/* ═══════════════════════════════════════════════════════════════════════════
   CARGA MASIVA — Agrega al final de frontend/css/style.css
   Prefijo .cm- para no colisionar con estilos existentes
═══════════════════════════════════════════════════════════════════════════ */

/* ── Contenedor principal ─────────────────────────────────────────────── */
.cm-card {
    border: 1.5px solid #e5e7eb;
    border-radius: 14px;
    overflow: hidden;
    margin-bottom: 20px;
    background: #fff;
    box-shadow: 0 1px 4px rgba(0, 0, 0, .05);
}

/* ── Cabecera colapsable ──────────────────────────────────────────────── */
.cm-card-header {
    display: flex;
    align-items: center;
    justify-content: space-between;
    padding: 12px 18px;
    background: #f9fafb;
    cursor: pointer;
    font-weight: 700;
    font-size: .88rem;
    color: #374151;
    border-bottom: 1.5px solid transparent;
    transition: background .15s;
    user-select: none;
    gap: 10px;
}

.cm-card-header:hover {
    background: #f3f4f6;
}

.cm-card-header.open {
    background: #ecfdf5;
    color: #065f46;
    border-bottom-color: #d1fae5;
}

.cm-card-header span {
    display: flex;
    align-items: center;
    gap: 8px;
}

/* ── Chevron ──────────────────────────────────────────────────────────── */
.cm-chevron {
    font-size: .8rem;
    transition: transform .25s;
    color: #9ca3af;
    flex-shrink: 0;
}

.cm-chevron.open {
    transform: rotate(180deg);
    color: #059669;
}

/* ── Cuerpo ───────────────────────────────────────────────────────────── */
.cm-card-body {
    padding: 16px 18px 18px;
}

/* ── Hint / instrucciones CSV ─────────────────────────────────────────── */
.cm-hint {
    font-size: .8rem;
    color: #6b7280;
    background: #f9fafb;
    border: 1px dashed #d1d5db;
    border-radius: 8px;
    padding: 10px 14px;
    margin-bottom: 14px;
    line-height: 1.7;
}

.cm-hint code {
    display: inline-block;
    background: #e5e7eb;
    color: #1f2937;
    border-radius: 5px;
    padding: 2px 8px;
    font-size: .77rem;
    font-family: 'Courier New', monospace;
    margin: 2px 0;
    word-break: break-all;
}

.cm-hint small {
    display: block;
    margin-top: 5px;
    color: #059669;
    font-weight: 600;
}

/* ── Fila de controles ────────────────────────────────────────────────── */
.cm-row {
    display: flex;
    align-items: center;
    gap: 10px;
    flex-wrap: wrap;
}

/* ── Label/input file ─────────────────────────────────────────────────── */
.cm-file-label {
    flex: 1;
    min-width: 200px;
    display: inline-flex;
    align-items: center;
    gap: 8px;
    padding: 9px 14px;
    border: 1.5px solid #d1d5db;
    border-radius: 10px;
    background: #fff;
    cursor: pointer;
    font-size: .83rem;
    color: #374151;
    font-weight: 500;
    transition: border-color .15s, background .15s;
    overflow: hidden;
    white-space: nowrap;
}

.cm-file-label:hover {
    border-color: var(--primary, #059669);
    background: #f0fdf4;
}

.cm-file-label.has-file {
    border-color: var(--primary, #059669);
    color: #065f46;
    background: #f0fdf4;
}

.cm-file-label input[type="file"] {
    display: none;
}

.cm-file-label span {
    overflow: hidden;
    text-overflow: ellipsis;
    white-space: nowrap;
}

/* ── Botón subir ──────────────────────────────────────────────────────── */
.cm-btn {
    display: inline-flex;
    align-items: center;
    gap: 7px;
    padding: 9px 18px;
    background: linear-gradient(135deg, var(--primary, #059669), var(--primary-dark, #047857));
    color: #fff;
    border: none;
    border-radius: 10px;
    font-size: .85rem;
    font-weight: 700;
    cursor: pointer;
    transition: opacity .18s;
    white-space: nowrap;
    font-family: 'Inter', sans-serif;
    flex-shrink: 0;
}

.cm-btn:hover:not(:disabled) {
    opacity: .88;
}

.cm-btn:disabled {
    opacity: .5;
    cursor: not-allowed;
}

/* ── Loader ───────────────────────────────────────────────────────────── */
.cm-loader {
    display: flex;
    align-items: center;
    gap: 8px;
    margin-top: 12px;
    font-size: .82rem;
    color: #6b7280;
    font-weight: 600;
}

.cm-spinner {
    width: 16px;
    height: 16px;
    border: 2.5px solid #d1d5db;
    border-top-color: var(--primary, #059669);
    border-radius: 50%;
    animation: cm-spin .7s linear infinite;
    flex-shrink: 0;
}

@keyframes cm-spin {
    to { transform: rotate(360deg); }
}

/* ── Resultado ────────────────────────────────────────────────────────── */
.cm-result {
    margin-top: 14px;
    font-size: .83rem;
}

.cm-result:empty {
    display: none;
}

.cm-ok {
    background: #ecfdf5;
    color: #065f46;
    border: 1.5px solid #a7f3d0;
    border-radius: 10px;
    padding: 10px 14px;
    font-weight: 700;
    margin-bottom: 8px;
    display: flex;
    align-items: center;
    gap: 6px;
}

.cm-errors-title {
    font-weight: 700;
    color: #991b1b;
    margin: 8px 0 6px;
    font-size: .82rem;
}

.cm-errors-list {
    background: #fef2f2;
    border: 1.5px solid #fecaca;
    border-radius: 10px;
    padding: 10px 14px;
    max-height: 220px;
    overflow-y: auto;
}

.cm-error-item {
    padding: 5px 0;
    border-bottom: 1px solid #fee2e2;
    color: #7f1d1d;
    font-size: .79rem;
    line-height: 1.5;
}

.cm-error-item:last-child {
    border-bottom: none;
}

.cm-error-item strong {
    color: #991b1b;
}

/* ── Responsive ───────────────────────────────────────────────────────── */
@media (max-width: 600px) {
    .cm-row {
        flex-direction: column;
        align-items: stretch;
    }

    .cm-btn {
        width: 100%;
        justify-content: center;
    }

    .cm-file-label {
        min-width: unset;
        width: 100%;
    }
}