:root {
    --bg-pastel: #FFE4E1;
    --btn-yellow: #FFF9E6;
    --text-dark: #2B2B2B;
    --accent-pink: #FF6F91;
    --transition-speed: 0.2s;
    --font-serif: 'Playfair Display', serif;
    --font-sans: 'Inter', sans-serif;
}

* {
    margin: 0;
    padding: 0;
    box-sizing: border-box;
}

html, body {
    height: 100%;
}

/* Centrado total de la página */
body {
    font-family: var(--font-sans);
    background-color: var(--bg-pastel);
    color: var(--text-dark);
    line-height: 1.6;
    display: flex;
    justify-content: center;
    align-items: center;
    min-height: 100vh;
    padding: 0 1rem;
    box-sizing: border-box;
}

/* Pantalla (centrada y con ancho máximo) */
.screen {
    background: rgba(255,255,255,0.8);
    border-radius: 12px;
    box-shadow: 0 4px 12px rgba(0,0,0,0.1);
    width: 90%;
    max-width: 400px;
    padding: 1.5rem;
    text-align: center;
    opacity: 1;
    transform: translateY(0);
    transition: opacity var(--transition-speed) ease, transform var(--transition-speed) ease;
}

.screen.hidden {
    opacity: 0;
    transform: translateY(-20px);
    pointer-events: none;
}

/* Título y subtítulo */
#screen1 h1 {
    font-family: var(--font-serif);
    font-size: 2rem;
    margin-bottom: 0.5rem;
}

#screen1 p {
    font-size: 1.1rem;
    margin-bottom: 1.5rem;
    letter-spacing: 0.5px;
}

/* Contenedor de botones */
.button-container {
    display: flex;
    gap: 1rem;
    justify-content: center;
    margin-top: 1rem;
}

/* Botones */
.btn {
    flex: 1;
    min-width: 80px;
    padding: 0.75rem 1rem;
    font-size: 1rem;
    border: none;
    border-radius: 8px;
    cursor: pointer;
    transition: background-color var(--transition-speed) ease,
                transform var(--transition-speed) ease;
    font-weight: 600;
}

.btn-yes {
    background-color: var(--btn-yellow);
    color: var(--text-dark);
}

.btn-no {
    background-color: var(--btn-yellow);
    color: var(--text-dark);
    position: relative; /* para movimiento absoluto */
}

.btn:hover {
    opacity: 0.9;
    transform: scale(1.02);
}

/* Responsivo */
@media (max-width: 480px) {
    .button-container {
        flex-direction: column;
    }
    .btn {
        padding: 1rem;
        font-size: 1.1rem;
    }
    .screen {
        padding: 1rem;
    }
}