/* Gen-X POS Admin Panel Styles */
:root {
    --primary: #3B82F6;
    --primary-dark: #2563EB;
    --success: #10B981;
    --warning: #F59E0B;
    --danger: #EF4444;
    --dark: #0F172A;
    --dark-light: #1E293B;
    --gray: #64748B;
    --gray-light: #94A3B8;
    --light: #F1F5F9;
    --white: #FFFFFF;
}

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

body {
    font-family: -apple-system, BlinkMacSystemFont, 'Segoe UI', Roboto, sans-serif;
    background: var(--dark);
    color: var(--light);
    min-height: 100vh;
}

/* Login Page */
.login-page {
    display: flex;
    align-items: center;
    justify-content: center;
    min-height: 100vh;
    background: linear-gradient(135deg, var(--dark) 0%, var(--dark-light) 100%);
}

.login-container {
    width: 100%;
    max-width: 400px;
    padding: 20px;
}

.login-box {
    background: var(--dark-light);
    border-radius: 16px;
    padding: 40px;
    box-shadow: 0 20px 60px rgba(0,0,0,0.3);
}

.login-header {
    text-align: center;
    margin-bottom: 30px;
}

.login-header h1 {
    font-size: 28px;
    margin-bottom: 8px;
}

.login-header p {
    color: var(--gray-light);
}

.form-group {
    margin-bottom: 20px;
}

.form-group label {
    display: block;
    margin-bottom: 8px;
    color: var(--gray-light);
    font-size: 14px;
}

.form-group input {
    width: 100%;
    padding: 14px 16px;
    border: 1px solid var(--gray);
    border-radius: 8px;
    background: var(--dark);
    color: var(--light);
    font-size: 16px;
    transition: border-color 0.2s;
}

.form-group input:focus {
    outline: none;
    border-color: var(--primary);
}

.error-message {
    color: var(--danger);
    font-size: 14px;
    margin-bottom: 15px;
    min-height: 20px;
}

.login-footer {
    text-align: center;
    margin-top: 20px;
    color: var(--gray);
    font-size: 12px;
}

/* Buttons */
.btn {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    gap: 8px;
    padding: 12px 24px;
    border: none;
    border-radius: 8px;
    font-size: 15px;
    font-weight: 600;
    cursor: pointer;
    transition: all 0.2s;
}

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

.btn-success { background: var(--success); color: white; }
.btn-success:hover { opacity: 0.9; }

.btn-outline { background: transparent; border: 1px solid var(--gray); color: var(--light); }
.btn-outline:hover { border-color: var(--primary); color: var(--primary); }

.btn-full { width: 100%; }
.btn-sm { padding: 8px 16px; font-size: 13px; }
.btn-large { padding: 16px 32px; font-size: 18px; }

.btn:disabled { opacity: 0.6; cursor: not-allowed; }

/* App Layout */
.app-container {
    display: flex;
    min-height: 100vh;
}

/* Sidebar */
.sidebar {
    width: 250px;
    background: var(--dark-light);
    display: flex;
    flex-direction: column;
    position: fixed;
    height: 100vh;
    left: 0;
    top: 0;
}

.sidebar-header {
    padding: 20px;
    border-bottom: 1px solid var(--dark);
}

.sidebar-header h2 {
    font-size: 20px;
}

.nav-menu {
    list-style: none;
    padding: 10px 0;
    flex: 1;
}

.nav-menu li a {
    display: block;
    padding: 14px 20px;
    color: var(--gray-light);
    text-decoration: none;
    transition: all 0.2s;
}

.nav-menu li a:hover,
.nav-menu li a.active {
    background: var(--dark);
    color: var(--light);
    border-left: 3px solid var(--primary);
}

.sidebar-footer {
    padding: 20px;
    border-top: 1px solid var(--dark);
}

/* Main Content */
.main-content {
    flex: 1;
    margin-left: 250px;
    min-height: 100vh;
}

.top-bar {
    background: var(--dark-light);
    padding: 20px 30px;
    display: flex;
    justify-content: space-between;
    align-items: center;
    border-bottom: 1px solid var(--dark);
}

.top-bar h1 {
    font-size: 24px;
}

.user-info {
    display: flex;
    align-items: center;
    gap: 10px;
}

.badge {
    background: var(--primary);
    padding: 4px 12px;
    border-radius: 20px;
    font-size: 12px;
}

.content {
    padding: 30px;
}

/* Stats Grid */
.stats-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(200px, 1fr));
    gap: 20px;
    margin-bottom: 30px;
}

.stat-card {
    background: var(--dark-light);
    border-radius: 12px;
    padding: 24px;
    display: flex;
    align-items: center;
    gap: 16px;
}

.stat-icon {
    font-size: 36px;
}

.stat-info h3 {
    font-size: 28px;
    margin-bottom: 4px;
}

.stat-info p {
    color: var(--gray-light);
    font-size: 14px;
}

/* Quick Actions */
.quick-actions {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(150px, 1fr));
    gap: 15px;
}

.action-card {
    background: var(--dark-light);
    border-radius: 12px;
    padding: 24px;
    text-align: center;
    text-decoration: none;
    color: var(--light);
    transition: all 0.2s;
}

.action-card:hover {
    background: var(--primary);
    transform: translateY(-2px);
}

.action-icon {
    font-size: 32px;
    display: block;
    margin-bottom: 10px;
}

/* Section */
.section {
    margin-bottom: 30px;
}

.section h2 {
    margin-bottom: 15px;
    font-size: 18px;
}

/* Tables */
.table-container {
    background: var(--dark-light);
    border-radius: 12px;
    overflow: hidden;
}

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

th, td {
    padding: 14px 16px;
    text-align: left;
}

th {
    background: var(--dark);
    font-weight: 600;
    color: var(--gray-light);
}

tr:not(:last-child) td {
    border-bottom: 1px solid var(--dark);
}

/* POS Layout */
.pos-container {
    display: grid;
    grid-template-columns: 1fr 380px;
    gap: 20px;
    padding: 20px;
    height: calc(100vh - 80px);
}

.products-section {
    display: flex;
    flex-direction: column;
}

.search-bar {
    display: flex;
    gap: 10px;
    margin-bottom: 15px;
}

.search-bar input,
.search-bar select {
    padding: 12px 16px;
    border: 1px solid var(--gray);
    border-radius: 8px;
    background: var(--dark-light);
    color: var(--light);
    font-size: 14px;
}

.search-bar input {
    flex: 1;
}

.products-grid {
    display: grid;
    grid-template-columns: repeat(auto-fill, minmax(150px, 1fr));
    gap: 12px;
    overflow-y: auto;
    flex: 1;
}

.product-card {
    background: var(--dark-light);
    border-radius: 10px;
    padding: 16px;
    cursor: pointer;
    transition: all 0.2s;
}

.product-card:hover {
    background: var(--primary);
    transform: scale(1.02);
}

.product-name {
    font-weight: 600;
    margin-bottom: 8px;
}

.product-price {
    color: var(--success);
    font-weight: 600;
}

.product-stock {
    font-size: 12px;
    color: var(--gray-light);
    margin-top: 4px;
}

/* Cart */
.cart-section {
    background: var(--dark-light);
    border-radius: 12px;
    display: flex;
    flex-direction: column;
    height: 100%;
}

.cart-header {
    padding: 16px;
    border-bottom: 1px solid var(--dark);
    display: flex;
    justify-content: space-between;
    align-items: center;
}

.cart-items {
    flex: 1;
    overflow-y: auto;
    padding: 10px;
}

.empty-cart {
    text-align: center;
    color: var(--gray);
    padding: 40px;
}

.cart-item {
    background: var(--dark);
    border-radius: 8px;
    padding: 12px;
    margin-bottom: 8px;
    display: flex;
    justify-content: space-between;
    align-items: center;
}

.item-info {
    flex: 1;
}

.item-name {
    display: block;
    font-weight: 500;
}

.item-price {
    color: var(--success);
    font-size: 14px;
}

.item-qty {
    display: flex;
    align-items: center;
    gap: 8px;
}

.item-qty button {
    width: 28px;
    height: 28px;
    border: none;
    border-radius: 6px;
    background: var(--dark-light);
    color: var(--light);
    cursor: pointer;
}

.cart-summary {
    padding: 16px;
    border-top: 1px solid var(--dark);
}

.summary-row {
    display: flex;
    justify-content: space-between;
    padding: 6px 0;
    color: var(--gray-light);
}

.summary-row.total {
    font-size: 20px;
    font-weight: 700;
    color: var(--light);
    border-top: 1px solid var(--dark);
    padding-top: 12px;
    margin-top: 8px;
}

.payment-buttons {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 10px;
    padding: 16px;
}

/* Modal */
.modal {
    display: none;
    position: fixed;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    background: rgba(0,0,0,0.8);
    justify-content: center;
    align-items: center;
    z-index: 1000;
}

.modal.active {
    display: flex;
}

.modal-content {
    background: var(--dark-light);
    border-radius: 16px;
    width: 90%;
    max-width: 500px;
    max-height: 90vh;
    overflow-y: auto;
}

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

.close-btn {
    background: none;
    border: none;
    color: var(--gray);
    font-size: 28px;
    cursor: pointer;
}

.modal-footer {
    padding: 20px;
    border-top: 1px solid var(--dark);
    display: flex;
    gap: 10px;
    justify-content: flex-end;
}

/* Receipt */
.receipt {
    padding: 20px;
    text-align: center;
}

.receipt h3 {
    font-size: 20px;
    margin-bottom: 10px;
}

.receipt hr {
    border: none;
    border-top: 1px dashed var(--gray);
    margin: 15px 0;
}

.receipt-item {
    display: flex;
    justify-content: space-between;
    padding: 5px 0;
}

.receipt-total {
    display: flex;
    justify-content: space-between;
    padding: 5px 0;
}

.receipt-total.grand {
    font-size: 18px;
    font-weight: 700;
}

.thank-you {
    margin-top: 15px;
    color: var(--success);
}

/* Utilities */
.loading {
    text-align: center;
    color: var(--gray);
    padding: 40px;
}

.error {
    color: var(--danger);
    text-align: center;
    padding: 20px;
}

.no-results {
    text-align: center;
    color: var(--gray);
    padding: 40px;
}

/* Mobile Responsive */
@media (max-width: 768px) {
    .sidebar {
        width: 100%;
        height: auto;
        position: relative;
    }
    
    .main-content {
        margin-left: 0;
    }
    
    .pos-container {
        grid-template-columns: 1fr;
    }
    
    .stats-grid {
        grid-template-columns: 1fr 1fr;
    }
}