* { margin: 0; padding: 0; box-sizing: border-box; }
:root {
  --bg: #0f1117;
  --surface: #1a1d27;
  --surface2: #242835;
  --border: #2e3345;
  --text: #e4e6ef;
  --text2: #8b8fa3;
  --primary: #6366f1;
  --primary-hover: #818cf8;
  --danger: #ef4444;
  --danger-hover: #f87171;
  --success: #22c55e;
  --warning: #f59e0b;
  --radius: 10px;
  --shadow: 0 4px 24px rgba(0,0,0,.3);
}
body { font-family: -apple-system, BlinkMacSystemFont, 'Segoe UI', Roboto, sans-serif; background: var(--bg); color: var(--text); min-height: 100vh; }
a { color: var(--primary); text-decoration: none; }
input, select, textarea { font-family: inherit; }

/* Login */
.login-screen { display: flex; align-items: center; justify-content: center; min-height: 100vh; background: var(--bg); }
.login-card { background: var(--surface); border: 1px solid var(--border); border-radius: var(--radius); padding: 3rem 2.5rem; width: 100%; max-width: 380px; text-align: center; box-shadow: var(--shadow); }
.login-logo { font-size: 3rem; font-weight: 800; margin-bottom: .5rem; }
.logo-u { color: var(--primary); }
.logo-p { color: var(--success); }
.login-card h1 { font-size: 1.4rem; margin-bottom: .25rem; }
.login-subtitle { color: var(--text2); font-size: .9rem; margin-bottom: 1.5rem; }

/* Forms */
.form-group { margin-bottom: 1rem; }
.form-group label { display: block; font-size: .85rem; color: var(--text2); margin-bottom: .35rem; }
.form-group input, .form-group select, .form-group textarea {
  width: 100%; padding: .6rem .8rem; background: var(--surface2); border: 1px solid var(--border);
  border-radius: 6px; color: var(--text); font-size: .95rem; outline: none; transition: border .2s;
}
.form-group input:focus, .form-group select:focus, .form-group textarea:focus { border-color: var(--primary); }
.req { color: var(--danger); }

/* Buttons */
.btn { padding: .55rem 1.2rem; border: none; border-radius: 6px; font-size: .9rem; font-weight: 600; cursor: pointer; transition: all .2s; display: inline-flex; align-items: center; gap: .4rem; }
.btn-primary { background: var(--primary); color: #fff; }
.btn-primary:hover { background: var(--primary-hover); }
.btn-danger { background: var(--danger); color: #fff; }
.btn-danger:hover { background: var(--danger-hover); }
.btn-ghost { background: transparent; color: var(--text2); border: 1px solid var(--border); }
.btn-ghost:hover { background: var(--surface2); color: var(--text); }
.btn-block { width: 100%; }
.btn-sm { padding: .4rem .8rem; font-size: .82rem; }
.btn-sm.btn-primary { padding: .4rem 1rem; }

/* Layout */
.dashboard { display: flex; min-height: 100vh; }
.sidebar { width: 220px; background: var(--surface); border-right: 1px solid var(--border); display: flex; flex-direction: column; position: fixed; top: 0; left: 0; bottom: 0; z-index: 50; }
.sidebar-header { padding: 1.2rem 1rem; font-size: 1.1rem; font-weight: 700; border-bottom: 1px solid var(--border); }
.sidebar-nav { flex: 1; padding: .5rem 0; }
.nav-item { display: flex; align-items: center; gap: .6rem; padding: .7rem 1rem; color: var(--text2); font-size: .9rem; font-weight: 500; transition: all .15s; }
.nav-item:hover { background: var(--surface2); color: var(--text); }
.nav-item.active { background: var(--surface2); color: var(--primary); border-right: 3px solid var(--primary); }
.sidebar-footer { padding: .8rem 1rem; border-top: 1px solid var(--border); }
.main-content { margin-left: 220px; flex: 1; padding: 1.5rem 2rem; min-height: 100vh; }

/* Views */
.view { display: none; }
.view.active { display: block; }
.view-header { display: flex; align-items: center; justify-content: space-between; margin-bottom: 1.5rem; flex-wrap: wrap; gap: .8rem; }
.view-header h2 { font-size: 1.3rem; }
.view-actions { display: flex; align-items: center; gap: .6rem; flex-wrap: wrap; }
.filter-group { display: flex; gap: .5rem; flex-wrap: wrap; }
.input-sm { padding: .35rem .6rem; background: var(--surface2); border: 1px solid var(--border); border-radius: 6px; color: var(--text); font-size: .85rem; }
.input-sm:focus { border-color: var(--primary); outline: none; }

/* Table */
.table-wrap { overflow-x: auto; }
.data-table { width: 100%; border-collapse: collapse; }
.data-table th { text-align: left; padding: .7rem .8rem; font-size: .8rem; text-transform: uppercase; letter-spacing: .04em; color: var(--text2); border-bottom: 1px solid var(--border); position: sticky; top: 0; background: var(--surface); }
.data-table td { padding: .6rem .8rem; border-bottom: 1px solid var(--border); font-size: .9rem; vertical-align: middle; }
.data-table tr:hover { background: var(--surface2); }
.product-thumb { width: 48px; height: 48px; object-fit: cover; border-radius: 6px; background: var(--surface2); }
.no-thumb { width: 48px; height: 48px; background: var(--surface2); border-radius: 6px; display: flex; align-items: center; justify-content: center; color: var(--text2); font-size: .75rem; }
.badge { display: inline-block; padding: .15rem .5rem; border-radius: 4px; font-size: .75rem; font-weight: 600; margin-right: .3rem; }
.badge-available { background: rgba(34,197,94,.15); color: var(--success); }
.badge-sold { background: rgba(239,68,68,.15); color: var(--danger); }
.badge-promo { background: rgba(245,158,11,.15); color: var(--warning); }
.count-bar { margin-top: .8rem; font-size: .85rem; color: var(--text2); }

/* Product Form */
.product-form { max-width: 800px; }
.form-grid { display: grid; grid-template-columns: 1fr 1fr; gap: .8rem 1.5rem; }
.form-actions { margin-top: 1.5rem; display: flex; gap: .8rem; }

/* Image Gallery */
.image-gallery { display: flex; flex-wrap: wrap; gap: .6rem; margin-bottom: .8rem; }
.image-gallery:empty { display: none; }
.img-card { position: relative; width: 120px; border-radius: 8px; overflow: hidden; border: 2px solid var(--border); background: var(--surface2); transition: border-color .2s; cursor: pointer; }
.img-card:hover { border-color: var(--primary); }
.img-card.primary { border-color: var(--primary); box-shadow: 0 0 0 2px var(--primary); }
.img-card img { width: 100%; height: 90px; object-fit: cover; display: block; }
.img-card .img-actions { position: absolute; top: 4px; right: 4px; display: flex; gap: 3px; }
.img-card .img-actions button { width: 22px; height: 22px; border: none; border-radius: 4px; cursor: pointer; font-size: 11px; display: flex; align-items: center; justify-content: center; padding: 0; line-height: 1; }
.img-star { background: rgba(99,102,241,.85); color: #fff; }
.img-star:hover { background: var(--primary-hover); }
.img-star.active { background: var(--warning); }
.img-del { background: rgba(239,68,68,.85); color: #fff; }
.img-del:hover { background: var(--danger-hover); }

/* Upload Area */
.upload-area { border: 2px dashed var(--border); border-radius: 8px; padding: 1rem; text-align: center; background: var(--surface2); }
.upload-buttons { display: flex; gap: .6rem; justify-content: center; flex-wrap: wrap; }
.upload-btn { cursor: pointer; }
.camera-btn { color: var(--success); border-color: var(--success); }
.camera-btn:hover { background: rgba(34,197,94,.15); }
.upload-progress { margin-top: .6rem; font-size: .85rem; color: var(--text2); }
.upload-progress .bar { height: 4px; background: var(--surface); border-radius: 2px; margin-top: .3rem; overflow: hidden; }
.upload-progress .bar-inner { height: 100%; background: var(--primary); transition: width .3s; border-radius: 2px; }

/* Lightbox */
.lightbox-overlay { position: fixed; inset: 0; background: rgba(0,0,0,.85); z-index: 9999; display: flex; align-items: center; justify-content: center; cursor: pointer; }
.lightbox-overlay img { max-width: 90vw; max-height: 85vh; border-radius: 8px; box-shadow: 0 8px 32px rgba(0,0,0,.5); }

/* Toast */
.toast { position: fixed; bottom: 2rem; right: 2rem; padding: .8rem 1.5rem; border-radius: 8px; font-size: .9rem; font-weight: 500; z-index: 9999; animation: slideUp .3s ease; }
.toast.success { background: var(--success); color: #fff; }
.toast.error { background: var(--danger); color: #fff; }
@keyframes slideUp { from { transform: translateY(20px); opacity: 0; } to { transform: translateY(0); opacity: 1; } }

/* Confirm */
.confirm-overlay { position: fixed; inset: 0; background: rgba(0,0,0,.6); display: flex; align-items: center; justify-content: center; z-index: 9998; }
.confirm-dialog { background: var(--surface); border: 1px solid var(--border); border-radius: var(--radius); padding: 2rem; max-width: 400px; text-align: center; box-shadow: var(--shadow); }
.confirm-dialog p { margin-bottom: 1.5rem; font-size: 1rem; }
.confirm-actions { display: flex; gap: .8rem; justify-content: center; }

/* Responsive */
@media (max-width: 768px) {
  .sidebar { width: 60px; }
  .sidebar-header { font-size: 0; padding: 1rem .5rem; text-align: center; }
  .sidebar-header .logo-u, .sidebar-header .logo-p { font-size: 1.4rem; }
  .nav-item span svg + text, .nav-item { font-size: 0; }
  .nav-item svg { font-size: 1.3rem; }
  .sidebar-footer { text-align: center; }
  .sidebar-footer .btn { font-size: 0; padding: .4rem; }
  .sidebar-footer .btn::after { content: '↩'; font-size: 1rem; }
  .main-content { margin-left: 60px; padding: 1rem; }
  .form-grid { grid-template-columns: 1fr; }
  .view-header { flex-direction: column; align-items: flex-start; }
  .filter-group { width: 100%; }
  .input-sm { flex: 1; min-width: 0; }
}

.hidden { display: none !important; }
.error-msg { color: var(--danger); font-size: .85rem; margin-top: .5rem; }