/* ============================================================
   AI Weekends — лендинг. Тёмная супрематическая стилистика.
   ============================================================ */

:root{
  --bg:        #0b0e14;
  --bg-alt:    #0e121b;
  --surface:   #12151d;
  --card:      #161a24;
  --border:    rgba(255,255,255,.08);
  --border-2:  rgba(255,255,255,.14);
  --text:      #e8eaf0;
  --muted:     #99a2b3;
  --accent:    #ff5a36;
  --accent-2:  #ff714f;
  --lav:       #c9b8ff;
  --radius:    18px;
  --radius-sm: 12px;
  --maxw:      1180px;
  --ease:      cubic-bezier(.2,.7,.3,1);
}

*{box-sizing:border-box;margin:0;padding:0}
html{scroll-behavior:smooth}
body{
  font-family:'Manrope',-apple-system,BlinkMacSystemFont,'Segoe UI',Roboto,Arial,sans-serif;
  background:var(--bg);
  color:var(--text);
  line-height:1.55;
  -webkit-font-smoothing:antialiased;
  overflow-x:hidden;
}
a{color:inherit;text-decoration:none}
img,svg{display:block}
.muted{color:var(--muted)}
.grad{
  background:linear-gradient(92deg,#ffffff 0%,var(--lav) 70%);
  -webkit-background-clip:text;background-clip:text;
  -webkit-text-fill-color:transparent;color:transparent;
}
.container{width:100%;max-width:var(--maxw);margin:0 auto;padding:0 24px}

/* ---------- Buttons ---------- */
.btn{
  display:inline-flex;align-items:center;justify-content:center;
  gap:.5em;
  padding:14px 26px;border-radius:999px;
  font-weight:700;font-size:15px;line-height:1;
  cursor:pointer;border:1px solid transparent;
  transition:transform .15s var(--ease),background .2s,border-color .2s,opacity .2s;
  white-space:nowrap;
}
.btn:hover{transform:translateY(-2px)}
.btn--primary{background:var(--accent);color:#fff;box-shadow:0 8px 26px rgba(255,90,54,.28)}
.btn--primary:hover{background:var(--accent-2)}
.btn--ghost{background:transparent;color:var(--text);border-color:var(--border-2)}
.btn--ghost:hover{border-color:var(--text);background:rgba(255,255,255,.04)}

/* ---------- Header ---------- */
.site-header{
  position:sticky;top:0;z-index:50;
  background:rgba(11,14,20,.72);
  backdrop-filter:blur(14px);
  border-bottom:1px solid var(--border);
}
.header__inner{display:flex;align-items:center;gap:24px;height:72px}
.brand{display:inline-flex;align-items:center;gap:10px;font-weight:800;font-size:18px}
.brand__mark{display:inline-flex}
.nav{display:flex;gap:26px;margin-left:auto;font-size:15px;font-weight:500}
.nav a{color:var(--muted);transition:color .2s}
.nav a:hover{color:var(--text)}
.header__cta{margin-left:8px;padding:11px 22px}

/* ---------- Hero ---------- */
.hero{position:relative;overflow:hidden;border-bottom:1px solid var(--border)}
.hero__bg{
  position:absolute;inset:0;left:42%;
  pointer-events:none;
  -webkit-mask-image:linear-gradient(90deg,transparent 0%,#000 38%);
  mask-image:linear-gradient(90deg,transparent 0%,#000 38%);
  opacity:.9;
}
.hero__bg svg{width:100%;height:100%}
.hero__inner{position:relative;z-index:2;padding:96px 24px 104px;max-width:760px}
.hero__title{
  font-size:clamp(54px,9vw,108px);
  font-weight:800;line-height:.98;letter-spacing:-.02em;
  margin:22px 0 24px;
}
.hero__lead{font-size:clamp(17px,2.2vw,21px);color:#cdd3df;max-width:560px;margin-bottom:30px}
.hero__facts{
  list-style:none;display:flex;flex-wrap:wrap;gap:14px 26px;
  font-size:16px;font-weight:600;margin-bottom:34px;
}
.hero__facts li{display:flex;align-items:center;gap:8px}
.hero__facts .ic{opacity:.9}
.hero__cta{display:flex;flex-wrap:wrap;gap:14px}

/* pill */
.pill{
  display:inline-flex;align-items:center;gap:9px;
  padding:8px 16px;border:1px solid var(--border-2);border-radius:999px;
  font-size:13.5px;font-weight:600;color:#cdd3df;background:rgba(255,255,255,.03)
}
.pill .dot{width:8px;height:8px;border-radius:50%;background:var(--accent);box-shadow:0 0 0 4px rgba(255,90,54,.18)}

/* ---------- Sections ---------- */
.section{padding:92px 0}
.section--alt{background:var(--bg-alt)}
.eyebrow{
  display:inline-block;font-size:13px;font-weight:700;letter-spacing:.14em;
  text-transform:uppercase;color:var(--accent);margin-bottom:16px
}
.section__title{font-size:clamp(32px,5vw,52px);font-weight:800;letter-spacing:-.02em;line-height:1.05;margin-bottom:20px}
.section__lead{font-size:18px;color:var(--muted);max-width:680px;margin-bottom:46px}

/* ---------- Features ---------- */
.features{display:grid;grid-template-columns:repeat(4,1fr);gap:18px}
.feature{
  background:var(--card);border:1px solid var(--border);border-radius:var(--radius);
  padding:26px 24px;transition:border-color .2s,transform .2s var(--ease)
}
.feature:hover{border-color:var(--border-2);transform:translateY(-3px)}
.feature__ic{font-size:26px;display:block;margin-bottom:14px}
.feature h3{font-size:18px;margin-bottom:8px}

/* ---------- Workshop cards ---------- */
.cards{display:grid;grid-template-columns:repeat(2,1fr);gap:20px}
.card{
  position:relative;display:flex;flex-direction:column;
  background:var(--card);border:1px solid var(--border);border-radius:var(--radius);
  padding:30px 28px;transition:border-color .2s,transform .2s var(--ease)
}
.card:hover{border-color:var(--border-2);transform:translateY(-3px)}
.card--soon{border-style:dashed;background:rgba(255,255,255,.02)}
.tag{
  align-self:flex-start;font-size:12.5px;font-weight:700;letter-spacing:.04em;
  padding:6px 12px;border-radius:999px;margin-bottom:16px;border:1px solid transparent
}
.tag--eng{color:#ff8a6e;background:rgba(255,90,54,.12);border-color:rgba(255,90,54,.3)}
.tag--prod{color:#d8caff;background:rgba(201,184,255,.12);border-color:rgba(201,184,255,.3)}
.tag--mng{color:#f7d96b;background:rgba(244,197,49,.12);border-color:rgba(244,197,49,.3)}
.tag--soon{color:var(--muted);background:rgba(255,255,255,.05);border-color:var(--border-2)}
.card__title{font-size:22px;line-height:1.2;margin-bottom:14px}
.card__desc{color:var(--muted);font-size:15.5px;margin-bottom:24px;flex:1}
.card__author{display:flex;align-items:center;gap:13px;margin-bottom:24px}
.card__author-text{font-size:14.5px;line-height:1.35}
.avatar{
  width:46px;height:46px;border-radius:50%;flex:0 0 auto;
  display:flex;align-items:center;justify-content:center;
  font-weight:800;font-size:15px;color:#0b0e14;
  background:var(--a,#ff5a36);
}
.avatar--soon{background:transparent;color:var(--muted);border:1px dashed var(--border-2)}
img.avatar{object-fit:cover}
.avatar--photo{padding:0;background:#0b0e14}
.card__btn{align-self:flex-start}

/* ---------- Format / days ---------- */
.days{display:grid;grid-template-columns:repeat(2,1fr);gap:20px;margin-bottom:24px}
.day{background:var(--card);border:1px solid var(--border);border-radius:var(--radius);padding:30px 28px}
.day__num{
  display:inline-block;font-size:13px;font-weight:700;letter-spacing:.08em;
  color:var(--accent);margin-bottom:14px;text-transform:uppercase
}
.day h3{font-size:21px;margin-bottom:10px}
.format__note{font-size:15px}

/* ---------- Included / not ---------- */
.incl{display:grid;grid-template-columns:1fr 1fr;gap:20px}
.incl__col{background:var(--card);border:1px solid var(--border);border-radius:var(--radius);padding:30px 30px}
.incl__col h3{font-size:20px;margin-bottom:18px}
.incl__col--yes{border-top:3px solid var(--accent)}
.incl__col--no{border-top:3px solid var(--border-2)}
.incl__hint{margin-top:16px;font-size:14px}
.checklist,.crosslist{list-style:none;display:grid;gap:12px}
.checklist li,.crosslist li{position:relative;padding-left:30px;font-size:15.5px}
.checklist li::before{
  content:"";position:absolute;left:0;top:3px;width:18px;height:18px;border-radius:50%;
  background:var(--accent);
}
.checklist li::after{
  content:"";position:absolute;left:6px;top:7px;width:5px;height:9px;
  border:solid #fff;border-width:0 2px 2px 0;transform:rotate(45deg)
}
.crosslist li::before{
  content:"×";position:absolute;left:2px;top:0;color:var(--muted);font-size:20px;line-height:1
}

/* ---------- Tickets ---------- */
.tickets{display:grid;grid-template-columns:repeat(2,1fr);gap:22px;max-width:880px}
.ticket{
  position:relative;background:var(--card);border:1px solid var(--border);
  border-radius:var(--radius);padding:34px 32px
}
.ticket--popular{border-color:var(--accent);box-shadow:0 0 0 1px var(--accent) inset,0 18px 50px rgba(255,90,54,.12)}
.ticket__badge{
  position:absolute;top:-13px;left:32px;
  background:var(--accent);color:#fff;font-size:12.5px;font-weight:700;
  padding:6px 14px;border-radius:999px
}
.ticket__name{font-size:22px;margin-bottom:2px}
.ticket__sub{font-size:14px;margin-bottom:18px}
.ticket__price{font-size:42px;font-weight:800;letter-spacing:-.02em;margin-bottom:6px}
.ticket__note{font-size:14px;margin-bottom:22px}
.ticket .checklist{margin-bottom:28px}
.ticket__btn{width:100%}
.tickets__help{margin-top:22px;font-size:15px}
.tickets__help a{color:var(--lav)}

/* ---------- FAQ ---------- */
.faq{display:grid;gap:12px;max-width:820px}
.qa{
  background:var(--card);border:1px solid var(--border);border-radius:var(--radius-sm);
  padding:4px 22px;transition:border-color .2s
}
.qa[open]{border-color:var(--border-2)}
.qa summary{
  list-style:none;cursor:pointer;font-weight:600;font-size:17px;
  padding:18px 0;display:flex;justify-content:space-between;align-items:center;gap:16px
}
.qa summary::-webkit-details-marker{display:none}
.qa summary::after{
  content:"+";font-size:24px;font-weight:400;color:var(--accent);
  transition:transform .2s;line-height:1
}
.qa[open] summary::after{transform:rotate(45deg)}
.qa p{padding:0 0 20px;font-size:15.5px;max-width:680px}

/* ---------- Footer ---------- */
.site-footer{background:var(--bg-alt);border-top:1px solid var(--border);padding:64px 0 30px}
.footer__inner{display:grid;grid-template-columns:2fr 1fr 1fr;gap:40px;margin-bottom:40px}
.footer__brand .brand__text{font-size:20px;font-weight:800;display:inline-block;margin-bottom:14px}
.footer__brand p{max-width:380px;margin-bottom:8px;font-size:15px}
.footer__title{font-size:13px;text-transform:uppercase;letter-spacing:.1em;color:var(--muted);margin-bottom:16px}
.footer__col p{margin-bottom:10px;font-size:15px}
.footer__col a:hover{color:var(--lav)}
.footer__bottom{display:flex;justify-content:space-between;align-items:center;gap:16px;
  padding-top:24px;border-top:1px solid var(--border);font-size:14px}
.footer__bottom a:hover{color:var(--text)}

/* ---------- Responsive ---------- */
@media (max-width:980px){
  .features{grid-template-columns:repeat(2,1fr)}
  .hero__bg{left:30%;opacity:.5}
}
@media (max-width:820px){
  .nav{display:none}
  .cards,.days,.incl,.tickets{grid-template-columns:1fr}
  .tickets{max-width:520px}
  .footer__inner{grid-template-columns:1fr 1fr}
  .footer__brand{grid-column:1 / -1}
  .section{padding:68px 0}
  .hero__inner{padding:72px 24px 80px}
}
@media (max-width:560px){
  .features{grid-template-columns:1fr}
  .footer__inner{grid-template-columns:1fr}
  .footer__bottom{flex-direction:column;align-items:flex-start}
  .header__cta{display:none}
}

/* ---------- Card actions (две кнопки) ---------- */
.card__actions{display:flex;gap:10px;flex-wrap:wrap;margin-top:auto}
.card__actions .btn{flex:1 1 auto;min-width:128px;padding:13px 18px}

/* ---------- Modals ---------- */
body.modal-lock{overflow:hidden}
.modal{
  position:fixed;inset:0;z-index:100;display:none;
  align-items:flex-start;justify-content:center;
  padding:5vh 20px;background:rgba(5,7,11,.74);
  -webkit-backdrop-filter:blur(6px);backdrop-filter:blur(6px);overflow-y:auto;
}
.modal.is-open{display:flex}
.modal__dialog{
  position:relative;background:var(--card);border:1px solid var(--border-2);
  border-radius:var(--radius);max-width:640px;width:100%;padding:38px 40px;margin:auto;
  animation:modalin .22s var(--ease);
}
.modal__dialog--wide{max-width:860px}
@keyframes modalin{from{opacity:0;transform:translateY(12px)}to{opacity:1;transform:none}}
.modal__close{
  position:absolute;top:16px;right:16px;width:38px;height:38px;border-radius:50%;
  border:1px solid var(--border-2);background:transparent;color:var(--text);
  font-size:22px;line-height:1;cursor:pointer;display:flex;align-items:center;justify-content:center;
  transition:background .2s;
}
.modal__close:hover{background:rgba(255,255,255,.07)}
.modal .tag{align-self:flex-start;margin-bottom:0}
.modal__title{font-size:27px;line-height:1.15;margin:14px 0 6px}
.modal__author{color:var(--muted);font-size:15px;margin-bottom:18px}
.modal h4{font-size:13px;text-transform:uppercase;letter-spacing:.08em;color:var(--accent);margin:22px 0 12px}
.modal .checklist{gap:10px}
.modal__days{display:grid;gap:12px}
.modal__days div{font-size:15px;line-height:1.5}
.modal__buy{margin-top:28px;width:100%}

/* choose-workshop modal */
.choose-grid{display:grid;grid-template-columns:1fr 1fr;gap:16px;margin-top:26px}
.choose-card{
  background:var(--bg-alt);border:1px solid var(--border);border-radius:var(--radius-sm);
  padding:22px;display:flex;flex-direction:column;gap:10px;
}
.choose-card h4{font-size:17px;color:var(--text);text-transform:none;letter-spacing:0;margin:0;line-height:1.25}
.choose-card .muted{font-size:14px;flex:1}
.choose-card .tag{align-self:flex-start;margin:0}
.choose-card .btn{align-self:flex-start;margin-top:4px}
.choose-card--soon{opacity:.6}

@media (max-width:640px){
  .choose-grid{grid-template-columns:1fr}
  .modal__dialog{padding:30px 22px}
  .modal__title{font-size:23px}
}