:root {
    --sidebar-bg: #1e2a3a;
    --sidebar-hover: #2d3748;
    --sidebar-active: #3b82f6;
    --topbar-bg: #1e2a3a;
    --body-bg: #ecf0f1;
    --card-bg: #ffffff;
    --text-primary: #2c3e50;
    --text-secondary: #7f8c8d;
    --text-light: #94a3b8;
    --accent: #3b82f6;
    --success: #27ae60;
    --warning: #f39c12;
    --danger: #e74c3c;
    --info: #2980b9;
    --border: #dee2e6;
}

* { margin: 0; padding: 0; box-sizing: border-box; }

body {
    font-family: 'Segoe UI', Tahoma, Geneva, Verdana, sans-serif;
    background: var(--body-bg);
    color: var(--text-primary);
    min-height: 100vh;
}

.app-layout { display: flex; min-height: 100vh; }

.sidebar {
    width: 250px;
    background: var(--sidebar-bg);
    color: #fff;
    position: fixed;
    top: 0; left: 0; bottom: 0;
    overflow-y: auto;
    z-index: 100;
    transition: transform .3s;
}
.sidebar-brand {
    padding: 20px;
    display: flex;
    align-items: center;
    gap: 14px;
    border-bottom: 1px solid rgba(255,255,255,.08);
    background: rgba(0,0,0,.15);
}
.sidebar-brand img { width: 44px; height: auto; filter: brightness(1.1); }
.sidebar-brand h2 { font-size: 17px; font-weight: 700; letter-spacing: 1.5px; font-family: 'Segoe UI', Arial, sans-serif; }
.sidebar-brand small { display: block; font-size: 10px; color: var(--text-light); font-weight: 400; letter-spacing: .5px; margin-top: 2px; }

.sidebar-user {
    padding: 12px 20px;
    font-size: 13px;
    color: var(--text-light);
    border-bottom: 1px solid rgba(255,255,255,.1);
}

.sidebar-section { padding: 10px 0 0; }
.sidebar-section-title {
    padding: 6px 20px;
    font-size: 11px;
    text-transform: uppercase;
    letter-spacing: 1px;
    color: rgba(255,255,255,.4);
    font-weight: 600;
}
.sidebar-link {
    display: flex;
    align-items: center;
    gap: 10px;
    padding: 9px 20px;
    color: rgba(255,255,255,.8);
    text-decoration: none;
    font-size: 14px;
    transition: background .2s, color .2s;
}
.sidebar-link:hover { background: var(--sidebar-hover); color: #fff; }
.sidebar-link.active { background: var(--sidebar-active); color: #fff; font-weight: 600; }
.sidebar-link .icon { width: 20px; text-align: center; font-size: 15px; }

.topbar {
    height: 56px;
    background: var(--topbar-bg);
    display: flex;
    align-items: center;
    padding: 0 24px;
    gap: 16px;
    position: sticky;
    top: 0;
    z-index: 50;
}
.topbar-search {
    background: rgba(255,255,255,.12);
    border: none;
    border-radius: 4px;
    padding: 8px 14px;
    color: #fff;
    font-size: 14px;
    width: 280px;
}
.topbar-search::placeholder { color: rgba(255,255,255,.5); }
.topbar-nav { display: flex; gap: 16px; margin-left: auto; }
.topbar-nav a { color: rgba(255,255,255,.8); text-decoration: none; font-size: 14px; }
.topbar-nav a:hover { color: #fff; }
.menu-toggle { display: none; background: none; border: none; color: #fff; font-size: 22px; cursor: pointer; }

.main-content {
    margin-left: 250px;
    flex: 1;
    min-height: 100vh;
    display: flex;
    flex-direction: column;
}
.content-area { padding: 24px; flex: 1; }
.page-title { font-size: 22px; font-weight: 700; margin-bottom: 20px; color: var(--text-primary); }

.card {
    background: var(--card-bg);
    border-radius: 6px;
    box-shadow: 0 1px 3px rgba(0,0,0,.08);
    margin-bottom: 20px;
    overflow: hidden;
}
.card-header {
    padding: 14px 20px;
    font-size: 16px;
    font-weight: 600;
    border-bottom: 1px solid var(--border);
    display: flex;
    justify-content: space-between;
    align-items: center;
}
.card-body { padding: 16px 20px; }

.grid { display: grid; gap: 20px; }
.grid-2 { grid-template-columns: repeat(2, 1fr); }
.grid-3 { grid-template-columns: repeat(3, 1fr); }
.grid-4 { grid-template-columns: repeat(4, 1fr); }

.stat-card {
    background: var(--card-bg);
    border-radius: 6px;
    padding: 20px;
    box-shadow: 0 1px 3px rgba(0,0,0,.08);
}
.stat-card .stat-value { font-size: 28px; font-weight: 700; color: var(--accent); }
.stat-card .stat-label { font-size: 13px; color: var(--text-secondary); margin-top: 4px; }

.table-container { overflow-x: auto; }
table { width: 100%; border-collapse: collapse; font-size: 14px; }
th, td { padding: 10px 14px; text-align: left; border-bottom: 1px solid var(--border); }
th { background: #f8f9fa; font-weight: 600; color: var(--text-secondary); font-size: 12px; text-transform: uppercase; letter-spacing: .5px; }
tr:hover { background: #f8f9fa; }

.badge {
    display: inline-block;
    padding: 3px 10px;
    border-radius: 12px;
    font-size: 12px;
    font-weight: 600;
}
.badge-success { background: #d4edda; color: #155724; }
.badge-warning { background: #fff3cd; color: #856404; }
.badge-danger { background: #f8d7da; color: #721c24; }
.badge-info { background: #d1ecf1; color: #0c5460; }
.badge-secondary { background: #e2e3e5; color: #383d41; }

.btn {
    display: inline-flex;
    align-items: center;
    gap: 6px;
    padding: 8px 16px;
    border: none;
    border-radius: 4px;
    font-size: 13px;
    font-weight: 600;
    cursor: pointer;
    text-decoration: none;
    transition: opacity .2s;
}
.btn:hover { opacity: .85; }
.btn-primary { background: var(--accent); color: #fff; }
.btn-success { background: var(--success); color: #fff; }
.btn-warning { background: var(--warning); color: #fff; }
.btn-danger { background: var(--danger); color: #fff; }
.btn-secondary { background: #6c757d; color: #fff; }
.btn-sm { padding: 5px 10px; font-size: 12px; }
.btn-group { display: flex; gap: 6px; }

.form-group { margin-bottom: 16px; }
.form-group label { display: block; font-size: 13px; font-weight: 600; color: var(--text-secondary); margin-bottom: 5px; }
.form-control {
    width: 100%;
    padding: 9px 12px;
    border: 1px solid var(--border);
    border-radius: 4px;
    font-size: 14px;
    transition: border-color .2s;
}
.form-control:focus { outline: none; border-color: var(--accent); box-shadow: 0 0 0 3px rgba(52,152,219,.15); }
select.form-control { appearance: auto; }
textarea.form-control { resize: vertical; min-height: 80px; }
.form-row { display: grid; grid-template-columns: 1fr 1fr; gap: 16px; }

.alert {
    padding: 12px 16px;
    border-radius: 4px;
    margin-bottom: 16px;
    font-size: 14px;
}
.alert-success { background: #d4edda; color: #155724; border: 1px solid #c3e6cb; }
.alert-error { background: #f8d7da; color: #721c24; border: 1px solid #f5c6cb; }
.alert-warning { background: #fff3cd; color: #856404; border: 1px solid #ffeeba; }
.alert-info { background: #d1ecf1; color: #0c5460; border: 1px solid #bee5eb; }

.low-stock { color: var(--danger); font-weight: 600; }

/* Login page */
.login-wrapper {
    min-height: 100vh;
    display: flex;
    align-items: center;
    justify-content: center;
    background: linear-gradient(135deg, #2c3e50 0%, #34495e 100%);
}
.login-box {
    text-align: center;
    background: #fff;
    border-radius: 8px;
    padding: 40px;
    width: 400px;
    max-width: 90vw;
    box-shadow: 0 8px 32px rgba(0,0,0,.2);
}
.login-box h1 { text-align: center; margin-bottom: 8px; color: var(--text-primary); font-size: 22px; }
.login-box .subtitle { text-align: center; color: var(--text-secondary); font-size: 13px; margin-bottom: 28px; }
.login-box .btn { width: 100%; justify-content: center; padding: 12px; font-size: 15px; }

@media (max-width: 768px) {
    .sidebar { transform: translateX(-100%); }
    .sidebar.open { transform: translateX(0); }
    .main-content { margin-left: 0; }
    .menu-toggle { display: block; }
    .grid-2, .grid-3, .grid-4 { grid-template-columns: 1fr; }
    .form-row { grid-template-columns: 1fr; }
    .topbar-search { width: 160px; }
}

/* Batch status badges */
.badge-planned { background: #d1ecf1; color: #0c5460; }
.badge-in_progress { background: #fff3cd; color: #856404; }
.badge-completed { background: #d4edda; color: #155724; }
.badge-cancelled { background: #e2e3e5; color: #383d41; }

/* Stock movement badges */
.badge-in { background: #d4edda; color: #155724; }
.badge-out { background: #f8d7da; color: #721c24; }
.badge-adj { background: #d1ecf1; color: #0c5460; }

/* Info grid */
.info-grid { display: grid; grid-template-columns: repeat(auto-fit, minmax(200px, 1fr)); gap: 12px; }

/* Progress bar */
.progress-bar-container { background: #e9ecef; border-radius: 4px; height: 8px; overflow: hidden; min-width: 100px; }
.progress-bar { background: var(--accent); height: 100%; border-radius: 4px; transition: width .3s; }

/* Component preview in log form */
.component-preview { margin: 16px 0; padding: 16px; background: #fffbf0; border: 1px solid #f0dca0; border-radius: 6px; }
.component-preview h4 { font-size: 14px; margin-bottom: 12px; color: #856404; }

/* Chips */
.chip { display: inline-block; padding: 2px 8px; background: #e8f4fd; border-radius: 12px; font-size: 12px; color: #0c5460; margin: 2px 4px 2px 0; }

/* Data table alias */
.data-table { width: 100%; border-collapse: collapse; font-size: 14px; }
.data-table th, .data-table td { padding: 10px 14px; text-align: left; border-bottom: 1px solid var(--border); }
.data-table th { background: #f8f9fa; font-weight: 600; color: var(--text-secondary); font-size: 12px; text-transform: uppercase; letter-spacing: .5px; }
.data-table tr:hover { background: #f8f9fa; }

.form-actions { display: flex; gap: 10px; margin-top: 20px; }

/* Google login button */
.btn-google {
    display: flex;
    align-items: center;
    justify-content: center;
    width: 100%;
    padding: 10px 16px;
    background: #fff;
    border: 1px solid #dadce0;
    border-radius: 6px;
    color: #3c4043;
    font-size: 14px;
    font-weight: 500;
    text-decoration: none;
    cursor: pointer;
    transition: background .2s, box-shadow .2s;
}
.btn-google:hover {
    background: #f7f8f8;
    box-shadow: 0 1px 3px rgba(0,0,0,.15);
}