@import url('https://fonts.googleapis.com/css2?family=Poppins:wght@400;600&display=swap');

:root {
    --primary-color: #007bff;
    --secondary-color: #6c757d;
    --background-color: #f8f9fa;
    --surface-color: #ffffff;
    --text-color: #212529;
    --border-color: #dee2e6;
    --danger-color: #dc3545;
    --success-color: #28a745;
    --shadow: 0 4px 6px rgba(0, 0, 0, 0.1);
}

body {
    font-family: 'Poppins', sans-serif;
    background-color: var(--background-color);
    color: var(--text-color);
    margin: 0;
    padding: 20px;
    line-height: 1.6;
}

h1 {
    text-align: center;
    color: var(--primary-color);
    margin-bottom: 30px;
}

#activity-form {
    display: flex;
    flex-wrap: wrap;
    justify-content: center;
    gap: 15px;
    margin: 0 auto 40px auto;
    padding: 20px;
    background-color: var(--surface-color);
    border-radius: 8px;
    box-shadow: var(--shadow);
    max-width: 800px;
}

#activity-form input,
#activity-form select {
    padding: 12px;
    border: 1px solid var(--border-color);
    border-radius: 5px;
    font-size: 16px;
    flex-grow: 1;
}

#activity-form button {
    padding: 12px 25px;
    border: none;
    border-radius: 5px;
    background-color: var(--primary-color);
    color: white;
    font-size: 16px;
    font-weight: 600;
    cursor: pointer;
    transition: background-color 0.3s ease;
}

#activity-form button:hover {
    background-color: #0056b3;
}

#schedule {
    width: 100%;
    border-collapse: separate;
    border-spacing: 0;
    background-color: var(--surface-color);
    border-radius: 8px;
    box-shadow: var(--shadow);
    overflow: hidden; /* Ensures the border-radius clips the content */
}

th, td {
    padding: 15px;
    text-align: left;
    border-bottom: 1px solid var(--border-color);
}

th {
    background-color: var(--primary-color);
    color: white;
    font-weight: 600;
}

/* Zebra-striping for rows */
tbody tr:nth-child(even) {
    background-color: #f2f2f2;
}

td {
    vertical-align: top;
    min-height: 80px;
}

.activity {
    background-color: #e9ecef;
    padding: 8px 12px;
    margin-top: 10px;
    border-radius: 5px;
    display: flex;
    justify-content: space-between;
    align-items: center;
    border-left: 4px solid var(--success-color);
    animation: fadeIn 0.5s ease;
}

@keyframes fadeIn {
    from { opacity: 0; transform: translateY(-10px); }
    to { opacity: 1; transform: translateY(0); }
}

.delete-btn {
    background-color: var(--danger-color);
    color: white;
    border: none;
    padding: 5px 10px;
    border-radius: 5px;
    cursor: pointer;
    font-size: 12px;
    opacity: 0.8;
    transition: opacity 0.3s ease, transform 0.2s ease;
}

.delete-btn:hover {
    opacity: 1;
    transform: scale(1.1);
}