/**
 * Custom Styles
 * Purchase Order Approval System
 */

:root {
    --primary-color: #0d6efd;
    --secondary-color: #6c757d;
    --success-color: #198754;
    --danger-color: #dc3545;
    --warning-color: #ffc107;
    --info-color: #0dcaf0;
    --sidebar-width: 280px;
}

/* General Styles */
body {
    font-family: 'Segoe UI', Tahoma, Geneva, Verdana, sans-serif;
    background-color: #f8f9fa;
    overflow-x: hidden;
}

/* ========================================
   SIDEBAR STYLES
   ======================================== */

#wrapper {
    display: flex;
    width: 100%;
    min-height: 100vh;
}

#sidebar-wrapper {
    min-height: 100vh;
    width: var(--sidebar-width);
    background: linear-gradient(180deg, #0d6efd 0%, #0a58ca 100%);
    transition: margin 0.3s ease;
    position: fixed;
    left: 0;
    top: 0;
    z-index: 1000;
    display: flex;
    flex-direction: column;
}

#page-content-wrapper {
    flex: 1;
    margin-left: var(--sidebar-width);
    transition: margin 0.3s ease;
    width: 100%;
}

/* Sidebar Heading */
.sidebar-heading {
    padding: 1.5rem;
    background: rgba(0, 0, 0, 0.1);
}

.sidebar-heading h5 {
    font-weight: 600;
    letter-spacing: 0.5px;
}

/* Sidebar Menu Items */
.list-group-item-action {
    padding: 1rem 1.5rem;
    transition: all 0.2s;
    border-left: 4px solid transparent;
}

.list-group-item-action:hover {
    background: rgba(255, 255, 255, 0.1) !important;
    border-left-color: white;
    padding-left: 2rem;
}

.list-group-item-action.active,
.list-group-item-action:active {
    background: rgba(255, 255, 255, 0.15) !important;
    border-left-color: white;
}

/* Sidebar Divider */
.sidebar-divider {
    height: 1px;
    background: rgba(255, 255, 255, 0.2);
    margin: 1rem 0;
}

/* Sidebar User Info */
.sidebar-user-info {
    margin-top: auto;
    background: rgba(0, 0, 0, 0.15);
}

/* Sidebar Toggle Button */
#sidebarToggle {
    border-radius: 5px;
}

/* Toggled State (Mobile) */
#wrapper.toggled #sidebar-wrapper {
    margin-left: calc(var(--sidebar-width) * -1);
}

#wrapper.toggled #page-content-wrapper {
    margin-left: 0;
}

/* Responsive Sidebar */
@media (max-width: 768px) {
    #sidebar-wrapper {
        margin-left: calc(var(--sidebar-width) * -1);
    }
    
    #page-content-wrapper {
        margin-left: 0;
    }
    
    #wrapper.toggled #sidebar-wrapper {
        margin-left: 0;
    }
}

/* Top Bar */
.navbar-light {
    box-shadow: 0 2px 4px rgba(0,0,0,0.08);
}

/* ========================================
   END SIDEBAR STYLES
   ======================================== */

/* Card Enhancements */
.card {
    border: none;
    border-radius: 10px;
    box-shadow: 0 2px 4px rgba(0,0,0,0.1);
    transition: transform 0.2s, box-shadow 0.2s;
}

.card:hover {
    transform: translateY(-2px);
    box-shadow: 0 4px 8px rgba(0,0,0,0.15);
}

.card-header {
    background-color: #fff;
    border-bottom: 2px solid #f0f0f0;
    font-weight: 600;
}

/* Dashboard Stats Cards */
.stat-card {
    border-left: 4px solid var(--primary-color);
}

.stat-card.success {
    border-left-color: var(--success-color);
}

.stat-card.warning {
    border-left-color: var(--warning-color);
}

.stat-card.danger {
    border-left-color: var(--danger-color);
}

.stat-card .stat-value {
    font-size: 2rem;
    font-weight: bold;
    color: #333;
}

.stat-card .stat-label {
    font-size: 0.9rem;
    color: #6c757d;
    text-transform: uppercase;
    letter-spacing: 0.5px;
}

/* Table Enhancements */
.table {
    background-color: #fff;
}

.table thead th {
    background-color: #f8f9fa;
    border-bottom: 2px solid #dee2e6;
    font-weight: 600;
    text-transform: uppercase;
    font-size: 0.85rem;
    letter-spacing: 0.5px;
}

.table tbody tr {
    transition: background-color 0.2s;
}

.table tbody tr:hover {
    background-color: #f8f9fa;
}

/* Badge Enhancements */
.badge {
    padding: 0.4em 0.8em;
    font-weight: 500;
    letter-spacing: 0.3px;
}

/* Button Enhancements */
.btn {
    border-radius: 6px;
    padding: 0.5rem 1.2rem;
    font-weight: 500;
    transition: all 0.2s;
}

.btn:hover {
    transform: translateY(-1px);
    box-shadow: 0 2px 4px rgba(0,0,0,0.2);
}

.btn-sm {
    padding: 0.25rem 0.8rem;
    font-size: 0.875rem;
}

/* Form Enhancements */
.form-label {
    font-weight: 600;
    color: #495057;
    margin-bottom: 0.5rem;
}

.form-control, .form-select {
    border-radius: 6px;
    border: 1px solid #ced4da;
    padding: 0.6rem 0.75rem;
}

.form-control:focus, .form-select:focus {
    border-color: var(--primary-color);
    box-shadow: 0 0 0 0.2rem rgba(13, 110, 253, 0.15);
}

.input-group-text {
    background-color: #f8f9fa;
    border: 1px solid #ced4da;
}

/* Alert Enhancements */
.alert {
    border-radius: 8px;
    border: none;
    padding: 1rem 1.25rem;
}

.alert i {
    margin-right: 0.5rem;
}



/* Timeline for Approval History */
.timeline {
    position: relative;
    padding-left: 30px;
}

.timeline::before {
    content: '';
    position: absolute;
    left: 10px;
    top: 0;
    bottom: 0;
    width: 2px;
    background-color: #dee2e6;
}

.timeline-item {
    position: relative;
    padding-bottom: 1.5rem;
}

.timeline-item::before {
    content: '';
    position: absolute;
    left: -24px;
    top: 5px;
    width: 12px;
    height: 12px;
    border-radius: 50%;
    background-color: var(--primary-color);
    border: 2px solid #fff;
    box-shadow: 0 0 0 2px var(--primary-color);
}

.timeline-item.approved::before {
    background-color: var(--success-color);
    box-shadow: 0 0 0 2px var(--success-color);
}

.timeline-item.rejected::before {
    background-color: var(--danger-color);
    box-shadow: 0 0 0 2px var(--danger-color);
}

.timeline-item.pending::before {
    background-color: var(--warning-color);
    box-shadow: 0 0 0 2px var(--warning-color);
}

/* PO Details Section */
.po-detail-label {
    font-weight: 600;
    color: #6c757d;
    font-size: 0.9rem;
    text-transform: uppercase;
    letter-spacing: 0.5px;
}

.po-detail-value {
    font-size: 1.1rem;
    color: #333;
    font-weight: 500;
}

/* Loading Spinner */
.spinner-overlay {
    position: fixed;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    background-color: rgba(0,0,0,0.5);
    display: flex;
    align-items: center;
    justify-content: center;
    z-index: 9999;
}

/* Responsive Adjustments */
@media (max-width: 768px) {
    .stat-card .stat-value {
        font-size: 1.5rem;
    }
    
    .table {
        font-size: 0.9rem;
    }
    
    .btn {
        padding: 0.4rem 1rem;
        font-size: 0.9rem;
    }
}

/* Print Styles */
@media print {
    .navbar, .btn, footer {
        display: none !important;
    }
    
    .card {
        box-shadow: none;
        border: 1px solid #dee2e6;
    }
}

/* Custom Scrollbar */
::-webkit-scrollbar {
    width: 10px;
}

::-webkit-scrollbar-track {
    background: #f1f1f1;
}

::-webkit-scrollbar-thumb {
    background: #888;
    border-radius: 5px;
}

::-webkit-scrollbar-thumb:hover {
    background: #555;
}

/* Empty State */
.empty-state {
    text-align: center;
    padding: 3rem 1rem;
    color: #6c757d;
}

.empty-state i {
    font-size: 4rem;
    margin-bottom: 1rem;
    opacity: 0.5;
}

.empty-state h4 {
    margin-bottom: 0.5rem;
}

.empty-state p {
    margin-bottom: 1.5rem;
}