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

:root {
    --color-primary: #111111; 
    --color-secondary: #333333; 
    --color-background: #f4f7f6; 
    --color-text: #2c3e50;
    --color-accent: #007bff;
    --color-border: #eeeeee;
}

body {
    font-family: 'Poppins', sans-serif;
    background: #f6f6f6;
    color: var(--color-text);
    display: flex;
    flex-direction: column;
    min-height: 100vh; 
    overflow-x: hidden;
    line-height: 1.6;
}

a, button, select, .file-label, option {
    cursor: pointer !important; 
}

input[type="text"], input[type="number"] {
    cursor: text;
}

main {
    flex: 1; 
    display: flex;
    flex-direction: column;
    justify-content: center;
    align-items: center;
    width: 100%;
    padding: 120px 0;
}

.contenedor {
    background-color: white;
    max-width: 650px; 
    padding: clamp(0px, 5vw, 40px);
    border-radius: 12px;
    box-shadow: 0 10px 25px rgba(0, 0, 0, 0.1);
    word-wrap: break-word;
    margin-top: 20px;
}

h1 {
    color: var(--color-primary);
    font-weight: 700;
    font-size: clamp(1.5rem, 5vw, 2rem);
    margin-bottom: 25px;
    text-align: center;
}

.area-recorte {
    width: 100%;
    max-height: 500px;
    margin-bottom: 20px;
    background-color: #ebebeb;
    border-radius: 8px;
    overflow: hidden;
    border: 1px solid var(--color-border);
}

#interfazEditor {
    margin-top: 20px;
}

.fila-zoom {
    display: flex;
    gap: 10px;
    margin-bottom: 20px;
}

.btn-zoom {
    flex: 1;
    background-color: #eee;
    color: var(--color-primary);
    border: 1px solid #ddd;
    padding: 10px;
    font-size: 1.2rem;
    border-radius: 6px;
}

.btn-zoom:hover {
    background-color: #e0e0e0;
}

.panel-precision {
    display: grid;
    grid-template-columns: repeat(2, 1fr);
    gap: 15px;
    margin-bottom: 20px;
}

.campo-input {
    display: flex;
    flex-direction: column;
}

.campo-input label {
    font-size: 0.85rem;
    font-weight: 600;
    margin-bottom: 5px;
    color: var(--color-secondary);
}

.campo-input input, 
.select-ajuste {
    padding: 10px;
    border: 2px solid var(--color-border);
    border-radius: 6px;
    font-family: 'Poppins', sans-serif;
    outline: none;
    transition: 0.3s;
}

.campo-input input:focus, 
.select-ajuste:focus {
    border-color: var(--color-secondary);
}

.controles-extra {
    display: grid;
    grid-template-columns: repeat(2, 1fr);
    gap: 15px;
    margin-bottom: 25px;
}

#imagenInput { display: none; }

.file-label {
    display: block;
    text-align: center;
    padding: 14px 20px;
    margin-bottom: 15px;
    background-color: var(--color-secondary);
    border-radius: 8px;
    color: white;
    transition: 0.3s;
    border: 2px solid var(--color-secondary);
    font-weight: 600;
    text-decoration: none;
}

.file-label:hover {
    background-color: var(--color-primary);
}

.btn-principal {
    display: block;
    width: 100%;
    background-color: var(--color-secondary);
    color: white;
    border: 2px solid var(--color-secondary);
    padding: 14px 30px;
    border-radius: 8px;
    font-weight: 600;
    font-size: 1rem;
    transition: 0.3s;
}

#resultado {
    margin-top: 30px;
    padding: 20px;
    background-color: var(--color-background);
    border-radius: 10px;
    width: 100%;
    display: flex;
    flex-direction: column;
    align-items: center;
}

#imagenOutput {
    max-width: 100%;
    border-radius: 4px;
    box-shadow: 0 4px 10px rgba(0,0,0,0.1);
}

.pie {
    background: white;
    padding: 40px 0;
    border-top: 1px solid #ddd;
    text-align: center;
    width: 100%;
}

@media (max-width: 768px) {
    main { padding: 80px 0; }

    
    .panel-precision, .controles-extra {
        grid-template-columns: 1fr; 
    }
}

.spinner {
    display: none;
    width: 40px;
    height: 40px;
    border: 4px solid #f3f3f3;
    border-top: 4px solid var(--color-primary);
    border-radius: 50%;
    animation: spin 1s linear infinite;
    margin: 20px auto;
}

@keyframes spin {
    0% { transform: rotate(0deg); }
    100% { transform: rotate(360deg); }
}