/* resize-image-to-kb/style.css */
:root{
  --navy:#1e3a5f;--blue:#1a73e8;--blue-h:#1557b0;--blue-l:#e8f0fe;
  --green:#34a853;--bg:#f1f5ff;--card:#fff;--border:#dadce0;
  --text:#202124;--muted:#5f6368;--muted2:#9aa0a6;
  --font:'Nunito',sans-serif;--shadow:0 2px 12px rgba(0,0,0,.10);
  --r:14px;--rs:8px;
}
*,*::before,*::after{box-sizing:border-box;margin:0;padding:0}
html{font-size:16px;scroll-behavior:smooth}
body{font-family:var(--font);background:var(--bg);color:var(--text);min-height:100vh;display:flex;flex-direction:column}
img{max-width:100%;height:auto;display:block}
a{color:var(--blue);text-decoration:none}
a:hover{text-decoration:underline}

/* CONTAINER */
.container{max-width:860px;width:100%;margin:0 auto;padding:0 20px}

/* HEADER */
.site-header{background:var(--navy);padding:15px 0;box-shadow:0 2px 10px rgba(0,0,0,.25);position:sticky;top:0;z-index:100}
.header-inner{display:flex;align-items:center;gap:16px}
.logo{display:flex;align-items:center;gap:10px;text-decoration:none;flex-shrink:0}
.logo-box{width:36px;height:36px;background:#fff;border-radius:8px;display:grid;grid-template-columns:1fr 1fr;gap:4px;padding:6px}
.logo-box span{border-radius:2px}
.logo-box .b1,.logo-box .b2,.logo-box .b3{background:var(--blue)}
.logo-box .b4{background:var(--green)}
.logo-text{font-size:1.05rem;font-weight:800;color:#fff;white-space:nowrap}
.header-nav{display:flex;gap:4px;margin-left:auto}
.nav-link{color:rgba(255,255,255,.8);text-decoration:none;font-size:.88rem;font-weight:700;padding:7px 14px;border-radius:6px;transition:background .18s;white-space:nowrap}
.nav-link:hover{color:#fff;background:rgba(255,255,255,.12)}

/* HERO */
.hero{background:linear-gradient(160deg,#1e3a5f 0%,#1a4f8a 55%,#1e5ea8 100%);padding:44px 0 36px;text-align:center;border-bottom:4px solid #2563c8}
.hero-title{font-size:clamp(1.35rem,4vw,2.1rem);font-weight:800;color:#fff;margin-bottom:10px;letter-spacing:-.02em;line-height:1.25}
.hero-sub{font-size:1rem;color:rgba(255,255,255,.78);font-weight:600;padding:0 16px}

/* MAIN */
.main-content{flex:1;padding:32px 20px 56px;display:flex;flex-direction:column;gap:24px}

/* CARD */
.card{background:var(--card);border-radius:var(--r);box-shadow:var(--shadow);overflow:hidden}

/* UPLOAD ZONE */
.upload-zone{display:flex;flex-direction:column;align-items:center;padding:52px 24px 40px;text-align:center;border:2.5px dashed #c0cce8;border-radius:var(--r);cursor:pointer;transition:border-color .2s,background .2s;background:#fff}
.upload-zone:hover,.upload-zone.dragover{border-color:var(--blue);background:#eef3fd}
.upload-icon-wrap{width:72px;height:72px;background:var(--blue-l);border-radius:50%;display:flex;align-items:center;justify-content:center;margin-bottom:16px;color:var(--blue);transition:transform .2s}
.upload-zone:hover .upload-icon-wrap{transform:translateY(-4px)}
.upload-title{font-size:1.35rem;font-weight:800;color:var(--text);margin-bottom:6px}
.upload-sub{font-size:.9rem;color:var(--muted);margin-bottom:20px}
.upload-badges{display:flex;gap:8px;flex-wrap:wrap;justify-content:center;margin-top:18px}
.badge{display:inline-flex;align-items:center;gap:5px;font-size:.72rem;color:var(--muted);background:var(--bg);border:1px solid var(--border);padding:4px 10px;border-radius:20px;font-weight:700}

/* BUTTONS */
.btn{display:inline-flex;align-items:center;justify-content:center;gap:8px;border-radius:var(--rs);font-family:var(--font);font-weight:700;cursor:pointer;border:none;text-decoration:none;transition:all .18s;white-space:nowrap;font-size:.95rem}
.btn-primary{background:var(--blue);color:#fff;padding:12px 28px;box-shadow:0 2px 8px rgba(26,115,232,.3)}
.btn-primary:hover{background:var(--blue-h);transform:translateY(-1px)}
.btn-green{background:var(--green);color:#fff;padding:13px 48px;font-size:1.05rem;box-shadow:0 2px 10px rgba(52,168,83,.35);border:none;border-radius:var(--rs);font-family:var(--font);font-weight:700;cursor:pointer;transition:all .18s;display:inline-flex;align-items:center;justify-content:center;gap:8px}
.btn-green:hover:not(:disabled){background:#2a9647;transform:translateY(-1px)}
.btn-green:disabled{background:#9aa0a6;cursor:not-allowed;box-shadow:none}
.btn-outline{background:transparent;color:var(--blue);border:2px solid var(--blue);padding:10px 22px;font-size:.9rem;display:inline-flex;align-items:center;justify-content:center;gap:8px;font-family:var(--font);font-weight:700;border-radius:var(--rs);cursor:pointer;transition:all .18s;width:100%}
.btn-outline:hover{background:var(--blue-l)}
.btn-download{background:var(--green);color:#fff;width:100%;padding:12px 24px;font-size:.95rem;box-shadow:0 2px 8px rgba(52,168,83,.3);border-radius:var(--rs);display:inline-flex;align-items:center;justify-content:center;gap:8px;font-family:var(--font);font-weight:700;text-decoration:none;transition:all .18s}
.btn-download:hover{background:#2d9248;transform:translateY(-1px);text-decoration:none}
.btn-icon{display:inline-flex;align-items:center;gap:5px;background:#fff;border:1.5px solid var(--border);color:var(--muted);padding:7px 13px;border-radius:6px;font-family:var(--font);font-size:.8rem;font-weight:700;cursor:pointer;transition:all .18s;flex-shrink:0}
.btn-icon:hover{border-color:var(--blue);color:var(--blue)}

/* SETTINGS PANEL */
.settings-panel{padding:24px 28px;display:flex;flex-direction:column;gap:20px}

/* PREVIEW ROW */
.preview-row{display:flex;align-items:center;gap:12px;padding:12px 14px;background:var(--bg);border-radius:var(--rs);border:1px solid var(--border)}
.preview-thumb{width:60px;height:60px;border-radius:6px;overflow:hidden;background:#ddd;flex-shrink:0}
.preview-thumb img{width:100%;height:100%;object-fit:cover}
.preview-info{flex:1;min-width:0}
.preview-name{font-weight:800;font-size:.88rem;color:var(--text);white-space:nowrap;overflow:hidden;text-overflow:ellipsis}
.preview-meta{font-size:.78rem;color:var(--muted);margin-top:2px}

/* SETTINGS GRID */
.settings-grid{display:grid;grid-template-columns:1fr 1fr;gap:18px}
.field-grp{display:flex;flex-direction:column;gap:7px}
.field-grp.full{grid-column:1/-1}
.field-label{font-size:.72rem;font-weight:800;text-transform:uppercase;letter-spacing:.07em;color:var(--muted)}

/* INPUTS & SELECTS */
.kb-select,.kb-input{width:100%;padding:10px 13px;border:1.5px solid var(--border);border-radius:var(--rs);font-family:var(--font);font-size:.95rem;font-weight:700;color:var(--text);background:#fff;transition:border-color .18s,box-shadow .18s}
.kb-select{cursor:pointer}
.kb-select:focus,.kb-input:focus{outline:none;border-color:var(--blue);box-shadow:0 0 0 3px rgba(26,115,232,.12)}
.kb-input{-moz-appearance:textfield}
.kb-input::-webkit-outer-spin-button,.kb-input::-webkit-inner-spin-button{-webkit-appearance:none}
.custom-row{display:flex;gap:8px;margin-top:6px}
.custom-row .kb-select{width:85px;flex-shrink:0}

/* FORMAT PILLS */
.format-group{display:flex;gap:8px;flex-wrap:wrap}
.fmt-pill{padding:8px 16px;border:1.5px solid var(--border);border-radius:var(--rs);cursor:pointer;font-family:var(--font);font-size:.88rem;font-weight:700;color:var(--text);transition:all .18s;user-select:none;display:inline-flex;align-items:center}
.fmt-pill input{display:none}
.fmt-pill:has(input:checked){border-color:var(--blue);background:var(--blue-l);color:var(--blue)}

/* RESIZE MODE */
.mode-group{display:flex;flex-direction:column;gap:10px}
.mode-lbl{display:flex;align-items:center;gap:9px;font-size:.9rem;font-weight:700;color:var(--text);cursor:pointer;user-select:none}
.mode-lbl input[type=radio]{display:none}
.radio-dot{width:20px;height:20px;border-radius:50%;border:2px solid var(--border);background:#fff;display:flex;align-items:center;justify-content:center;flex-shrink:0;transition:all .18s}
.mode-lbl input:checked+.radio-dot{border-color:var(--blue);background:var(--blue)}
.mode-lbl input:checked+.radio-dot::after{content:'';width:8px;height:8px;border-radius:50%;background:#fff;display:block}

/* SUB PANELS */
.sub-panel{display:none;margin-top:8px;padding:13px 15px;background:var(--bg);border-radius:var(--rs);border:1px solid var(--border);gap:10px;flex-wrap:wrap;align-items:flex-end}
.sub-panel.active{display:flex}
.hidden{display:none!important}
.sub-field{display:flex;flex-direction:column;gap:4px;flex:1;min-width:90px}
.sub-field label{font-size:.68rem;font-weight:800;text-transform:uppercase;letter-spacing:.06em;color:var(--muted2)}
.px-sep{font-size:1.2rem;font-weight:800;color:var(--muted2);padding-bottom:4px}

/* ACTION ROW */
.action-row{display:flex;align-items:center;justify-content:center;gap:12px;padding-top:4px;flex-wrap:wrap}

/* LOADER */
.loader-wrap{display:flex;flex-direction:column;align-items:center;gap:10px;color:var(--muted);font-size:.88rem;font-weight:700}
.loader-track{width:100%;max-width:280px;height:6px;background:#e0e0e0;border-radius:3px;overflow:hidden}
.loader-bar{height:100%;width:0%;background:var(--blue);border-radius:3px;transition:width .3s ease}

/* ERROR */
.error-box{display:flex;align-items:center;gap:10px;background:#fce8e6;border:1.5px solid #ea4335;border-radius:var(--rs);padding:12px 15px;color:#c62828;font-size:.86rem;font-weight:700}

/* RESULT CARD */
.result-card{overflow:hidden}
.result-header{display:flex;align-items:center;gap:14px;padding:18px 24px;background:linear-gradient(135deg,var(--navy),#1a4f8a);color:#fff}
.result-check{width:40px;height:40px;background:var(--green);border-radius:50%;display:flex;align-items:center;justify-content:center;color:#fff;flex-shrink:0}
.result-header span{font-size:1rem;font-weight:800}
.result-body{display:flex;gap:20px;padding:24px;flex-wrap:wrap}
.result-img-wrap{flex:1;min-width:160px;border-radius:var(--rs);overflow:hidden;background:var(--bg);border:1px solid var(--border);display:flex;align-items:center;justify-content:center;max-height:260px}
.result-img-wrap img{max-width:100%;max-height:260px;object-fit:contain}
.result-info{flex:0 0 200px;display:flex;flex-direction:column;gap:12px}
.size-box{background:var(--bg);border:1px solid var(--border);border-radius:var(--rs);padding:14px;display:flex;align-items:center;gap:8px;justify-content:space-between}
.sz{display:flex;flex-direction:column;gap:3px;text-align:center}
.sz-lbl{font-size:.65rem;font-weight:800;text-transform:uppercase;letter-spacing:.08em;color:var(--muted2)}
.sz-val{font-size:.88rem;font-weight:800;color:var(--text)}
.sz-arrow{color:var(--blue);font-size:1.2rem}

/* SEO */
.seo-section{display:flex;flex-direction:column;gap:18px}
.seo-block{background:#fff;border-radius:var(--r);border:1px solid var(--border);padding:26px 30px;box-shadow:var(--shadow);display:flex;flex-direction:column;gap:12px}
.seo-h2{font-size:1.15rem;font-weight:800;color:var(--navy);padding-bottom:10px;border-bottom:2px solid var(--blue-l);margin-bottom:2px}
.seo-block p{font-size:.93rem;color:#3c4043;line-height:1.75}

/* FAQ */
.section-title{font-size:1.25rem;font-weight:800;color:var(--text);margin-bottom:14px;text-align:center}
.faq-list{background:#fff;border-radius:var(--r);border:1px solid var(--border);overflow:hidden;box-shadow:var(--shadow)}
.faq-item{border-bottom:1px solid var(--border)}
.faq-item:last-child{border-bottom:none}
.faq-q{width:100%;background:none;border:none;padding:16px 20px;font-family:var(--font);font-size:.93rem;font-weight:700;color:var(--text);cursor:pointer;display:flex;justify-content:space-between;align-items:center;gap:12px;text-align:left;transition:background .18s}
.faq-q:hover{background:var(--bg)}
.faq-icon{font-size:1.3rem;color:var(--blue);font-weight:800;flex-shrink:0;transition:transform .22s;line-height:1}
.faq-item.open .faq-icon{transform:rotate(45deg)}
.faq-a{display:none;padding:0 20px 16px;font-size:.86rem;color:var(--muted);line-height:1.65}
.faq-item.open .faq-a{display:block}

/* FOOTER */
.site-footer{background:var(--navy);padding:26px 0;margin-top:auto}
.footer-inner{display:flex;align-items:center;gap:18px;flex-wrap:wrap}
.footer-logo{display:flex;align-items:center;gap:8px;font-size:.88rem;font-weight:800;color:#fff}
.footer-logo-box{width:26px;height:26px;background:rgba(255,255,255,.15);border-radius:6px;display:grid;grid-template-columns:1fr 1fr;gap:3px;padding:4px}
.footer-logo-box span{border-radius:1px}
.footer-logo-box .b1,.footer-logo-box .b2,.footer-logo-box .b3{background:rgba(255,255,255,.9)}
.footer-logo-box .b4{background:var(--green)}
.footer-nav{display:flex;gap:18px}
.footer-nav a{color:rgba(255,255,255,.65);text-decoration:none;font-size:.8rem;font-weight:700;transition:color .18s}
.footer-nav a:hover{color:#fff}
.footer-copy{margin-left:auto;font-size:.76rem;color:rgba(255,255,255,.4)}

/* ══ MOBILE ≤ 640px ══ */
@media(max-width:640px){
  .header-nav{display:none}
  .hero{padding:26px 0 20px}
  .main-content{padding:18px 14px 48px;gap:18px}
  .upload-zone{padding:36px 14px 26px}
  .upload-icon-wrap{width:60px;height:60px}
  .upload-title{font-size:1.15rem}
  .upload-badges{gap:6px}
  .badge{font-size:.68rem;padding:3px 8px}
  .settings-panel{padding:18px 14px;gap:16px}
  .settings-grid{grid-template-columns:1fr;gap:14px}
  .format-group{gap:6px}
  .fmt-pill{padding:7px 13px;font-size:.84rem}
  .sub-panel.active{flex-direction:column}
  .sub-field{min-width:100%}
  .action-row{flex-direction:column;align-items:stretch}
  .btn-green{width:100%;padding:13px 20px}
  .btn-outline{width:100%}
  .loader-track{max-width:100%}
  .result-body{flex-direction:column;padding:16px}
  .result-info{flex:none;width:100%}
  .result-img-wrap{min-width:unset;max-height:200px}
  .result-header{padding:14px 16px}
  .seo-block{padding:18px 14px}
  .faq-q{padding:14px 16px;font-size:.88rem}
  .faq-a{padding:0 16px 14px}
  .footer-inner{flex-direction:column;align-items:flex-start;gap:10px}
  .footer-copy{margin-left:0}
}

/* ══ TABLET 641–860px ══ */
@media(min-width:641px) and (max-width:860px){
  .settings-grid{grid-template-columns:1fr 1fr;gap:16px}
  .result-info{flex:0 0 180px}
}


/* AI PANEL */
.ai-panel{
  background:#f8fbff;
  border:1px solid #d8e4f5;
  border-radius:14px;
  padding:18px;
  display:flex;
  flex-direction:column;
  gap:14px;
}

.ai-head{
  display:flex;
  align-items:flex-start;
  gap:12px;
}

.ai-badge{
  width:42px;
  height:42px;
  border-radius:50%;
  background:linear-gradient(135deg,var(--blue),var(--navy));
  color:#fff;
  display:flex;
  align-items:center;
  justify-content:center;
  font-size:.82rem;
  font-weight:800;
  flex-shrink:0;
  box-shadow:0 6px 18px rgba(26,115,232,.18);
}

.ai-head-copy h3{
  font-size:1rem;
  font-weight:800;
  color:var(--navy);
  margin-bottom:4px;
}

.ai-head-copy p{
  font-size:.84rem;
  color:var(--muted);
  line-height:1.55;
}

.ai-detected{
  background:#edf4ff;
  border:1px solid #d3e1f5;
  border-radius:10px;
  padding:12px 14px;
  color:#29496d;
  font-size:.84rem;
  font-weight:700;
  line-height:1.5;
}

.ai-grid{
  display:grid;
  grid-template-columns:repeat(2,1fr);
  gap:12px;
}

.ai-card{
  text-align:left;
  background:#fff;
  border:1.5px solid #d7e3f4;
  border-radius:12px;
  padding:14px;
  cursor:pointer;
  transition:all .18s ease;
  display:flex;
  flex-direction:column;
  gap:6px;
  font-family:var(--font);
}

.ai-card:hover{
  border-color:var(--blue);
  transform:translateY(-1px);
  box-shadow:0 6px 18px rgba(26,115,232,.10);
}

.ai-card.active{
  border-color:var(--blue);
  background:#eef5ff;
  box-shadow:0 0 0 3px rgba(26,115,232,.10);
}

.ai-card strong{
  font-size:.92rem;
  color:var(--navy);
  font-weight:800;
}

.ai-card span:not(.ai-tag){
  font-size:.82rem;
  font-weight:800;
  color:#2f537e;
}

.ai-card small{
  font-size:.76rem;
  color:var(--muted);
  line-height:1.45;
}

.ai-tag{
  align-self:flex-start;
  background:#e8f0fe;
  color:var(--blue);
  border-radius:999px;
  padding:4px 9px;
  font-size:.66rem;
  font-weight:800;
}

.ai-applied{
  background:#fff;
  border:1px solid #d7e3f4;
  border-radius:10px;
  padding:11px 13px;
  font-size:.82rem;
  font-weight:700;
  color:#29496d;
}

.ai-result-box{
  background:#eef6ff;
  border:1px solid #d7e5f8;
  border-radius:12px;
  padding:12px 14px;
}

.ai-result-box h4{
  font-size:.84rem;
  font-weight:800;
  color:var(--navy);
  margin-bottom:5px;
}

.ai-result-box p{
  font-size:.78rem;
  color:var(--muted);
  line-height:1.5;
}

/* MOBILE */
@media(max-width:640px){
  .ai-grid{
    grid-template-columns:1fr;
  }
}


/* ══ DESKTOP ≥ 768px ══ */
@media(min-width:768px){
  .footer-inner{justify-content:space-between}
  .footer-nav{margin-left:auto}
  .footer-copy{width:100%;text-align:center;margin-top:12px}
}