:root {
    --bg-color: #f8fafc;
    --card-bg: #ffffff;
    --text-main: #0f172a;
    --text-muted: #64748b;
    --primary: #0ea5e9; /* Mavi/Yeşil arası temiz depo teması */
    --primary-hover: #0284c7;
    --border: #e2e8f0;
    --danger: #ef4444;
    --danger-bg: #fef2f2;
    --warning: #f59e0b;
    --warning-bg: #fffbeb;
    --success: #10b981;
    --success-bg: #ecfdf5;
}

* {
    box-sizing: border-box;
    margin: 0;
    padding: 0;
    font-family: 'Inter', sans-serif;
}

body {
    background-color: var(--bg-color);
    color: var(--text-main);
    display: flex;
    height: 100vh;
    overflow: hidden;
}

/* Sidebar */
.sidebar {
    width: 250px;
    background-color: var(--card-bg);
    border-right: 1px solid var(--border);
    display: flex;
    flex-direction: column;
    z-index: 10;
}

.logo {
    padding: 20px;
    font-size: 20px;
    font-weight: 700;
    color: var(--primary);
    display: flex;
    align-items: center;
    gap: 10px;
    border-bottom: 1px solid var(--border);
}

.menu {
    padding: 20px 0;
    display: flex;
    flex-direction: column;
    gap: 5px;
}

.menu-item {
    display: flex;
    align-items: center;
    gap: 12px;
    padding: 12px 20px;
    color: var(--text-muted);
    text-decoration: none;
    font-weight: 500;
    font-size: 14px;
    transition: all 0.2s;
}

.menu-item:hover {
    background-color: #f1f5f9;
    color: var(--primary);
}

.menu-item.active {
    background-color: #f0f9ff;
    color: var(--primary);
    border-right: 3px solid var(--primary);
}

/* Main Content */
.content {
    flex: 1;
    display: flex;
    flex-direction: column;
    overflow-y: auto;
    padding: 30px;
}

.topbar {
    display: flex;
    justify-content: space-between;
    align-items: flex-start;
    margin-bottom: 30px;
}

.topbar h1 {
    font-size: 24px;
    margin-bottom: 5px;
}

.subtitle {
    color: var(--text-muted);
    font-size: 14px;
}

.search-bar {
    display: flex;
    align-items: center;
    background: var(--card-bg);
    border: 1px solid var(--border);
    border-radius: 8px;
    padding: 0 15px;
    width: 300px;
}

.search-bar svg {
    color: var(--text-muted);
}

.search-bar input {
    border: none;
    outline: none;
    padding: 12px 10px;
    width: 100%;
    font-size: 14px;
    background: transparent;
}

/* Stats */
.stats-grid {
    display: grid;
    grid-template-columns: repeat(3, 1fr);
    gap: 20px;
    margin-bottom: 30px;
}

.stat-card {
    background: var(--card-bg);
    padding: 20px;
    border-radius: 10px;
    border: 1px solid var(--border);
    box-shadow: 0 1px 3px rgba(0,0,0,0.05);
}

.stat-title {
    font-size: 13px;
    color: var(--text-muted);
    font-weight: 500;
    text-transform: uppercase;
    letter-spacing: 0.5px;
    margin-bottom: 10px;
}

.stat-value {
    font-size: 32px;
    font-weight: 700;
    color: var(--text-main);
}

.stat-card.alert .stat-value {
    color: var(--danger);
}

/* Table */
.table-container {
    background: var(--card-bg);
    border-radius: 10px;
    border: 1px solid var(--border);
    box-shadow: 0 1px 3px rgba(0,0,0,0.05);
    overflow: hidden;
}

table {
    width: 100%;
    border-collapse: collapse;
}

th, td {
    padding: 15px;
    text-align: left;
    font-size: 14px;
    border-bottom: 1px solid var(--border);
}

th {
    background-color: #f8fafc;
    color: var(--text-muted);
    font-weight: 500;
    text-transform: uppercase;
    font-size: 12px;
    letter-spacing: 0.5px;
}

tr:last-child td {
    border-bottom: none;
}

.text-center {
    text-align: center;
}

/* Status Badges */
.badge {
    padding: 4px 10px;
    border-radius: 20px;
    font-size: 12px;
    font-weight: 600;
    display: inline-block;
}

.badge-success { background: var(--success-bg); color: var(--success); }
.badge-warning { background: var(--warning-bg); color: var(--warning); }
.badge-danger { background: var(--danger-bg); color: var(--danger); }

/* Stock Controls */
.stock-control {
    display: inline-flex;
    align-items: center;
    background: #f1f5f9;
    border-radius: 6px;
    overflow: hidden;
    border: 1px solid var(--border);
}

.stock-control button {
    background: white;
    border: none;
    width: 28px;
    height: 28px;
    display: flex;
    align-items: center;
    justify-content: center;
    cursor: pointer;
    color: var(--text-main);
    transition: background 0.2s;
}

.stock-control button:hover {
    background: #e2e8f0;
}

.stock-control .val {
    min-width: 40px;
    text-align: center;
    font-weight: 600;
    font-size: 13px;
}

/* Modal */
.modal-overlay {
    position: fixed;
    top: 0; left: 0; right: 0; bottom: 0;
    background: rgba(0,0,0,0.5);
    z-index: 100;
    display: flex;
    align-items: center;
    justify-content: center;
    backdrop-filter: blur(2px);
}

.modal {
    background: white;
    width: 450px;
    border-radius: 10px;
    box-shadow: 0 10px 25px rgba(0,0,0,0.1);
    overflow: hidden;
}

.modal-header {
    padding: 20px;
    border-bottom: 1px solid var(--border);
    display: flex;
    justify-content: space-between;
    align-items: center;
}

.modal-header h2 {
    font-size: 18px;
}

.close-btn {
    background: transparent;
    border: none;
    cursor: pointer;
    color: var(--text-muted);
}

.modal-body {
    padding: 20px;
}

.form-group {
    margin-bottom: 15px;
}

.form-row {
    display: flex;
    gap: 15px;
}

.form-row .form-group {
    flex: 1;
}

label {
    display: block;
    font-size: 13px;
    margin-bottom: 6px;
    font-weight: 500;
    color: var(--text-main);
}

input {
    width: 100%;
    padding: 10px;
    border: 1px solid var(--border);
    border-radius: 6px;
    font-size: 14px;
    outline: none;
    transition: border-color 0.2s;
}

input:focus {
    border-color: var(--primary);
}

.btn {
    padding: 10px 16px;
    border-radius: 6px;
    font-size: 14px;
    font-weight: 500;
    cursor: pointer;
    border: none;
    transition: all 0.2s;
}

.btn-primary { background-color: var(--primary); color: white; }
.btn-primary:hover { background-color: var(--primary-hover); }
.w-100 { width: 100%; }

/* Print */
@media print {
    .sidebar, .search-bar, .modal-overlay, .stock-control button, th:last-child, td:last-child {
        display: none !important;
    }
    .content {
        padding: 0;
        overflow: visible;
    }
    .table-container {
        border: none;
        box-shadow: none;
    }
    table {
        border: 1px solid #ccc;
    }
    th, td {
        border: 1px solid #ccc;
        padding: 8px;
    }
}