body {
    font-family: 'Nunito', sans-serif;
    margin: 0;
    padding: 0;
    background-color: #FFF0F5; /* Lavender Blush - soft pink background */
    color: #555;
    line-height: 1.6;
    background-image: url('cute-background.png');
    background-repeat: repeat; /* Or no-repeat if it's a full bg image */
    background-size: cover; /* if it's a large background image */
    background-attachment: fixed; /* Optional for parallax effect */
}

#app-container {
    max-width: 800px;
    margin: 20px auto;
    padding: 15px;
    background-color: rgba(255, 255, 255, 0.9); /* Slightly transparent white */
    box-shadow: 0 0 15px rgba(255, 105, 180, 0.3); /* Pink shadow */
    border-radius: 15px;
    border: 2px solid #FFB6C1; /* LightPink border */
}

.main-header {
    text-align: center;
    padding-bottom: 20px;
    border-bottom: 1px dashed #FFC0CB; /* Pink */
    margin-bottom: 20px;
}

.main-header h1 {
    color: #FF69B4; /* HotPink */
    margin-bottom: 5px;
    font-size: 2em; /* Responsive font size */
}

.main-header p {
    color: #FF7F9E; /* Watermelon Pink */
    font-size: 1.1em;
}

#age-selection-screen h2 {
    text-align: center;
    color: #DB7093; /* PaleVioletRed */
    margin-bottom: 20px;
}

.age-buttons {
    display: flex;
    flex-direction: column;
    gap: 15px;
    align-items: center;
}

.age-btn, .back-btn, .tab-button, #submit-review-btn {
    background-color: #FFC0CB; /* Pink */
    color: #fff;
    border: none;
    padding: 12px 20px;
    border-radius: 25px;
    font-size: 1.1em;
    cursor: pointer;
    transition: background-color 0.3s ease, transform 0.2s ease;
    box-shadow: 0 4px 6px rgba(0,0,0,0.1);
    font-weight: bold;
}

.age-btn:hover, .back-btn:hover, .tab-button:hover, #submit-review-btn:hover {
    background-color: #FFB6C1; /* LightPink */
    transform: translateY(-2px);
}

.age-btn:active, .back-btn:active, .tab-button:active, #submit-review-btn:active {
    transform: translateY(1px);
    box-shadow: 0 2px 3px rgba(0,0,0,0.1);
}

.back-btn {
    background-color: #FF7F9E; /* Watermelon Pink */
    margin-bottom: 20px;
    display: block; /* Or inline-block */
    width: fit-content;
}

#content-area h2, #content-area h3 {
    color: #DB7093; /* PaleVioletRed */
    text-align: center;
}
#content-area h3 {
    margin-top: 30px;
    margin-bottom: 15px;
    border-bottom: 1px solid #FFD1DC; /* Lighter Pink */
    padding-bottom: 5px;
}
#content-area h4 {
    color: #FF69B4; /* HotPink */
    margin-top: 20px;
    margin-bottom: 10px;
}

.tabs {
    display: flex;
    justify-content: center;
    flex-wrap: wrap;
    gap: 10px;
    margin-bottom: 20px;
}

.tab-button {
    background-color: #FFD1DC; /* Lighter Pink */
    color: #C71585; /* MediumVioletRed */
    padding: 10px 15px;
    font-size: 0.95em;
}

.tab-button.active {
    background-color: #FF69B4; /* HotPink */
    color: white;
    box-shadow: 0 2px 8px rgba(255, 105, 180, 0.5);
}

.tab-content {
    display: none;
    padding: 15px;
    border: 1px solid #FFD1DC; /* Lighter Pink */
    border-radius: 10px;
    background-color: #fffafa; /* Snow - very light pinkish white */
}

.tab-content.active-content {
    display: block;
}

.exercise-item {
    background-color: #FFFFFF;
    margin-bottom: 15px;
    padding: 15px;
    border-radius: 8px;
    box-shadow: 0 2px 5px rgba(0,0,0,0.05);
    border-left: 5px solid #FFC0CB; /* Pink */
}

.exercise-item summary {
    font-weight: bold;
    color: #C71585; /* MediumVioletRed */
    cursor: pointer;
    font-size: 1.1em;
}
.exercise-item summary::-webkit-details-marker {
    color: #FF69B4; /* HotPink */
}
.exercise-item p {
    margin-top: 10px;
    margin-left: 10px; /* Indent content under summary */
}

.important-note {
    background-color: #FFF0F5; /* LavenderBlush */
    padding: 10px;
    border-radius: 5px;
    border-left: 3px solid #FF69B4; /* HotPink */
    margin-top: 15px;
    font-style: italic;
}

ul {
    list-style-type: '🌸 '; /* Cute bullet point */
    padding-left: 25px;
}
li {
    margin-bottom: 8px;
}

#review-form-container {
    background-color: #FFFAFA; /* Snow */
    padding: 20px;
    border-radius: 10px;
    margin-bottom: 20px;
    box-shadow: 0 2px 10px rgba(0,0,0,0.08);
}

#review-form-container label {
    display: block;
    margin-top: 10px;
    margin-bottom: 5px;
    color: #C71585; /* MediumVioletRed */
    font-weight: bold;
}

#review-form-container input[type="text"],
#review-form-container textarea {
    width: calc(100% - 22px); /* Full width minus padding and border */
    padding: 10px;
    border: 1px solid #FFD1DC; /* Lighter Pink */
    border-radius: 5px;
    margin-bottom: 10px;
    background-color: white;
}
#review-form-container input[type="text"]:focus,
#review-form-container textarea:focus {
    outline: none;
    border-color: #FF69B4; /* HotPink */
    box-shadow: 0 0 5px rgba(255, 105, 180, 0.5);
}

.star-rating {
    cursor: pointer;
    margin-bottom: 10px;
    display: flex;
    gap: 5px; /* Space between stars */
    align-items: center;
}
img.star {
    width: 30px;
    height: 30px;
    transition: transform 0.1s ease-out;
    display: block; /* Ensure image displays cleanly */
}
img.star:hover {
   transform: scale(1.15);
}

#reviews-list .review-item {
    background-color: #FFF5FA; /* LavenderBlush variant */
    padding: 15px;
    border-radius: 8px;
    margin-bottom: 10px;
    border-left: 4px solid #FFB6C1; /* LightPink */
    box-shadow: 0 1px 3px rgba(0,0,0,0.05);
}
#reviews-list .review-item strong {
    color: #DB7093; /* PaleVioletRed */
}
#reviews-list .review-stars {
    color: #FFC0CB; /* Pink */
    margin-bottom: 5px;
}

footer {
    text-align: center;
    margin-top: 30px;
    padding-top: 20px;
    border-top: 1px dashed #FFC0CB; /* Pink */
    color: #FF7F9E; /* Watermelon Pink */
    font-size: 0.9em;
}

#diet-meal-ideas-container h5 {
    color: #C71585; /* MediumVioletRed */
    margin-top: 15px;
    margin-bottom: 5px;
    font-size: 1.05em;
}

#diet-key-principles-list li,
#diet-breakfast-ideas li,
#diet-lunch-dinner-ideas li,
#diet-snack-ideas li {
    margin-bottom: 10px; /* Add more space between diet list items */
}

#diet-key-principles-list strong { /* Style for principle titles */
    color: #DB7093; /* PaleVioletRed */
}

#help-button {
    position: fixed;
    bottom: 0;
    right: 0;
    display: flex;
    justify-content: center;
    align-items: center;
    width: 1px; 
    height: 1px; 
    background-color: #FFC0CB; 
    color: transparent; 
    border-radius: 50%; 
    font-size: 0; 
    font-weight: bold;
    text-decoration: none;
    box-shadow: 0 0 1px rgba(0,0,0,0.1); 
    transition: background-color 0.3s ease, transform 0.2s ease, box-shadow 0.2s ease;
    z-index: 1000;
    padding: 0; 
    margin: 0; 
    overflow: hidden; 
    line-height: 1; 
}

#help-button:hover {
    background-color: #FFB6C1; 
    transform: scale(50); 
    box-shadow: 0 2px 4px rgba(0,0,0,0.1);
    color: #fff; 
    font-size: 0.8em; 
    width: 20px; 
    height: 20px; 
}

#help-button:active {
    transform: scale(45);
}

/* Mobile responsiveness */
@media (max-width: 600px) {
    #app-container {
        margin: 10px;
        padding: 10px;
    }
    .main-header h1 {
        font-size: 1.8em;
    }
    .main-header p {
        font-size: 1em;
    }
    .age-btn, .back-btn, .tab-button, #submit-review-btn {
        padding: 10px 15px;
        font-size: 1em;
    }
    .tabs {
        flex-direction: column; 
    }
    .tab-button {
        width: 100%;
        box-sizing: border-box;
    }

    #help-button {
        width: 1px; 
        height: 1px; 
        font-size: 0; 
        bottom: 0; 
        right: 0; 
        box-shadow: 0 0 1px rgba(0,0,0,0.1); 
        color: transparent;
    }
     #help-button:hover {
        transform: scale(50); 
        box-shadow: 0 2px 4px rgba(0,0,0,0.1);
        color: #fff;
        font-size: 0.8em;
         width: 20px; 
        height: 20px; 
    }
}