/* ============================================
   Frozen Factory ERP - Industrial Theme
   Navy + Amber Industrial Design
   ============================================ */

:root {
    --primary: #f59e0b;
    --primary-dark: #d97706;
    --secondary: #0f172a;
    --secondary-light: #1e293b;
    --bg: #f1f5f9;
    --card-bg: #ffffff;
    --text: #0f172a;
    --text-muted: #64748b;
    --border: #e2e8f0;
    --success: #10b981;
    --warning: #f59e0b;
    --danger: #ef4444;
    --info: #3b82f6;
    --shadow: 0 1px 3px rgba(0,0,0,0.1);
    --shadow-lg: 0 10px 30px rgba(0,0,0,0.15);
}

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

body {
    font-family: 'Cairo', sans-serif;
    background: var(--bg);
    color: var(--text);
    line-height: 1.6;
    font-size: 14px;
}

.app-layout {
    display: grid;
    grid-template-columns: 260px 1fr;
    min-height: 100vh;
}

/* ============================================
   SIDEBAR
   ============================================ */
.sidebar {
    background: linear-gradient(180deg, #0f172a 0%, #1e293b 100%);
    color: white;
    padding: 0;
    position: fixed;
    width: 260px;
    height: 100vh;
    overflow-y: auto;
    z-index: 100;
}

.sidebar-header {
    padding: 20px 16px;
    border-bottom: 1px solid rgba(255,255,255,0.1);
    display: flex;
    align-items: center;
    gap: 10px;
}

.sidebar-header .logo {
    font-size: 1.8rem;
}

.sidebar-header h2 {
    font-size: 1rem;
    font-weight: 700;
    margin: 0;
}

.sidebar-header small {
    color: #94a3b8;
    font-size: 0.7rem;
}

.sidebar-nav {
    padding: 12px 0;
}

.sidebar-nav a {
    display: flex;
    align-items: center;
    gap: 12px;
    padding: 11px 18px;
    color: #cbd5e1;
    text-decoration: none;
    font-size: 0.88rem;
    font-weight: 500;
    transition: all 0.2s;
    border-right: 3px solid transparent;
    position: relative;
}

.sidebar-nav a:hover {
    background: rgba(245,158,11,0.1);
    color: #f59e0b;
}

.sidebar-nav a.active {
    background: rgba(245,158,11,0.15);
    color: #f59e0b;
    border-right-color: #f59e0b;
}

.sidebar-nav a i {
    width: 20px;
    text-align: center;
}

.sidebar-nav .nav-section {
    padding: 14px 18px 6px;
    color: #64748b;
    font-size: 0.7rem;
    font-weight: 700;
    text-transform: uppercase;
    letter-spacing: 0.5px;
}

.sidebar-nav .nav-badge {
    margin-right: auto;
    background: #ef4444;
    color: white;
    font-size: 0.65rem;
    padding: 1px 7px;
    border-radius: 8px;
    font-weight: 700;
}

/* ============================================
   MAIN CONTENT
   ============================================ */
.main-content {
    grid-column: 2;
    padding: 0;
}

.top-bar {
    background: white;
    padding: 14px 24px;
    display: flex;
    justify-content: space-between;
    align-items: center;
    border-bottom: 1px solid var(--border);
    position: sticky;
    top: 0;
    z-index: 50;
    box-shadow: var(--shadow);
}

.top-bar h1 {
    font-size: 1.3rem;
    margin: 0;
    color: var(--secondary);
}

.top-bar-actions {
    display: flex;
    align-items: center;
    gap: 12px;
}

.lang-toggle, .logout-btn {
    background: var(--bg);
    border: 1px solid var(--border);
    padding: 6px 12px;
    border-radius: 6px;
    cursor: pointer;
    font-size: 0.85rem;
    font-weight: 600;
    transition: all 0.2s;
    font-family: inherit;
}

.lang-toggle:hover, .logout-btn:hover {
    background: var(--primary);
    color: white;
    border-color: var(--primary);
}

.content-area {
    padding: 24px;
}

.page-title {
    font-size: 1.5rem;
    font-weight: 700;
    margin-bottom: 20px;
    color: var(--secondary);
    display: flex;
    align-items: center;
    gap: 10px;
}

/* ============================================
   CARDS & STATS
   ============================================ */
.card {
    background: var(--card-bg);
    border-radius: 12px;
    padding: 20px;
    box-shadow: var(--shadow);
    margin-bottom: 20px;
    border: 1px solid var(--border);
}

.card h3 {
    font-size: 1.05rem;
    margin-bottom: 14px;
    color: var(--secondary);
    display: flex;
    align-items: center;
    gap: 8px;
}

.kpi-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(200px, 1fr));
    gap: 16px;
    margin-bottom: 24px;
}

.kpi-card {
    background: var(--card-bg);
    border-radius: 12px;
    padding: 20px;
    border-top: 4px solid var(--primary);
    box-shadow: var(--shadow);
    transition: transform 0.2s;
}

.kpi-card:hover { transform: translateY(-2px); }

.kpi-card .kpi-label {
    color: var(--text-muted);
    font-size: 0.8rem;
    margin-bottom: 6px;
    text-transform: uppercase;
    letter-spacing: 0.5px;
}

.kpi-card .kpi-value {
    font-size: 1.8rem;
    font-weight: 900;
    color: var(--secondary);
}

.kpi-card .kpi-icon {
    float: right;
    font-size: 2rem;
    color: var(--primary);
    opacity: 0.6;
}

.kpi-card.success { border-top-color: var(--success); }
.kpi-card.success .kpi-icon { color: var(--success); }
.kpi-card.warning { border-top-color: var(--warning); }
.kpi-card.warning .kpi-icon { color: var(--warning); }
.kpi-card.danger { border-top-color: var(--danger); }
.kpi-card.danger .kpi-icon { color: var(--danger); }
.kpi-card.info { border-top-color: var(--info); }
.kpi-card.info .kpi-icon { color: var(--info); }

/* ============================================
   TABLES
   ============================================ */
table {
    width: 100%;
    border-collapse: collapse;
    font-size: 0.88rem;
}

table th {
    background: #f8fafc;
    padding: 12px;
    text-align: right;
    font-weight: 700;
    color: var(--secondary);
    border-bottom: 2px solid var(--border);
    font-size: 0.8rem;
    text-transform: uppercase;
}

table td {
    padding: 11px 12px;
    border-bottom: 1px solid var(--border);
    vertical-align: middle;
}

table tr:hover { background: #f8fafc; }

.empty-state {
    text-align: center;
    padding: 40px 20px;
    color: var(--text-muted);
}

.empty-state i { font-size: 3rem; opacity: 0.3; margin-bottom: 12px; }

/* ============================================
   FORMS
   ============================================ */
.form-row {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 14px;
    margin-bottom: 14px;
}

.form-group {
    margin-bottom: 14px;
}

.form-group label {
    display: block;
    margin-bottom: 6px;
    font-weight: 600;
    color: var(--secondary);
    font-size: 0.85rem;
}

.form-group input, .form-group select, .form-group textarea {
    width: 100%;
    padding: 9px 12px;
    border: 1px solid var(--border);
    border-radius: 8px;
    font-size: 0.9rem;
    font-family: inherit;
    transition: border 0.2s;
}

.form-group input:focus, .form-group select:focus, .form-group textarea:focus {
    outline: none;
    border-color: var(--primary);
    box-shadow: 0 0 0 3px rgba(245,158,11,0.1);
}

/* ============================================
   BUTTONS
   ============================================ */
.btn {
    display: inline-flex;
    align-items: center;
    gap: 6px;
    padding: 8px 16px;
    border: none;
    border-radius: 8px;
    font-size: 0.88rem;
    font-weight: 600;
    cursor: pointer;
    transition: all 0.2s;
    font-family: inherit;
    text-decoration: none;
}

.btn:hover { transform: translateY(-1px); }

.btn-primary { background: var(--primary); color: white; }
.btn-primary:hover { background: var(--primary-dark); }

.btn-success { background: var(--success); color: white; }
.btn-danger { background: var(--danger); color: white; }
.btn-warning { background: var(--warning); color: white; }
.btn-info { background: var(--info); color: white; }
.btn-secondary { background: var(--bg); color: var(--text); border: 1px solid var(--border); }
.btn-secondary:hover { background: var(--border); }

.btn-sm { padding: 5px 10px; font-size: 0.78rem; }

/* ============================================
   ALERTS & BADGES
   ============================================ */
.alert {
    padding: 14px 18px;
    border-radius: 10px;
    margin-bottom: 18px;
    border-right: 4px solid;
    display: flex;
    align-items: center;
    gap: 10px;
}

.alert-success { background: #d1fae5; color: #065f46; border-color: var(--success); }
.alert-warning { background: #fef3c7; color: #92400e; border-color: var(--warning); }
.alert-danger { background: #fee2e2; color: #991b1b; border-color: var(--danger); }
.alert-info { background: #dbeafe; color: #1e40af; border-color: var(--info); }

.status-badge {
    display: inline-block;
    padding: 3px 10px;
    border-radius: 12px;
    font-size: 0.75rem;
    font-weight: 600;
    background: #e2e8f0;
    color: var(--text);
}

.status-badge.success { background: #d1fae5; color: #065f46; }
.status-badge.warning { background: #fef3c7; color: #92400e; }
.status-badge.danger { background: #fee2e2; color: #991b1b; }
.status-badge.info { background: #dbeafe; color: #1e40af; }

/* ============================================
   LAYOUT
   ============================================ */
.grid-2 { display: grid; grid-template-columns: 1fr 1fr; gap: 16px; }
.grid-3 { display: grid; grid-template-columns: 1fr 1fr 1fr; gap: 16px; }
.grid-4 { display: grid; grid-template-columns: repeat(4, 1fr); gap: 16px; }

.text-center { text-align: center; }
.text-muted { color: var(--text-muted); }
.text-success { color: var(--success); }
.text-danger { color: var(--danger); }
.text-warning { color: var(--warning); }

.mb-2 { margin-bottom: 12px; }
.mb-3 { margin-bottom: 18px; }
.mt-2 { margin-top: 12px; }

.flex { display: flex; }
.flex-between { display: flex; justify-content: space-between; align-items: center; }
.flex-gap { display: flex; gap: 8px; }

@keyframes slideIn {
    from { transform: translateX(100%); opacity: 0; }
    to { transform: translateX(0); opacity: 1; }
}

@keyframes fadeIn {
    from { opacity: 0; }
    to { opacity: 1; }
}

.content-area { animation: fadeIn 0.3s; }

/* Mobile */
@media (max-width: 768px) {
    .app-layout { grid-template-columns: 1fr; }
    .sidebar { position: relative; width: 100%; height: auto; }
    .main-content { grid-column: 1; }
    .form-row { grid-template-columns: 1fr; }
    .grid-2, .grid-3, .grid-4 { grid-template-columns: 1fr; }
    .kpi-grid { grid-template-columns: 1fr 1fr; }
}

@media print {
    .sidebar, .top-bar, .btn { display: none !important; }
    .main-content { grid-column: 1; }
    .content-area { padding: 0; }
}