:root {
    --bg-dark: #121212;
    --bg-light: #f0f0f0;
    --text-dark: #ffffff;
    --text-light: #111111;
    --primary: #4CAF50;
    --secondary: #FFC107;
    --absent: #444;
    --correct: #6aaa64;
    --present: #c9b458;
    --border-radius: 8px;
    --transition-speed: 0.3s;
    --font-stack: 'Segoe UI', sans-serif;
}

body {
    font-family: var(--font-stack);
    margin: 0;
    padding: 0;
    background-color: var(--bg-dark);
    color: var(--text-dark);
    transition: background-color var(--transition-speed), color var(--transition-speed);
}

    body.light-mode {
        background-color: var(--bg-light);
        color: var(--text-light);
    }

header {
    text-align: center;
    padding: 1em;
    border-bottom: 1px solid #333;
}

h1 {
    font-size: 2rem;
    margin-bottom: 0.5em;
}

.mode-toggle, .social-links {
    margin: 0.5em auto;
    display: flex;
    justify-content: center;
    flex-wrap: wrap;
    gap: 1em;
}

button, .social-button {
    padding: 0.6em 1.2em;
    font-size: 1em;
    border: none;
    border-radius: var(--border-radius);
    background-color: var(--primary);
    color: white;
    cursor: pointer;
    transition: background-color var(--transition-speed);
}

    button:hover, .social-button:hover {
        background-color: #388e3c;
    }

.social-button {
    text-decoration: none;
    background-color: #1da1f2;
}

#themeToggle {
    position: absolute;
    top: 1rem;
    right: 1rem;
    background: none;
    font-size: 1.4em;
    padding: 0.2em 0.5em;
}

main {
    max-width: 600px;
    margin: 2em auto;
    padding: 0 1em;
    text-align: center;
}

#ad-container {
    margin-top: 2em;
}

    #ad-container ins {
        display: block;
        margin: 1em 0;
    }

#clues p {
    text-align: left;
    margin: 0.5em 0;
    padding: 0.3em 0.5em;
    background-color: rgba(255, 255, 255, 0.05);
    border-radius: var(--border-radius);
}

#board {
    margin: 1.5em 0;
}

.guess-row {
    display: flex;
    justify-content: center;
    margin-bottom: 0.4em;
}

.letter-box {
    width: 3em;
    height: 3em;
    margin: 0 0.2em;
    line-height: 3em;
    text-align: center;
    font-size: 1.5em;
    font-weight: bold;
    border-radius: var(--border-radius);
    text-transform: uppercase;
    transition: background-color var(--transition-speed);
}

.correct {
    background-color: var(--correct);
    color: white;
}

.present {
    background-color: var(--present);
    color: white;
}

.absent {
    background-color: var(--absent);
    color: white;
}

#inputSection {
    display: flex;
    justify-content: center;
    gap: 0.5em;
    margin-bottom: 1em;
}

#guessInput {
    padding: 0.6em;
    font-size: 1.1em;
    width: 150px;
    border-radius: var(--border-radius);
    border: 1px solid #888;
}

#submitBtn {
    font-size: 1.1em;
}

#message {
    margin-top: 1em;
    font-weight: bold;
    font-size: 1.1em;
}

#returnBtn {
    margin-top: 2em;
}

@media (max-width: 600px) {
    .letter-box {
        width: 2.5em;
        height: 2.5em;
        font-size: 1.3em;
    }

    #guessInput {
        width: 100px;
    }
}