/* =========================================================
   OtvetInfo — решение задач с ИИ (страница, меню, промо)
   ========================================================= */

.sv-hero [hidden],.sv-result-wrap [hidden]{display:none!important}

/* пункт меню */
.nav a.nav-ai,.mobile-nav a.nav-ai{color:var(--accent-ink);font-weight:620}
.nav a.nav-ai::before,.mobile-nav a.nav-ai span::before{
  content:"";display:inline-block;width:7px;height:7px;border-radius:50%;background:var(--accent);
  margin-right:7px;vertical-align:1px;box-shadow:0 0 0 3px var(--accent-soft);
}
.mobile-nav a.nav-ai{background:var(--accent-soft)}

/* промо в сайдбаре и в статьях */
.sv-promo{
  background:var(--surface);border:1px solid color-mix(in srgb,var(--accent) 38%,var(--border));
  border-radius:var(--radius);padding:18px 20px;position:relative;overflow:hidden;
}
.sv-promo::after{
  content:"";position:absolute;right:-40px;top:-40px;width:130px;height:130px;border-radius:50%;
  background:var(--accent-soft);z-index:0;
}
.sv-promo>*{position:relative;z-index:1}
.sv-promo-kicker{font-size:11.5px;font-weight:660;letter-spacing:.08em;text-transform:uppercase;color:var(--accent-ink);margin:0 0 6px}
.sv-promo strong{display:block;font-size:17px;letter-spacing:-.018em;line-height:1.3;margin-bottom:6px}
.sv-promo p{font-size:14px;color:var(--muted);margin:0 0 14px;line-height:1.5}
.sv-promo .btn{width:100%}

/* ------------------------------ герой ------------------------------ */
.sv-hero{padding:26px 0 44px;border-bottom:1px solid var(--border);
  background:radial-gradient(900px 360px at 75% -80px,var(--accent-soft),transparent 70%)}
.sv-hero-in{display:grid;grid-template-columns:minmax(0,.9fr) minmax(0,1.1fr);gap:44px;align-items:start}
.sv-intro{padding-top:18px}
.sv-title{font-size:clamp(30px,4.2vw,46px);letter-spacing:-.033em;margin:0 0 16px;font-weight:700}
.sv-lead{font-size:18px;color:var(--muted);margin:0 0 22px;max-width:52ch}
.sv-points{list-style:none;padding:0;margin:0;display:flex;flex-direction:column;gap:10px}
.sv-points li{position:relative;padding-left:30px;font-weight:540}
.sv-points li::before{
  content:"";position:absolute;left:0;top:3px;width:20px;height:20px;border-radius:6px;background:var(--accent-soft);
  background-image:url("data:image/svg+xml,%3Csvg xmlns='http://www.w3.org/2000/svg' viewBox='0 0 24 24' fill='none' stroke='%230f766e' stroke-width='3.2' stroke-linecap='round' stroke-linejoin='round'%3E%3Cpath d='M5 12.5l4.5 4.5L19 7.5'/%3E%3C/svg%3E");
  background-size:13px;background-repeat:no-repeat;background-position:center;
}

/* ------------------------------ форма ------------------------------ */
.sv-tool{
  background:var(--surface);border:1px solid var(--border);border-radius:18px;padding:22px;
  box-shadow:0 18px 50px -28px rgba(15,118,110,.45),var(--shadow);
}
.sv-row{display:grid;grid-template-columns:1fr 120px;gap:12px;margin-bottom:14px}
.sv-select{display:flex;flex-direction:column;gap:5px;font-size:12.5px;font-weight:600;color:var(--muted)}
.sv-select select,.sv-form textarea{
  width:100%;border:1px solid var(--border-strong);border-radius:11px;background:var(--bg);color:var(--text);
  font:inherit;font-size:15px;
}
.sv-select select{padding:10px 12px;appearance:auto}
.sv-label{display:block;font-size:12.5px;font-weight:600;color:var(--muted);margin-bottom:5px}
.sv-form textarea{padding:13px 14px;resize:vertical;min-height:132px;line-height:1.55}
.sv-select select:focus,.sv-form textarea:focus{outline:none;border-color:var(--accent);box-shadow:0 0 0 3px var(--accent-soft)}
.sv-form.is-busy{opacity:.55;pointer-events:none}

.sv-photo{position:relative;margin-top:12px;display:inline-block;max-width:100%}
.sv-photo img{display:block;max-height:220px;max-width:100%;border-radius:11px;border:1px solid var(--border)}
.sv-photo-x{
  position:absolute;top:8px;right:8px;width:30px;height:30px;border-radius:50%;border:0;cursor:pointer;
  background:rgba(0,0,0,.65);color:#fff;font-size:20px;line-height:1;display:grid;place-items:center;
}
.sv-actions{display:flex;gap:10px;margin-top:14px}
.sv-attach{cursor:pointer;flex-shrink:0}
.sv-submit{flex:1}
.sv-submit:disabled{opacity:.6;cursor:wait;transform:none}
.sv-meta{font-size:13px;color:var(--muted);margin:12px 0 0;display:flex;flex-wrap:wrap;gap:6px}
.sv-meta b{color:var(--accent-ink)}
.sv-dot{opacity:.5}
.sv-error{margin:12px 0 0;padding:11px 14px;border-radius:10px;background:var(--warn-soft);color:var(--warn);font-size:14.5px}

.sv-loading{display:flex;align-items:center;gap:14px;margin-top:16px;padding:14px 16px;border-radius:12px;background:var(--accent-soft)}
.sv-loading strong{display:block;font-size:15.5px;color:var(--accent-ink)}
.sv-loading span{font-size:13px;color:var(--muted)}
.sv-spinner{
  width:26px;height:26px;border-radius:50%;flex-shrink:0;border:3px solid color-mix(in srgb,var(--accent) 25%,transparent);
  border-top-color:var(--accent);animation:sv-spin .8s linear infinite;
}
@keyframes sv-spin{to{transform:rotate(360deg)}}

.sv-limit{text-align:center;padding:16px 6px 6px}
.sv-limit strong{display:block;font-size:20px;letter-spacing:-.02em;margin-bottom:8px}
.sv-limit p{color:var(--muted);margin:0 0 18px}
.sv-limit .btn{width:100%}

/* ------------------------------ ответ ------------------------------ */
.sv-result-wrap{padding-top:0}
.sv-result{
  margin:30px 0 0;background:var(--surface);border:1px solid var(--border);border-radius:18px;
  box-shadow:var(--shadow);overflow:hidden;scroll-margin-top:90px;
}
.sv-result-head{display:flex;justify-content:space-between;align-items:center;gap:12px;flex-wrap:wrap;
  padding:14px 20px;border-bottom:1px solid var(--border);background:var(--surface-2)}
.sv-badge{display:inline-flex;align-items:center;gap:7px;font-size:13.5px;font-weight:640;color:var(--accent-ink)}
.sv-badge::before{content:"";width:8px;height:8px;border-radius:50%;background:var(--accent)}
.sv-result-tools{display:flex;gap:8px}
.btn-sm{padding:7px 13px;font-size:13.5px;border-radius:9px}
.sv-answer{padding:8px 24px 6px;font-size:17px;line-height:1.7}
.sv-part{padding:16px 0;border-bottom:1px dashed var(--border)}
.sv-part:last-child{border-bottom:0}
.sv-part h3{font-size:12.5px;letter-spacing:.08em;text-transform:uppercase;color:var(--muted);margin:0 0 8px;font-weight:660}
.sv-part p{margin:0 0 .7em}
.sv-part p:last-child{margin-bottom:0}
.sv-part hr{border:0;border-top:1px solid var(--border);margin:12px 0}
.sv-answer sup{font-size:.7em;line-height:0}
.sv-p-task{color:var(--muted)}
.sv-part.sv-p-answer{
  margin:12px 0 14px;padding:14px 16px;border:0;border-radius:12px;background:var(--accent-soft);
}
.sv-part.sv-p-answer h3{color:var(--accent-ink)}
.sv-part.sv-p-answer p{font-weight:640;font-size:18px}
.sv-next{display:flex;align-items:center;justify-content:space-between;gap:16px;flex-wrap:wrap;
  margin:0 20px 20px;padding:16px 18px;border-radius:14px;
  background:linear-gradient(135deg,var(--accent-soft),color-mix(in srgb,var(--accent-soft) 45%,var(--surface)))}
.sv-next strong{display:block;font-size:16.5px;letter-spacing:-.015em;margin-bottom:3px}
.sv-next p{margin:0;font-size:14px;color:var(--muted);max-width:58ch}

/* ------------------------------ контент ------------------------------ */
.sv-layout{padding-top:48px}
.sv-steps{counter-reset:s;list-style:none;padding:0!important}
.sv-steps li{counter-increment:s;position:relative;padding-left:44px;margin-bottom:16px}
.sv-steps li::before{
  content:counter(s);position:absolute;left:0;top:1px;width:30px;height:30px;border-radius:9px;
  background:var(--accent);color:#fff;font-weight:700;font-size:15px;display:grid;place-items:center;
}
html[data-theme="dark"] .sv-steps li::before{color:#06100f}
.sv-subjects{display:grid;grid-template-columns:repeat(2,minmax(0,1fr));gap:12px;margin:0 0 1.4em}
.sv-subjects div{border:1px solid var(--border);border-radius:12px;padding:14px 16px;background:var(--surface)}
.sv-subjects strong{display:block;font-size:16px;margin-bottom:3px}
.sv-subjects span{font-size:14.5px;color:var(--muted);line-height:1.5;display:block}

@media (max-width:960px){
  .sv-hero-in{grid-template-columns:1fr;gap:24px}
  .sv-intro{padding-top:6px}
  .sv-points{flex-direction:row;flex-wrap:wrap;gap:8px 18px}
  .sv-points li{font-size:14.5px}
}
@media (max-width:620px){
  .sv-hero{padding:14px 0 30px}
  .sv-title{font-size:28px;margin-bottom:10px}
  .sv-lead{font-size:16px;margin-bottom:14px}
  .sv-points{display:none}
  .sv-tool{padding:16px;border-radius:16px;margin:0 -6px}
  .sv-row{grid-template-columns:1fr 92px}
  .sv-actions{flex-direction:column-reverse}
  .sv-attach{width:100%}
  .sv-answer{padding:4px 16px;font-size:16.5px}
  .sv-next{margin:0 12px 14px}
  .sv-next .btn{width:100%}
  .sv-subjects{grid-template-columns:1fr}
  .sv-result-head{padding:12px 16px}
}