* { box-sizing: border-box; }
body {
    font-family: -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto, Helvetica, Arial, sans-serif;
    background: #f4f5f7;
    color: #1f2430;
    margin: 0;
    padding: 20px;
}
.wrap { max-width: 1100px; margin: 0 auto; }
.wrap.narrow { max-width: 560px; }

header {
    display: flex;
    justify-content: space-between;
    align-items: center;
    margin-bottom: 20px;
    flex-wrap: wrap;
    gap: 10px;
}
h1 { font-size: 1.6rem; margin: 0; }

.btn {
    display: inline-block;
    padding: 9px 16px;
    border-radius: 8px;
    border: 1px solid #d6d9e0;
    background: #fff;
    color: #1f2430;
    text-decoration: none;
    font-size: 0.9rem;
    cursor: pointer;
}
.btn:hover { background: #eef0f3; }
.btn-primary { background: #2563eb; color: #fff; border-color: #2563eb; }
.btn-primary:hover { background: #1d4ed8; }
.btn-danger { background: #fff; color: #dc2626; border-color: #f3c7c7; }
.btn-danger:hover { background: #fee2e2; }
.btn-light { background: #fff; }
.btn-small { padding: 6px 10px; font-size: 0.8rem; }
.btn-block { width: 100%; padding: 12px; font-size: 1rem; margin-top: 6px; }
.btn:disabled { opacity: 0.5; cursor: not-allowed; }

.flash {
    padding: 12px 16px;
    border-radius: 8px;
    margin-bottom: 16px;
    font-size: 0.9rem;
}
.flash.success { background: #dcfce7; color: #166534; border: 1px solid #bbf7d0; }
.flash.error { background: #fee2e2; color: #991b1b; border: 1px solid #fecaca; }
.flash ul { margin: 0; padding-left: 18px; }

.stats {
    display: flex;
    gap: 12px;
    margin-bottom: 18px;
    flex-wrap: wrap;
}
.stat-card {
    background: #fff;
    border: 1px solid #e5e7eb;
    border-radius: 10px;
    padding: 14px 18px;
    flex: 1;
    min-width: 150px;
}
.stat-label { display: block; font-size: 0.78rem; color: #6b7280; margin-bottom: 4px; }
.stat-value { display: block; font-size: 1.3rem; font-weight: 700; }

.search-bar {
    display: flex;
    gap: 8px;
    margin-bottom: 18px;
}
.search-bar input {
    flex: 1;
    padding: 9px 12px;
    border-radius: 8px;
    border: 1px solid #d6d9e0;
    font-size: 0.9rem;
}

.empty { text-align: center; color: #6b7280; padding: 40px 0; }

.grid {
    display: grid;
    grid-template-columns: repeat(auto-fill, minmax(230px, 1fr));
    gap: 16px;
}
.card {
    background: #fff;
    border: 1px solid #e5e7eb;
    border-radius: 12px;
    overflow: hidden;
    display: flex;
    flex-direction: column;
}
.card-img {
    width: 100%;
    aspect-ratio: 4/3;
    background: #f0f1f3;
    overflow: hidden;
}
.card-img img { width: 100%; height: 100%; object-fit: cover; display: block; }
.card-body { padding: 12px 14px 14px; }
.card-body h3 { margin: 0 0 8px; font-size: 1rem; }

.price-row {
    display: flex;
    align-items: baseline;
    gap: 8px;
    flex-wrap: wrap;
    margin-bottom: 6px;
}
.current { font-weight: 700; font-size: 1.05rem; }
.original { text-decoration: line-through; color: #9ca3af; font-size: 0.85rem; }
.diff { font-size: 0.78rem; font-weight: 600; padding: 2px 6px; border-radius: 5px; }
.diff.down { color: #166534; background: #dcfce7; }
.diff.up { color: #991b1b; background: #fee2e2; }
.diff.flat { color: #6b7280; background: #f3f4f6; }

.qty { font-size: 0.85rem; color: #4b5563; margin-bottom: 10px; }
.card-actions { display: flex; gap: 8px; }

.form-card {
    background: #fff;
    border: 1px solid #e5e7eb;
    border-radius: 12px;
    padding: 20px;
    display: flex;
    flex-direction: column;
    gap: 14px;
}
label {
    display: flex;
    flex-direction: column;
    gap: 6px;
    font-size: 0.85rem;
    font-weight: 600;
    color: #374151;
}
input[type="text"], input[type="number"] {
    padding: 10px 12px;
    border-radius: 8px;
    border: 1px solid #d6d9e0;
    font-size: 0.95rem;
    font-weight: 400;
}
.row2 { display: flex; gap: 12px; }
.row2 label { flex: 1; }

.camera-section {
    border: 1px dashed #d6d9e0;
    border-radius: 10px;
    padding: 14px;
    background: #fafbfc;
}
.camera-label { margin-bottom: 10px; }
#cameraArea {
    width: 100%;
    aspect-ratio: 4/3;
    background: #111827;
    border-radius: 8px;
    overflow: hidden;
    display: flex;
    align-items: center;
    justify-content: center;
    margin-bottom: 10px;
}
#cameraArea video, #cameraArea img {
    width: 100%;
    height: 100%;
    object-fit: cover;
}
.camera-buttons { display: flex; gap: 8px; flex-wrap: wrap; }
.cam-error { color: #dc2626; font-size: 0.82rem; margin: 8px 0 0; font-weight: 500; }

@media (max-width: 480px) {
    .row2 { flex-direction: column; }
    header { flex-direction: column; align-items: flex-start; }
}