/* Estilos CSS para el Conversor de Imágenes HEIC */

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

body {
    font-family: 'Segoe UI', Tahoma, Geneva, Verdana, sans-serif;
    background: linear-gradient(135deg, #667eea 0%, #764ba2 100%);
    min-height: 100vh;
    display: flex;
    justify-content: center;
    align-items: center;
    padding: 20px;
}

.container {
    background: white;
    padding: 40px;
    border-radius: 20px;
    box-shadow: 0 15px 35px rgba(0, 0, 0, 0.1);
    max-width: 500px;
    width: 100%;
    text-align: center;
}

h1 {
    color: #333;
    margin-bottom: 30px;
    font-size: 2.2em;
    font-weight: 300;
}

.upload-area {
    border: 3px dashed #ddd;
    border-radius: 15px;
    padding: 40px 20px;
    margin-bottom: 30px;
    transition: all 0.3s ease;
    cursor: pointer;
    background: #fafafa;
}

.upload-area:hover {
    border-color: #667eea;
    background: #f0f4ff;
}

.upload-area.dragover {
    border-color: #667eea;
    background: #e8f2ff;
    transform: scale(1.02);
}

.upload-icon {
    font-size: 3em;
    color: #ccc;
    margin-bottom: 15px;
}

.upload-text {
    color: #666;
    font-size: 1.1em;
    margin-bottom: 15px;
}

.file-input {
    display: none;
}

.btn {
    background: linear-gradient(135deg, #667eea 0%, #764ba2 100%);
    color: white;
    border: none;
    padding: 12px 30px;
    border-radius: 25px;
    font-size: 1em;
    cursor: pointer;
    transition: all 0.3s ease;
    margin: 10px;
    min-width: 120px;
}

.btn:hover {
    transform: translateY(-2px);
    box-shadow: 0 5px 15px rgba(102, 126, 234, 0.4);
}

.btn:disabled {
    background: #ccc;
    cursor: not-allowed;
    transform: none;
    box-shadow: none;
}

.format-selector {
    margin: 20px 0;
}

.format-selector label {
    margin: 0 15px;
    color: #555;
    font-weight: 500;
}

.format-selector input[type="radio"] {
    margin-right: 5px;
}

.result-area {
    margin-top: 30px;
    padding: 20px;
    background: #f8f9fa;
    border-radius: 15px;
    display: none;
}

.preview-image {
    max-width: 100%;
    max-height: 300px;
    border-radius: 10px;
    margin-bottom: 15px;
    box-shadow: 0 5px 15px rgba(0, 0, 0, 0.1);
}

.loading {
    display: none;
    color: #667eea;
    font-size: 1.1em;
    margin: 20px 0;
}

.loading::after {
    content: '';
    animation: dots 1.5s steps(5, end) infinite;
}

@keyframes dots {
    0%, 20% { content: '.'; }
    40% { content: '..'; }
    60% { content: '...'; }
    80%, 100% { content: ''; }
}

.error {
    color: #e74c3c;
    background: #ffeaea;
    padding: 15px;
    border-radius: 10px;
    margin: 15px 0;
    display: none;
}

.success {
    color: #27ae60;
    background: #eafaf1;
    padding: 15px;
    border-radius: 10px;
    margin: 15px 0;
    display: none;
}

.file-info {
    background: #e8f4fd;
    padding: 15px;
    border-radius: 10px;
    margin: 15px 0;
    color: #2c5aa0;
    display: none;
}