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

body {
    font-family: 'Arial', sans-serif;
    background-color: #f5f5f5;
    color: #333;
}

/* Login Page */
.login-container {
    display: flex;
    justify-content: center;
    align-items: center;
    min-height: 100vh;
    background: linear-gradient(135deg, #667eea 0%, #764ba2 100%);
}

.login-box {
    background: white;
    padding: 40px;
    border-radius: 10px;
    box-shadow: 0 10px 25px rgba(0,0,0,0.2);
    width: 100%;
    max-width: 400px;
}

.login-box h2 {
    text-align: center;
    margin-bottom: 30px;
    color: #333;
}

/* Header */
.header {
    display: flex;
    justify-content: space-between;
    align-items: center;
    padding: 15px 20px;
    background-color: midnightblue;
    color: white;
    box-shadow: 0 2px 5px rgba(0,0,0,0.1);
}

.search-input {
    padding: 8px 12px;
    border-radius: 5px;
    border: none;
    min-width: 200px;
    font-size: 14px;
}

.header-actions {
    display: flex;
    gap: 10px;
}

/* Container */
.container {
    margin: 20px;
    background: white;
    padding: 20px;
    border-radius: 10px;
    box-shadow: 0 2px 10px rgba(0,0,0,0.1);
}

.action-buttons {
    margin-bottom: 20px;
    display: flex;
    gap: 10px;
}

.action-buttons a,
.action-buttons button {
    text-decoration: none;
    display: inline-block;
}

/* Buttons */
.btn {
    padding: 10px 20px;
    border: none;
    border-radius: 5px;
    cursor: pointer;
    font-size: 14px;
    transition: all 0.3s;
    text-decoration: none;
    display: inline-block;
}

.btn-primary {
    background-color: midnightblue;
    color: white;
}

.btn-primary:hover {
    background-color: darkblue;
}

.btn-secondary {
    background-color: #6c757d;
    color: white;
}

.btn-secondary:hover {
    background-color: #5a6268;
}

.btn-outline {
    background-color: transparent;
    border: 1px solid white;
    color: white;
}

.btn-outline:hover {
    background-color: rgba(255,255,255,0.1);
}

.btn-success {
    background-color: #28a745;
    color: white;
}

.btn-info {
    background-color: #17a2b8;
    color: white;
}

.btn-error {
    background-color: #dc3545;
    color: white;
}

/* Forms */
.form-container {
    max-width: 800px;
    margin: 0 auto;
    background: white;
    padding: 30px;
    border-radius: 10px;
    box-shadow: 0 2px 10px rgba(0,0,0,0.1);
}

.form-container h2 {
    text-align: center;
    margin-bottom: 20px;
    color: #333;
}

.form-grid {
    display: grid;
    grid-template-columns: repeat(2, 1fr);
    gap: 20px;
    margin-bottom: 20px;
}

.form-group {
    display: flex;
    flex-direction: column;
}

.form-group.full-width {
    grid-column: 1 / -1;
}

.form-group label {
    margin-bottom: 5px;
    font-weight: bold;
    color: #555;
}

.form-group input,
.form-group select,
.form-group textarea {
    padding: 10px;
    border: 1px solid #ddd;
    border-radius: 5px;
    font-size: 14px;
    font-family: inherit;
}

.form-group input:focus,
.form-group select:focus,
.form-group textarea:focus {
    outline: none;
    border-color: midnightblue;
}

.form-group textarea {
    resize: vertical;
}

.form-footer {
    margin-top: 15px;
    text-align: center;
    display: flex;
    justify-content: space-between;
}

.form-footer a {
    color: midnightblue;
    text-decoration: none;
}

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

/* Tables */
.table-container {
    overflow-x: auto;
    margin-bottom: 20px;
}

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

thead {
    background-color: midnightblue;
    color: white;
}

th, td {
    padding: 12px;
    text-align: center;
    border-bottom: 1px solid #ddd;
}

tbody tr:hover {
    background-color: #f5f5f5;
}

/* Pagination */
.pagination {
    display: flex;
    justify-content: center;
    align-items: center;
    gap: 15px;
    margin-top: 20px;
}

.pagination select {
    padding: 8px;
    border: 1px solid #ddd;
    border-radius: 5px;
}

/* Modal */
.modal {
    display: none;
    position: fixed;
    z-index: 1000;
    left: 0;
    top: 0;
    width: 100%;
    height: 100%;
    overflow: auto;
    background-color: rgba(0,0,0,0.5);
}

.modal-content {
    background-color: white;
    margin: 5% auto;
    padding: 30px;
    border-radius: 10px;
    width: 90%;
    max-width: 500px;
    box-shadow: 0 5px 15px rgba(0,0,0,0.3);
    position: relative;
}

.modal-content.large {
    max-width: 800px;
}

.close {
    color: #aaa;
    float: right;
    font-size: 28px;
    font-weight: bold;
    cursor: pointer;
    position: absolute;
    right: 20px;
    top: 15px;
}

.close:hover {
    color: #000;
}

.modal-content h2 {
    margin-bottom: 20px;
    color: #333;
}

/* Snackbar */
#snackbar {
    visibility: hidden;
    min-width: 250px;
    margin-left: -125px;
    background-color: #333;
    color: #fff;
    text-align: center;
    border-radius: 5px;
    padding: 16px;
    position: fixed;
    z-index: 1001;
    left: 50%;
    bottom: 30px;
    font-size: 14px;
}

#snackbar.show {
    visibility: visible;
    animation: fadein 0.5s, fadeout 0.5s 2.5s;
}

#snackbar.success {
    background-color: #28a745;
}

#snackbar.error {
    background-color: #dc3545;
}

@keyframes fadein {
    from {bottom: 0; opacity: 0;}
    to {bottom: 30px; opacity: 1;}
}

@keyframes fadeout {
    from {bottom: 30px; opacity: 1;}
    to {bottom: 0; opacity: 0;}
}

/* Error Page */
.error-container {
    display: flex;
    justify-content: center;
    align-items: center;
    min-height: 100vh;
    background-color: #f8f9fa;
}

.error-box {
    background: white;
    padding: 40px;
    border-radius: 10px;
    box-shadow: 0 2px 10px rgba(0,0,0,0.1);
    text-align: center;
    max-width: 400px;
}

.error-box h1 {
    color: #dc3545;
    margin-bottom: 20px;
}

.error-box p {
    color: #666;
    margin-bottom: 30px;
}

/* Action buttons in table */
.action-buttons-table {
    display: flex;
    gap: 5px;
    justify-content: center;
}

.action-buttons-table button {
    padding: 5px 10px;
    font-size: 12px;
}

/* Responsive */
@media (max-width: 768px) {
    .form-grid {
        grid-template-columns: 1fr;
    }
    
    .header {
        flex-direction: column;
        gap: 10px;
    }
    
    .table-container {
        overflow-x: scroll;
    }
}