:root {
    --primary-color: #4A90E2;
    --secondary-color: #50E3C2;
    --background-color: #F7F9FB;
    --text-color: #333;
    --card-background-color: #FFFFFF;
    --shadow-color: rgba(0, 0, 0, 0.1);
    --font-family: 'Poppins', sans-serif;
}

body {
    font-family: var(--font-family);
    background-color: var(--background-color);
    background-image: url('data:image/svg+xml,%3Csvg width="6" height="6" viewBox="0 0 6 6" xmlns="http://www.w3.org/2000/svg"%3E%3Cg fill="%239C92AC" fill-opacity="0.1"%3E%3Cpath d="M5 0h1L0 6V5zM6 5v1H5z"/%3E%3C/g%3E%3C/svg%3E');
    color: var(--text-color);
    margin: 0;
    display: flex;
    justify-content: center;
    align-items: center;
    min-height: 100vh;
}

.app-container {
    width: 375px;
    height: 812px;
    background-color: var(--card-background-color);
    border-radius: 40px;
    box-shadow: 0 25px 50px -12px var(--shadow-color);
    overflow: hidden;
    display: flex;
    flex-direction: column;
}

.app-header {
    display: flex;
    justify-content: space-between;
    align-items: center;
    padding: 20px 30px;
    border-bottom: 1px solid #eee;
}

.logo {
    width: 40px;
    height: 40px;
    border-radius: 50%;
    object-fit: cover;
    box-shadow: 0 2px 4px var(--shadow-color);
}

.app-header h1 {
    font-size: 1.8rem;
    font-weight: 600;
    margin: 0;
    flex-grow: 1;
    text-align: center;
}

.back-button, .menu-button {
    font-size: 1.8rem;
    cursor: pointer;
    color: var(--primary-color);
    flex-basis: 40px; /* Ensure buttons have a fixed width */
    text-align: center;
}

main {
    flex-grow: 1;
    overflow-y: auto;
}

.screen {
    display: none;
    padding: 30px;
}

.screen.active {
    display: block;
}

#questions-screen .question {
    display: none;
}

#questions-screen .question.active {
    display: block;
}

.mood-prompt {
    text-align: center;
    font-size: 1.2rem;
    font-weight: 600;
    margin-bottom: 20px;
    color: var(--text-color);
}

.mood-tracker-container {
    display: grid;
    grid-template-columns: repeat(2, 1fr);
    gap: 20px;
    margin-bottom: 30px;
}

.mood-tracker {
    text-align: center;
    cursor: pointer;
    border-radius: 20px;
    padding: 20px;
    transition: transform 0.2s ease, box-shadow 0.2s ease;
}

.mood-tracker:hover, .mood-tracker.selected {
    transform: translateY(-5px);
    box-shadow: 0 10px 20px -5px rgba(0,0,0,0.1);
}

.mood-tracker.selected {
    background-color: var(--primary-color);
    color: white;
}

.mood-tracker .emoji {
    font-size: 5rem;
    margin-bottom: 10px;
    line-height: 1;
}

.mood-tracker span {
    font-weight: 600;
}


.primary-button, .secondary-button, .next-question, .submit-questions {
    width: 100%;
    padding: 15px;
    border-radius: 15px;
    border: none;
    font-size: 1.2rem;
    font-weight: 600;
    cursor: pointer;
    margin-bottom: 15px;
    box-shadow: 0 10px 20px -5px rgba(74, 144, 226, 0.3);
    transition: transform 0.2s ease;
}

.primary-button:hover, .secondary-button:hover, .next-question:hover, .submit-questions:hover {
    transform: translateY(-5px);
}

.primary-button, .next-question, .submit-questions {
    background-color: var(--primary-color);
    color: white;
}

.secondary-button {
    background-color: var(--card-background-color);
    color: var(--primary-color);
    border: 2px solid var(--primary-color);
}

form input, form textarea, .question textarea {
    width: 100%;
    padding: 20px;
    border: 2px solid #ddd;
    border-radius: 15px;
    margin-bottom: 15px;
    box-sizing: border-box;
    font-size: 1rem;
}

form textarea, .question textarea {
    height: 150px;
    resize: none;
}

.team-members {
    display: flex;
    justify-content: space-around;
    margin-bottom: 30px;
}

.team-member {
    width: 90px;
    height: 90px;
    border-radius: 50%;
    background: linear-gradient(45deg, var(--primary-color), var(--secondary-color));
    display: flex;
    flex-direction: column;
    align-items: center;
    justify-content: center;
    color: black;
    text-align: center;
}

.team-member .emoji {
    font-size: 4.6rem;
}

#menu-screen ul {
    list-style: none;
    padding: 0;
    margin: 0;
}

#menu-screen ul li a {
    display: block;
    padding: 20px 0;
    text-align: center;
    text-decoration: none;
    color: var(--text-color);
    font-size: 1.8rem;
    font-weight: 500;
}

.social-media {
    text-align: center;
    margin-top: 30px;
}

.social-media a {
    color: var(--primary-color);
    font-size: 2rem;
    margin: 0 15px;
    transition: color 0.2s ease;
}

.social-media a:hover {
    color: var(--secondary-color);
}