/* --- Variables y Estilos Base --- */
:root {
    --bg-color: #121212;
    --surface-color: #1e1e1e;
    --primary-color: #0d6efd;
    --primary-hover-color: #0b5ed7;
    --secondary-color: #495057;
    --text-color: #e0e0e0;
    --text-muted-color: #a0a0a0;
    --border-color: #343a40;
    --border-radius: 8px;
    --font-family: -apple-system, BlinkMacSystemFont, 'Segoe UI', Roboto, Helvetica, Arial, sans-serif, 'Apple Color Emoji', 'Segoe UI Emoji';
}

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

html {
    font-size: 16px;
}

body {
    font-family: var(--font-family);
    background-color: var(--bg-color);
    color: var(--text-color);
    line-height: 1.6;
}

.container {
    max-width: 900px;
    margin: 0 auto;
    padding: 0 1.5rem;
}

/* --- Cabecera --- */
.header {
    background-color: var(--surface-color);
    padding: 2rem 0;
    border-bottom: 1px solid var(--border-color);
    text-align: center;
}

.header h1 {
    font-size: 2.5rem;
    font-weight: 700;
    margin-bottom: 0.5rem;
}

.header h1 span {
    color: var(--text-muted-color);
    font-weight: 400;
}

.header p {
    font-size: 1.1rem;
    color: var(--text-muted-color);
}


/* --- Contenido Principal y Secciones --- */
.main-content {
    padding: 3rem 0;
}

.converter-section {
    background-color: var(--surface-color);
    border-radius: var(--border-radius);
    padding: 2rem;
    margin-bottom: 3rem;
    border: 1px solid var(--border-color);
    box-shadow: 0 4px 15px rgba(0, 0, 0, 0.2);
}

.converter-grid {
    display: grid;
    grid-template-columns: 1fr;
    gap: 2rem;
}

@media (min-width: 768px) {
    .converter-grid {
        grid-template-columns: 1fr 1fr;
    }
}

.converter-panel label {
    display: block;
    font-weight: 600;
    margin-bottom: 0.75rem;
    color: var(--text-muted-color);
}

.textarea-container {
    position: relative;
    height: 200px;
}

.converter-panel textarea {
    width: 100%;
    height: 100%;
    background-color: var(--bg-color);
    color: var(--text-color);
    border: 1px solid var(--border-color);
    border-radius: var(--border-radius);
    padding: 1rem;
    font-family: 'Menlo', 'Consolas', monospace;
    font-size: 1rem;
    resize: none;
    transition: border-color 0.2s, box-shadow 0.2s;
}

.converter-panel textarea:focus {
    outline: none;
    border-color: var(--primary-color);
    box-shadow: 0 0 0 3px rgba(13, 110, 253, 0.25);
}

.panel-buttons {
    display: flex;
    gap: 0.75rem;
    margin-top: 1rem;
}

.btn {
    font-family: var(--font-family);
    padding: 0.75rem 1.25rem;
    border: none;
    border-radius: var(--border-radius);
    font-size: 0.95rem;
    font-weight: 600;
    cursor: pointer;
    transition: background-color 0.2s, transform 0.1s;
}
.btn:active {
    transform: translateY(1px);
}

.btn-primary {
    background-color: var(--primary-color);
    color: white;
    flex-grow: 1; /* Ocupa el espacio restante */
}
.btn-primary:hover {
    background-color: var(--primary-hover-color);
}

.btn-secondary {
    background-color: var(--secondary-color);
    color: white;
}
.btn-secondary:hover {
    background-color: #5a6268;
}

/* Ocultamos los botones de fallback con JS habilitado */
.js-enabled .form-fallback-buttons {
    display: none;
}
.form-fallback-buttons {
    display: flex;
    justify-content: space-between;
    margin-top: 1.5rem;
}

.error-banner {
    background-color: #dc3545;
    color: white;
    padding: 1rem;
    border-radius: var(--border-radius);
    margin-top: 1.5rem;
    text-align: center;
}

/* --- Sección de Contenido de Texto (SEO) --- */
.content-section article {
    background: rgba(255, 255, 255, 0.02);
    padding: 2rem;
    border-radius: var(--border-radius);
}

.content-section h2 {
    font-size: 1.8rem;
    margin-bottom: 1rem;
    padding-bottom: 0.5rem;
    border-bottom: 1px solid var(--border-color);
}

.content-section h3 {
    font-size: 1.4rem;
    margin-top: 2rem;
    margin-bottom: 1rem;
}

.content-section p, .content-section li {
    margin-bottom: 1rem;
    color: var(--text-muted-color);
}

.content-section a {
    color: var(--primary-color);
    text-decoration: none;
}
.content-section a:hover {
    text-decoration: underline;
}

.content-section code {
    background-color: var(--surface-color);
    padding: 0.2em 0.4em;
    border-radius: 4px;
    font-family: 'Menlo', 'Consolas', monospace;
    font-size: 0.9em;
}

.content-section ol {
    padding-left: 1.5rem;
}

/* --- Tabla de Ejemplos --- */
.content-section table {
    width: 100%;
    border-collapse: collapse;
    margin-top: 1.5rem;
    font-size: 0.95rem;
}

.content-section th, .content-section td {
    padding: 0.8rem 1rem;
    border: 1px solid var(--border-color);
    text-align: left;
}

.content-section th {
    background-color: var(--surface-color);
    font-weight: 600;
}

.content-section tr:nth-child(even) {
    background-color: rgba(30, 30, 30, 0.5);
}

/* --- Pie de Página --- */
.footer {
    text-align: center;
    padding: 2rem 0;
    margin-top: 2rem;
    border-top: 1px solid var(--border-color);
    color: var(--text-muted-color);
    font-size: 0.9rem;
}