/* RSWT Inventory System Stylesheet */

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

:root {
    --primary-color: #2563eb;
    --secondary-color: #64748b;
    --success-color: #10b981;
    --danger-color: #ef4444;
    --warning-color: #f59e0b;
    --info-color: #06b6d4;
    --light-bg: #f8fafc;
    --border-color: #e2e8f0;
    --text-color: #334155;
    --text-muted: #64748b;
}

body {
    font-family: -apple-system, BlinkMacSystemFont, 'Segoe UI', Roboto, Oxygen, Ubuntu, Cantarell, sans-serif;
    line-height: 1.6;
    color: var(--text-color);
    background-color: var(--light-bg);
}

/* Navbar */
.navbar {
    background: linear-gradient(135deg, #1e3a8a 0%, #2563eb 100%);
    color: white;
    padding: 0;
    box-shadow: 0 2px 4px rgba(0,0,0,0.1);
}

.nav-container {
    max-width: 1400px;
    margin: 0 auto;
    display: flex;
    justify-content: space-between;
    align-items: center;
    padding: 0 20px;
}

.nav-brand h1 {
    font-size: 1.5rem;
    font-weight: 600;
}

.nav-menu {
    list-style: none;
    display: flex;
    gap: 5px;
}

.nav-menu li {
    position: relative;
}

.nav-menu a {
    color: white;
    text-decoration: none;
    padding: 1.2rem 1rem;
    display: block;
    transition: background 0.3s;
}

.nav-menu a:hover {
    background: rgba(255,255,255,0.1);
}

.dropdown-content {
    display: none;
    position: absolute;
    background: white;
    min-width: 200px;
    box-shadow: 0 4px 6px rgba(0,0,0,0.1);
    z-index: 1000;
    border-radius: 4px;
    overflow: hidden;
}

.dropdown-content a {
    color: var(--text-color);
    padding: 12px 16px;
    border-bottom: 1px solid var(--border-color);
}

.dropdown-content a:hover {
    background: var(--light-bg);
}

.dropdown:hover .dropdown-content {
    display: block;
}

.nav-user {
    display: flex;
    align-items: center;
    gap: 15px;
}

/* Container */
.container {
    max-width: 1400px;
    margin: 0 auto;
    padding: 30px 20px;
    min-height: calc(100vh - 120px);
}

/* Buttons */
.btn {
    padding: 10px 20px;
    border: none;
    border-radius: 6px;
    cursor: pointer;
    font-size: 14px;
    font-weight: 500;
    text-decoration: none;
    display: inline-block;
    transition: all 0.3s;
}

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

.btn-primary:hover {
    background: #1d4ed8;
    transform: translateY(-1px);
}

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

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

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

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

.btn-small {
    padding: 6px 12px;
    font-size: 13px;
}

.btn-block {
    width: 100%;
    text-align: center;
}

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

.form-group label {
    display: block;
    margin-bottom: 5px;
    font-weight: 500;
    color: var(--text-color);
}

.form-group input,
.form-group select,
.form-group textarea {
    width: 100%;
    padding: 10px;
    border: 1px solid var(--border-color);
    border-radius: 6px;
    font-size: 14px;
    font-family: inherit;
}

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

.form-row {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(250px, 1fr));
    gap: 20px;
}

/* Tables */
.table {
    width: 100%;
    background: white;
    border-radius: 8px;
    overflow: hidden;
    box-shadow: 0 1px 3px rgba(0,0,0,0.1);
}

.table thead {
    background: var(--light-bg);
}

.table th {
    padding: 12px;
    text-align: left;
    font-weight: 600;
    color: var(--text-color);
    border-bottom: 2px solid var(--border-color);
}

.table td {
    padding: 12px;
    border-bottom: 1px solid var(--border-color);
}

.table tbody tr:hover {
    background: var(--light-bg);
}

.table tr.warning {
    background: rgba(245, 158, 11, 0.1);
}

.table tr.danger {
    background: rgba(239, 68, 68, 0.1);
}

/* Dashboard */
.dashboard h1 {
    margin-bottom: 30px;
    color: var(--text-color);
}

.stats-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(200px, 1fr));
    gap: 20px;
    margin-bottom: 40px;
}

.stat-card {
    background: white;
    padding: 25px;
    border-radius: 8px;
    box-shadow: 0 1px 3px rgba(0,0,0,0.1);
    text-align: center;
    transition: transform 0.3s;
}

.stat-card:hover {
    transform: translateY(-5px);
    box-shadow: 0 4px 6px rgba(0,0,0,0.15);
}

.stat-card.warning {
    background: linear-gradient(135deg, #fef3c7 0%, #fde68a 100%);
}

.stat-icon {
    font-size: 2.5rem;
    margin-bottom: 10px;
}

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

.stat-label {
    color: var(--text-muted);
    font-size: 0.9rem;
    margin-top: 5px;
}

.dashboard-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(500px, 1fr));
    gap: 30px;
    margin-bottom: 40px;
}

.dashboard-section {
    background: white;
    padding: 25px;
    border-radius: 8px;
    box-shadow: 0 1px 3px rgba(0,0,0,0.1);
}

.dashboard-section h2 {
    margin-bottom: 20px;
    font-size: 1.3rem;
    color: var(--text-color);
}

.quick-actions {
    background: white;
    padding: 25px;
    border-radius: 8px;
    box-shadow: 0 1px 3px rgba(0,0,0,0.1);
}

.action-buttons {
    display: flex;
    flex-wrap: wrap;
    gap: 15px;
    margin-top: 20px;
}

/* Alerts */
.alert {
    padding: 15px 20px;
    border-radius: 6px;
    margin-bottom: 20px;
}

.alert-success {
    background: #d1fae5;
    color: #065f46;
    border-left: 4px solid var(--success-color);
}

.alert-danger {
    background: #fee2e2;
    color: #991b1b;
    border-left: 4px solid var(--danger-color);
}

.alert-warning {
    background: #fef3c7;
    color: #92400e;
    border-left: 4px solid var(--warning-color);
}

.alert-info {
    background: #cffafe;
    color: #164e63;
    border-left: 4px solid var(--info-color);
}

/* Login Page */
.login-page {
    display: flex;
    align-items: center;
    justify-content: center;
    min-height: 100vh;
    background: linear-gradient(135deg, #1e3a8a 0%, #2563eb 100%);
}

.login-container {
    width: 100%;
    max-width: 450px;
    padding: 20px;
}

.login-box {
    background: white;
    border-radius: 12px;
    padding: 40px;
    box-shadow: 0 10px 25px rgba(0,0,0,0.2);
}

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

.login-header h1 {
    color: var(--primary-color);
    font-size: 1.8rem;
    margin-bottom: 5px;
}

.login-header h2 {
    color: var(--text-muted);
    font-size: 1rem;
    font-weight: 400;
}

.login-footer {
    margin-top: 20px;
    text-align: center;
    color: var(--text-muted);
    font-size: 0.85rem;
}

/* Footer */
.footer {
    background: white;
    border-top: 1px solid var(--border-color);
    padding: 20px 0;
    text-align: center;
    color: var(--text-muted);
    font-size: 0.9rem;
}

/* Utilities */
.text-muted {
    color: var(--text-muted);
}

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

.mt-20 {
    margin-top: 20px;
}

.mb-20 {
    margin-bottom: 20px;
}

/* Responsive */
@media (max-width: 768px) {
    .nav-container {
        flex-direction: column;
        padding: 10px;
    }
    
    .nav-menu {
        flex-direction: column;
        width: 100%;
    }
    
    .stats-grid {
        grid-template-columns: 1fr;
    }
    
    .dashboard-grid {
        grid-template-columns: 1fr;
    }
    
    .form-row {
        grid-template-columns: 1fr;
    }
}

/* ── Additional improvements ────────────────────────────────────────── */

/* btn-lg */
.btn-lg {
    padding: 12px 28px;
    font-size: 16px;
}

/* Active nav link highlight */
.nav-menu a.active-page {
    background: rgba(255,255,255,0.15);
    border-bottom: 3px solid white;
}

/* Medicine search result hover */
.med-search-item:hover,
.stock-search-item:hover {
    background: #f0f9ff !important;
}

/* Search input with icon clearance */
input[type="text"]::placeholder { color: #94a3b8; }

/* Table footer row */
.table tfoot td {
    padding: 12px;
    border-top: 2px solid var(--border-color);
    background: var(--light-bg);
}

/* Expiry badge pill */
.expiry-badge {
    display: inline-block;
    padding: 2px 8px;
    border-radius: 12px;
    font-size: 12px;
    font-weight: 600;
}

/* Stock info panel improvements */
#stock_info, #batch_info {
    border-left: 4px solid var(--primary-color);
}

/* Print styles */
@media print {
    .navbar, .quick-actions, .no-print { display: none !important; }
    body { background: white; }
    .container { padding: 10px; }
    .table th { background: #e2e8f0 !important; print-color-adjust: exact; }
}

/* Responsive table overflow */
.table-responsive { overflow-x: auto; }