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

body {
    font-family: -apple-system, BlinkMacSystemFont, 'Segoe UI', Roboto, Oxygen, Ubuntu, Cantarell, sans-serif;
    background-color: #f5f5f5;
    color: #333;
    line-height: 1.6;
}

.container {
    max-width: 1200px;
    margin: 0 auto;
    padding: 20px;
}

/* Navigation */
.navbar {
    background-color: #2c3e50;
    color: white;
    padding: 1rem 0;
    box-shadow: 0 2px 4px rgba(0,0,0,0.1);
}

.nav-container {
    max-width: 1200px;
    margin: 0 auto;
    padding: 0 20px;
    display: flex;
    justify-content: space-between;
    align-items: center;
}

.nav-brand {
    display: flex;
    align-items: center;
    gap: 10px;
    font-size: 1.2rem;
    font-weight: bold;
}

.nav-logo {
    height: 40px;
    width: auto;
}

.nav-links {
    display: flex;
    gap: 20px;
    align-items: center;
}

.nav-links a {
    color: white;
    text-decoration: none;
    padding: 8px 16px;
    border-radius: 4px;
    transition: background-color 0.3s;
}

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

.btn-logout {
    background-color: #e74c3c;
    color: white;
    border: none;
    padding: 8px 16px;
    border-radius: 4px;
    cursor: pointer;
    font-size: 0.9rem;
}

.btn-logout:hover {
    background-color: #c0392b;
}

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

.login-container {
    width: 100%;
    max-width: 400px;
    padding: 20px;
}

.login-box {
    background: white;
    padding: 40px;
    border-radius: 8px;
    box-shadow: 0 10px 25px rgba(0,0,0,0.2);
}

.login-logo {
    display: block;
    margin: 0 auto 20px;
    max-width: 120px;
    height: auto;
}

.login-box h1 {
    text-align: center;
    margin-bottom: 30px;
    color: #2c3e50;
}

.login-help {
    margin-top: 20px;
    font-size: 0.9rem;
    color: #666;
    text-align: center;
}

.success-message {
    background-color: #d4edda;
    border: 1px solid #c3e6cb;
    color: #155724;
    padding: 15px;
    border-radius: 4px;
    margin-bottom: 20px;
}

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

.btn-primary {
    background-color: #3498db;
    color: white;
}

.btn-primary:hover {
    background-color: #2980b9;
}

.btn-secondary {
    background-color: #95a5a6;
    color: white;
}

.btn-secondary:hover {
    background-color: #7f8c8d;
}

.btn-success {
    background-color: #27ae60;
    color: white;
}

.btn-success:hover {
    background-color: #229954;
}

.btn-danger {
    background-color: #e74c3c;
    color: white;
}

.btn-danger:hover {
    background-color: #c0392b;
}

.btn-sm {
    padding: 6px 12px;
    font-size: 0.875rem;
}

/* Forms */
.form {
    background: white;
    padding: 30px;
    border-radius: 8px;
    box-shadow: 0 2px 4px rgba(0,0,0,0.1);
}

.form-section {
    margin-bottom: 30px;
}

.form-section h2 {
    margin-bottom: 20px;
    color: #2c3e50;
    border-bottom: 2px solid #3498db;
    padding-bottom: 10px;
}

.section-header {
    display: flex;
    justify-content: space-between;
    align-items: center;
    margin-bottom: 20px;
}

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

.form-group label {
    display: block;
    margin-bottom: 5px;
    font-weight: 500;
    color: #555;
}

.form-group input[type="text"],
.form-group input[type="email"],
.form-group input[type="number"],
.form-group input[type="date"],
.form-group select,
.form-group textarea {
    width: 100%;
    padding: 10px;
    border: 1px solid #ddd;
    border-radius: 4px;
    font-size: 1rem;
}

.form-group input:focus,
.form-group select:focus,
.form-group textarea:focus {
    outline: none;
    border-color: #3498db;
    box-shadow: 0 0 0 3px rgba(52, 152, 219, 0.1);
}

.form-row {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(200px, 1fr));
    gap: 20px;
}

.form-actions {
    display: flex;
    gap: 10px;
    margin-top: 30px;
    padding-top: 20px;
    border-top: 1px solid #eee;
}

/* Timesheet Form */
.timesheet-form {
    max-width: 100%;
    overflow-x: auto;
}

.employee-entry {
    overflow-x: auto;
}

.employee-entry {
    background: #f9f9f9;
    padding: 20px;
    margin-bottom: 20px;
    border-radius: 8px;
    border: 1px solid #ddd;
}

.employee-header {
    display: flex;
    justify-content: space-between;
    align-items: flex-end;
    margin-bottom: 15px;
}

.employee-header .form-group {
    flex: 1;
    margin-right: 15px;
    margin-bottom: 0;
}

.hours-grid {
    display: grid;
    grid-template-columns: repeat(7, 1fr);
    gap: 8px;
    overflow-x: auto;
}

.day-column {
    display: flex;
    flex-direction: column;
    gap: 5px;
    min-width: 0;
}

.day-column label {
    font-weight: bold;
    font-size: 0.9rem;
    color: #555;
}

.day-column input[type="number"],
.day-column input[type="text"] {
    padding: 6px;
    font-size: 0.85rem;
    width: 100%;
    box-sizing: border-box;
    border: 1px solid #ddd;
    border-radius: 4px;
}

.day-column input[type="number"]:focus,
.day-column input[type="text"]:focus {
    outline: none;
    border-color: #3498db;
    box-shadow: 0 0 0 2px rgba(52, 152, 219, 0.1);
}

/* Tables */
.page-header {
    display: flex;
    justify-content: space-between;
    align-items: center;
    margin-bottom: 30px;
}

.page-header h1 {
    color: #2c3e50;
}

.data-table {
    width: 100%;
    background: white;
    border-collapse: collapse;
    box-shadow: 0 2px 4px rgba(0,0,0,0.1);
    border-radius: 8px;
    overflow: hidden;
}

.data-table thead {
    background-color: #2c3e50;
    color: white;
}

.data-table th {
    padding: 15px;
    text-align: left;
    font-weight: 600;
}

.data-table td {
    padding: 15px;
    border-bottom: 1px solid #eee;
}

.data-table tbody tr:hover {
    background-color: #f9f9f9;
}

.data-table tbody tr:last-child td {
    border-bottom: none;
}

.actions {
    display: flex;
    gap: 8px;
}

/* Flash Messages */
.flash-messages {
    margin-bottom: 20px;
}

.alert {
    padding: 15px;
    border-radius: 4px;
    margin-bottom: 10px;
}

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

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

/* Empty State */
.empty-state {
    background: white;
    padding: 60px 20px;
    text-align: center;
    border-radius: 8px;
    box-shadow: 0 2px 4px rgba(0,0,0,0.1);
}

.empty-state p {
    font-size: 1.1rem;
    color: #666;
}

.empty-state a {
    color: #3498db;
    text-decoration: none;
}

.empty-state a:hover {
    text-decoration: underline;
}

/* Responsive */
@media (max-width: 768px) {
    .nav-container {
        flex-direction: column;
        gap: 15px;
    }

    .nav-links {
        flex-wrap: wrap;
        justify-content: center;
    }

    .page-header {
        flex-direction: column;
        align-items: flex-start;
        gap: 15px;
    }

    .hours-grid {
        grid-template-columns: repeat(2, 1fr);
    }

    .form-row {
        grid-template-columns: 1fr;
    }
}