:root {
    --bg-color: #f0f2f5;
    --container-bg: #fff;
    --text-color: #333;
    --secondary-text-color: #555;
    --btn-bg: #007bff;
    --btn-hover-bg: #0056b3;
    --border-color: #ccc;
    --card-shadow: rgba(0, 0, 0, 0.1);
}

.dark-mode {
    --bg-color: #121212;
    --container-bg: #1e1e1e;
    --text-color: #e0e0e0;
    --secondary-text-color: #a0a0a0;
    --btn-bg: #1e88e5;
    --btn-hover-bg: #1565c0;
    --border-color: #444;
    --card-shadow: rgba(0, 0, 0, 0.3);
}

body {
    font-family: 'Helvetica Neue', sans-serif;
    display: flex;
    flex-direction: column; /* Allow content to flow vertically */
    justify-content: center;
    align-items: center;
    min-height: 100vh;
    background-color: var(--bg-color);
    margin: 0;
    padding: 20px;
    transition: background-color 0.3s ease;
    color: var(--text-color); /* Apply text color to body */
}

.container {
    text-align: center;
    background-color: var(--container-bg);
    padding: 40px;
    border-radius: 15px;
    box-shadow: 0 10px 20px var(--card-shadow);
    width: 100%;
    max-width: 800px; /* Increased max-width for better layout */
    transition: background-color 0.3s ease, box-shadow 0.3s ease;
    margin-bottom: 20px;
}

h1, h2 {
    color: var(--text-color);
    margin-bottom: 20px;
}

#theme-toggle-btn {
    position: fixed;
    top: 20px;
    right: 20px;
    width: 50px;
    height: 50px;
    border-radius: 50%;
    border: none;
    background-color: var(--container-bg);
    color: var(--text-color);
    font-size: 24px;
    cursor: pointer;
    box-shadow: 0 4px 8px var(--card-shadow);
    transition: all 0.3s ease;
    z-index: 1000;
}

#theme-toggle-btn:hover {
    transform: scale(1.1);
}

.member-search-section {
    display: flex;
    flex-wrap: wrap; /* Allow wrapping on smaller screens */
    justify-content: center;
    gap: 10px;
    margin-bottom: 30px;
}

.member-search-section input[type="text"] {
    padding: 12px;
    border: 1px solid var(--border-color);
    border-radius: 8px;
    background-color: var(--container-bg);
    color: var(--text-color);
    width: calc(50% - 15px); /* Two inputs per row on larger screens */
    max-width: 300px;
    box-sizing: border-box; /* Include padding in width */
    transition: border-color 0.3s ease, background-color 0.3s ease;
}

.member-search-section input[type="text"]::placeholder {
    color: var(--secondary-text-color);
}

.member-search-section input[type="text"]:focus {
    border-color: var(--btn-bg);
    outline: none;
}

#search-member-btn {
    padding: 12px 25px;
    border: none;
    border-radius: 8px;
    background-color: var(--btn-bg);
    color: #fff;
    font-size: 16px;
    cursor: pointer;
    transition: background-color 0.3s ease;
}

#search-member-btn:hover {
    background-color: var(--btn-hover-bg);
}

#member-results {
    margin-top: 20px;
    padding: 20px;
    border: 1px dashed var(--border-color); /* Dashed border to indicate empty state */
    border-radius: 10px;
    background-color: var(--container-bg);
    color: var(--secondary-text-color);
    text-align: center;
    min-height: 100px;
    display: flex;
    flex-direction: column;
    justify-content: center;
    align-items: center;
    line-height: 1.6;
    transition: background-color 0.3s ease, border-color 0.3s ease;
}

.member-info-card {
    border: 1px solid var(--border-color);
    border-radius: 8px;
    padding: 15px;
    margin-bottom: 10px;
    background-color: var(--container-bg);
    box-shadow: 0 2px 4px var(--card-shadow);
    text-align: left;
    width: 100%;
    box-sizing: border-box;
}

.member-info-card:last-child {
    margin-bottom: 0;
}

.member-info-card h3 {
    color: var(--text-color);
    margin-top: 0;
    margin-bottom: 10px;
    border-bottom: 1px solid var(--border-color);
    padding-bottom: 5px;
}

.member-info-card p {
    color: var(--secondary-text-color);
    margin: 5px 0;
}

.member-info-card p strong {
    color: var(--text-color);
}

.error-message {
    color: #e74c3c; /* Red color for error messages */
    font-weight: bold;
}

.info-message {
    color: #3498db; /* Blue color for info messages */
    font-weight: bold;
}

.placeholder-text {
    color: var(--secondary-text-color);
    font-style: italic;
}

footer {
    text-align: center;
    padding: 20px;
    margin-top: 20px; /* Adjust margin for footer outside container */
    color: var(--secondary-text-color);
}

footer p {
    margin: 5px 0;
    font-size: 14px;
}

@media (max-width: 600px) {
    .container {
        padding: 20px; /* Reduce container padding on small screens */
    }

    h1 {
        font-size: 24px;
    }

    h2 {
        font-size: 20px;
    }

    .member-search-section input[type="text"] {
        width: 100%; /* Stack inputs on small screens */
    }
    .member-search-section {
        flex-direction: column;
        align-items: center;
    }

    footer {
        padding: 15px; /* Adjust footer padding */
    }
}