/* styles.css — Astramoment. */
:root {
  --bg: #0f1220;
  --bg-soft: #171b2d;
  --card: #1d2236;
  --border: #2c3350;
  --text: #e8eaf2;
  --muted: #9aa0b8;
  --accent: #c9a6ff;
  --accent-2: #ffd98a;
  --danger: #ff8f8f;
}

* { box-sizing: border-box; }

html { scroll-behavior: smooth; }

body {
  margin: 0;
  font-family: -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto, Arial, sans-serif;
  background: var(--bg);
  color: var(--text);
  line-height: 1.6;
}

.container { max-width: 960px; margin: 0 auto; padding: 0 20px; }
.muted { color: var(--muted); }
.small { font-size: 0.85em; }
.error { color: var(--danger); }

/* ── Шапка ── */
.site-header, .app-header {
  background: var(--bg-soft);
  border-bottom: 1px solid var(--border);
  position: sticky;
  top: 0;
  z-index: 10;
}
.header-inner { display: flex; justify-content: space-between; align-items: center; }
.brand { font-size: 1.25rem; font-weight: 700; color: var(--text); text-decoration: none; letter-spacing: 0.5px; }
.site-header nav { display: flex; gap: 20px; align-items: center; }
.site-header nav a { color: var(--muted); text-decoration: none; }
.site-header nav a:hover { color: var(--text); }

/* ── Кнопки ── */
.btn {
  display: inline-block;
  padding: 10px 18px;
  border-radius: 8px;
  border: 1px solid var(--border);
  background: var(--card);
  color: var(--text);
  cursor: pointer;
  font-size: 0.95rem;
  text-decoration: none;
}
.btn:hover { border-color: var(--accent); }
.btn-primary { background: linear-gradient(135deg, var(--accent), var(--accent-2)); color: #13101d; border-color: transparent; font-weight: 600; }
.btn-primary:disabled { opacity: 0.6; cursor: wait; }
.btn-outline { border-color: var(--border); background: transparent; }
.btn-lg { padding: 14px 26px; font-size: 1.05rem; }
.btn-sm { padding: 6px 12px; font-size: 0.85rem; }

/* ── Лендинг ── */
.hero { text-align: center; padding: 90px 20px 60px; }
.hero h1 { font-size: 2.6rem; margin: 0 0 20px; }
.lead { max-width: 620px; margin: 0 auto 30px; color: var(--muted); font-size: 1.1rem; }
.hero-actions { display: flex; gap: 16px; justify-content: center; flex-wrap: wrap; }

.demo { background: var(--bg-soft); padding: 60px 0; }
.demo h2, .how h2, .pricing h2, .faq h2 { text-align: center; margin-bottom: 10px; }
.demo-form { display: flex; flex-direction: column; gap: 14px; max-width: 640px; margin: 20px auto 0; }
.demo-form textarea, textarea, input, select {
  width: 100%;
  padding: 12px;
  border-radius: 8px;
  border: 1px solid var(--border);
  background: #111424;
  color: var(--text);
  font: inherit;
}
.demo-form button { align-self: flex-start; }

.how { padding: 60px 0; }
.steps { display: grid; grid-template-columns: repeat(auto-fit, minmax(220px, 1fr)); gap: 20px; list-style: none; padding: 0; }
.steps li { background: var(--card); border: 1px solid var(--border); border-radius: 10px; padding: 20px; }
.steps li span { display: inline-flex; width: 28px; height: 28px; align-items: center; justify-content: center; border-radius: 50%; background: var(--accent); color: #13101d; font-weight: 700; margin-bottom: 10px; }

.pricing { background: var(--bg-soft); padding: 60px 0; }
.cards { display: grid; grid-template-columns: repeat(auto-fit, minmax(240px, 1fr)); gap: 20px; margin-top: 30px; }
.card { background: var(--card); border: 1px solid var(--border); border-radius: 12px; padding: 24px; display: flex; flex-direction: column; gap: 10px; }
.card-featured { border-color: var(--accent); }
.price { font-size: 1.5rem; font-weight: 700; margin: 0; }
.card ul { margin: 0; padding-left: 18px; color: var(--muted); }
.card .btn { margin-top: auto; }

.faq { padding: 60px 0; max-width: 640px; margin: 0 auto; }
.faq details { border: 1px solid var(--border); border-radius: 8px; padding: 14px 18px; margin-bottom: 12px; background: var(--card); }
.faq summary { cursor: pointer; font-weight: 600; }
.faq p { color: var(--muted); }

.site-footer { border-top: 1px solid var(--border); padding: 24px 0; color: var(--muted); font-size: 0.9rem; }

/* ── Приложение ── */
.app-body { background: var(--bg); }
.app-header .container { display: flex; justify-content: space-between; align-items: center; }
.app-nav { display: flex; gap: 6px; flex-wrap: wrap; }
.app-nav button {
  background: transparent;
  border: none;
  color: var(--muted);
  padding: 10px 14px;
  border-radius: 8px 8px 0 0;
  cursor: pointer;
  font: inherit;
}
.app-nav button:hover { color: var(--text); }
.app-nav button.active { color: var(--text); border-bottom: 2px solid var(--accent); }

.app-main { padding: 40px 20px 80px; }
.view { display: none; }
.view.active { display: block; }
.view h1 { margin-top: 0; }

#ask-form, #settings-form { display: flex; flex-direction: column; gap: 18px; max-width: 680px; }
#ask-form label, #settings-form label { font-weight: 600; }
#ask-form fieldset { border: 1px solid var(--border); border-radius: 10px; padding: 16px 18px; display: flex; flex-direction: column; gap: 8px; }
#ask-form legend { color: var(--muted); padding: 0 6px; }
#ask-form fieldset label, #ask-form label { font-weight: 400; }
.row { display: grid; grid-template-columns: 1fr 1fr; gap: 14px; }
#ask-form button[type="submit"] { align-self: flex-start; }

.answer-box {
  margin-top: 24px;
  background: var(--card);
  border: 1px solid var(--border);
  border-left: 4px solid var(--accent);
  border-radius: 10px;
  padding: 18px 22px;
}
.answer-bold { font-size: 1.02rem; }
.answer-detail { color: var(--muted); margin-top: 10px; }
details summary { cursor: pointer; color: var(--accent); }
.q-text { font-style: italic; color: var(--muted); margin: 4px 0 10px; }
.history-item { margin-bottom: 16px; text-align: left; }

@media (max-width: 640px) {
  .hero h1 { font-size: 1.8rem; }
  .header-inner, .app-header .container { flex-direction: column; }
  .row { grid-template-columns: 1fr; }
}