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

:root {
    --dark-blue: #003366;
    --light-blue: #4da3ff;
    --white: #ffffff;
    --light-bg: #e6f2ff;
    --success: #28a745;
    --danger: #dc3545;
    --warning: #ffc107;
    --info: #17a2b8;
}

body {
    font-family: 'Segoe UI', Tahoma, Geneva, Verdana, sans-serif;
    background: var(--light-bg);
    color: #333;
    line-height: 1.6;
}

.navbar {
    background: var(--dark-blue);
    color: var(--white);
    padding: 1rem 0;
    box-shadow: 0 2px 5px rgba(0,0,0,0.1);
}

.nav-container {
    max-width: 1200px;
    margin: 0 auto;
    padding: 0 2rem;
    display: flex;
    justify-content: space-between;
    align-items: center;
}

.nav-brand {
    font-size: 1.5rem;
    font-weight: bold;
    color: var(--white);
    text-decoration: none;
}

.nav-links {
    display: flex;
    gap: 1.5rem;
}

.nav-links a {
    color: var(--white);
    text-decoration: none;
    padding: 0.5rem 1rem;
    border-radius: 4px;
    transition: background 0.3s;
}

.nav-links a:hover {
    background: var(--light-blue);
}

.flash-messages {
    max-width: 1200px;
    margin: 1rem auto;
    padding: 0 2rem;
}

.alert {
    padding: 1rem;
    margin-bottom: 1rem;
    border-radius: 5px;
    border-left: 4px solid;
}

.alert-success {
    background: #d4edda;
    border-color: var(--success);
    color: #155724;
}

.alert-danger {
    background: #f8d7da;
    border-color: var(--danger);
    color: #721c24;
}

.alert-warning {
    background: #fff3cd;
    border-color: var(--warning);
    color: #856404;
}

.alert-info {
    background: #d1ecf1;
    border-color: var(--info);
    color: #0c5460;
}

.main-content {
    max-width: 1200px;
    margin: 2rem auto;
    padding: 0 2rem;
    min-height: calc(100vh - 200px);
}

.container {
    max-width: 600px;
    margin: 40px auto;
    background: var(--white);
    padding: 2rem;
    border-radius: 12px;
    border-top: 10px solid var(--dark-blue);
    box-shadow: 0px 4px 10px rgba(0, 51, 102, 0.2);
}

.dashboard-container {
    background: var(--white);
    padding: 2rem;
    border-radius: 12px;
    box-shadow: 0px 4px 10px rgba(0, 51, 102, 0.1);
}

h1 {
    color: var(--dark-blue);
    margin-bottom: 1rem;
}

h2 {
    color: var(--dark-blue);
    margin-top: 2rem;
    margin-bottom: 1rem;
}

h3 {
    color: var(--dark-blue);
    margin-top: 1.5rem;
    margin-bottom: 0.5rem;
    font-size: 1.2rem;
}

.welcome-text {
    color: #666;
    margin-bottom: 2rem;
}

.stats-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(200px, 1fr));
    gap: 1.5rem;
    margin-bottom: 2rem;
}

.stat-card {
    background: var(--light-bg);
    padding: 1.5rem;
    border-radius: 8px;
    border-left: 4px solid var(--light-blue);
    text-align: center;
}

.stat-card h3 {
    margin: 0;
    font-size: 1rem;
    color: #666;
}

.stat-number {
    font-size: 2.5rem;
    font-weight: bold;
    color: var(--dark-blue);
    margin: 0.5rem 0 0 0;
}

.employee-info-card {
    background: var(--white);
}

.info-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(250px, 1fr));
    gap: 1rem;
    margin: 1.5rem 0;
}

.info-item {
    padding: 1rem;
    background: var(--light-bg);
    border-radius: 6px;
    border-left: 3px solid var(--light-blue);
}

.info-item strong {
    display: block;
    color: var(--dark-blue);
    margin-bottom: 0.5rem;
}

.info-item span {
    color: #333;
}

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

input, select, textarea {
    width: 100%;
    padding: 0.75rem;
    margin-bottom: 1rem;
    font-size: 16px;
    border: 2px solid var(--light-blue);
    border-radius: 5px;
    transition: border-color 0.3s;
}

input:focus, select:focus, textarea:focus {
    outline: none;
    border-color: var(--dark-blue);
}

.btn {
    padding: 0.75rem 1.5rem;
    font-size: 1rem;
    border: none;
    border-radius: 6px;
    cursor: pointer;
    text-decoration: none;
    display: inline-block;
    transition: all 0.3s;
    font-weight: 500;
}

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

.btn-primary:hover {
    background: var(--light-blue);
    transform: translateY(-2px);
    box-shadow: 0 4px 8px rgba(0,0,0,0.2);
}

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

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

.btn-warning {
    background: var(--warning);
    color: #333;
}

.btn-warning:hover {
    background: #e0a800;
}

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

.btn-danger:hover {
    background: #c82333;
}

.btn-small {
    padding: 0.4rem 0.8rem;
    font-size: 0.875rem;
}

button[type="submit"] {
    width: 100%;
    background: var(--dark-blue);
    color: var(--white);
    padding: 1rem;
    font-size: 1.1rem;
    border: none;
    border-radius: 6px;
    cursor: pointer;
    transition: all 0.3s;
    margin-top: 0.5rem;
}

button[type="submit"]:hover {
    background: var(--light-blue);
    transform: translateY(-2px);
    box-shadow: 0 4px 8px rgba(0,0,0,0.2);
}

.action-section {
    margin: 2rem 0;
    text-align: center;
}

.action-buttons {
    display: flex;
    gap: 0.5rem;
    flex-wrap: wrap;
}

.form-footer {
    text-align: center;
    margin-top: 1.5rem;
    padding-top: 1rem;
    border-top: 1px solid #ddd;
}

.form-footer a {
    color: var(--light-blue);
    text-decoration: none;
}

.form-footer a:hover {
    color: var(--dark-blue);
    text-decoration: underline;
}

.table-container {
    overflow-x: auto;
    margin-top: 1rem;
}

.data-table {
    width: 100%;
    border-collapse: collapse;
    background: var(--white);
}

.data-table thead {
    background: var(--dark-blue);
    color: var(--white);
}

.data-table th,
.data-table td {
    padding: 1rem;
    text-align: left;
    border-bottom: 1px solid #ddd;
}

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

.id-card-container {
    text-align: center;
    padding: 1rem;
    max-width: 1200px;
    margin: 0 auto;
}

.id-card-image {
    width: 100%;
    max-width: 1000px;
    height: auto;
    border: 3px solid var(--dark-blue);
    border-radius: 12px;
    box-shadow: 0 8px 24px rgba(0,0,0,0.2);
    margin-bottom: 2rem;
    cursor: zoom-in;
    transition: transform 0.3s ease;
}

.id-card-image:hover {
    transform: scale(1.02);
}

.id-card-image.zoomed {
    cursor: zoom-out;
    position: fixed;
    top: 50%;
    left: 50%;
    transform: translate(-50%, -50%) scale(1.5);
    max-width: 95vw;
    max-height: 95vh;
    z-index: 9999;
    background: white;
    padding: 10px;
}

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

.modal-content {
    background-color: var(--white);
    margin: 10% auto;
    padding: 2rem;
    border: 1px solid #888;
    width: 90%;
    max-width: 500px;
    border-radius: 12px;
    border-top: 10px solid var(--dark-blue);
}

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

.close:hover,
.close:focus {
    color: #000;
}

footer {
    background: var(--dark-blue);
    color: var(--white);
    text-align: center;
    padding: 1.5rem 0;
    margin-top: 3rem;
}

@media (max-width: 768px) {
    body {
        font-size: 14px;
    }

    .nav-container {
        flex-direction: column;
        gap: 0.5rem;
        padding: 0 1rem;
    }

    .nav-brand {
        font-size: 1.2rem;
    }

    .nav-links {
        flex-direction: column;
        gap: 0.5rem;
        width: 100%;
    }

    .nav-links a {
        text-align: center;
        padding: 0.75rem;
    }

    .main-content {
        padding: 0 1rem;
    }

    .container {
        padding: 1.5rem;
        margin: 20px auto;
        width: 95%;
    }

    .dashboard-container {
        padding: 1.5rem;
    }

    h1 {
        font-size: 1.5rem;
    }

    h2 {
        font-size: 1.3rem;
    }

    .stats-grid {
        grid-template-columns: 1fr;
        gap: 1rem;
    }

    .info-grid {
        grid-template-columns: 1fr;
    }

    .action-section {
        display: flex;
        flex-direction: column;
        gap: 0.75rem;
    }

    .action-section .btn {
        width: 100%;
    }

    .action-buttons {
        flex-direction: column;
        gap: 0.5rem;
    }

    .action-buttons .btn-small,
    .action-buttons a {
        width: 100%;
        text-align: center;
    }

    .action-buttons form {
        width: 100%;
    }

    .action-buttons form button {
        width: 100%;
    }

    .table-container {
        overflow-x: auto;
        -webkit-overflow-scrolling: touch;
    }

    .data-table {
        font-size: 0.75rem;
        min-width: 600px;
    }

    .data-table th,
    .data-table td {
        padding: 0.4rem;
        white-space: nowrap;
    }

    .modal-content {
        width: 95%;
        margin: 5% auto;
        padding: 1.5rem;
    }

    .id-card-container {
        padding: 0;
        margin: 0;
    }

    .id-card-image {
        width: 100%;
        max-width: 100%;
        height: auto;
        object-fit: contain;
        border-radius: 0;
    }

    .id-card-image.zoomed {
        position: fixed !important;
        top: 50% !important;
        left: 50% !important;
        transform: translate(-50%, -50%) scale(1.8) !important;
        max-width: none !important;
        max-height: none !important;
        width: 95vw !important;
        height: auto !important;
        z-index: 99999 !important;
        background: white !important;
        padding: 5px !important;
        box-shadow: 0 0 50px rgba(0,0,0,0.8) !important;
    }

    input, select, textarea {
        font-size: 16px;
    }

    .btn {
        padding: 0.75rem 1rem;
        font-size: 1rem;
        width: 100%;
        margin-bottom: 0.5rem;
    }

    .form-footer {
        margin-top: 1rem;
    }
}

@media (max-width: 480px) {
    .nav-brand {
        font-size: 1rem;
    }

    h1 {
        font-size: 1.3rem;
    }

    .stat-number {
        font-size: 2rem;
    }

    .data-table {
        font-size: 0.7rem;
    }
}