/* Pharmacy Management System - Mobile First CSS */
* {
    margin: 0;
    padding: 0;
    box-sizing: border-box;
}

:root {
    --primary-color: #2563eb;
    --secondary-color: #1e40af;
    --success-color: #059669;
    --danger-color: #dc2626;
    --warning-color: #d97706;
    --info-color: #0891b2;
    --light-color: #f8fafc;
    --dark-color: #1e293b;
    --border-radius: 8px;
    --shadow: 0 4px 6px -1px rgba(0, 0, 0, 0.1);
    --transition: all 0.3s ease;
}

body {
    font-family: 'Segoe UI', Tahoma, Geneva, Verdana, sans-serif;
    line-height: 1.6;
    color: var(--dark-color);
    background-color: #f1f5f9;
    font-size: 14px;
}

/* Header */
.header {
    background: linear-gradient(135deg, var(--primary-color), var(--secondary-color));
    color: white;
    padding: 1rem;
    position: fixed;
    top: 0;
    left: 0;
    right: 0;
    z-index: 1000;
    box-shadow: var(--shadow);
}

.header-content {
    display: flex;
    justify-content: space-between;
    align-items: center;
    max-width: 1200px;
    margin: 0 auto;
}

.logo {
    font-size: 1.2rem;
    font-weight: bold;
}

.user-menu {
    display: flex;
    align-items: center;
    gap: 1rem;
    font-size: 0.8rem;
}

.btn {
    padding: 0.6rem 1rem;
    border: none;
    border-radius: var(--border-radius);
    cursor: pointer;
    text-decoration: none;
    display: inline-block;
    font-size: 0.8rem;
    font-weight: 500;
    transition: var(--transition);
    text-align: center;
    min-height: 44px;
    min-width: 44px;
}

    padding: 0.4rem 0.8rem;
    font-size: 0.75rem;
    min-height: 36px;
    min-width: 36px;
.btn-primary {
    background-color: var(--primary-color);
    color: white;
}

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

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

.btn-success:hover {
    background-color: #047857;
}

.btn-danger {
    background-color: var(--danger-color);
    color: white;
}

.btn-danger:hover {
    background-color: #b91c1c;
}

.btn-warning {
    background-color: var(--warning-color);
    color: white;
}

.btn-info {
    background-color: var(--info-color);
    color: white;
}

.btn-light {
    background-color: var(--light-color);
    color: var(--dark-color);
    border: 1px solid #e2e8f0;
}

/* Main Layout */
.main-container {
    margin-top: 80px;
    padding: 1rem;
    max-width: 1200px;
    margin-left: auto;
    margin-right: auto;
}

/* Sidebar Navigation */
.sidebar {
    position: fixed;
    left: -300px;
    top: 80px;
    width: 280px;
    height: calc(100vh - 80px);
    background: white;
    box-shadow: var(--shadow);
    transition: var(--transition);
    z-index: 999;
    overflow-y: auto;
}

.sidebar.active {
    left: 0;
}

.nav-menu {
    list-style: none;
    padding: 1rem 0;
}

.nav-item {
    margin-bottom: 0.5rem;
}

.nav-link {
    display: flex;
    align-items: center;
    padding: 0.75rem 1.5rem;
    color: var(--dark-color);
    text-decoration: none;
    transition: var(--transition);
    min-height: 48px;
}

.nav-link:hover {
    background-color: #e2e8f0;
    color: var(--primary-color);
}

.nav-link.active {
    background-color: var(--primary-color);
    color: white;
}

.nav-icon {
    width: 20px;
    height: 20px;
    margin-right: 0.75rem;
}

/* Cards */
.card {
    background: white;
    border-radius: var(--border-radius);
    box-shadow: var(--shadow);
    margin-bottom: 1.5rem;
    overflow: hidden;
}

.card-header {
    padding: 1.5rem;
    border-bottom: 1px solid #e2e8f0;
    background-color: #f8fafc;
    display: flex;
    justify-content: space-between;
    align-items: center;
    flex-wrap: wrap;
    gap: 1rem;
}

.card-title {
    font-size: 1.25rem;
    font-weight: 600;
    margin-bottom: 0;
}

.card-body {
    padding: 1.5rem;
}

/* Statistics Cards */
.stats-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(200px, 1fr));
    gap: 1rem;
    margin-bottom: 2rem;
}

.stat-card {
    background: white;
    padding: 1.5rem;
    border-radius: var(--border-radius);
    box-shadow: var(--shadow);
    text-align: center;
    transition: var(--transition);
}

.stat-card:hover {
    transform: translateY(-2px);
    box-shadow: 0 10px 25px -5px rgba(0, 0, 0, 0.1);
}

.stat-number {
    font-size: 2rem;
    font-weight: bold;
    color: var(--primary-color);
}

.stat-label {
    color: #64748b;
    font-size: 0.875rem;
    margin-top: 0.5rem;
}

/* Forms */
.form-group {
    margin-bottom: 1rem;
}

.form-label {
    display: block;
    margin-bottom: 0.5rem;
    font-weight: 500;
    color: var(--dark-color);
}

.form-control {
    width: 100%;
    padding: 0.8rem;
    border: 1px solid #d1d5db;
    border-radius: var(--border-radius);
    font-size: 16px;
    transition: var(--transition);
    min-height: 44px;
}

.form-control:focus {
    outline: none;
    border-color: var(--primary-color);
    box-shadow: 0 0 0 3px rgba(37, 99, 235, 0.1);
}

.form-row {
    display: flex;
    gap: 1rem;
    flex-wrap: wrap;
}

.form-col {
    flex: 1;
    min-width: 200px;
}

/* Tables */
.table-container {
    overflow-x: auto;
    margin-top: 1rem;
    -webkit-overflow-scrolling: touch;
}

.table {
    width: 100%;
    border-collapse: collapse;
    background: white;
    border-radius: var(--border-radius);
    overflow: hidden;
    min-width: 600px;
}

.table th,
.table td {
    padding: 0.8rem 0.6rem;
    text-align: left;
    border-bottom: 1px solid #e2e8f0;
    font-size: 0.85rem;
}

.table th {
    background-color: #f8fafc;
    font-weight: 600;
    color: var(--dark-color);
    white-space: nowrap;
}

.table tbody tr:hover {
    background-color: #f8fafc;
}

/* POS System */
.pos-container {
    display: grid;
    grid-template-columns: 1fr 400px;
    gap: 1.5rem;
}

.medicine-search {
    position: relative;
}

.search-results {
    position: absolute;
    top: calc(100% + 2px);
    left: 0;
    right: 0;
    background: white;
    border: 1px solid #d1d5db;
    border-radius: 0 0 var(--border-radius) var(--border-radius);
    max-height: 300px;
    overflow-y: auto;
    z-index: 1000;
    box-shadow: var(--shadow);
}

.search-item {
    padding: 0.75rem;
    cursor: pointer;
    border-bottom: 1px solid #e2e8f0;
    transition: var(--transition);
    background: #fffbff;
    border-radius: 6px;
}

.search-item:hover {
    background-color: #f8ffd6c4;
}

.search-item.disabled {
    background-color: #fee2e2;
    cursor: not-allowed;
    opacity: 0.7;
}
.cart-items {
    max-height: 400px;
    overflow-y: auto;
    -webkit-overflow-scrolling: touch;
}

.cart-item {
    display: flex;
    justify-content: space-between;
    align-items: center;
    padding: 0.75rem;
    border-bottom: 1px solid #e2e8f0;
    gap: 0.5rem;
}

.cart-total {
    background: var(--light-color);
    padding: 1rem;
    border-radius: var(--border-radius);
    margin-top: 1rem;
}

/* Discount Types */
.discount-type-selector {
    display: flex;
    gap: 0.5rem;
    margin-bottom: 0.5rem;
}

.discount-type-btn {
    padding: 0.4rem 2rem;
    border: 1px solid #d1d5db;
    background: white;
    border-radius: var(--border-radius);
    cursor: pointer;
    font-size: 0.8rem;
    transition: var(--transition);
}

.discount-type-btn.active {
    background: var(--primary-color);
    color: white;
    border-color: var(--primary-color);
}
/* Scanner */
.scanner-container {
    position: relative;
    width: 100%;
    max-width: 400px;
    margin: 1rem auto;
}

.scanner-video {
    width: 100%;
    height: 300px;
    object-fit: cover;
    border-radius: var(--border-radius);
}

.scanner-overlay {
    position: absolute;
    top: 50%;
    left: 50%;
    transform: translate(-50%, -50%);
    width: 200px;
    height: 200px;
    border: 2px solid var(--primary-color);
    border-radius: var(--border-radius);
}

/* Print Styles */
@media print {
    body * {
        visibility: hidden;
    }
    
    .print-area, .print-area * {
        visibility: visible;
    }
    
    .print-area {
        position: absolute;
        left: 0;
        top: 0;
        width: 100%;
    }
    
    .pos-receipt {
        width: 80mm;
        font-size: 12px;
        font-family: 'Courier New', monospace;
        margin: 0;
        padding: 10px;
        background: white;
    }
    
    .receipt-header {
        text-align: center;
        margin-bottom: 10px;
        border-bottom: 1px dashed #000;
        padding-bottom: 10px;
    }
    
    .receipt-header h3 {
        margin: 0;
        font-size: 18px;
        font-weight: bold;
    }
    
    .receipt-header p {
        margin: 2px 0;
        font-size: 10px;
    }
    
    .receipt-items {
        margin: 10px 0;
    }
    
    .receipt-total {
        border-top: 1px dashed #000;
        padding-top: 10px;
        margin-top: 10px;
    }
    
    .receipt-footer {
        text-align: center;
        margin-top: 15px;
        border-top: 1px dashed #000;
        padding-top: 10px;
        font-size: 10px;
    }
    
    .qr-code {
        text-align: center;
        margin: 10px 0;
    }
    
    .qr-code p {
        font-size: 8px;
        margin: 5px 0;
    }
}
/* Alerts */
.alert {
    padding: 1rem;
    border-radius: var(--border-radius);
    margin-bottom: 1rem;
}

.alert-success {
    background-color: #d1fae5;
    border: 1px solid #a7f3d0;
    color: #065f46;
}

.alert-danger {
    background-color: #fee2e2;
    border: 1px solid #fecaca;
    color: #991b1b;
}

.alert-warning {
    background-color: #fef3c7;
    border: 1px solid #fde68a;
    color: #92400e;
}

.alert-info {
    background-color: #dbeafe;
    border: 1px solid #bfdbfe;
    color: #1e40af;
}

/* Search Box */
.search-box {
    position: relative;
    margin-bottom: 1rem;
}

.search-input {
    width: 100%;
    padding: 0.8rem 2.5rem 0.8rem 1rem;
    border: 1px solid #d1d5db;
    border-radius: var(--border-radius);
    font-size: 16px;
}

.search-btn {
    position: absolute;
    right: 0.5rem;
    top: 50%;
    transform: translateY(-50%);
    background: none;
    border: none;
    color: var(--primary-color);
    cursor: pointer;
    padding: 0.5rem;
}
/* Mobile Optimizations */
@media (max-width: 768px) {
    body {
        font-size: 16px;
    }
    
    .header {
        padding: 0.8rem;
    }
    
    .logo {
        font-size: 1rem;
    }
    
    .user-menu {
        gap: 0.5rem;
        font-size: 0.75rem;
    }
    
    .user-menu span {
        display: none;
    }
    
    .main-container {
        margin-top: 70px;
        padding: 0.8rem;
    }
    
    .sidebar {
        top: 70px;
        height: calc(100vh - 70px);
        width: 100%;
        left: -100%;
    }
    
    .pos-container {
        grid-template-columns: 1fr;
    }
    
    .pos-right {
        order: -1;
        margin-bottom: 1rem;
    }
    
    .search-results {
        position: fixed;
        top: auto;
        bottom: 0;
        left: 0;
        right: 0;
        max-height: 50vh;
        border-radius: var(--border-radius) var(--border-radius) 0 0;
        z-index: 1001;
    }
    
    .medicine-search {
        position: relative;
    }
    
    .form-row {
        flex-direction: column;
    }
    
    .form-col {
        min-width: auto;
    }
    
    .stats-grid {
        grid-template-columns: 1fr 1fr;
        gap: 0.8rem;
    }
    
    .stat-card {
        padding: 1rem;
    }
    
    .stat-number {
        font-size: 1.5rem;
    }
    
    .card-header {
        padding: 1rem;
        flex-direction: column;
        align-items: stretch;
    }
    
    .card-body {
        padding: 1rem;
    }
    
    .cart-item {
        flex-direction: column;
        align-items: stretch;
        gap: 0.5rem;
    }
    
    .cart-item > div:first-child {
        margin-bottom: 0.5rem;
    }
    
    .discount-type-selector {
        flex-wrap: wrap;
    }
    
    .btn {
        padding: 0.8rem 1rem;
        font-size: 0.85rem;
        min-height: 48px;
    }
    
    .btn-sm {
        padding: 0.6rem 0.8rem;
        font-size: 0.8rem;
        min-height: 40px;
    }
    
    .table th,
    .table td {
        padding: 0.6rem 0.4rem;
        font-size: 0.8rem;
    }
    
    .table {
        min-width: 500px;
    }
}

@media (max-width: 480px) {
    .header {
        padding: 0.6rem;
    }
    
    .main-container {
        margin-top: 65px;
        padding: 0.6rem;
    }
    
    .sidebar {
        top: 65px;
        height: calc(100vh - 65px);
    }
    
    .stats-grid {
        grid-template-columns: 1fr;
    }
    
    .card-header {
        padding: 0.8rem;
    }
    
    .card-body {
        padding: 0.8rem;
    }
    
    .form-control {
        padding: 0.7rem;
    }
    
    .btn {
        padding: 0.7rem 0.8rem;
        font-size: 0.8rem;
    }
    
    .btn-sm {
        padding: 0.5rem 0.6rem;
        font-size: 0.75rem;
        min-height: 36px;
    }
    
    .table th,
    .table td {
        padding: 0.5rem 0.3rem;
        font-size: 0.75rem;
    }
    
    .discount-type-btn {
        padding: 0.4rem 0.9rem;
        font-size: 0.75rem;
    }
}

@media (max-width: 360px) {
    .main-container {
        padding: 0.4rem;
    }
    
    .card-header {
        padding: 0.6rem;
    }
    
    .card-body {
        padding: 0.6rem;
    }
    
    .stats-grid {
        gap: 0.5rem;
    }
    
    .stat-card {
        padding: 0.8rem;
    }
    
    .stat-number {
        font-size: 1.2rem;
    }
    
    .stat-label {
        font-size: 0.75rem;
    }
    
    .form-control {
        padding: 0.6rem;
        font-size: 16px;
    }
    
    .btn {
        padding: 0.6rem 0.7rem;
        font-size: 0.75rem;
    }
    
    .btn-sm {
        padding: 0.4rem 0.5rem;
        font-size: 0.7rem;
        min-height: 32px;
    }
    
    .table {
        min-width: 400px;
    }
    
    .table th,
    .table td {
        padding: 0.4rem 0.2rem;
        font-size: 0.7rem;
    }
}

/* Login Page */
.login-container {
    min-height: 100vh;
    display: flex;
    align-items: center;
    justify-content: center;
    background: linear-gradient(135deg, var(--primary-color), var(--secondary-color));
    padding: 1rem;
}

.login-card {
    background: white;
    padding: 2rem;
    border-radius: var(--border-radius);
    box-shadow: 0 20px 25px -5px rgba(0, 0, 0, 0.1);
    width: 100%;
    max-width: 400px;
}

.login-title {
    text-align: center;
    margin-bottom: 2rem;
    color: var(--dark-color);
}

/* Utility Classes */
.text-center { text-align: center; }
.text-right { text-align: right; }
.text-success { color: var(--success-color); }
.text-danger { color: var(--danger-color); }
.text-warning { color: var(--warning-color); }
.text-primary { color: var(--primary-color); }
.text-muted { color: #64748b; }

.mb-1 { margin-bottom: 0.25rem; }
.mb-2 { margin-bottom: 0.5rem; }
.mb-3 { margin-bottom: 1rem; }
.mb-4 { margin-bottom: 1.5rem; }

.mt-1 { margin-top: 0.25rem; }
.mt-2 { margin-top: 0.5rem; }
.mt-3 { margin-top: 1rem; }
.mt-4 { margin-top: 1.5rem; }

.d-flex { display: flex; }
.d-none { display: none; }
.justify-content-between { justify-content: space-between; }
.align-items-center { align-items: center; }
.gap-1 { gap: 0.5rem; }
.gap-2 { gap: 1rem; }
.flex-wrap { flex-wrap: wrap; }

.badge {
    padding: 0.25rem 0.5rem;
    font-size: 0.75rem;
    border-radius: 0.25rem;
    font-weight: 500;
}

.badge-success {
    background-color: var(--success-color);
    color: white;
}

.badge-danger {
    background-color: var(--danger-color);
    color: white;
}

.badge-warning {
    background-color: var(--warning-color);
    color: white;
}
.badge-primary {
    background-color: var(--primary-color);
    color: white;
}

.badge-info {
    background-color: var(--info-color);
    color: white;
}

/* Touch-friendly improvements */
@media (hover: none) and (pointer: coarse) {
    .btn:hover {
        transform: none;
    }
    
    .stat-card:hover {
        transform: none;
    }
    
    .search-item:hover {
        background-color: #f8fafc;
    }
    
    .nav-link:hover {
        background-color: #e2e8f0;
    }
}