:root{
  --bg-light:#f8fafc;
  --accent:#3b82f6;
  --text-dark:#0f172a;
  --muted:#64748b;
}

*{ box-sizing:border-box; }
html,body{ margin:0; padding:0; overflow-x:hidden; }
body{
  font-family:'Inter',system-ui,sans-serif;
  background:var(--bg-light);
  color:var(--text-dark);
  line-height:1.6;
}

.container{ max-width:1100px; margin:0 auto; padding:0 20px; }

.header{ padding:20px 0; border-bottom:1px solid #e5e7eb; background:#fff; }
.header__inner{ display:flex; justify-content:space-between; align-items:center; }
.logo{ font-weight:700; font-size:1.5rem; }

.section{ padding:70px 0; }
.section-light{ background:#fff; }

h1,h2{ line-height:1.2; margin:0 0 14px; }
h3{ margin:0 0 10px; }
.subtitle{ font-size:1.1rem; margin:20px 0; color:var(--muted); }
.hero-or{ font-size:1rem; color:var(--muted); margin:0; align-self:center; }

.btn{
  padding:12px 24px;
  border-radius:10px;
  border:none;
  cursor:pointer;
  font-weight:600;
  text-decoration:none;
  display:inline-block;
  transition:transform .15s ease,background.2s ease, box-shadow .2s ease;
}
.btn-primary{ background:var(--accent); color:#fff; }
.btn-primary:hover{ background:#2563eb; transform:translateY(-1px); }
.btn-secondary{ background:#e5e7eb; color:#374151; }
.btn-secondary:hover{ background:#d1d5db; }
.full-width{ width:100%; max-width:420px; margin:20px auto 0; display:block; }

.hero{ padding:80px 0; }
.grid-2{ display:grid; grid-template-columns: 1fr 380px; gap:24px; align-items:start; }
.hero-card{
  padding:30px;
  border-radius:16px;
  box-shadow:0 10px 40px rgba(0,0,0,.08);
  background:#fff;
  border:1px solid rgba(15,23,42,0.06);
}

/* steps */
.steps{ display:grid; grid-template-columns: repeat(3,1fr); gap:24px; }
.step{
  background:#fff;
  padding:24px;
  border-radius:16px;
  box-shadow:0 5px 20px rgba(0,0,0,.05);
  text-align:center;
}
.step-number{
  display:inline-flex;
  width:40px; height:40px;
  background:var(--accent);
  color:#fff;
  border-radius:50%;
  align-items:center; justify-content:center;
  font-weight:700;
  margin-bottom:12px;
}
.step-image{
  margin-top:16px;
  width:100%;
  height:160px;
  object-fit:cover;
  border-radius:12px;
}

.zoom-wrapper{ overflow:hidden; border-radius:12px; cursor:pointer; }
.zoomable{ transition:transform .4s ease; }
.zoom-wrapper:hover .zoomable{ transform:scale(1.06); }

/* demo */
.demo-box{ margin-top:18px; }
.demo-instructions{ color:var(--muted); margin-bottom:14px; }
.demo-status{ margin-top:10px; color:var(--muted); font-size:14px; min-height:18px; }

.choice-grid{
  display:grid;
  grid-template-columns: repeat(3, minmax(0,1fr));
  gap:18px;
}
@media (max-width: 980px){
  .choice-grid{ grid-template-columns: repeat(2, minmax(0,1fr)); }
}
@media (max-width: 600px){
  .choice-grid{ grid-template-columns: 1fr; }
}

.choice-item{
  display:flex;
  flex-direction:column;
  gap:12px;
  padding:14px;
  border:1px solid #e5e7eb;
  border-radius:18px;
  background:#fff;
  min-width:0;
}

.choice-img-wrap{
  width:100%;
  border-radius:16px;
  overflow:hidden;
  background:#f3f4f6;
}
#roomSelector .choice-img-wrap{
  height: auto;
  aspect-ratio: 16 / 9;
}
#sofaSelector .choice-img-wrap{ height:210px; }

.choice-img{
  width:100%;
  height:100%;
  display:block;
  object-fit:cover;
  cursor:zoom-in;
}
#sofaSelector .choice-img{ object-fit:contain; object-position:center bottom; }

.select-btn{
  padding:10px 16px;
  border-radius:10px;
  border:2px solid var(--accent);
  background:#fff;
  color:var(--accent);
  font-weight:600;
  cursor:pointer;
}
.select-btn.is-active{
  background:#2563eb;
  color:#fff;
  border-color:#2563eb;
}
.choice-item .select-btn{ align-self:flex-start; }

.product-link{ color:var(--accent); text-decoration:none; }
.product-link:hover{ text-decoration:underline; }

.choice-item--upload{ grid-column: 1 / -1; }
.choice-item--upload .upload-actions{
  display:flex; gap:10px; flex-wrap:wrap; align-items:center;
}
.choice-item .hint{ font-size:13px; color:#6b7280; line-height:1.3; }

/* loading */
.hidden{ display:none !important; }
.loading-box{
  display:flex;
  align-items:center;
  gap:14px;
  margin-top:14px;
  padding:14px 16px;
  border:1px solid #e5e7eb;
  border-radius:14px;
  background:#fff;
}
.spinner{
  width:26px; height:26px;
  border:3px solid rgba(37,99,235,.25);
  border-top-color: rgba(37,99,235,1);
  border-radius:50%;
  animation: spin .9s linear infinite;
}
@keyframes spin{ to{ transform:rotate(360deg);} }

/* ai output */
.ai-output{ margin-top:22px; background:#fff; border-radius:18px; padding:18px;
  box-shadow:0 18px 55px rgba(0,0,0,.08); border:1px solid rgba(15,23,42,0.08);
}
.ai-output__header{ display:flex; align-items:flex-start; justify-content:space-between; gap:14px; margin-bottom:14px; }
.ai-badge{ display:inline-flex; align-items:center; padding:8px 10px; border-radius:999px;
  font-size:12px; font-weight:600; color:#1d4ed8; background:rgba(59,130,246,.12); border:1px solid rgba(59,130,246,.22);
  white-space:nowrap;
}
.product-info{
  display:flex; align-items:center; justify-content:space-between; gap:12px;
  padding:12px 14px; border:1px solid #e5e7eb; border-radius:14px; background:#fff; margin:12px 0 14px;
}
.product-info__title{ font-weight:700; color:#111827; }
.product-info__meta{ color:#6b7280; font-size:14px; margin-top:2px; }

.ai-output__grid{ display:grid; grid-template-columns: 1fr; gap:14px; margin-top:10px; }
.ai-output__img{ width:100%; height:320px; border-radius:14px; object-fit:cover; cursor:pointer; background:#f3f4f6; }
#betaCanvas.ai-output__img{ height:auto; display:block; }

.ai-output__actions{ display:flex; gap:12px; margin-top:16px; flex-wrap:wrap; }

/* benefits/contact/footer */
.benefits{ display:grid; grid-template-columns: repeat(3,1fr); gap:12px; margin-top:14px; }
@media (max-width: 768px){
  .grid-2{ grid-template-columns:1fr; }
  .steps{ grid-template-columns:1fr; }
  .benefits{ grid-template-columns:1fr; }
  .ai-output__img{ height:260px; }
  .ai-output__actions .btn{ width:100%; }
}
.contact-form{ display:grid; gap:15px; max-width:500px; margin:0 auto; }
.contact-form input{
  padding:14px; border-radius:10px; border:1px solid #cbd5f5;
  font-family:'Inter',system-ui,sans-serif; font-size:16px;
}
.footer{ text-align:center; padding:30px; font-size:.9rem; color:var(--muted); border-top:1px solid #e5e7eb; background:#fff; }

/* modal */
.modal{ position:fixed; inset:0; background:rgba(0,0,0,.6); z-index:1000; padding:12px; display:block; }
.modal.hidden{ display:none; }
.modal-content{
  background:#fff; border-radius:16px; padding:14px;
  position:fixed; top:50%; left:50%; transform:translate(-50%,-50%);
  width:min(calc(100vw - 24px), 780px); max-height:90vh;
  overflow:auto; box-shadow:0 30px 80px rgba(0,0,0,.25);
}
.modal-content img{ display:block; width:100%; height:auto; max-height:calc(90vh - 80px); object-fit:contain; border-radius:12px; }
.modal-close{ position:absolute; top:10px; right:14px; font-size:28px; cursor:pointer; color:#334155; }
/* RESULT: показываем целиком, без обрезки */
#aiResultImg.ai-output__img{
  height: auto;
  max-height: 60vh;      /* чтобы не занимало весь экран на ПК */
  object-fit: contain;   /* ключевое: не режем изображение */
}

/* фон, чтобы по бокам при contain не было "пустоты" белой */
#aiResultImg.ai-output__img{
  background:#f3f4f6;
}