:root{
  --accent:#4f46e5;
  --bg:#f5f6fa;
  --card:#ffffff;
  --text:#15151a;
  --muted:#6b6b76;
  --border:#e3e4ea;
  --radius:14px;
  --danger:#e5484d;
  --success:#12b76a;
}
*{box-sizing:border-box;margin:0;padding:0}
body{font-family:'Segoe UI',Roboto,Arial,sans-serif;background:var(--bg);color:var(--text)}
a{color:inherit;text-decoration:none}

.auth-page{display:flex;align-items:center;justify-content:center;min-height:100vh;
  background:linear-gradient(135deg,#0a0a0c,#1a1a24);animation:fadeIn .6s ease}
.auth-card{
  background:var(--card);padding:44px;border-radius:20px;width:380px;
  box-shadow:0 30px 60px rgba(0,0,0,.35);animation:fadeUp .5s ease both;
}
@keyframes fadeUp{from{opacity:0;transform:translateY(20px)}to{opacity:1;transform:translateY(0)}}
@keyframes fadeIn{from{opacity:0}to{opacity:1}}
.auth-card h1{font-size:1.5rem;margin-bottom:6px}
.muted{color:var(--muted);font-size:.9rem;margin-bottom:24px}
.auth-card label{display:block;font-size:.85rem;margin:14px 0 6px;color:var(--muted)}
.auth-card input,.auth-card select,.auth-card textarea{
  width:100%;padding:12px 14px;border:1px solid var(--border);border-radius:10px;font-size:.9rem;
  transition:border-color .2s;
}
.auth-card input:focus,.auth-card select:focus,.auth-card textarea:focus{outline:none;border-color:var(--accent)}
.alert{background:#fdecec;color:var(--danger);padding:10px 14px;border-radius:10px;font-size:.85rem;margin-bottom:16px}
.alert.success{background:#e7f9f1;color:var(--success)}

.btn{
  display:inline-flex;align-items:center;gap:8px;justify-content:center;
  padding:12px 22px;border-radius:10px;background:var(--accent);color:#fff;
  border:none;cursor:pointer;font-size:.9rem;font-weight:600;
  transition:transform .15s,box-shadow .15s;
}
.btn:hover{transform:translateY(-2px);box-shadow:0 8px 20px rgba(79,70,229,.3)}
.btn.block{width:100%;margin-top:20px}
.btn.danger{background:var(--danger)}
.btn.outline{background:transparent;border:1px solid var(--border);color:var(--text)}
.btn.small{padding:8px 14px;font-size:.82rem}

/* Dashboard shell */
.shell{display:flex;min-height:100vh}
.sidebar{
  width:230px;background:#101018;color:#fff;padding:26px 18px;
  display:flex;flex-direction:column;gap:6px;position:sticky;top:0;height:100vh;
  animation:fadeIn .4s ease;
}
.sidebar .logo{font-weight:800;font-size:1.15rem;margin-bottom:30px;padding:0 8px;display:flex;align-items:center;gap:10px;letter-spacing:.2px}
.sidebar .logo img{width:32px;height:32px;border-radius:8px;object-fit:cover;box-shadow:0 4px 12px rgba(0,0,0,.4)}
.sidebar a{border-radius:10px;transition:background .2s,transform .15s}
.sidebar a:hover{transform:translateX(2px)}
.sidebar a{
  padding:11px 14px;border-radius:10px;color:#b6b6c3;font-size:.9rem;
  display:flex;align-items:center;gap:10px;transition:background .2s,color .2s;
}
.sidebar a:hover,.sidebar a.active{background:rgba(255,255,255,.08);color:#fff}
.main{flex:1;padding:36px 44px;max-width:1200px}
.topbar{display:flex;justify-content:space-between;align-items:center;margin-bottom:30px}
.topbar h1{font-size:1.6rem}

.stat-grid{display:grid;grid-template-columns:repeat(auto-fit,minmax(180px,1fr));gap:18px;margin-bottom:36px}
.stat-card{
  background:var(--card);border:1px solid var(--border);border-radius:var(--radius);
  padding:22px;animation:fadeUp .4s ease both;
}
.stat-card .num{font-size:1.8rem;font-weight:800}
.stat-card .label{color:var(--muted);font-size:.85rem;margin-top:4px}

table{width:100%;border-collapse:collapse;background:var(--card);border-radius:var(--radius);overflow:hidden}
th,td{padding:14px 16px;text-align:left;font-size:.88rem;border-bottom:1px solid var(--border)}
th{color:var(--muted);font-weight:600;background:#fafafd}
tr{transition:background .15s}
tr:hover{background:#fafafd}
img.thumb-sm{width:44px;height:44px;object-fit:cover;border-radius:8px}

.card-panel{background:var(--card);border:1px solid var(--border);border-radius:var(--radius);padding:28px;animation:fadeUp .4s ease both}
.form-grid{display:grid;grid-template-columns:1fr 1fr;gap:16px}
.form-grid .full{grid-column:1/-1}
.form-grid label{display:block;font-size:.85rem;color:var(--muted);margin-bottom:6px}
.form-grid input,.form-grid select,.form-grid textarea{
  width:100%;padding:11px 14px;border:1px solid var(--border);border-radius:10px;font-size:.9rem;
}
.file-row{display:flex;gap:10px;flex-wrap:wrap}
.file-row .slot{
  width:90px;height:90px;border:1.5px dashed var(--border);border-radius:12px;
  display:flex;align-items:center;justify-content:center;font-size:.75rem;color:var(--muted);
  cursor:pointer;position:relative;overflow:hidden;
}
.file-row .slot img{width:100%;height:100%;object-fit:cover;position:absolute;inset:0}
.badge{display:inline-block;padding:3px 10px;border-radius:999px;font-size:.72rem;font-weight:700}
.badge.active{background:#e7f9f1;color:var(--success)}
.badge.inactive{background:#f1f1f4;color:var(--muted)}
.progress-bar{height:6px;background:var(--border);border-radius:99px;overflow:hidden;margin-top:6px}
.progress-bar .fill{height:100%;background:var(--accent);transition:width .4s ease}

/* ---- Mobile responsiveness ---- */
@media (max-width: 900px){
  .shell{flex-direction:column}
  .sidebar{
    flex-direction:row;flex-wrap:wrap;width:100%;height:auto;
    padding:12px 16px;gap:6px 14px;position:sticky;top:0;z-index:20;
  }
  .sidebar .logo{width:100%;margin-bottom:8px}
  .sidebar a{margin-top:0;padding:8px 10px}
  .main{padding:20px 16px;max-width:100%}
  .form-grid{grid-template-columns:1fr}
  .stat-grid{grid-template-columns:1fr 1fr}
  table{display:block;overflow-x:auto;white-space:nowrap}
}
@media (max-width: 480px){
  .stat-grid{grid-template-columns:1fr}
  .topbar{flex-direction:column;align-items:flex-start;gap:10px}
}

/* ---- Upload progress bar ---- */
.upload-progress{
  display:none;margin-top:10px;height:8px;border-radius:99px;
  background:var(--border,#26262e);overflow:hidden;
}
.upload-progress.active{display:block}
.upload-progress .fill{
  height:100%;width:0%;background:var(--accent,#111);
  transition:width .15s ease;
}
.upload-status{font-size:.8rem;color:var(--muted,#9a9aa5);margin-top:6px;display:none}
.upload-status.active{display:block}

/* Preview button/panel styling is injected inline by live-preview.js so it always
   renders as a true floating overlay, even if this stylesheet is stale/cached. */

/* ===== Stock badges ===== */
.stock-badge{padding:3px 10px;border-radius:999px;font-size:.75rem;font-weight:600}
.stock-badge.stock-unlimited{background:rgba(99,102,241,.15);color:#818cf8}
.stock-badge.stock-in{background:rgba(34,197,94,.15);color:#4ade80}
.stock-badge.stock-low{background:rgba(234,179,8,.15);color:#facc15}
.stock-badge.stock-out{background:rgba(239,68,68,.15);color:#f87171}