/* General Styles */
:root {
    --primary-color: #4e73df;
    --secondary-color: #1cc88a;
    --dark-color: #5a5c69;
    --light-color: #f8f9fc;
    --danger-color: #e74a3b;
    --warning-color: #f6c23e;
    --info-color: #36b9cc;
}

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

body {
    font-family: 'Nunito', -apple-system, BlinkMacSystemFont, 'Segoe UI', Roboto, 'Helvetica Neue', Arial, sans-serif;
    background-color: var(--light-color);
    color: var(--dark-color);
    line-height: 1.6;
}

.container {
    width: 100%;
    max-width: 1200px;
    margin: 0 auto;
    padding: 0 15px;
}

/* Navigation */
.navbar {
    background-color: #fff;
    box-shadow: 0 2px 5px rgba(0, 0, 0, 0.1);
    position: fixed;
    top: 0;
    width: 100%;
    z-index: 1000;
}

.navbar-container {
    display: flex;
    justify-content: space-between;
    align-items: center;
    padding: 15px;
}

.navbar-brand {
    font-size: 1.5rem;
    font-weight: 700;
    color: var(--primary-color);
    text-decoration: none;
}

.navbar-nav {
    display: flex;
    list-style: none;
}

.nav-item {
    margin-left: 20px;
}

.nav-link {
    color: var(--dark-color);
    text-decoration: none;
    transition: color 0.3s;
}

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

.dropdown {
    position: relative;
}

.dropdown-menu {
    position: absolute;
    top: 100%;
    right: 0;
    background-color: #fff;
    box-shadow: 0 2px 5px rgba(0, 0, 0, 0.1);
    border-radius: 4px;
    padding: 10px 0;
    min-width: 160px;
    display: none;
}

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

.dropdown-item {
    display: block;
    padding: 8px 15px;
    color: var(--dark-color);
    text-decoration: none;
}

.dropdown-item:hover {
    background-color: #f8f9fc;
    color: var(--primary-color);
}

/* Sidebar */
.sidebar {
    position: fixed;
    top: 0;
    left: 0;
    width: 250px;
    height: 100vh;
    background-color: var(--primary-color);
    color: #fff;
    padding-top: 80px;
    transition: all 0.3s;
    z-index: 900;
}

.sidebar-brand {
    padding: 15px 20px;
    font-size: 1.2rem;
    font-weight: 700;
    text-align: center;
    margin-bottom: 30px;
}

.sidebar-nav {
    list-style: none;
}

.sidebar-item {
    margin-bottom: 5px;
}

.sidebar-link {
    display: block;
    padding: 12px 20px;
    color: rgba(255, 255, 255, 0.8);
    text-decoration: none;
    transition: all 0.3s;
}

.sidebar-link:hover,
.sidebar-link.active {
    color: #fff;
    background-color: rgba(255, 255, 255, 0.1);
}

.sidebar-link i {
    margin-right: 10px;
}

/* Main Content */
.main-content {
    margin-left: 250px;
    padding: 80px 20px 20px;
    min-height: 100vh;
    transition: all 0.3s;
}

/* Dashboard Cards */
.dashboard-cards {
    display: grid;
    grid-template-columns: repeat(auto-fill, minmax(300px, 1fr));
    gap: 20px;
    margin-bottom: 30px;
}

.card {
    background-color: #fff;
    border-radius: 8px;
    box-shadow: 0 2px 5px rgba(0, 0, 0, 0.1);
    overflow: hidden;
}

.card-header {
    padding: 15px 20px;
    background-color: #f8f9fc;
    border-bottom: 1px solid #e3e6f0;
    font-weight: 700;
}

.card-body {
    padding: 20px;
}

.card-footer {
    padding: 15px 20px;
    background-color: #f8f9fc;
    border-top: 1px solid #e3e6f0;
}

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

.table {
    width: 100%;
    border-collapse: collapse;
    margin-bottom: 20px;
}

.table th,
.table td {
    padding: 12px 15px;
    text-align: left;
    border-bottom: 1px solid #e3e6f0;
}

.table th {
    background-color: #f8f9fc;
    font-weight: 700;
}

.table tbody tr:hover {
    background-color: #f8f9fc;
}

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

.form-label {
    display: block;
    margin-bottom: 8px;
    font-weight: 600;
}

.form-control {
    width: 100%;
    padding: 10px 15px;
    border: 1px solid #d1d3e2;
    border-radius: 4px;
    font-size: 1rem;
    transition: border-color 0.3s;
}

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

.form-select {
    width: 100%;
    padding: 10px 15px;
    border: 1px solid #d1d3e2;
    border-radius: 4px;
    font-size: 1rem;
    appearance: none;
    background-image: url("data:image/svg+xml,%3Csvg xmlns='http://www.w3.org/2000/svg' width='12' height='12' fill='%235a5c69' viewBox='0 0 16 16'%3E%3Cpath d='M7.247 11.14 2.451 5.658C1.885 5.013 2.345 4 3.204 4h9.592a1 1 0 0 1 .753 1.659l-4.796 5.48a1 1 0 0 1-1.506 0z'/%3E%3C/svg%3E");
    background-repeat: no-repeat;
    background-position: right 15px center;
}

.form-check {
    display: flex;
    align-items: center;
    margin-bottom: 10px;
}

.form-check-input {
    margin-right: 10px;
}

/* Buttons */
.btn {
    display: inline-block;
    padding: 10px 20px;
    font-size: 1rem;
    font-weight: 600;
    text-align: center;
    text-decoration: none;
    border-radius: 4px;
    cursor: pointer;
    transition: all 0.3s;
    border: none;
}

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

.btn-primary:hover {
    background-color: #2e59d9;
}

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

.btn-secondary:hover {
    background-color: #17a673;
}

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

.btn-danger:hover {
    background-color: #be2617;
}

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

.btn-warning:hover {
    background-color: #dda20a;
}

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

.btn-info:hover {
    background-color: #2c9faf;
}

.btn-sm {
    padding: 5px 10px;
    font-size: 0.875rem;
}

.btn-lg {
    padding: 15px 25px;
    font-size: 1.125rem;
}

/* Alerts */
.alert {
    padding: 15px;
    margin-bottom: 20px;
    border-radius: 4px;
}

.alert-success {
    background-color: #d4edda;
    color: #155724;
    border: 1px solid #c3e6cb;
}

.alert-danger {
    background-color: #f8d7da;
    color: #721c24;
    border: 1px solid #f5c6cb;
}

.alert-warning {
    background-color: #fff3cd;
    color: #856404;
    border: 1px solid #ffeeba;
}

.alert-info {
    background-color: #d1ecf1;
    color: #0c5460;
    border: 1px solid #bee5eb;
}

/* Modals */
.modal {
    position: fixed;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    background-color: rgba(0, 0, 0, 0.5);
    display: flex;
    justify-content: center;
    align-items: center;
    z-index: 1050;
    opacity: 0;
    visibility: hidden;
    transition: all 0.3s;
}

.modal.show {
    opacity: 1;
    visibility: visible;
}

.modal-dialog {
    width: 100%;
    max-width: 500px;
    background-color: #fff;
    border-radius: 8px;
    overflow: hidden;
    box-shadow: 0 5px 15px rgba(0, 0, 0, 0.1);
    transform: translateY(-50px);
    transition: transform 0.3s;
}

.modal.show .modal-dialog {
    transform: translateY(0);
}

.modal-header {
    padding: 15px 20px;
    background-color: #f8f9fc;
    border-bottom: 1px solid #e3e6f0;
    display: flex;
    justify-content: space-between;
    align-items: center;
}

.modal-title {
    font-weight: 700;
    margin: 0;
}

.modal-close {
    background: none;
    border: none;
    font-size: 1.5rem;
    cursor: pointer;
    color: var(--dark-color);
}

.modal-body {
    padding: 20px;
}

.modal-footer {
    padding: 15px 20px;
    background-color: #f8f9fc;
    border-top: 1px solid #e3e6f0;
    display: flex;
    justify-content: flex-end;
}

.modal-footer .btn {
    margin-left: 10px;
}

/* Utilities */
.text-center {
    text-align: center;
}

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

.text-primary {
    color: var(--primary-color);
}

.text-secondary {
    color: var(--secondary-color);
}

.text-danger {
    color: var(--danger-color);
}

.text-warning {
    color: var(--warning-color);
}

.text-info {
    color: var(--info-color);
}

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

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

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

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

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

.mb-1 {
    margin-bottom: 0.25rem;
}

.mb-2 {
    margin-bottom: 0.5rem;
}

.mb-3 {
    margin-bottom: 1rem;
}

.mb-4 {
    margin-bottom: 1.5rem;
}

.mb-5 {
    margin-bottom: 3rem;
}

.mt-1 {
    margin-top: 0.25rem;
}

.mt-2 {
    margin-top: 0.5rem;
}

.mt-3 {
    margin-top: 1rem;
}

.mt-4 {
    margin-top: 1.5rem;
}

.mt-5 {
    margin-top: 3rem;
}

/* Login and Registration */
.auth-container {
    display: flex;
    justify-content: center;
    align-items: center;
    min-height: 100vh;
    background-color: var(--primary-color);
    background-image: linear-gradient(135deg, var(--primary-color) 0%, #224abe 100%);
}

.auth-card {
    width: 100%;
    max-width: 500px;
    background-color: #fff;
    border-radius: 8px;
    box-shadow: 0 5px 15px rgba(0, 0, 0, 0.1);
    overflow: hidden;
}

.auth-header {
    padding: 30px 20px;
    text-align: center;
}

.auth-title {
    font-size: 1.5rem;
    font-weight: 700;
    color: var(--dark-color);
    margin-bottom: 10px;
}

.auth-subtitle {
    color: #6c757d;
}

.auth-body {
    padding: 20px 30px 30px;
}

.auth-footer {
    padding: 15px 20px;
    background-color: #f8f9fc;
    border-top: 1px solid #e3e6f0;
    text-align: center;
}

.auth-footer a {
    color: var(--primary-color);
    text-decoration: none;
}

.auth-footer a:hover {
    text-decoration: underline;
}

/* Responsive */
@media (max-width: 992px) {
    .sidebar {
        transform: translateX(-100%);
    }
    
    .sidebar.show {
        transform: translateX(0);
    }
    
    .main-content {
        margin-left: 0;
    }
    
    .main-content.sidebar-open {
        margin-left: 250px;
    }
    
    .navbar-toggler {
        display: block;
    }
}

@media (max-width: 768px) {
    .dashboard-cards {
        grid-template-columns: 1fr;
    }
    
    .auth-card {
        margin: 0 15px;
    }
}

/* Custom File Input */
.custom-file {
    position: relative;
    display: inline-block;
    width: 100%;
    margin-bottom: 0;
}

.custom-file-input {
    position: relative;
    z-index: 2;
    width: 100%;
    height: calc(1.5em + 0.75rem + 2px);
    margin: 0;
    opacity: 0;
}

.custom-file-label {
    position: absolute;
    top: 0;
    right: 0;
    left: 0;
    z-index: 1;
    height: calc(1.5em + 0.75rem + 2px);
    padding: 0.375rem 0.75rem;
    font-weight: 400;
    line-height: 1.5;
    color: #6e707e;
    background-color: #fff;
    border: 1px solid #d1d3e2;
    border-radius: 0.35rem;
    overflow: hidden;
    text-overflow: ellipsis;
    white-space: nowrap;
}

.custom-file-input:focus ~ .custom-file-label {
    border-color: var(--primary-color);
    box-shadow: 0 0 0 0.2rem rgba(78, 115, 223, 0.25);
}

.custom-file-label::after {
    position: absolute;
    top: 0;
    right: 0;
    bottom: 0;
    z-index: 3;
    display: block;
    height: calc(1.5em + 0.75rem);
    padding: 0.375rem 0.75rem;
    line-height: 1.5;
    color: #fff;
    content: "Browse";
    background-color: var(--primary-color);
    border-left: inherit;
    border-radius: 0 0.35rem 0.35rem 0;
}

/* Loader */
.loader {
    display: inline-block;
    width: 30px;
    height: 30px;
    border: 3px solid rgba(0, 0, 0, 0.1);
    border-radius: 50%;
    border-top-color: var(--primary-color);
    animation: spin 1s ease-in-out infinite;
}

@keyframes spin {
    to {
        transform: rotate(360deg);
    }
}

/* Pagination */
.pagination {
    display: flex;
    list-style: none;
    justify-content: center;
    margin-top: 20px;
}

.page-item {
    margin: 0 5px;
}

.page-link {
    display: block;
    padding: 8px 12px;
    border-radius: 4px;
    border: 1px solid #d1d3e2;
    color: var(--primary-color);
    text-decoration: none;
    transition: all 0.3s;
}

.page-link:hover {
    background-color: #f8f9fc;
}

.page-item.active .page-link {
    background-color: var(--primary-color);
    color: #fff;
    border-color: var(--primary-color);
}

.page-item.disabled .page-link {
    color: #6c757d;
    pointer-events: none;
    background-color: #fff;
    border-color: #d1d3e2;
}

/* Badges */
.badge {
    display: inline-block;
    padding: 0.25em 0.6em;
    font-size: 75%;
    font-weight: 700;
    line-height: 1;
    text-align: center;
    white-space: nowrap;
    vertical-align: baseline;
    border-radius: 0.35rem;
}

.badge-primary {
    color: #fff;
    background-color: var(--primary-color);
}

.badge-secondary {
    color: #fff;
    background-color: var(--secondary-color);
}

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

.badge-warning {
    color: #fff;
    background-color: var(--warning-color);
}

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

.badge-success {
    color: #fff;
    background-color: var(--secondary-color);
}

.badge-pending {
    color: #212529;
    background-color: #ffc107;
}

.badge-approved {
    color: #fff;
    background-color: #28a745;
}

.badge-rejected {
    color: #fff;
    background-color: #dc3545;
}

/* Progress Bar */
.progress {
    display: flex;
    height: 1rem;
    overflow: hidden;
    font-size: 0.75rem;
    background-color: #e9ecef;
    border-radius: 0.35rem;
}

.progress-bar {
    display: flex;
    flex-direction: column;
    justify-content: center;
    color: #fff;
    text-align: center;
    white-space: nowrap;
    background-color: var(--primary-color);
    transition: width 0.6s ease;
}

/* Tooltips */
.tooltip {
    position: relative;
    display: inline-block;
}

.tooltip .tooltip-text {
    visibility: hidden;
    width: 120px;
    background-color: #333;
    color: #fff;
    text-align: center;
    border-radius: 6px;
    padding: 5px;
    position: absolute;
    z-index: 1;
    bottom: 125%;
    left: 50%;
    margin-left: -60px;
    opacity: 0;
    transition: opacity 0.3s;
}

.tooltip:hover .tooltip-text {
    visibility: visible;
    opacity: 1;
}

/* Responsive Tables */
@media (max-width: 768px) {
    .table-responsive-sm {
        display: block;
        width: 100%;
        overflow-x: auto;
        -webkit-overflow-scrolling: touch;
    }
}

/* Print Styles */
@media print {
    .sidebar,
    .navbar,
    .btn,
    .no-print {
        display: none !important;
    }
    
    .main-content {
        margin-left: 0 !important;
        padding: 0 !important;
    }
    
    .card {
        box-shadow: none !important;
        border: 1px solid #ddd !important;
    }
}