:root {
    --bg: #f4f6f8;
    --card: #ffffff;
    --text: #1a1f36;
    --muted: #6b7280;
    --primary: #2563eb;
    --primary-dark: #1d4ed8;
    --danger: #dc2626;
    --success: #16a34a;
    --border: #e5e7eb;
    --radius: 12px;
    --shadow: 0 8px 24px rgba(15, 23, 42, 0.08);
}

* { box-sizing: border-box; }

body {
    margin: 0;
    font-family: -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto, sans-serif;
    background: var(--bg);
    color: var(--text);
    line-height: 1.5;
}

a { color: var(--primary); text-decoration: none; }

.app-header {
    position: sticky;
    top: 0;
    z-index: 10;
    background: var(--card);
    border-bottom: 1px solid var(--border);
}

.app-header-inner {
    max-width: 720px;
    margin: 0 auto;
    padding: 12px 16px;
    display: flex;
    justify-content: space-between;
    align-items: center;
    gap: 12px;
}

.brand { font-weight: 700; color: var(--text); }

.user-meta {
    display: flex;
    align-items: center;
    gap: 10px;
    font-size: 14px;
    color: var(--muted);
}

.btn-link { font-size: 14px; }

.app-main {
    max-width: 720px;
    margin: 0 auto;
    padding: 16px;
}

.login-page {
    min-height: 100vh;
    display: flex;
    align-items: center;
    justify-content: center;
    padding: 24px;
}

.login-card {
    width: 100%;
    max-width: 400px;
    background: var(--card);
    border-radius: var(--radius);
    box-shadow: var(--shadow);
    padding: 28px;
}

.login-card h1 { margin: 0 0 8px; font-size: 28px; }
.subtitle { color: var(--muted); margin: 0 0 24px; }

.hero { margin-bottom: 20px; }
.hero h2 { margin: 0 0 8px; }
.hero p { margin: 0; color: var(--muted); }

.action-grid {
    display: grid;
    gap: 12px;
    margin-bottom: 24px;
}

.action-card {
    display: block;
    background: var(--card);
    border: 1px solid var(--border);
    border-radius: var(--radius);
    padding: 18px;
    box-shadow: var(--shadow);
}

.action-card.primary {
    background: linear-gradient(135deg, #2563eb, #1d4ed8);
    color: #fff;
    border: none;
}

.action-title { display: block; font-size: 18px; font-weight: 700; }
.action-desc { display: block; margin-top: 4px; font-size: 14px; opacity: 0.85; }

.info-box, .detail-card, .form-section {
    background: var(--card);
    border: 1px solid var(--border);
    border-radius: var(--radius);
    padding: 16px;
    margin-bottom: 16px;
}

.info-box h3, .form-section h3 { margin: 0 0 12px; font-size: 16px; }
.info-box ol { margin: 0; padding-left: 20px; color: var(--muted); }

.stack-form label {
    display: block;
    margin-bottom: 12px;
    font-size: 14px;
    font-weight: 600;
}

.stack-form input,
.stack-form select,
.stack-form textarea {
    width: 100%;
    margin-top: 6px;
    padding: 12px;
    border: 1px solid var(--border);
    border-radius: 10px;
    font: inherit;
    background: #fff;
}

.row-2, .row-3 {
    display: grid;
    gap: 12px;
}

.row-2 { grid-template-columns: 1fr 1fr; }
.row-3 { grid-template-columns: 1fr 1fr 1fr; }

@media (max-width: 600px) {
    .row-3 { grid-template-columns: 1fr; }
}

.btn {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    padding: 12px 16px;
    border: none;
    border-radius: 10px;
    font: inherit;
    font-weight: 600;
    cursor: pointer;
}

.btn-primary { background: var(--primary); color: #fff; }
.btn-primary:hover { background: var(--primary-dark); }
.btn-secondary { background: #e5e7eb; color: var(--text); }
.btn-sm { padding: 8px 12px; font-size: 14px; }
.btn-block { width: 100%; }

.alert {
    padding: 12px 14px;
    border-radius: 10px;
    margin-bottom: 16px;
    font-size: 14px;
}

.alert-success { background: #dcfce7; color: #166534; }
.alert-danger { background: #fee2e2; color: #991b1b; }

.page-head { margin-bottom: 16px; }
.page-head h2 { margin: 8px 0 0; }
.back-link { color: var(--muted); font-size: 14px; }

.item-row {
    border: 1px dashed var(--border);
    border-radius: 10px;
    padding: 12px;
    margin-bottom: 12px;
}

.hint { color: var(--muted); font-size: 13px; margin: 0 0 12px; }

.file-label input[type="file"] {
    padding: 10px;
    background: #f9fafb;
}

.image-preview img {
    width: 100%;
    max-height: 180px;
    object-fit: cover;
    border-radius: 10px;
    margin-top: 8px;
    border: 1px solid var(--border);
}

.filter-bar {
    display: flex;
    flex-wrap: wrap;
    gap: 10px;
    align-items: end;
    margin-bottom: 16px;
}

.filter-bar label { font-size: 13px; font-weight: 600; }
.filter-bar input { margin-top: 4px; padding: 8px; border-radius: 8px; border: 1px solid var(--border); }

.order-list { display: grid; gap: 10px; }

.order-card {
    display: block;
    background: var(--card);
    border: 1px solid var(--border);
    border-radius: var(--radius);
    padding: 14px;
    color: inherit;
}

.order-card-top, .order-card-bottom {
    display: flex;
    justify-content: space-between;
    gap: 8px;
}

.order-card-meta {
    display: flex;
    flex-direction: column;
    gap: 2px;
    margin: 8px 0;
    color: var(--muted);
    font-size: 14px;
}

.badge {
    font-size: 12px;
    background: #eff6ff;
    color: #1d4ed8;
    padding: 2px 8px;
    border-radius: 999px;
}

.detail-row {
    display: flex;
    justify-content: space-between;
    gap: 12px;
    padding: 8px 0;
    border-bottom: 1px solid var(--border);
    font-size: 14px;
}

.detail-row:last-child { border-bottom: none; }
.detail-row span { color: var(--muted); }

.item-table-row {
    display: grid;
    grid-template-columns: 1fr auto auto;
    gap: 8px;
    padding: 10px 0;
    border-bottom: 1px solid var(--border);
    font-size: 14px;
}

.muted { color: var(--muted); font-size: 13px; }

.receipt-grid {
    display: grid;
    grid-template-columns: repeat(2, 1fr);
    gap: 10px;
}

.receipt-thumb img {
    width: 100%;
    border-radius: 10px;
    border: 1px solid var(--border);
}

.empty-state {
    text-align: center;
    color: var(--muted);
    padding: 40px 16px;
}

#related_order_result .pick-list {
    border: 1px solid var(--border);
    border-radius: 10px;
    overflow: hidden;
    margin-top: 8px;
}

#related_order_result .pick-item {
    display: flex;
    justify-content: space-between;
    align-items: center;
    gap: 8px;
    padding: 10px 12px;
    border-bottom: 1px solid var(--border);
    font-size: 13px;
}

#related_order_result .pick-item:last-child { border-bottom: none; }