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

body {
    font-family: Arial, sans-serif;
    line-height: 1.6;
    color: #333;
}

header {
    background-color: #4CAF50;
    padding: 1rem;
}

nav ul {
    display: flex;
    list-style: none;
    justify-content: center;
}

nav ul li {
    margin: 0 1rem;
}

nav ul li a {
    color: white;
    text-decoration: none;
}

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

.hero {
    text-align: center;
    padding: 2rem 0;
    background-color: #f9f9f9;
    border-radius: 5px;
    margin-bottom: 2rem;
}

.features {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(300px, 1fr));
    gap: 2rem;
    margin: 2rem 0;
}

.feature {
    background-color: #f9f9f9;
    padding: 1.5rem;
    border-radius: 5px;
    box-shadow: 0 2px 4px rgba(0,0,0,0.1);
}

.feature h3 {
    color: #4CAF50;
    margin-top: 0;
}

.about, .contact, .thank-you {
    max-width: 800px;
    margin: 0 auto;
}

.form-group {
    margin-bottom: 1rem;
}

.form-group label {
    display: block;
    margin-bottom: 0.5rem;
}

.form-group input,
.form-group textarea {
    width: 100%;
    padding: 0.5rem;
    border: 1px solid #ddd;
    border-radius: 3px;
}

button {
    background-color: #4CAF50;
    color: white;
    border: none;
    padding: 0.5rem 1rem;
    cursor: pointer;
    border-radius: 3px;
}

.btn {
    display: inline-block;
    background-color: #4CAF50;
    color: white;
    padding: 0.5rem 1rem;
    text-decoration: none;
    border-radius: 3px;
    margin-top: 1rem;
}

footer {
    text-align: center;
    padding: 1rem;
    background-color: #f4f4f4;
    margin-top: 2rem;
}

/* Time tracking specific styles */
.timetrack-container {
    max-width: 800px;
    margin: 0 auto 3rem auto;
}

.timer-section {
    background-color: #f5f5f5;
    padding: 2rem;
    border-radius: 5px;
    margin-bottom: 2rem;
    text-align: center;
    box-shadow: 0 2px 4px rgba(0,0,0,0.1);
}

#timer {
    font-size: 3rem;
    font-weight: bold;
    margin: 1rem 0;
    font-family: monospace;
    color: #333;
}

.arrive-btn {
    background-color: #4CAF50;
    font-size: 1.2rem;
    padding: 0.8rem 2rem;
    transition: background-color 0.3s;
}

.arrive-btn:hover {
    background-color: #45a049;
}

.leave-btn {
    background-color: #f44336;
    font-size: 1.2rem;
    padding: 0.8rem 2rem;
    transition: background-color 0.3s;
}

.leave-btn:hover {
    background-color: #d32f2f;
}

.time-history {
    width: 100%;
    border-collapse: collapse;
    box-shadow: 0 2px 4px rgba(0,0,0,0.1);
}

.time-history th, .time-history td {
    padding: 0.8rem;
    text-align: left;
    border-bottom: 1px solid #ddd;
}

.time-history th {
    background-color: #f2f2f2;
    font-weight: bold;
}

.time-history tr:hover {
    background-color: #f5f5f5;
}

.button-group {
    display: flex;
    justify-content: center;
    gap: 1rem;
    margin-top: 1rem;
}

.pause-btn {
    background-color: #ff9800;
    font-size: 1.2rem;
    padding: 0.8rem 2rem;
    transition: background-color 0.3s;
}

.pause-btn:hover {
    background-color: #f57c00;
}

.resume-btn {
    background-color: #2196F3;
    font-size: 1.2rem;
    padding: 0.8rem 2rem;
    transition: background-color 0.3s;
}

.resume-btn:hover {
    background-color: #1976D2;
}

.break-info {
    color: #ff9800;
    font-weight: bold;
    margin: 0.5rem 0;
}

.break-total {
    color: #666;
    font-size: 0.9rem;
    margin: 0.5rem 0;
}

.notification {
    position: fixed;
    top: 20px;
    right: 20px;
    padding: 15px 25px;
    background-color: #4CAF50;
    color: white;
    border-radius: 4px;
    box-shadow: 0 2px 10px rgba(0,0,0,0.2);
    z-index: 1000;
    animation: fadeIn 0.3s, fadeOut 0.3s 2.7s;
}

@keyframes fadeIn {
    from { opacity: 0; transform: translateY(-20px); }
    to { opacity: 1; transform: translateY(0); }
}

@keyframes fadeOut {
    from { opacity: 1; transform: translateY(0); }
    to { opacity: 0; transform: translateY(-20px); }
}

.config-container {
    max-width: 800px;
    margin: 0 auto 3rem auto;
    padding: 1rem;
    background-color: #f9f9f9;
    border-radius: 8px;
    box-shadow: 0 2px 4px rgba(0, 0, 0, 0.1);
}

.form-section {
    border: 1px solid #e0e0e0;
    border-radius: 5px;
    padding: 1rem;
    margin-bottom: 1.5rem;
    background-color: #f9f9f9;
}

.form-section h3 {
    margin-top: 0;
    margin-bottom: 1rem;
    color: #333;
    font-size: 1.2rem;
}

.config-form .form-group {
    margin-bottom: 1.5rem;
}

.config-form label {
    display: block;
    margin-bottom: 0.5rem;
    font-weight: bold;
}

.config-form small {
    display: block;
    color: #666;
    margin-top: 0.25rem;
}

.btn-primary {
    background-color: #007bff;
    color: white;
    border: none;
    padding: 0.5rem 1rem;
    border-radius: 4px;
    cursor: pointer;
    font-size: 1rem;
}

.btn-primary:hover {
    background-color: #0069d9;
}

.alert {
    padding: 0.75rem 1rem;
    margin-bottom: 1rem;
    border-radius: 4px;
}

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

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