-size: 0.95rem; }
.review__date { color: var(--text-3); font-size: 0.76rem; margin-top: 8px; }

/* Forms */
.form { background: var(--surface); border: 1px solid var(--border); border-radius: var(--radius); padding: 26px 24px; }
.field { margin-bottom: 16px; }
.field label { display: block; color: var(--text-2); font-size: 0.88rem; font-weight: 600; margin-bottom: 8px; }
.field .opt { color: var(--text-3); font-weight: 400; }
.field input, .field textarea {
  width: 100%; background: var(--surface-2); border: 1px solid var(--border-strong); border-radius: var(--radius-sm);
  color: var(--text); font: inherit; font-size: 0.95rem; padding: 11px 14px; resize: vertical;
  transition: border-color 0.2s, box-shadow 0.2s;
}
.field input::placeholder, .field textarea::placeholder { color: var(--text-3); }
.field input:focus, .field textarea:focus { outline: none; border-color: var(--accent); box-shadow: 0 0 0 3px var(--accent-soft); }
.stars { display: inline-flex; gap: 4px; }
.star {
  background: none; border: 0; cursor: pointer; padding: 2px;
  font-size: 1.7rem; line-height: 1; color: rgba(255, 255, 255, 0.18); transition: color 0.15s, transform 0.1s;
}
.star:hover { transform: scale(1.12); }
.star.is-on { color: var(--accent); }
.form .btn { margin-top: 4px; }
.form__note { color: var(--text-3); font-size: 0.8rem; margin-top: 12px; }
.form__status { font-size: 0.9rem; margin-top: 10px; min-height: 1.2em; }
.form__status.is-ok { color: #28c840; }
.form__status.is-err { color: #ff7a72; }
.hp { position: absolute !important; left: -9999px !important; width: 1px; height: 1px; opacity: 0; }

/* ===== Reveal animation ===== */
.reveal { opacity: 0; transform: translateY(26px); transition: opacity 0.7s ease, transform 0.7s ease; }
.reveal.is-visible { opacity: 1; transform: none; }

/* ===== Responsive ===== */
@media (max-width: 900px) {
  .hero { grid-template-columns: 1fr; text-align: center; padding-top: 48px; }
  .hero__sub, .chips, .hero__actions { justify-content: center; margin-left: auto; margin-right: auto; }
  .hero__art { order: -1; }
  .hero__icon { width: min(280px, 70%); animation: none; }
  .grid { grid-template-columns: repeat(2, 1fr); }
  .why__grid { grid-template-columns: repeat(2, 1fr); }
  .split, .install__steps { grid-template-columns: 1fr; }
  .nav__links { display: none; }
  .nav__cta { display: none; }
  .nav__menu { display: flex; margin-left: auto; }
  .nav__links.is-open {
    display: flex; flex-direction: column; position: absolute; top: 70px; left: 0; right: 0;
    background: rgba(15, 15, 15, 0.97); border-bottom: 1px solid var(--border); padding: 18px 24px; gap: 16px;
  }
  .showcase .window__body { grid-template-columns: 1fr; }
  .app__sidebar { display: none; }
}
@media (max-width: 560px) {
  .grid, .why__grid { grid-template-columns: 1fr; }
  .footer__base { justify-content: center; }
  .hero__title { font-size: 2.4rem; }
}

/* ===== Reduced motion ===== */
@media (prefers-reduced-motion: reduce) {
  * { animation: none !important; transition: none !important; }
  html { scroll-behavior: auto; }
  .reveal { opacity: 1; transform: none; }
}