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

body {
    font-family: 'Arial', sans-serif;
    background: linear-gradient(135deg, #f5f7fa 0%, #ADD8E6 100%);
    min-height: 100vh;
    padding: 20px;
}

.container {
    max-width: 1000px;
    margin: 0 auto;
    text-align: center;
}

h1 {
    color: #4a5568;
    margin-bottom: 10px;
    font-size: 2.5rem;
}

p {
    color: #6c7a89;
    margin-bottom: 30px;
    font-size: 1.1rem;
}

.calendar {
    background-color: white;
    border-radius: 15px;
    box-shadow: 0 10px 30px rgba(0, 0, 0, 0.1);
    overflow: hidden;
}

.calendar-header {
    background-color: #006E33;
    color: white;
    padding: 20px;
}

.calendar-header h2 {
    font-size: 1.8rem;
}

.calendar-grid {
    display: grid;
    grid-template-columns: repeat(7, 1fr);
    gap: 2px;
    padding: 20px;
}

.calendar-day {
    border: 1px solid #e2e8f0;
    height: 80px;
    display: flex;
    flex-direction: column;
    align-items: center;
    justify-content: flex-start;
    padding: 5px;
    cursor: pointer;
    transition: all 0.3s ease;
    background-color: #f7fafc;
}

.calendar-day:hover {
    background-color: #edf2f7;
    transform: translateY(-2px);
}

.calendar-day .day-number {
    font-weight: bold;
    color: #4a5568;
}

.calendar-day.visited {
    background-color: #c6f6d5;
    border-color: #48bb78;
}

.calendar-day.outside {
    background-color: #f7fafc;
    color: #a0aec0;
    cursor: default;
}

/* Modal styles */
.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: #fefefe;
    margin: 5% auto;
    padding: 20px;
    border-radius: 10px;
    width: 80%;
    max-width: 600px;
    position: relative;
    animation: modalOpen 0.3s;
}

@keyframes modalOpen {
    from {
        opacity: 0;
        transform: translateY(-50px);
    }
    to {
        opacity: 1;
        transform: translateY(0);
    }
}

.close {
    color: #aaa;
    float: right;
    font-size: 28px;
    font-weight: bold;
    cursor: pointer;
    position: absolute;
    top: 10px;
    right: 20px;
}

.close:hover,
.close:focus {
    color: black;
    text-decoration: none;
}

.modal-body {
    padding-top: 30px;
}

.modal-body img {
    max-width: 100%;
    height: auto;
    border-radius: 8px;
    margin-bottom: 20px;
}

.modal-body p {
    font-size: 1.2rem;
    line-height: 1.6;
    color: #4a5568;
}

/* Responsive design */
@media (max-width: 768px) {
    .calendar-grid {
        grid-template-columns: repeat(7, 1fr);
    }
    
    .calendar-day {
        height: 60px;
        font-size: 0.8rem;
    }
    
    h1 {
        font-size: 2rem;
    }
}

@media (max-width: 480px) {
    .calendar-day {
        height: 50px;
        font-size: 0.7rem;
    }
    
    .modal-content {
        width: 90%;
    }
}