/* Variables globales */
:root {
    --primary-color: #4361ee;
    --primary-gradient: linear-gradient(135deg, #4361ee, #3a0ca3);
    --secondary-gradient: linear-gradient(135deg, #f72585, #b5179e);
    --primary-hover: #3a49df;
    --secondary-color: #6c757d;
    --success-color: #28a745;
    --danger-color: #dc3545;
    --light-color: #f8f9fa;
    --dark-color: #343a40;
    --border-radius: 10px;
    --box-shadow: 0 10px 20px rgba(0, 0, 0, 0.08);
    --transition: all 0.3s ease;
    --card-bg: rgba(255, 255, 255, 0.9);
}

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

body {
    font-family: 'Segoe UI', Tahoma, Geneva, Verdana, sans-serif;
    line-height: 1.6;
    color: #333;
    background: #f9fafe;
    background-image: 
        radial-gradient(circle at 20% 20%, rgba(67, 97, 238, 0.05) 0%, transparent 30%),
        radial-gradient(circle at 80% 70%, rgba(247, 37, 133, 0.05) 0%, transparent 30%);
    min-height: 100vh;
}

.container {
    max-width: 1200px;
    margin: 0 auto;
    padding: 2rem;
}

/* Encabezado */
header {
    text-align: center;
    margin-bottom: 3rem;
    padding: 1.5rem;
    background: var(--card-bg);
    border-radius: var(--border-radius);
    box-shadow: var(--box-shadow);
    position: relative;
    overflow: hidden;
}

header::before {
    content: "";
    position: absolute;
    top: 0;
    left: 0;
    width: 100%;
    height: 5px;
    background: var(--primary-gradient);
}

header h1 {
    color: var(--primary-color);
    margin-bottom: 0.8rem;
    font-size: 2.8rem;
    text-shadow: 1px 1px 2px rgba(0, 0, 0, 0.1);
}

header i {
    background: var(--primary-gradient);
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
}

header p {
    color: var(--secondary-color);
    font-size: 1.2rem;
    max-width: 800px;
    margin: 0 auto;
}

/* Área principal */
main {
    display: flex;
    flex-direction: column;
    gap: 2.5rem;
}

/* Sección de introducción */
.intro-section {
    background: var(--card-bg);
    border-radius: var(--border-radius);
    padding: 2rem;
    box-shadow: var(--box-shadow);
    margin-bottom: 1.5rem;
    border-left: 5px solid;
    border-image: var(--primary-gradient) 1;
    transform: translateY(0);
    transition: transform 0.3s ease;
}

.intro-section:hover {
    transform: translateY(-5px);
}

.intro-section h2 {
    color: var(--primary-color);
    margin-bottom: 1.2rem;
    font-size: 2rem;
    position: relative;
    padding-bottom: 0.5rem;
}

.intro-section h2::after {
    content: "";
    position: absolute;
    bottom: 0;
    left: 0;
    width: 100px;
    height: 3px;
    background: var(--primary-gradient);
    border-radius: 3px;
}

.intro-section p {
    margin-bottom: 1rem;
    color: #505050;
    line-height: 1.7;
    font-size: 1.05rem;
}

/* Área de carga */
.upload-container {
    width: 100%;
    background: var(--card-bg);
    border-radius: var(--border-radius);
    padding: 2rem;
    box-shadow: var(--box-shadow);
}

.drop-area {
    border: 3px dashed var(--primary-color);
    border-radius: var(--border-radius);
    padding: 3.5rem 2rem;
    text-align: center;
    background-color: rgba(67, 97, 238, 0.05);
    transition: var(--transition);
    cursor: pointer;
    position: relative;
    overflow: hidden;
}

.drop-area::before {
    content: "";
    position: absolute;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    background: radial-gradient(circle at center, rgba(67, 97, 238, 0.05) 0%, transparent 70%);
    z-index: 0;
}

.drop-area:hover, .drop-area.active {
    background-color: rgba(67, 97, 238, 0.1);
    border-color: var(--primary-hover);
    transform: scale(1.01);
}

.drop-area i {
    font-size: 3.5rem;
    background: var(--primary-gradient);
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
    margin-bottom: 1.2rem;
    position: relative;
    z-index: 1;
}

.drop-area p {
    margin-bottom: 0.7rem;
    color: var(--secondary-color);
    position: relative;
    z-index: 1;
}

.upload-btn {
    display: inline-block;
    background: var(--primary-gradient);
    color: white;
    padding: 0.85rem 1.8rem;
    border-radius: 30px;
    cursor: pointer;
    transition: var(--transition);
    margin-top: 1.2rem;
    border: none;
    font-family: inherit;
    font-size: 1.05rem;
    outline: none;
    position: relative;
    z-index: 1;
    font-weight: 600;
    box-shadow: 0 4px 10px rgba(67, 97, 238, 0.3);
}

.upload-btn:hover {
    transform: translateY(-3px) scale(1.05);
    box-shadow: 0 6px 15px rgba(67, 97, 238, 0.4);
}

/* Vista previa */
.preview-container {
    background: var(--card-bg);
    border-radius: var(--border-radius);
    padding: 2rem;
    box-shadow: var(--box-shadow);
    position: relative;
    overflow: hidden;
}

.preview-container::before {
    content: "";
    position: absolute;
    top: 0;
    left: 0;
    width: 100%;
    height: 5px;
    background: var(--primary-gradient);
}

.preview-container h2 {
    color: var(--primary-color);
    margin-bottom: 1.5rem;
    font-size: 1.8rem;
    position: relative;
    display: inline-block;
}

.preview-container h2::after {
    content: "";
    position: absolute;
    bottom: -5px;
    left: 0;
    width: 50%;
    height: 3px;
    background: var(--primary-gradient);
    border-radius: 3px;
}

.preview-image-container {
    width: 100%;
    display: flex;
    justify-content: center;
    margin-bottom: 1.5rem;
    border-radius: var(--border-radius);
    overflow: hidden;
    background-color: #f0f0f0;
    padding: 1rem;
    border: 1px solid #eaeaea;
    box-shadow: inset 0 0 10px rgba(0, 0, 0, 0.05);
}

#preview-image {
    max-width: 100%;
    max-height: 400px;
    object-fit: contain;
    border-radius: 5px;
}

.image-info {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(200px, 1fr));
    gap: 1.2rem;
    margin-top: 1.5rem;
}

.image-info p {
    color: var(--secondary-color);
    background: rgba(240, 242, 245, 0.5);
    padding: 0.8rem 1rem;
    border-radius: 8px;
    border: 1px solid #eaeaea;
}

.image-info span {
    color: var(--primary-color);
    font-weight: 600;
}

/* Opciones de conversión */
.conversion-options {
    background: var(--card-bg);
    border-radius: var(--border-radius);
    padding: 2rem;
    box-shadow: var(--box-shadow);
    position: relative;
    overflow: hidden;
}

.conversion-options::before {
    content: "";
    position: absolute;
    top: 0;
    left: 0;
    width: 100%;
    height: 5px;
    background: var(--primary-gradient);
}

.conversion-options h2 {
    color: var(--primary-color);
    margin-bottom: 1.5rem;
    font-size: 1.8rem;
    position: relative;
    display: inline-block;
}

.conversion-options h2::after {
    content: "";
    position: absolute;
    bottom: -5px;
    left: 0;
    width: 50%;
    height: 3px;
    background: var(--primary-gradient);
    border-radius: 3px;
}

.format-options {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(120px, 1fr));
    gap: 1.2rem;
    margin-bottom: 2rem;
}

.format-option {
    display: flex;
    align-items: center;
    gap: 0.7rem;
    background: rgba(240, 242, 245, 0.5);
    padding: 0.8rem 1rem;
    border-radius: 8px;
    transition: var(--transition);
    border: 1px solid #eaeaea;
}

.format-option:hover {
    background: rgba(67, 97, 238, 0.08);
    border-color: rgba(67, 97, 238, 0.2);
}

.format-option input[type="radio"] {
    accent-color: var(--primary-color);
    width: 18px;
    height: 18px;
}

.format-option label {
    font-weight: 500;
    cursor: pointer;
}

.quality-slider {
    margin-bottom: 2rem;
    background: rgba(240, 242, 245, 0.5);
    padding: 1.2rem;
    border-radius: 8px;
    border: 1px solid #eaeaea;
}

.quality-slider label {
    display: block;
    margin-bottom: 1rem;
    color: var(--dark-color);
    font-weight: 500;
}

.quality-slider input[type="range"] {
    width: 100%;
    accent-color: var(--primary-color);
    height: 8px;
}

/* Opciones de redimensionamiento */
.resize-options {
    margin-bottom: 2rem;
    border-top: 1px solid #eee;
    padding-top: 1.5rem;
}

.resize-options h3 {
    color: var(--primary-color);
    margin-bottom: 1.2rem;
    font-size: 1.3rem;
}

.resize-toggle {
    display: flex;
    align-items: center;
    margin-bottom: 1.2rem;
    background: rgba(240, 242, 245, 0.5);
    padding: 0.8rem 1rem;
    border-radius: 8px;
    border: 1px solid #eaeaea;
    transition: var(--transition);
}

.resize-toggle:hover {
    background: rgba(67, 97, 238, 0.08);
    border-color: rgba(67, 97, 238, 0.2);
}

.toggle-checkbox {
    margin-right: 0.8rem;
    accent-color: var(--primary-color);
    width: 18px;
    height: 18px;
}

.toggle-label {
    color: var(--dark-color);
    cursor: pointer;
    font-weight: 500;
}

.resize-controls {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(150px, 1fr));
    gap: 1.2rem;
    margin-top: 1.2rem;
    background: rgba(240, 242, 245, 0.3);
    padding: 1.2rem;
    border-radius: 8px;
    border: 1px solid #eee;
}

.dimension-control {
    display: flex;
    flex-direction: column;
    margin-bottom: 1rem;
}

.dimension-control label {
    margin-bottom: 0.5rem;
    color: var(--dark-color);
    font-weight: 500;
}

.dimension-control input[type="number"] {
    padding: 0.8rem;
    border: 1px solid #ddd;
    border-radius: 6px;
    transition: border-color 0.3s;
    font-family: inherit;
    font-size: 1rem;
}

.dimension-control input[type="number"]:focus {
    border-color: var(--primary-color);
    outline: none;
    box-shadow: 0 0 0 3px rgba(67, 97, 238, 0.2);
}

.aspect-ratio {
    display: flex;
    align-items: center;
    margin-top: 0.8rem;
    background: rgba(240, 242, 245, 0.5);
    padding: 0.8rem 1rem;
    border-radius: 8px;
    border: 1px solid #eaeaea;
    transition: var(--transition);
}

.aspect-ratio:hover {
    background: rgba(67, 97, 238, 0.08);
    border-color: rgba(67, 97, 238, 0.2);
}

.aspect-ratio input[type="checkbox"] {
    margin-right: 0.8rem;
    accent-color: var(--primary-color);
    width: 18px;
    height: 18px;
}

.aspect-ratio label {
    color: var(--dark-color);
    cursor: pointer;
    font-weight: 500;
}

.convert-btn {
    display: block;
    width: 100%;
    background: var(--primary-gradient);
    color: white;
    padding: 1rem;
    border-radius: 30px;
    cursor: pointer;
    transition: var(--transition);
    margin-top: 1.5rem;
    text-align: center;
    font-weight: 600;
    text-transform: uppercase;
    letter-spacing: 1px;
    border: none;
    font-family: inherit;
    font-size: 1.1rem;
    box-shadow: 0 4px 10px rgba(67, 97, 238, 0.3);
}

.convert-btn:hover {
    transform: translateY(-3px);
    box-shadow: 0 8px 15px rgba(67, 97, 238, 0.4);
}

.convert-btn i {
    margin-right: 0.8rem;
}

/* Resultado */
.result-container {
    background: var(--card-bg);
    border-radius: var(--border-radius);
    padding: 2rem;
    box-shadow: var(--box-shadow);
    position: relative;
    overflow: hidden;
}

.result-container::before {
    content: "";
    position: absolute;
    top: 0;
    left: 0;
    width: 100%;
    height: 5px;
    background: var(--secondary-gradient);
}

.result-container h2 {
    color: #b5179e;
    margin-bottom: 1.5rem;
    font-size: 1.8rem;
    position: relative;
    display: inline-block;
}

.result-container h2::after {
    content: "";
    position: absolute;
    bottom: -5px;
    left: 0;
    width: 50%;
    height: 3px;
    background: var(--secondary-gradient);
    border-radius: 3px;
}

.result-info {
    margin-bottom: 1.5rem;
}

.result-info p {
    color: var(--secondary-color);
    margin-bottom: 0.8rem;
    background: rgba(240, 242, 245, 0.5);
    padding: 0.8rem 1rem;
    border-radius: 8px;
    border: 1px solid #eaeaea;
}

.result-info span {
    color: #b5179e;
    font-weight: 600;
}

.download-btn, .new-conversion-btn {
    display: block;
    width: 100%;
    padding: 1rem 1.5rem;
    border-radius: 30px;
    cursor: pointer;
    transition: var(--transition);
    text-align: center;
    font-weight: 600;
    text-transform: uppercase;
    letter-spacing: 1px;
    border: none;
    font-family: inherit;
    font-size: 1.1rem;
    margin-bottom: 1rem;
}

.download-btn {
    background: var(--secondary-gradient);
    color: white;
    box-shadow: 0 4px 10px rgba(181, 23, 158, 0.3);
}

.download-btn:hover {
    transform: translateY(-3px);
    box-shadow: 0 8px 15px rgba(181, 23, 158, 0.4);
}

.new-conversion-btn {
    background: transparent;
    color: var(--primary-color);
    border: 2px solid var(--primary-color);
}

.new-conversion-btn:hover {
    background-color: rgba(67, 97, 238, 0.1);
    transform: translateY(-3px);
}

.hidden {
    display: none;
}

@keyframes fadeIn {
    from { opacity: 0; transform: translateY(20px); }
    to { opacity: 1; transform: translateY(0); }
}

.preview-container, .conversion-options, .result-container, .intro-section, .formats-info, .faq-section {
    animation: fadeIn 0.5s ease-out forwards;
}

/* Sección de formatos de imagen */
.formats-info {
    background-color: white;
    border-radius: var(--border-radius);
    padding: 1.5rem;
    box-shadow: var(--box-shadow);
    margin-top: 2rem;
}

.formats-info h2 {
    color: var(--primary-color);
    margin-bottom: 1.5rem;
    font-size: 1.8rem;
    text-align: center;
}

.format-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(250px, 1fr));
    gap: 1.5rem;
}

.format-card {
    background-color: var(--light-color);
    border-radius: var(--border-radius);
    padding: 1.2rem;
    transition: var(--transition);
    border-left: 4px solid var(--primary-color);
}

.format-card:hover {
    transform: translateY(-5px);
    box-shadow: var(--box-shadow);
}

.format-card h3 {
    color: var(--primary-color);
    margin-bottom: 0.8rem;
    font-size: 1.3rem;
}

.format-card p {
    color: var(--secondary-color);
    font-size: 0.95rem;
    line-height: 1.5;
}

/* Sección de preguntas frecuentes */
.faq-section {
    background-color: white;
    border-radius: var(--border-radius);
    padding: 1.5rem;
    box-shadow: var(--box-shadow);
    margin-top: 2rem;
}

.faq-section h2 {
    color: var(--primary-color);
    margin-bottom: 1.5rem;
    font-size: 1.8rem;
    text-align: center;
}

.faq-item {
    margin-bottom: 1.5rem;
    padding-bottom: 1.5rem;
    border-bottom: 1px solid #eee;
}

.faq-item:last-child {
    margin-bottom: 0;
    padding-bottom: 0;
    border-bottom: none;
}

.faq-item h3 {
    color: var(--dark-color);
    margin-bottom: 0.8rem;
    font-size: 1.2rem;
}

.faq-item p {
    color: var(--secondary-color);
    line-height: 1.6;
}

/* Footer */
footer {
    margin-top: 3rem;
    background-color: white;
    border-radius: var(--border-radius);
    padding: 2rem;
    box-shadow: var(--box-shadow);
}

.footer-content {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(250px, 1fr));
    gap: 2rem;
    margin-bottom: 1.5rem;
}

.footer-section h3 {
    color: var(--primary-color);
    margin-bottom: 1rem;
    font-size: 1.3rem;
}

.footer-section p {
    color: var(--secondary-color);
    line-height: 1.6;
    margin-bottom: 1rem;
}

.footer-section ul {
    list-style: none;
}

.footer-section ul li {
    margin-bottom: 0.5rem;
}

.footer-section ul li a {
    color: var(--secondary-color);
    text-decoration: none;
    transition: var(--transition);
}

.footer-section ul li a:hover {
    color: var(--primary-color);
    text-decoration: underline;
}

.copyright {
    text-align: center;
    color: var(--secondary-color);
    padding-top: 1.5rem;
    border-top: 1px solid #eee;
}

footer i {
    color: var(--danger-color);
}

/* Estilos para páginas de contenido (Privacidad, Términos, etc.) */
.page-content {
    background-color: white;
    border-radius: var(--border-radius);
    padding: 2rem;
    box-shadow: var(--box-shadow);
    animation: fadeIn 0.5s ease forwards;
}

.page-content h2 {
    color: var(--primary-color);
    margin-bottom: 1rem;
    font-size: 2rem;
    text-align: center;
}

.last-updated {
    text-align: center;
    color: var(--secondary-color);
    margin-bottom: 2rem;
    font-style: italic;
}

.content-section {
    margin-bottom: 2rem;
    padding-bottom: 1rem;
    border-bottom: 1px solid #eee;
}

.content-section:last-child {
    margin-bottom: 0;
    padding-bottom: 0;
    border-bottom: none;
}

.content-section h3 {
    color: var(--primary-color);
    margin-bottom: 1rem;
    font-size: 1.4rem;
}

.content-section p {
    margin-bottom: 1rem;
    color: var(--secondary-color);
    line-height: 1.7;
}

.content-section ul, .content-section ol {
    margin-bottom: 1rem;
    padding-left: 1.5rem;
    color: var(--secondary-color);
}

.content-section li {
    margin-bottom: 0.5rem;
    line-height: 1.7;
}

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

.content-section a:hover {
    text-decoration: underline;
}

/* Estilos para la página de contacto */
.intro-text {
    text-align: center;
    color: var(--secondary-color);
    margin-bottom: 2rem;
    line-height: 1.7;
}

.contact-container {
    display: grid;
    grid-template-columns: 1fr 2fr;
    gap: 2rem;
    margin-bottom: 2rem;
}

.contact-info {
    background-color: var(--light-color);
    border-radius: var(--border-radius);
    padding: 1.5rem;
}

.contact-item {
    display: flex;
    align-items: center;
    margin-bottom: 1.5rem;
}

.contact-item i {
    font-size: 1.5rem;
    color: var(--primary-color);
    margin-right: 1rem;
    width: 2rem;
    text-align: center;
}

.contact-item p {
    color: var(--secondary-color);
}

.contact-social h3 {
    color: var(--primary-color);
    margin-bottom: 1rem;
    font-size: 1.2rem;
}

.social-icons {
    display: flex;
    gap: 1rem;
}

.social-icons a {
    display: flex;
    align-items: center;
    justify-content: center;
    width: 2.5rem;
    height: 2.5rem;
    background-color: var(--primary-color);
    color: white;
    border-radius: 50%;
    transition: var(--transition);
}

.social-icons a:hover {
    background-color: var(--primary-hover);
    transform: translateY(-3px);
}

.contact-form {
    background-color: white;
    border-radius: var(--border-radius);
    padding: 1.5rem;
    box-shadow: var(--box-shadow);
}

.form-group {
    margin-bottom: 1.5rem;
}

.form-group label {
    display: block;
    margin-bottom: 0.5rem;
    color: var(--dark-color);
    font-weight: 500;
}

.form-group input[type="text"],
.form-group input[type="email"],
.form-group textarea {
    width: 100%;
    padding: 0.75rem;
    border: 1px solid #ddd;
    border-radius: var(--border-radius);
    font-family: inherit;
    font-size: 1rem;
    transition: var(--transition);
}

.form-group input[type="text"]:focus,
.form-group input[type="email"]:focus,
.form-group textarea:focus {
    border-color: var(--primary-color);
    outline: none;
    box-shadow: 0 0 0 2px rgba(74, 108, 247, 0.2);
}

.checkbox-group {
    display: flex;
    align-items: flex-start;
}

.checkbox-group input[type="checkbox"] {
    margin-right: 0.5rem;
    margin-top: 0.3rem;
    accent-color: var(--primary-color);
}

.required {
    color: var(--danger-color);
}

.submit-btn {
    background-color: var(--primary-color);
    color: white;
    border: none;
    padding: 0.75rem 1.5rem;
    border-radius: var(--border-radius);
    cursor: pointer;
    transition: var(--transition);
    font-size: 1rem;
    font-family: inherit;
    width: 100%;
}

.submit-btn:hover {
    background-color: var(--primary-hover);
    transform: translateY(-2px);
}

.success-message {
    text-align: center;
    padding: 2rem;
}

.success-message i {
    font-size: 3rem;
    color: var(--success-color);
    margin-bottom: 1rem;
}

.success-message h3 {
    color: var(--success-color);
    margin-bottom: 1rem;
    font-size: 1.5rem;
}

.success-message p {
    color: var(--secondary-color);
    margin-bottom: 1.5rem;
    line-height: 1.7;
}

.new-message-btn {
    background-color: var(--primary-color);
    color: white;
    border: none;
    padding: 0.75rem 1.5rem;
    border-radius: var(--border-radius);
    cursor: pointer;
    transition: var(--transition);
    font-size: 1rem;
    font-family: inherit;
}

.new-message-btn:hover {
    background-color: var(--primary-hover);
    transform: translateY(-2px);
}

.faq-contact {
    margin-top: 2rem;
    background-color: var(--light-color);
    border-radius: var(--border-radius);
    padding: 1.5rem;
    text-align: center;
}

.faq-contact h3 {
    color: var(--primary-color);
    margin-bottom: 1rem;
    font-size: 1.3rem;
}

.faq-contact p {
    color: var(--secondary-color);
    line-height: 1.7;
}

.faq-contact a {
    color: var(--primary-color);
    text-decoration: none;
    transition: var(--transition);
}

.faq-contact a:hover {
    text-decoration: underline;
}

/* Responsive */
@media (max-width: 768px) {
    .container {
        padding: 1rem;
    }
    
    header h1 {
        font-size: 2rem;
    }
    
    .drop-area {
        padding: 2rem 1rem;
    }
    
    .format-options {
        grid-template-columns: repeat(2, 1fr);
    }
    
    .format-grid {
        grid-template-columns: 1fr;
    }
    
    .footer-content {
        grid-template-columns: 1fr;
    }
    
    .contact-container {
        grid-template-columns: 1fr;
    }
    
    .page-content {
        padding: 1.5rem;
    }
}

@media (max-width: 480px) {
    header h1 {
        font-size: 1.8rem;
    }
    
    .format-options {
        grid-template-columns: 1fr;
    }
    
    .download-btn, .new-conversion-btn {
        width: 100%;
        justify-content: center;
        margin-right: 0;
    }
    
    .intro-section h2, .formats-info h2, .faq-section h2, .page-content h2 {
        font-size: 1.5rem;
    }
    
    .content-section h3 {
        font-size: 1.2rem;
    }
}