/* ===================================================
   EDITOR.CSS - Editor dual (Formulario + Preview)
   Mejorado para fluidez y UX
   =================================================== */

.editor-container {
    max-width: var(--max-width-2xl);
    margin: 0 auto;
    padding: 0 1.5rem 2rem;
}

/* --- Barra de herramientas del editor --- */
.editor-toolbar {
    display: flex;
    align-items: center;
    justify-content: space-between;
    padding: 1rem 0;
    border-bottom: 1px solid var(--border-color);
    margin-bottom: 1.5rem;
    gap: 0.75rem;
    flex-wrap: wrap;
}

.editor-toolbar-title {
    display: flex;
    align-items: center;
    gap: 0.5rem;
    font-weight: 700;
    font-size: var(--font-size-base);
    color: var(--text-primary);
}

.editor-toolbar-title i {
    width: 20px;
    height: 20px;
    color: var(--primary);
}

.editor-badge {
    background: var(--primary-light);
    color: var(--primary);
    font-size: var(--font-size-xs);
    font-weight: 600;
    padding: 0.2rem 0.6rem;
    border-radius: var(--radius-full);
    margin-left: 0.5rem;
}

.btn-download {
    box-shadow: var(--shadow-primary);
    transition: all var(--transition-base);
}

.btn-download:hover {
    transform: translateY(-1px);
    box-shadow: 0 6px 20px rgba(37, 99, 235, 0.4);
}

.btn-download i {
    width: 18px;
    height: 18px;
}

/* --- Botón volver mejorado --- */
.btn-back {
    display: inline-flex;
    align-items: center;
    gap: 0.4rem;
    background: none;
    border: 1px solid var(--border-color);
    color: var(--text-secondary);
    padding: 0.5rem 1rem;
    border-radius: var(--radius-lg);
    font-size: var(--font-size-sm);
    font-weight: 600;
    cursor: pointer;
    transition: all var(--transition-fast);
    font-family: var(--font-family);
}

.btn-back:hover {
    background: var(--bg-tertiary);
    color: var(--text-primary);
    border-color: var(--text-tertiary);
}

.btn-back i {
    width: 16px;
    height: 16px;
}

/* --- Layout dual --- */
.editor-layout {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 1.5rem;
    align-items: start;
}

/* --- Panel genérico --- */
.editor-panel {
    background: var(--bg-secondary);
    border-radius: var(--radius-xl);
    border: 1px solid var(--border-color);
    box-shadow: var(--shadow-sm);
    overflow: hidden;
    transition: box-shadow var(--transition-base);
}

.editor-panel:hover {
    box-shadow: var(--shadow-md);
}

.panel-header {
    padding: 1rem 1.5rem;
    border-bottom: 1px solid var(--border-light);
    background: var(--bg-tertiary);
}

.panel-header h3 {
    font-size: var(--font-size-sm);
    font-weight: 700;
    color: var(--text-secondary);
    display: flex;
    align-items: center;
    gap: 0.5rem;
    text-transform: uppercase;
    letter-spacing: 0.5px;
}

.panel-header h3 i {
    width: 16px;
    height: 16px;
}

/* --- Formulario del editor --- */
.editor-form {
    max-height: calc(100vh - 160px);
    overflow-y: auto;
    scroll-behavior: smooth;
}

/* Scrollbar estilizado */
.editor-form::-webkit-scrollbar {
    width: 6px;
}

.editor-form::-webkit-scrollbar-track {
    background: transparent;
}

.editor-form::-webkit-scrollbar-thumb {
    background: var(--border-color);
    border-radius: var(--radius-full);
}

.editor-form::-webkit-scrollbar-thumb:hover {
    background: var(--text-tertiary);
}

/* --- Zona de subida de archivos --- */
.upload-section {
    padding: 1.5rem;
}

.upload-zone {
    border: 2px dashed var(--border-color);
    padding: 2rem 1.5rem;
    border-radius: var(--radius-xl);
    text-align: center;
    cursor: pointer;
    transition: all 0.3s cubic-bezier(0.4, 0, 0.2, 1);
    background: var(--bg-primary);
    position: relative;
    overflow: hidden;
}

.upload-zone::before {
    content: '';
    position: absolute;
    inset: 0;
    background: radial-gradient(circle at center, rgba(37, 99, 235, 0.04) 0%, transparent 70%);
    opacity: 0;
    transition: opacity 0.3s ease;
}

.upload-zone:hover::before,
.upload-zone.drag-active::before {
    opacity: 1;
}

.upload-zone:hover,
.upload-zone.drag-active {
    border-color: var(--primary);
    background: var(--primary-lighter);
    transform: scale(1.01);
}

.upload-zone.upload-success {
    border-color: var(--success);
    background: var(--success-light);
    border-style: solid;
}

.upload-content {
    display: flex;
    flex-direction: column;
    align-items: center;
    gap: 0.5rem;
    position: relative;
    z-index: 1;
}

.upload-icon {
    color: var(--primary);
    margin-bottom: 0.5rem;
    transition: transform 0.3s ease;
}

.upload-zone:hover .upload-icon {
    transform: translateY(-3px);
}

.upload-icon i {
    width: 40px;
    height: 40px;
}

.upload-icon-success {
    color: var(--success);
}

.upload-title {
    font-weight: 700;
    font-size: var(--font-size-sm);
    color: var(--text-primary);
}

.upload-hint {
    font-size: var(--font-size-xs);
    color: var(--text-tertiary);
}

/* Spinner de carga */
.upload-spinner {
    width: 36px;
    height: 36px;
    border: 3px solid var(--border-color);
    border-top-color: var(--primary);
    border-radius: 50%;
    animation: spin 0.8s linear infinite;
    margin-bottom: 0.5rem;
}

/* --- Secciones del formulario --- */
.form-section {
    padding: 1.25rem 1.5rem;
    border-top: 1px solid var(--border-light);
    animation: fadeIn 0.3s ease;
}

.form-section-header {
    display: flex;
    justify-content: space-between;
    align-items: center;
    margin-bottom: 1rem;
}

.form-section-header h4 {
    font-size: var(--font-size-sm);
    font-weight: 700;
    color: var(--text-primary);
    display: flex;
    align-items: center;
    gap: 0.5rem;
}

.form-section-header h4 i {
    width: 18px;
    height: 18px;
    color: var(--primary);
}

/* --- Botones añadir / eliminar --- */
.btn-add {
    display: inline-flex;
    align-items: center;
    gap: 0.3rem;
    background: var(--primary-lighter);
    color: var(--primary);
    border: none;
    padding: 0.4rem 0.8rem;
    border-radius: var(--radius-md);
    font-size: var(--font-size-xs);
    font-weight: 600;
    cursor: pointer;
    transition: all 0.2s ease;
    font-family: var(--font-family);
}

.btn-add:hover {
    background: var(--primary-light);
    transform: scale(1.05);
}

.btn-add:active {
    transform: scale(0.97);
}

.btn-add i {
    width: 14px;
    height: 14px;
}

.btn-remove {
    background: none;
    border: none;
    color: var(--text-tertiary);
    cursor: pointer;
    padding: 0.3rem;
    border-radius: var(--radius-sm);
    transition: all 0.2s ease;
}

.btn-remove:hover {
    color: var(--danger);
    background: var(--danger-light);
    transform: scale(1.1);
}

.btn-remove i {
    width: 16px;
    height: 16px;
}

/* --- Bloque de persona (vendedor/comprador) --- */
.person-block {
    background: var(--bg-primary);
    border: 1px solid var(--border-light);
    border-radius: var(--radius-lg);
    padding: 1rem;
    margin-bottom: 0.75rem;
    transition: all 0.25s ease;
    animation: slideUp 0.3s ease;
}

.person-block:hover {
    border-color: var(--primary);
    box-shadow: 0 0 0 3px rgba(37, 99, 235, 0.06);
}

.person-block-header {
    display: flex;
    justify-content: space-between;
    align-items: center;
    margin-bottom: 0.75rem;
}

.person-label {
    font-size: var(--font-size-xs);
    font-weight: 700;
    color: var(--primary);
    text-transform: uppercase;
    letter-spacing: 0.5px;
}

/* --- Grid del formulario --- */
.form-grid {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 0.75rem;
}

.form-group {
    display: flex;
    flex-direction: column;
}

.form-group-full {
    grid-column: 1 / -1;
}

.form-group label {
    font-size: var(--font-size-xs);
    font-weight: 600;
    color: var(--text-tertiary);
    margin-bottom: 0.35rem;
    text-transform: uppercase;
    letter-spacing: 0.3px;
}

.form-group input,
.form-group select,
.form-textarea {
    width: 100%;
    padding: 0.6rem 0.8rem;
    border: 1px solid var(--border-color);
    border-radius: var(--radius-md);
    background: var(--bg-secondary);
    color: var(--text-primary);
    font-size: var(--font-size-sm);
    font-family: var(--font-family);
    transition: all 0.2s ease;
    outline: none;
    box-sizing: border-box;
}

.form-group input:focus,
.form-textarea:focus {
    border-color: var(--primary);
    box-shadow: 0 0 0 3px rgba(37, 99, 235, 0.1);
    background: var(--bg-primary);
}

.form-group input::placeholder {
    color: var(--text-tertiary);
}

/* --- Panel de preview (vista previa) --- */
.editor-preview {
    position: sticky;
    top: 88px;
    max-height: calc(100vh - 100px);
    overflow-y: auto;
}

/* Scrollbar del preview */
.editor-preview::-webkit-scrollbar {
    width: 4px;
}

.editor-preview::-webkit-scrollbar-track {
    background: transparent;
}

.editor-preview::-webkit-scrollbar-thumb {
    background: var(--border-color);
    border-radius: var(--radius-full);
}

.preview-paper {
    padding: 1.5rem;
}

.paper-content {
    background: white;
    padding: 3rem 2.5rem;
    border: 1px solid var(--border-color);
    border-radius: var(--radius-md);
    box-shadow: 
        var(--shadow-md),
        0 0 0 1px rgba(0, 0, 0, 0.03);
    min-height: 600px;
    font-size: 13px;
    line-height: 1.8;
    color: #1a1a1a;
    position: relative;
}

/* Efecto de "papel apilado" */
.paper-content::after {
    content: '';
    position: absolute;
    bottom: -4px;
    left: 6px;
    right: 6px;
    height: 4px;
    background: #f0f0f0;
    border-radius: 0 0 var(--radius-md) var(--radius-md);
    border: 1px solid var(--border-color);
    border-top: none;
}

.paper-title {
    text-align: center;
    font-size: 18px;
    font-weight: 800;
    letter-spacing: 2px;
    margin-bottom: 2rem;
    padding-bottom: 1rem;
    border-bottom: 2px solid #1a1a1a;
}

.paper-subtitle {
    font-size: 14px;
    font-weight: 700;
    margin-top: 1.5rem;
    margin-bottom: 0.75rem;
    text-transform: uppercase;
    letter-spacing: 1px;
    color: #333;
}

.paper-text {
    margin-bottom: 0.75rem;
    text-align: justify;
    transition: color 0.2s ease;
}

.paper-text strong {
    color: var(--primary);
    transition: color 0.3s ease;
}

/* --- Firmas --- */
.paper-signatures {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 3rem;
    margin-top: 4rem;
    padding-top: 2rem;
}

.signature-block {
    text-align: center;
}

.signature-line {
    width: 100%;
    height: 1px;
    background: #999;
    margin-bottom: 0.5rem;
}

.signature-block p {
    font-size: 12px;
    color: #666;
}

/* --- Animaciones del editor --- */
@keyframes slideUp {
    from { opacity: 0; transform: translateY(8px); }
    to { opacity: 1; transform: translateY(0); }
}

@keyframes fadeIn {
    from { opacity: 0; }
    to { opacity: 1; }
}