:root {
    --color-principal: #1E3A8A;
    --color-secundario: #FBBF24;
    --color-exito: #28a745;
    --color-menta-suave: #A7F3D0;
    --color-beige: #FDF6EC;
    --color-gris-hielo: #E5E7EB;
    --color-gris-azulado: #CBD5E1;
    --color-gris-navegador: #4B5563;
    --color-azul-metalico: #065b97;
    --color-azure-links: azure;
    --fuente: 'Courier New', Courier, monospace;
    --tamaño-fuente: 34px;
}

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

body {
    margin: 0;
    padding: 2rem;
    font-size: 17px;
    background-color: var(--color-gris-hielo);
    font-family: Arial, Helvetica, sans-serif;
    min-height: 100vh;
    display: flex;
    flex-direction: column;
    align-items: center;
}

h1 {
    color: var(--color-principal);
    text-align: center;
    margin-bottom: 1rem;
}

/* ===== NAVBAR ===== */
nav {
    background: var(--color-gris-navegador);
    border-radius: 5px;
    width: 100%;
    max-width: 1200px;
    margin-bottom: 1rem;
}

nav ul {
    display: flex;
    flex-wrap: wrap;
    justify-content: center;
    align-items: center;
    margin: 0;
    padding: 0.5rem;
    list-style: none;
}

nav ul li {
    margin: 0.5rem 1rem;
}

a {
    /* color: var(--color-azure-links); */
    text-decoration: none;
    font-weight: 500;
    transition: color 0.3s ease;
}

/* a:hover {
    color: var(--color-secundario);
} */

/* ===== MAIN ===== */
#main {
    display: flex;
    justify-content: center;
    width: 100%;
}

main {
    width: 100%;
    max-width: 62rem;
}

.container {
    width: 100%;
    max-width: 750px;
    padding: 2rem;
    background: var(--color-gris-azulado);
    border-radius: 5px;
    box-shadow: 0 5px 10px var(--color-gris-navegador);
}

/* ===== TEXTAREA ===== */
#text {
    width: 100%;
    height: 120px;
    padding: 1.5rem;
    font-size: 1.6rem;
    font-family: inherit;
    color: var(--color-principal);
    border: 2px solid var(--color-azul-metalico);
    border-radius: 7px;
    resize: vertical;
    box-shadow: 0 4px 6px rgba(0, 0, 0, 0.10);
    transition: all 300ms ease;
}

#text:focus {
    outline: none;
    border-color: #0a9693;
    box-shadow: 0 0 8px #0a9693;
}

/* ===== OUTPUT ===== */
#output {
    margin-top: 2rem;
    width: 100%;
    background-color: white;
    border-radius: 7px;
    padding: 1.5rem;
    box-shadow: 0 4px 8px rgba(0, 0, 0, 0.10);
    white-space: pre-wrap;
    color: #264653;
    min-height: 100px;
}

/* PIE DE PÁGINA */
footer {
    color: var(--color-principal);
    text-align: center;
    padding: 1rem;
    font-size: 0.9rem;
}

.link_green {
    color: #34D399;
}

/* ===== RESPONSIVE DESIGN ===== */
@media (max-width: 992px) {
    body {
        padding: 1.5rem;
        font-size: 18px;
    }
    .container {
        padding: 1.5rem;
    }
    #text {
        font-size: 1.4rem;
        padding: 1rem;
    }
}

@media (max-width: 768px) {
    nav ul {
        flex-direction: column;
    }
    nav ul li {
        margin: 0.3rem 0;
    }
    #text {
        font-size: 1.2rem;
    }
}

@media (max-width: 480px) {
    body {
        padding: 1rem;
        font-size: 16px;
    }
    h1 {
        font-size: 1.6rem;
    }
    .container {
        padding: 1rem;
    }
    #text {
        font-size: 1rem;
        height: 100px;
    }
    #output {
        font-size: 0.9rem;
        padding: 1rem;
    }
}