/* ==========================================================
   OneToolBox — AI Background Remover
   Balanced full-page layout
========================================================== */

.tool-hero{padding:26px 0 20px;text-align:center}
.tool-hero h1{margin:0 0 7px;font-size:clamp(28px,3vw,38px);line-height:1.2;font-weight:800;color:#0f172a}
.tool-hero h1 i{margin-right:8px;color:#2563eb}
.tool-hero p{margin:0 auto;max-width:720px;color:#64748b;font-size:15px;line-height:1.6}

.tool-grid{display:grid;grid-template-columns:1fr 1fr 1fr;gap:16px;align-items:stretch}
.tool-card{min-width:0;background:#fff;border:1px solid #dbe3ec;border-radius:18px;padding:18px;box-shadow:0 8px 26px rgba(15,23,42,.06);display:flex;flex-direction:column}
.tool-card:hover{border-color:#bfdbfe;box-shadow:0 12px 30px rgba(37,99,235,.09)}
.tool-card h2{margin:0 0 13px;color:#0f172a;font-size:18px;line-height:1.3;font-weight:800;display:flex;align-items:center;gap:8px}
.tool-card h2 i{color:#2563eb}

.upload-area{cursor:pointer;min-height:285px;border:2px dashed #cbd5e1;border-radius:16px;background:#f8fbff;display:flex;flex-direction:column;align-items:center;justify-content:center;text-align:center;padding:18px;transition:.2s ease}
.upload-area:hover,.upload-area.dragover{border-color:#2563eb;background:#eff6ff}
.upload-icon{font-size:48px;color:#2563eb;margin-bottom:10px}
.upload-area h3{margin:0;color:#0f172a;font-size:18px}
.upload-area p{margin:7px 0 13px;color:#64748b;font-size:13px}
.upload-area small{margin-top:10px;color:#64748b;font-size:12px}

.primary-btn,.secondary-btn{border:0;border-radius:11px;min-height:46px;padding:10px 16px;font-size:14px;font-weight:800;cursor:pointer;display:inline-flex;align-items:center;justify-content:center;gap:8px;text-decoration:none;transition:.2s ease;box-sizing:border-box}
.primary-btn{background:#2563eb;color:#fff}
.primary-btn:hover{background:#1d4ed8;transform:translateY(-1px);box-shadow:0 7px 16px rgba(37,99,235,.18)}
.secondary-btn{background:#f1f5f9;color:#334155;border:1px solid #cbd5e1}
.secondary-btn:hover{background:#e2e8f0}
.primary-btn:disabled{opacity:.5;cursor:not-allowed;transform:none}
.full-btn{width:100%;margin-bottom:10px}

.file-info{display:grid;grid-template-columns:1fr 1fr;gap:9px;margin-top:11px}
.file-info>div,.result-info>div{padding:10px;border:1px solid #e5e7eb;border-radius:11px;background:#f8fafc;text-align:center}
.file-info span,.result-info span{display:block;color:#64748b;font-size:11px;margin-bottom:3px}
.file-info strong,.result-info strong{color:#0f172a;font-size:13px}

.processing-box{margin:3px 0 11px;padding:14px;border:1px solid #dbeafe;border-radius:13px;background:#f8fbff;text-align:center}
.processing-box p{margin:8px 0 7px;color:#334155;font-size:12px;font-weight:700}
.processing-box small{display:block;margin-top:6px;color:#64748b;font-size:10px}
.loader{width:34px;height:34px;margin:auto;border:4px solid #dbeafe;border-top-color:#2563eb;border-radius:50%;animation:bgspin .8s linear infinite}
@keyframes bgspin{to{transform:rotate(360deg)}}
.progress-wrapper{height:6px;overflow:hidden;border-radius:999px;background:#dbe3ef}
.progress-bar{width:0;height:100%;border-radius:999px;background:#2563eb;transition:width .2s}
#progressText{font-weight:700}

.tool-note{margin-top:auto;padding:14px;border:1px solid #e5e7eb;border-radius:13px;background:#f8fafc}
.tool-note h4{margin:0 0 7px;color:#0f172a;font-size:14px}
.tool-note ul{margin:0;padding-left:17px;color:#64748b;font-size:11px;line-height:1.6}
.tool-note li{margin-bottom:3px}

.background-controls{margin:3px 0 11px;padding:12px;border:1px solid #dbeafe;border-radius:13px;background:#f8fbff}
.background-title{display:flex;justify-content:space-between;align-items:center;gap:8px;margin-bottom:9px}
.background-title span{color:#0f172a;font-size:12px;font-weight:800}
.background-title span i{color:#2563eb;margin-right:5px}
.background-title small{color:#64748b;font-size:10px}
.background-options{display:grid;grid-template-columns:repeat(4,1fr);gap:6px}
.background-option{min-height:36px;padding:5px 4px;border:1px solid #cbd5e1;border-radius:8px;background:#fff;color:#475569;font-size:10px;font-weight:700;cursor:pointer;display:flex;align-items:center;justify-content:center;gap:4px;transition:.18s}
.background-option:hover{border-color:#93c5fd;background:#eff6ff}
.background-option.active{border-color:#2563eb;background:#eff6ff;color:#2563eb;box-shadow:0 0 0 2px rgba(37,99,235,.07)}
.background-swatch{width:12px;height:12px;border-radius:50%;border:1px solid #cbd5e1;background:var(--swatch);display:inline-block}
.background-option[data-background="transparent"] .background-swatch{background:linear-gradient(45deg,#e2e8f0 25%,#fff 25%,#fff 50%,#e2e8f0 50%,#e2e8f0 75%,#fff 75%);background-size:6px 6px}

.result-head{display:flex;justify-content:space-between;align-items:center;margin:-2px 0 10px}
.result-head span{font-size:12px;font-weight:800;color:#334155}
.result-head small{font-size:10px;color:#94a3b8}

.result-area{height:285px;min-height:285px;border:2px dashed #d1d5db;border-radius:16px;padding:10px;display:flex;align-items:center;justify-content:center;overflow:hidden;background-color:#f8fafc;background-image:linear-gradient(45deg,#e9eef3 25%,transparent 25%),linear-gradient(-45deg,#e9eef3 25%,transparent 25%),linear-gradient(45deg,transparent 75%,#e9eef3 75%),linear-gradient(-45deg,transparent 75%,#e9eef3 75%);background-size:20px 20px;background-position:0 0,0 10px,10px -10px,-10px 0}
.preview-image{max-width:100%;max-height:100%;width:auto;height:auto;object-fit:contain;border-radius:9px;display:none}
.placeholder{text-align:center;color:#94a3b8}
.placeholder i{font-size:46px;margin-bottom:8px;color:#cbd5e1}
.placeholder p{margin:0;font-size:12px}
.result-info{margin-top:10px}
#downloadBtn{margin-top:9px;background:#16a34a}
#downloadBtn:hover{background:#15803d}

.otb-tool-info{padding:38px 0}
.otb-tool-info-head{text-align:center;max-width:760px;margin:0 auto 20px}
.otb-tool-info-head h2{margin:0 0 6px;color:#0f172a;font-size:25px}
.otb-tool-info-head p{margin:0;color:#64748b;font-size:13px;line-height:1.6}
.otb-tool-info-grid{display:grid;grid-template-columns:repeat(3,1fr);gap:13px}
.otb-tool-info-card{padding:16px;background:#fff;border:1px solid #e5e7eb;border-radius:14px;box-shadow:0 5px 18px rgba(15,23,42,.04)}
.otb-tool-info-card h3{margin:0 0 6px;color:#0f172a;font-size:15px}
.otb-tool-info-card p,.otb-tool-info-card li{color:#64748b;font-size:12px;line-height:1.6}
.otb-tool-info-card ul{margin:0;padding-left:17px}
.otb-tool-faq .otb-tool-info-card{max-width:900px;margin:auto}
.otb-tool-faq details{border-bottom:1px solid #e5e7eb}
.otb-tool-faq details:last-child{border-bottom:0}
.otb-tool-faq summary{padding:14px 3px;cursor:pointer;color:#0f172a;font-size:13px;font-weight:750;list-style:none}
.otb-tool-faq summary::-webkit-details-marker{display:none}
.otb-tool-faq summary::after{content:"+";float:right;color:#2563eb;font-size:18px}
.otb-tool-faq details[open] summary::after{content:"−"}
.otb-tool-faq details p{margin:0;padding:0 3px 14px;color:#64748b;font-size:12px;line-height:1.6}

body.dark .tool-hero h1,body.dark .tool-card h2,body.dark .upload-area h3,body.dark .file-info strong,body.dark .result-info strong,body.dark .tool-note h4,body.dark .background-title span,body.dark .result-head span,body.dark .otb-tool-info-head h2,body.dark .otb-tool-info-card h3,body.dark .otb-tool-faq summary{color:#f8fafc}
body.dark .tool-hero p,body.dark .upload-area p,body.dark .upload-area small{color:#94a3b8}
body.dark .tool-card,body.dark .otb-tool-info-card{background:#111827;border-color:#334155}
body.dark .upload-area,body.dark .file-info>div,body.dark .result-info>div,body.dark .tool-note,body.dark .processing-box,body.dark .background-controls{background:#0f172a;border-color:#334155}
body.dark .background-option{background:#111827;color:#cbd5e1;border-color:#334155}
body.dark .result-area{background-color:#0f172a}
body.dark .otb-tool-info-card p,body.dark .otb-tool-info-card li,body.dark .otb-tool-info-head p,body.dark .otb-tool-faq details p{color:#94a3b8}

@media(max-width:1000px){
 .tool-grid{grid-template-columns:1fr 1fr}
 .tool-grid>.tool-card:last-child{grid-column:1/-1}
 .otb-tool-info-grid{grid-template-columns:1fr 1fr}
}
@media(max-width:700px){
 .tool-hero{padding:22px 0 17px}
 .tool-hero h1{font-size:28px}
 .tool-grid{grid-template-columns:1fr;gap:13px}
 .tool-grid>.tool-card:last-child{grid-column:auto}
 .tool-card{padding:15px}
 .upload-area,.result-area{min-height:255px;height:255px}
 .background-options{grid-template-columns:repeat(2,1fr)}
 .otb-tool-info{padding:30px 0}
 .otb-tool-info-grid{grid-template-columns:1fr}
}
@media(max-width:420px){
 .file-info{grid-template-columns:1fr 1fr}
}

/* Selected image preview stays in Upload card */
.upload-preview{
  display:none;
  width:100%;
  margin:0 0 12px;
  border:1px solid #dbe3ec;
  border-radius:14px;
  overflow:hidden;
  background:#fff;
  text-align:center;
}
.upload-preview.has-image{display:block}
.upload-preview img{
  display:block;
  width:100%;
  height:190px;
  object-fit:contain;
  background:#f1f5f9;
}
.upload-preview-meta{
  display:flex;
  align-items:center;
  justify-content:space-between;
  gap:8px;
  padding:8px 10px;
  background:#fff;
  text-align:left;
}
.upload-preview-meta strong{font-size:11px;color:#0f172a}
.upload-preview-meta span{font-size:10px;color:#64748b}

/* Result contains only the processed image */
.result-area .result-before-image{display:none!important}
.result-area #afterImg{
  display:none;
  width:100%;
  height:100%;
  max-width:100%;
  max-height:100%;
  object-fit:contain;
  object-position:center;
  border-radius:9px;
}

/* Give the preview maximum useful area */
.result-area{position:relative}
.result-area #resultPlaceholder{position:absolute;inset:0;display:flex;flex-direction:column;align-items:center;justify-content:center}

/* Quality hint */
.quality-note{
  margin-top:8px;
  font-size:10px;
  color:#64748b;
  line-height:1.45;
}

body.dark .upload-preview,
body.dark .upload-preview-meta{background:#111827;border-color:#334155}
body.dark .upload-preview-meta strong{color:#f8fafc}
body.dark .upload-preview-meta span{color:#94a3b8}
body.dark .upload-preview img{background:#0f172a}

@media(max-width:700px){
  .upload-preview img{height:170px}
}

/* ==========================================================
   OneToolBox AI Processing Modal
========================================================== */
body.ai-modal-open{overflow:hidden}

.ai-modal{
  position:fixed;
  inset:0;
  z-index:99999;
  display:flex;
  align-items:center;
  justify-content:center;
  padding:20px;
  opacity:0;
  visibility:hidden;
  pointer-events:none;
  transition:opacity .22s ease,visibility .22s ease;
}
.ai-modal.show{
  opacity:1;
  visibility:visible;
  pointer-events:auto;
}
.ai-modal-backdrop{
  position:absolute;
  inset:0;
  background:rgba(15,23,42,.58);
  backdrop-filter:blur(5px);
}
.ai-modal-card{
  position:relative;
  z-index:1;
  width:min(420px,100%);
  padding:28px 25px 23px;
  border:1px solid rgba(255,255,255,.7);
  border-radius:22px;
  background:rgba(255,255,255,.98);
  box-shadow:0 25px 70px rgba(15,23,42,.28);
  text-align:center;
  transform:translateY(12px) scale(.97);
  transition:transform .22s ease;
}
.ai-modal.show .ai-modal-card{transform:translateY(0) scale(1)}

.ai-modal-icon-wrap{
  position:relative;
  width:76px;
  height:76px;
  margin:0 auto 17px;
  display:flex;
  align-items:center;
  justify-content:center;
}
.ai-modal-spinner{
  position:absolute;
  inset:0;
  border:4px solid #dbeafe;
  border-top-color:#2563eb;
  border-right-color:#60a5fa;
  border-radius:50%;
  animation:aiModalSpin .85s linear infinite;
}
.ai-modal-icon{
  color:#2563eb;
  font-size:27px;
}
@keyframes aiModalSpin{to{transform:rotate(360deg)}}

.ai-modal-card h3{
  margin:0 0 7px;
  color:#0f172a;
  font-size:21px;
  font-weight:800;
}
.ai-modal-card>p{
  margin:0 auto 19px;
  max-width:330px;
  color:#64748b;
  font-size:13px;
  line-height:1.55;
}
.ai-modal-progress{
  width:100%;
  height:8px;
  overflow:hidden;
  border-radius:999px;
  background:#e5e7eb;
}
.ai-modal-progress>div{
  width:0;
  height:100%;
  border-radius:inherit;
  background:linear-gradient(90deg,#2563eb,#60a5fa);
  transition:width .25s ease;
}
.ai-modal-progress-row{
  display:flex;
  align-items:center;
  justify-content:space-between;
  gap:12px;
  margin-top:8px;
  color:#64748b;
  font-size:11px;
}
.ai-modal-progress-row strong{color:#2563eb}

.ai-modal-done,.ai-modal-error{
  display:none;
  margin:15px 0 0;
  padding:10px 12px;
  border-radius:11px;
  font-size:12px;
  line-height:1.45;
}
.ai-modal-done.show{
  display:block;
  color:#15803d;
  background:#f0fdf4;
  border:1px solid #bbf7d0;
}
.ai-modal-done i{margin-right:5px}
.ai-modal-error.show{
  display:block;
  color:#b91c1c;
  background:#fef2f2;
  border:1px solid #fecaca;
}
.ai-modal-error i{margin-right:5px}

.ai-modal-close{
  margin-top:16px;
  min-width:105px;
  min-height:40px;
  padding:9px 17px;
  border:1px solid #cbd5e1;
  border-radius:10px;
  background:#f8fafc;
  color:#334155;
  font-size:13px;
  font-weight:800;
  cursor:pointer;
}
.ai-modal-close:hover{background:#e2e8f0}
.ai-modal-close[data-processing="true"]{
  opacity:.45;
  cursor:not-allowed;
}

body.dark .ai-modal-card{
  background:#111827;
  border-color:#334155;
}
body.dark .ai-modal-card h3{color:#f8fafc}
body.dark .ai-modal-card>p,
body.dark .ai-modal-progress-row{color:#94a3b8}
body.dark .ai-modal-progress{background:#334155}
body.dark .ai-modal-close{
  background:#1e293b;
  border-color:#475569;
  color:#e2e8f0;
}

@media(max-width:480px){
  .ai-modal-card{padding:24px 18px 20px;border-radius:18px}
  .ai-modal-icon-wrap{width:68px;height:68px}
  .ai-modal-card h3{font-size:19px}
}