:root {
    --bg-color: #1a1a1a;
    --surface-color: #2c2c2c;
    --primary-color: #e0e0e0;
    --secondary-color: #a0a0a0;
    --accent-color: #4FD1D9;
    --success-color: #76d7c4;
    --border-radius: 8px;
    --font-family: -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto, Helvetica, Arial, sans-serif, "Apple Color Emoji", "Segoe UI Emoji";
}

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

html, body {
    background-color: var(--bg-color);
    color: var(--primary-color);
    font-family: var(--font-family);
    line-height: 1.6;
    min-height: 100vh;
}

body {
    padding: 2rem 1.5rem;
    display: flex;
    flex-direction: column;
}

.container {
    max-width: 1200px;
    margin: 0 auto;
    width: 100%;
    flex-grow: 1;
}

header {
    text-align: center;
    margin-bottom: 2rem;
}

header h1 {
    font-size: 2.5rem;
    font-weight: 600;
    letter-spacing: -1px;
}

.intro-text {
    text-align: center;
    max-width: 700px;
    margin: 0 auto 2.5rem;
    color: var(--secondary-color);
    font-size: 1.1rem;
    line-height: 1.7;
}

.search-controls {
    display: flex;
    flex-direction: column;
    gap: 1.5rem;
    margin-bottom: 2.5rem;
    position: sticky;
    top: 1rem;
    background-color: rgba(26, 26, 26, 0.85);
    backdrop-filter: blur(10px);
    -webkit-backdrop-filter: blur(10px);
    padding: 1.5rem;
    border-radius: var(--border-radius);
    z-index: 10;
}

#searchInput {
    width: 100%;
    padding: 0.8rem 1.2rem;
    font-size: 1.1rem;
    background-color: var(--surface-color);
    color: var(--primary-color);
    border: 2px solid #444;
    border-radius: var(--border-radius);
    transition: border-color 0.2s ease, box-shadow 0.2s ease;
}

#searchInput:focus {
    outline: none;
    border-color: var(--accent-color);
    box-shadow: 0 0 0 3px rgba(79, 209, 217, 0.3);
}

#categoryFilters {
    display: flex;
    flex-wrap: wrap;
    gap: 0.75rem;
    justify-content: center;
}

.category-btn {
    padding: 0.5rem 1rem;
    font-size: 0.9rem;
    font-weight: 500;
    background-color: var(--surface-color);
    color: var(--secondary-color);
    border: 1px solid #444;
    border-radius: 999px;
    cursor: pointer;
    transition: all 0.2s ease;
    user-select: none;
}

.category-btn:hover {
    background-color: #3a3a3a;
    color: var(--primary-color);
    border-color: #555;
}

.category-btn.active {
    background-color: var(--accent-color);
    color: var(--bg-color);
    border-color: var(--accent-color);
    font-weight: 600;
}

#characterGrid {
    display: grid;
    grid-template-columns: repeat(auto-fill, minmax(100px, 1fr));
    gap: 1rem;
    margin-bottom: 4rem;
}

.char-card {
    position: relative;
    display: flex;
    justify-content: center;
    align-items: center;
    height: 100px;
    background-color: var(--surface-color);
    border-radius: var(--border-radius);
    font-size: 3rem;
    cursor: pointer;
    transition: transform 0.2s ease, box-shadow 0.2s ease, border-color 0.2s ease, color 0.2s ease;
    user-select: none;
    overflow: hidden;
}

.char-card.emoji {
    font-size: 2.5rem;
}

.char-card:hover {
    transform: translateY(-5px);
    box-shadow: 0 8px 15px rgba(0, 0, 0, 0.2);
}

.char-card--space {
    font-size: 1.2rem !important;
    font-weight: 600;
    color: var(--secondary-color);
    border: 2px dashed #444;
    font-family: monospace;
}

.char-card--space:hover {
    border-color: var(--accent-color);
    color: var(--primary-color);
    background-color: #3a3a3a;
}

.copy-feedback {
    position: absolute;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    display: flex;
    justify-content: center;
    align-items: center;
    background-color: var(--success-color);
    color: var(--bg-color);
    font-size: 1rem;
    font-weight: 600;
    opacity: 0;
    transform: scale(0.8);
    transition: all 0.3s cubic-bezier(0.175, 0.885, 0.32, 1.275);
    pointer-events: none;
}

.char-card.copied .copy-feedback {
    opacity: 1;
    transform: scale(1);
}

.no-results {
    grid-column: 1 / -1;
    text-align: center;
    color: var(--secondary-color);
    font-size: 1.2rem;
    padding: 3rem 0;
}

.cta-section {
    text-align: center;
    padding: 2rem 1rem;
    margin-bottom: 3rem;
    background-color: var(--surface-color);
    border-radius: var(--border-radius);
}
.cta-section h2 {
    font-size: 1.8rem;
    margin-bottom: 1rem;
    color: var(--primary-color);
}
.cta-section p {
    color: var(--secondary-color);
    max-width: 600px;
    margin: 0 auto 1.5rem;
}
.cta-btn {
    display: inline-block;
    padding: 0.8rem 2rem;
    font-size: 1rem;
    font-weight: 600;
    color: var(--bg-color);
    background-color: var(--accent-color);
    border-radius: var(--border-radius);
    text-decoration: none;
    transition: background-color 0.2s ease, transform 0.2s ease;
}
.cta-btn:hover {
    background-color: #5cdde5;
    transform: translateY(-2px);
}

.seo-content-section {
    max-width: 800px;
    margin: 0 auto 4rem;
    padding: 2rem;
    background: var(--surface-color);
    border-radius: var(--border-radius);
}

.seo-content-section h2 {
    text-align: center;
    font-size: 2rem;
    margin-bottom: 2rem;
    color: var(--primary-color);
}

.faq-item summary {
    font-size: 1.1rem;
    font-weight: 500;
    color: var(--primary-color);
    cursor: pointer;
    padding: 1rem;
    background: #333;
    border-radius: 4px;
    list-style: none; /* Remove default marker */
    position: relative;
    transition: background-color 0.2s ease;
}
.faq-item summary::-webkit-details-marker {
    display: none;
}
.faq-item summary:hover {
    background: #3a3a3a;
}
.faq-item summary::after {
    content: '+';
    position: absolute;
    right: 1rem;
    font-size: 1.5rem;
    transition: transform 0.2s ease;
}
.faq-item[open] summary::after {
    transform: rotate(45deg);
}
.faq-item .faq-answer {
    padding: 1rem;
    background-color: #222;
    border-radius: 0 0 4px 4px;
    color: var(--secondary-color);
    line-height: 1.7;
}
.faq-item {
    margin-bottom: 1rem;
}

footer {
    text-align: center;
    padding: 2rem 1rem;
    margin-top: auto;
    color: var(--secondary-color);
    font-size: 0.9rem;
    border-top: 1px solid #333;
}
footer a {
    color: var(--secondary-color);
    text-decoration: none;
    margin: 0 0.5rem;
    transition: color 0.2s ease;
}
footer a:hover {
    color: var(--accent-color);
}

/* --- Estilos para páginas estáticas (casos de uso, legal, etc.) --- */
.static-content-container {
    max-width: 800px;
}
.static-content h2 {
    font-size: 1.8rem;
    margin-top: 3rem;
    margin-bottom: 1.5rem;
    padding-bottom: 0.5rem;
    border-bottom: 2px solid #333;
    color: var(--primary-color);
}
.static-content p, .static-content li {
    color: var(--secondary-color);
    font-size: 1.1rem;
    margin-bottom: 1rem;
    line-height: 1.8;
}
.static-content ul {
    list-style-position: inside;
    padding-left: 1rem;
}
.static-content code {
    background-color: #111;
    padding: 0.2em 0.4em;
    border-radius: 4px;
    font-family: "SF Mono", "Fira Code", "Consolas", monospace;
    color: var(--success-color);
}
.static-content strong {
    color: var(--primary-color);
    font-weight: 600;
}
.static-content a {
    color: var(--accent-color);
}

header .breadcrumb a {
    color: var(--accent-color);
    text-decoration: none;
    font-weight: 500;
}
header .breadcrumb a:hover {
    text-decoration: underline;
}

/* --- Estilos para página de contacto --- */
.contact-content {
    text-align: center;
}
.contact-content h1 {
    font-size: 2.5rem;
    font-weight: 600;
    letter-spacing: -1px;
    margin-bottom: 1rem;
}
.contact-content p {
    font-size: 1.2rem;
    color: var(--secondary-color);
    margin-bottom: 2rem;
    max-width: 500px;
    margin-left: auto;
    margin-right: auto;
}
.contact-content .email-link {
    display: inline-block;
    background-color: var(--surface-color);
    padding: 1rem 2rem;
    border-radius: var(--border-radius);
    color: var(--accent-color);
    font-size: 1.2rem;
    font-weight: 500;
    text-decoration: none;
    transition: background-color 0.2s ease;
}
.contact-content .email-link:hover {
    background-color: #3a3a3a;
}
.contacto-body {
    justify-content: space-between;
}
.contacto-container {
    flex-grow: 1;
    display: flex;
    flex-direction: column;
    justify-content: center;
}

/* --- Media Queries para Responsividad --- */
@media (max-width: 768px) {
    body {
        padding: 1.5rem 1rem;
    }
    header h1 {
        font-size: 2rem;
    }
    .intro-text {
        font-size: 1rem;
        margin-bottom: 2rem;
    }
    #characterGrid {
        grid-template-columns: repeat(auto-fill, minmax(80px, 1fr));
    }
    .char-card {
        height: 80px;
        font-size: 2.5rem;
    }
    .char-card.emoji {
        font-size: 2rem;
    }
}