styles.css

:root {
    --primary-color: #0066FF;
    --background-color: #f8f9fa;
    --border-color: #e9ecef;
    --text-color: #333333;
    --secondary-text: #6c757d;
    --sidebar-width: 250px;
}

* {
    margin: 0;
    padding: 0;
    box-sizing: border-box;
    font-family: -apple-system, BlinkMacSystemFont, 'Segoe UI', Roboto, Arial, sans-serif;
}

body {
    background-color: var(--background-color);
    min-height: 100vh;
    display: flex;
}

/* Sidebar Styles */
.sidebar {
    width: var(--sidebar-width);
    background-color: white;
    border-right: 1px solid var(--border-color);
    padding: 20px;
    height: 100vh;
    position: fixed;
    left: 0;
    top: 0;
}

.sidebar h2 {
    color: var(--text-color);
    margin-bottom: 20px;
    padding-bottom: 10px;
    border-bottom: 2px solid var(--primary-color);
}

.nav-item {
    display: block;
    padding: 12px 15px;
    color: var(--text-color);
    text-decoration: none;
    border-radius: 8px;
    margin-bottom: 8px;
    transition: all 0.3s ease;
}

.nav-item:hover {
    background-color: var(--background-color);
    color: var(--primary-color);
}

.nav-item.active {
    background-color: var(--primary-color);
    color: white;
}

/* Main Content Styles */
.main-content {
    flex: 1;
    margin-left: var(--sidebar-width);
    padding: 20px;
}

.section-content {
    display: none;
}

.section-content.active {
    display: block;
}

/* Container Styles */
.container {
    width: 100%;
    max-width: 1100px;
    padding: 40px;
    margin: 0 auto;
}

h1 {
    font-size: 28px;
    font-weight: 600;
    color: var(--text-color);
    margin-bottom: 32px;
}

.app-container {
    display: grid;
    grid-template-columns: 1fr 400px;
    gap: 40px;
    align-items: start;
}

.qr-preview {
    background: white;
    padding: 40px;
    border-radius: 12px;
    box-shadow: 0 2px 8px rgba(0,0,0,0.1);
    display: flex;
    align-items: center;
    justify-content: center;
}

.qr-code {
    width: 100%;
    max-width: 400px;
    aspect-ratio: 1;
}

.options-panel {
    background: white;
    padding: 24px;
    border-radius: 12px;
    box-shadow: 0 2px 8px rgba(0,0,0,0.1);
}

.section {
    margin-bottom: 24px;
}

.section h3 {
    font-size: 16px;
    font-weight: 600;
    color: var(--text-color);
    margin-bottom: 16px;
}

.url-input, .vcard-input {
    width: 100%;
    padding: 12px;
    border: 1px solid var(--border-color);
    border-radius: 8px;
    font-size: 14px;
    margin-bottom: 8px;
}

.url-input:focus, .vcard-input:focus {
    outline: none;
    border-color: var(--primary-color);
    box-shadow: 0 0 0 2px rgba(0, 102, 255, 0.1);
}

.helper-text {
    font-size: 14px;
    color: var(--secondary-text);
}

.format-select {
    width: 100%;
    padding: 12px;
    border: 1px solid var(--border-color);
    border-radius: 8px;
    font-size: 14px;
    margin-bottom: 16px;
}

.size-control {
    margin-top: 16px;
}

.size-range {
    width: 100%;
    margin: 8px 0;
}

.size-value {
    font-size: 14px;
    color: var(--text-color);
}

.download-btn {
    width: 100%;
    padding: 12px;
    background-color: var(--primary-color);
    color: white;
    border: none;
    border-radius: 8px;
    font-size: 14px;
    font-weight: 500;
    cursor: pointer;
    transition: background-color 0.2s;
    display: flex;
    align-items: center;
    justify-content: center;
    gap: 8px;
}

.download-btn:hover {
    background-color: #0052cc;
}

.input-group {
    display: flex;
    flex-direction: column;
    gap: 10px;
    margin-bottom: 20px;
}

.input-group input {
    padding: 10px;
    border: 1px solid var(--border-color);
    border-radius: 6px;
    font-size: 14px;
    transition: border-color 0.3s;
}

.input-group input:focus {
    border-color: var(--primary-color);
    outline: none;
}

.input-group input::placeholder {
    color: #999;
}

.control-group {
    background: white;
    padding: 20px;
    border-radius: 8px;
    margin-bottom: 20px;
    box-shadow: 0 2px 4px rgba(0,0,0,0.05);
}

.control-group label {
    display: block;
    font-weight: 600;
    margin-bottom: 15px;
    color: var(--text-color);
}

.qr-options {
    display: flex;
    flex-direction: column;
    gap: 15px;
}

.size-control {
    display: flex;
    flex-direction: column;
    gap: 10px;
}

.size-control span {
    font-size: 14px;
    color: var(--secondary-text);
}

.size-control input[type="range"] {
    width: 100%;
}

select {
    padding: 10px;
    border: 1px solid var(--border-color);
    border-radius: 6px;
    font-size: 14px;
    background: white;
    cursor: pointer;
}

.download-button {
    width: 100%;
    padding: 12px;
    background: var(--primary-color);
    color: white;
    border: none;
    border-radius: 6px;
    font-size: 16px;
    font-weight: 500;
    cursor: pointer;
    display: flex;
    align-items: center;
    justify-content: center;
    gap: 8px;
    transition: background-color 0.3s;
}

.download-button:hover {
    background-color: #0052cc;
}

.download-button .icon {
    font-size: 20px;
}

.option {
    width: 40px;
    height: 40px;
    border: 2px solid var(--border-color);
    border-radius: 8px;
    background: white;
    display: flex;
    align-items: center;
    justify-content: center;
    cursor: pointer;
    transition: all 0.2s;
}

.option:hover {
    border-color: var(--primary-color);
}

.option.active {
    border-color: var(--primary-color);
    background-color: #f0f7ff;
}

.dot-preview, .corner-preview, .center-preview {
    width: 24px;
    height: 24px;
    background: var(--text-color);
}

/* Estilos de puntos */
.dot-preview.square {
    border-radius: 0;
}

.dot-preview.dots {
    border-radius: 50%;
}

.dot-preview.rounded {
    border-radius: 4px;
}

.dot-preview.classy {
    position: relative;
    border-radius: 0;
}

.dot-preview.classy::after {
    content: '';
    position: absolute;
    top: 50%;
    left: 50%;
    transform: translate(-50%, -50%);
    width: 60%;
    height: 60%;
    background: white;
}

.dot-preview.classy-rounded {
    position: relative;
    border-radius: 4px;
}

.dot-preview.classy-rounded::after {
    content: '';
    position: absolute;
    top: 50%;
    left: 50%;
    transform: translate(-50%, -50%);
    width: 60%;
    height: 60%;
    background: white;
    border-radius: 2px;
}

/* Estilos de esquinas */
.corner-preview.square {
    border-radius: 0;
}

.corner-preview.dot {
    border-radius: 50%;
}

.corner-preview.extra-rounded {
    border-radius: 8px;
}

/* Estilos del centro */
.center-preview.square {
    border-radius: 0;
}

.center-preview.dot {
    border-radius: 50%;
}

/* Opciones de color */
.color-options {
    display: flex;
    gap: 12px;
}

.color-option {
    width: 32px;
    height: 32px;
    border-radius: 50%;
    border: 2px solid white;
    cursor: pointer;
    transition: transform 0.2s;
    box-shadow: 0 2px 4px rgba(0,0,0,0.1);
}

.color-option:hover {
    transform: scale(1.1);
}

.color-option.active {
    transform: scale(1.1);
    box-shadow: 0 0 0 2px var(--primary-color);
}

/* Estilos para la sección VCARD */
.app-container {
    display: grid;
    grid-template-columns: 320px 1fr;
    gap: 2rem;
    padding: 1rem;
    max-width: 1200px;
    margin: 0 auto;
}

.qr-preview {
    position: sticky;
    top: 2rem;
    display: flex;
    flex-direction: column;
    gap: 1.5rem;
}

.qr-container {
    background: white;
    padding: 1.5rem;
    border-radius: 12px;
    box-shadow: 0 4px 12px rgba(0,0,0,0.1);
    display: flex;
    justify-content: center;
    align-items: center;
}

#vcardQrCode {
    width: 100%;
    height: auto;
    display: flex;
    justify-content: center;
    align-items: center;
}

#vcardQrCode canvas {
    max-width: 100%;
    height: auto !important;
}

.qr-style-controls {
    background: white;
    border-radius: 12px;
    padding: 1.25rem;
    box-shadow: 0 4px 12px rgba(0,0,0,0.1);
}

.control-group {
    margin-bottom: 1.25rem;
}

.control-group:last-child {
    margin-bottom: 0;
}

.control-group label {
    display: block;
    font-weight: 500;
    margin-bottom: 0.75rem;
    color: #333;
    font-size: 0.9rem;
}

.style-options {
    display: grid;
    grid-template-columns: repeat(2, 1fr);
    gap: 0.5rem;
}

.style-option {
    display: flex;
    flex-direction: column;
    align-items: center;
    gap: 0.5rem;
    padding: 0.5rem;
    border: 1px solid #e0e0e0;
    border-radius: 8px;
    background: white;
    cursor: pointer;
    transition: all 0.2s ease;
}

.style-option:hover {
    border-color: #0066FF;
    background: #f8f9ff;
}

.style-option.active {
    border-color: #0066FF;
    background: #f0f7ff;
}

.preview-box {
    width: 100%;
    height: 32px;
    display: flex;
    justify-content: center;
    align-items: center;
    gap: 4px;
    background: #f5f5f5;
    border-radius: 6px;
    padding: 0.25rem;
}

.dot {
    width: 8px;
    height: 8px;
    background: #333;
}

.dot.square {
    border-radius: 2px;
}

.dot.dots {
    border-radius: 50%;
}

.dot.rounded {
    border-radius: 3px;
}

.dot.classy {
    transform: rotate(45deg);
}

.corner {
    width: 20px;
    height: 20px;
    background: #333;
    position: relative;
}

.corner.square {
    border-radius: 2px;
}

.corner.dot {
    border-radius: 50%;
}

.corner.extra-rounded {
    border-radius: 6px;
}

.color-options {
    display: grid;
    grid-template-columns: repeat(3, 1fr);
    gap: 0.5rem;
}

.color-option {
    position: relative;
    width: 100%;
    padding-top: 100%;
    border-radius: 6px;
    border: 2px solid transparent;
    cursor: pointer;
    transition: all 0.2s ease;
}

.color-option:hover {
    transform: translateY(-2px);
    box-shadow: 0 2px 6px rgba(0,0,0,0.1);
}

.color-option.active {
    border-color: #333;
}

.color-name {
    position: absolute;
    bottom: -20px;
    left: 50%;
    transform: translateX(-50%);
    font-size: 0.7rem;
    color: #666;
    white-space: nowrap;
}

.size-format-controls {
    display: flex;
    flex-direction: column;
    gap: 0.75rem;
}

.size-control {
    display: flex;
    flex-direction: column;
    gap: 0.5rem;
}

.size-label {
    font-size: 0.8rem;
    color: #666;
}

#vcard-size-slider {
    width: 100%;
    height: 4px;
    -webkit-appearance: none;
    background: #e0e0e0;
    border-radius: 2px;
    outline: none;
}

#vcard-size-slider::-webkit-slider-thumb {
    -webkit-appearance: none;
    width: 16px;
    height: 16px;
    background: #0066FF;
    border-radius: 50%;
    cursor: pointer;
    transition: all 0.2s;
}

#vcard-size-slider::-webkit-slider-thumb:hover {
    transform: scale(1.1);
}

.format-select {
    width: 100%;
    padding: 0.5rem;
    border: 1px solid #e0e0e0;
    border-radius: 6px;
    background: white;
    font-size: 0.8rem;
    color: #333;
    cursor: pointer;
}

.format-select:focus {
    border-color: #0066FF;
    outline: none;
}

/* Estilos para el formulario */
.controls {
    background: white;
    border-radius: 12px;
    padding: 1.5rem;
    box-shadow: 0 4px 12px rgba(0,0,0,0.1);
}

.tabs {
    display: flex;
    gap: 0.5rem;
    margin-bottom: 1.5rem;
    padding-bottom: 0.5rem;
    border-bottom: 1px solid #e0e0e0;
    overflow-x: auto;
    scrollbar-width: none;
    -ms-overflow-style: none;
}

.tabs::-webkit-scrollbar {
    display: none;
}

.tab-btn {
    padding: 0.5rem 1rem;
    border: none;
    background: none;
    border-radius: 6px;
    cursor: pointer;
    transition: all 0.2s;
    color: #666;
    white-space: nowrap;
    font-size: 0.9rem;
}

.tab-btn:hover {
    background: #f5f5f5;
    color: #333;
}

.tab-btn.active {
    background: #0066FF;
    color: white;
}

.input-group {
    display: flex;
    flex-direction: column;
    gap: 0.75rem;
}

.input-group input {
    padding: 0.75rem;
    border: 1px solid #e0e0e0;
    border-radius: 6px;
    transition: border-color 0.2s;
    font-size: 0.9rem;
}

.input-group input:focus {
    border-color: #0066FF;
    outline: none;
}

.download-button {
    width: 100%;
    display: flex;
    align-items: center;
    justify-content: center;
    gap: 0.5rem;
    padding: 0.75rem;
    margin-top: 1rem;
    background: #0066FF;
    color: white;
    border: none;
    border-radius: 6px;
    cursor: pointer;
    transition: background 0.2s;
    font-size: 0.9rem;
}

.download-button:hover {
    background: #0052cc;
}

/* Responsive */
@media (max-width: 768px) {
    .app-container {
        grid-template-columns: 1fr;
    }

    .qr-preview {
        position: relative;
        top: 0;
    }

    .tabs {
        padding-bottom: 0.75rem;
    }
}

@media (max-width: 768px) {
    .app-container {
        grid-template-columns: 1fr;
    }

    .sidebar {
        width: 100%;
        height: auto;
        position: static;
        border-right: none;
        border-bottom: 1px solid var(--border-color);
    }

    .main-content {
        margin-left: 0;
    }
}