/* ══════════════════════════════════════════════════════════════
   Sinizza AI Workshop — Landing MVP
   Тёмная тема + оранжевый акцент. Mobile-first.
   ══════════════════════════════════════════════════════════════ */

:root {
  --bg:          #0A0F1E;
  --bg-alt:      #0D1322;
  --card:        #141B2E;
  --card-accent: #16203a;
  --border:      #1F2A40;
  --text:        #F5F5F7;
  --text-dim:    #9AA3B2;
  --accent:      #FF6B2B;
  --accent-2:    #FF8A4C;
  --accent-soft: rgba(255, 107, 43, 0.12);
  --radius:      16px;
  --maxw:        1120px;
}

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

html { scroll-behavior: smooth; }

body {
  font-family: 'Manrope', system-ui, -apple-system, sans-serif;
  background: var(--bg);
  color: var(--text);
  line-height: 1.55;
  -webkit-font-smoothing: antialiased;
  overflow-x: hidden;
}

.container {
  width: 100%;
  max-width: var(--maxw);
  margin: 0 auto;
  padding: 0 20px;
}

a { color: inherit; text-decoration: none; }

/* ─────────────── BUTTONS ─────────────── */
.btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: 8px;
  background: var(--accent);
  color: #fff;
  font-weight: 700;
  font-size: 16px;
  padding: 14px 26px;
  border: none;
  border-radius: 12px;
  cursor: pointer;
  transition: transform .15s ease, background .2s ease, box-shadow .2s ease;
  box-shadow: 0 6px 20px rgba(255, 107, 43, 0.25);
}
.btn:hover { background: var(--accent-2); transform: translateY(-2px); box-shadow: 0 10px 28px rgba(255, 107, 43, 0.35); }
.btn:active { transform: translateY(0); }
.btn--lg { padding: 17px 34px; font-size: 18px; }
.btn--sm { padding: 10px 18px; font-size: 14px; box-shadow: none; }
.btn--tg { background: #229ED9; box-shadow: 0 6px 20px rgba(34, 158, 217, 0.3); }
.btn--tg:hover { background: #2aa9e0; box-shadow: 0 10px 28px rgba(34, 158, 217, 0.4); }
.btn__tg-icon { width: 22px; height: 22px; }

/* ─────────────── HEADER ─────────────── */
.header {
  position: sticky;
  top: 0;
  z-index: 100;
  background: rgba(10, 15, 30, 0.85);
  backdrop-filter: blur(12px);
  border-bottom: 1px solid var(--border);
}
.header__inner {
  display: flex;
  align-items: center;
  justify-content: space-between;
  height: 64px;
}
.logo { font-weight: 800; font-size: 18px; letter-spacing: -0.3px; }
.logo span { color: var(--accent); }
.nav { display: flex; gap: 28px; }
.nav__link { color: var(--text-dim); font-size: 15px; font-weight: 500; transition: color .2s; }
.nav__link:hover { color: var(--text); }
.header .cta { display: inline-flex; }
.burger { display: none; flex-direction: column; gap: 5px; background: none; border: none; cursor: pointer; padding: 6px; }
.burger span { width: 24px; height: 2px; background: var(--text); border-radius: 2px; transition: .3s; }

/* ─────────────── HERO ─────────────── */
.hero {
  padding: 64px 0 80px;
  background:
    radial-gradient(900px 500px at 80% -10%, rgba(255,107,43,0.10), transparent 60%),
    var(--bg);
}
.hero__inner {
  display: grid;
  grid-template-columns: 1fr;
  gap: 44px;
}
.badge {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  background: var(--accent-soft);
  color: var(--accent-2);
  font-size: 14px;
  font-weight: 600;
  padding: 8px 14px;
  border-radius: 100px;
  border: 1px solid rgba(255,107,43,0.25);
  margin-bottom: 22px;
}
.badge__dot {
  width: 8px; height: 8px; border-radius: 50%;
  background: var(--accent);
  box-shadow: 0 0 0 0 rgba(255,107,43,0.6);
  animation: pulse 2s infinite;
}
@keyframes pulse {
  0%   { box-shadow: 0 0 0 0 rgba(255,107,43,0.6); }
  70%  { box-shadow: 0 0 0 8px rgba(255,107,43,0); }
  100% { box-shadow: 0 0 0 0 rgba(255,107,43,0); }
}
.hero__title {
  font-size: clamp(28px, 6vw, 46px);
  font-weight: 800;
  line-height: 1.12;
  letter-spacing: -0.5px;
  margin-bottom: 20px;
}
.hero__subtitle {
  font-size: clamp(16px, 2.4vw, 19px);
  color: var(--text-dim);
  max-width: 560px;
  margin-bottom: 26px;
}
.hero__for {
  display: block;
  margin-top: 10px;
  color: var(--text);
  font-weight: 600;
}
.proof { list-style: none; display: flex; flex-direction: column; gap: 14px; margin-bottom: 30px; }
.proof__item {
  display: flex; align-items: flex-start; gap: 11px;
  font-size: 15px; font-weight: 500; color: var(--text-dim);
}
.proof__item strong { color: var(--text); font-weight: 700; }
.proof__emoji { font-size: 20px; line-height: 1.4; flex-shrink: 0; }
.hero__actions { display: flex; flex-direction: column; align-items: flex-start; gap: 12px; }
.hero__hint { color: var(--text-dim); font-size: 14px; }

.hero__aside { display: flex; flex-direction: column; gap: 18px; }
.hero__photo {
  width: 100%;
  aspect-ratio: 4 / 3;
  border-radius: var(--radius);
  object-fit: cover;
}
.placeholder {
  display: flex; flex-direction: column; align-items: center; justify-content: center;
  gap: 6px;
  background: linear-gradient(135deg, #16203a, #0e1525);
  border: 1.5px dashed var(--border);
  color: var(--text-dim);
}
.placeholder span { font-weight: 700; font-size: 15px; letter-spacing: 1px; }
.placeholder small { font-size: 12px; opacity: 0.7; }
.hero__quote {
  background: var(--card);
  border-left: 3px solid var(--accent);
  border-radius: 10px;
  padding: 18px 20px;
  font-size: 15px;
  font-style: italic;
  color: var(--text);
}
.hero__quote cite {
  display: block;
  margin-top: 10px;
  font-style: normal;
  font-weight: 700;
  color: var(--accent-2);
}

/* ─────────────── SECTIONS ─────────────── */
.section { padding: 72px 0; }
.section--alt { background: var(--bg-alt); }
.section__title {
  font-size: clamp(24px, 4vw, 34px);
  font-weight: 800;
  letter-spacing: -0.4px;
  margin-bottom: 36px;
  text-align: center;
}
.section__lead {
  text-align: center;
  color: var(--text-dim);
  font-size: 16px;
  max-width: 640px;
  margin: -22px auto 36px;
}

/* ─────────────── CARDS ─────────────── */
.cards { display: grid; gap: 18px; }
.cards--2 { grid-template-columns: 1fr; }
.cards--3 { grid-template-columns: 1fr; }
.card {
  background: var(--card);
  border: 1px solid var(--border);
  border-radius: var(--radius);
  padding: 26px;
  transition: transform .2s ease, border-color .2s ease;
}
.card:hover { transform: translateY(-3px); border-color: rgba(255,107,43,0.4); }
.card--accent { background: var(--card-accent); }
.card__icon { font-size: 30px; margin-bottom: 14px; }
.card__title { font-size: 18px; font-weight: 700; margin-bottom: 8px; line-height: 1.3; }
.card__text { color: var(--text-dim); font-size: 15px; }

/* ─────────────── PRICE ─────────────── */
.price {
  display: grid;
  grid-template-columns: 1fr;
  gap: 28px;
  background: var(--card);
  border: 1px solid var(--border);
  border-radius: 22px;
  padding: 34px;
  max-width: 920px;
  margin: 0 auto;
}
.price__main { text-align: center; display: flex; flex-direction: column; align-items: center; gap: 12px; }
.price__amount { font-size: clamp(40px, 9vw, 60px); font-weight: 800; color: var(--accent); letter-spacing: -1px; line-height: 1; }
.price__per { color: var(--text-dim); font-size: 15px; margin-bottom: 8px; }
.price__seats { font-size: 14px; color: var(--text-dim); }
.price__seats strong { color: var(--accent-2); }
.price__heading { font-size: 18px; font-weight: 700; margin-bottom: 14px; }
.checklist { list-style: none; display: flex; flex-direction: column; gap: 10px; margin-bottom: 18px; }
.checklist li { position: relative; padding-left: 28px; font-size: 15px; }
.checklist li::before {
  content: "✓"; position: absolute; left: 0; top: 0;
  color: var(--accent); font-weight: 800;
}
.price__compare { color: var(--text-dim); font-size: 13px; font-style: italic; margin-bottom: 18px; }
.price__meta { display: flex; flex-wrap: wrap; gap: 14px; font-size: 14px; color: var(--text-dim); }

/* ─────────────── AUTHOR (КТО ВЕДЁТ) ─────────────── */
.author {
  display: grid;
  grid-template-columns: 1fr;
  gap: 28px;
  max-width: 920px;
  margin: 0 auto;
}
.author__photo {
  width: 100%;
  aspect-ratio: 1 / 1;
  object-fit: cover;
  border-radius: var(--radius);
  border: 1px solid var(--border);
}
.author__name { font-size: 24px; font-weight: 800; letter-spacing: -0.3px; margin-bottom: 6px; }
.author__status { color: var(--accent-2); font-weight: 700; font-size: 15px; margin-bottom: 16px; }
.author__lead { color: var(--text-dim); font-size: 16px; margin-bottom: 18px; }
.author__did { margin-bottom: 18px; }
.author__did li { font-size: 15px; }
.author__did strong { color: var(--accent-2); }
.author__close { font-style: italic; color: var(--text); font-size: 15px; }

@media (min-width: 720px) {
  .author { grid-template-columns: 0.8fr 1.2fr; align-items: center; gap: 40px; }
}

/* ─────────────── FAQ ─────────────── */
.faq { max-width: 760px; margin: 0 auto; display: flex; flex-direction: column; gap: 12px; }
.faq__item {
  background: var(--card);
  border: 1px solid var(--border);
  border-radius: var(--radius);
  padding: 0 22px;
  transition: border-color .2s ease;
}
.faq__item[open] { border-color: rgba(255,107,43,0.4); }
.faq__q {
  list-style: none;
  cursor: pointer;
  font-size: 17px;
  font-weight: 700;
  padding: 20px 34px 20px 0;
  position: relative;
  outline: none;
}
.faq__q::-webkit-details-marker { display: none; }
.faq__q::after {
  content: "+";
  position: absolute;
  right: 0;
  top: 50%;
  transform: translateY(-50%);
  font-size: 24px;
  font-weight: 400;
  color: var(--accent);
  transition: transform .2s ease;
}
.faq__item[open] .faq__q::after { content: "−"; }
.faq__a {
  color: var(--text-dim);
  font-size: 15px;
  line-height: 1.6;
  padding: 0 0 22px;
}

/* ─────────────── FINAL CTA ─────────────── */
.section--cta {
  background:
    radial-gradient(700px 400px at 50% 0%, rgba(255,107,43,0.10), transparent 60%),
    var(--bg-alt);
  text-align: center;
}
.final { display: flex; flex-direction: column; align-items: center; gap: 18px; }
.final__title { font-size: clamp(24px, 4.5vw, 36px); font-weight: 800; letter-spacing: -0.4px; }
.final__text { color: var(--text-dim); max-width: 540px; font-size: 16px; }
.final__hint { color: var(--text-dim); font-size: 14px; }

/* ─────────────── FOOTER ─────────────── */
.footer { border-top: 1px solid var(--border); padding: 24px 0; }
.footer__inner {
  display: flex; flex-wrap: wrap; gap: 12px;
  align-items: center; justify-content: space-between;
  color: var(--text-dim); font-size: 13px;
}
.footer__link:hover { color: var(--text); }

/* ─────────────── STICKY MOBILE CTA ─────────────── */
.sticky-cta {
  position: fixed;
  left: 16px; right: 16px; bottom: 16px;
  z-index: 90;
  display: none;
  align-items: center;
  justify-content: center;
  background: var(--accent);
  color: #fff;
  font-weight: 700;
  font-size: 16px;
  padding: 16px;
  border-radius: 14px;
  box-shadow: 0 8px 30px rgba(255,107,43,0.4);
  transition: opacity .3s ease, transform .3s ease;
  opacity: 0;
  transform: translateY(20px);
  pointer-events: none;
}
.sticky-cta.is-visible { opacity: 1; transform: translateY(0); pointer-events: auto; }

/* ─────────────── REVEAL ANIMATION ─────────────── */
.reveal { opacity: 0; transform: translateY(24px); transition: opacity .6s ease, transform .6s ease; }
.reveal.is-in { opacity: 1; transform: translateY(0); }
@media (prefers-reduced-motion: reduce) {
  .reveal { opacity: 1; transform: none; transition: none; }
  .badge__dot { animation: none; }
}

/* ══════════════════════════════════════════════════════════════
   RESPONSIVE
   ══════════════════════════════════════════════════════════════ */

/* Tablet+ */
@media (min-width: 720px) {
  .cards--2 { grid-template-columns: 1fr 1fr; }
  .cards--3 { grid-template-columns: 1fr 1fr; }
  .price { grid-template-columns: 0.9fr 1.1fr; align-items: center; }
  .price__main { border-right: 1px solid var(--border); padding-right: 28px; }
}

/* Desktop hero */
@media (min-width: 960px) {
  .hero { padding: 84px 0 96px; }
  .hero__inner { grid-template-columns: 1.15fr 0.85fr; align-items: center; gap: 56px; }
  .hero__actions { flex-direction: row; align-items: center; }
  .cards--3 { grid-template-columns: repeat(3, 1fr); }
}

/* Mobile nav + sticky */
@media (max-width: 719px) {
  .nav {
    position: fixed;
    top: 64px; left: 0; right: 0;
    flex-direction: column;
    gap: 0;
    background: var(--bg-alt);
    border-bottom: 1px solid var(--border);
    box-shadow: 0 12px 30px rgba(0,0,0,0.4);
    padding: 8px 0;
    transform: translateY(-10px);
    opacity: 0;
    visibility: hidden;
    transition: transform .28s ease, opacity .28s ease, visibility .28s ease;
  }
  .nav.is-open { transform: translateY(0); opacity: 1; visibility: visible; }
  .nav__link { padding: 14px 20px; }
  .header .cta { display: none; }
  .burger { display: flex; }
  .sticky-cta { display: flex; }
}