:root {
    --sfp-primario: #007bff;
    --sfp-secundario: #FF6300;
    --sfp-primario-halo: rgba(0, 123, 255, 0.15);
    --sfp-border: #e4e7eb;
    --sfp-bg: #ffffff;
    --sfp-text: #1f2937;
    --sfp-muted: #6b7280;
    --sfp-error: #d9534f;
    --sfp-success: #2a8d2a;
}

.sfp-wrap {
    font-family: 'Poppins', system-ui, -apple-system, Segoe UI, Roboto, sans-serif;
    background: var(--sfp-bg);
    color: var(--sfp-text);
    max-width: 960px;
    margin: 24px auto;
    padding: 28px;
    border: 1px solid var(--sfp-border);
    border-radius: 12px;
    box-shadow: 0 4px 16px rgba(0, 0, 0, 0.05);
    box-sizing: border-box;
}

.sfp-wrap * {
    box-sizing: border-box;
}

.sfp-header {
    text-align: center;
    margin-bottom: 24px;
}

.sfp-header h2 {
    margin: 0;
    color: var(--sfp-primario);
    font-size: 1.6rem;
    font-weight: 600;
}

.sfp-logo {
    max-height: 60px;
    margin-bottom: 12px;
}

.sfp-subtitle {
    margin: 4px 0 0;
    color: var(--sfp-muted);
    font-size: 0.9rem;
    text-transform: uppercase;
    letter-spacing: 0.05em;
}

.sfp-form {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(220px, 1fr));
    gap: 16px;
    margin-bottom: 20px;
}

.sfp-field {
    display: flex;
    flex-direction: column;
}

.sfp-field label {
    font-weight: 600;
    font-size: 0.9rem;
    margin-bottom: 6px;
}

.sfp-field input,
.sfp-field select {
    width: 100%;
    padding: 11px 12px;
    border: 1px solid var(--sfp-border);
    border-radius: 8px;
    font: inherit;
    background: #fff;
    transition: border-color 0.15s, box-shadow 0.15s;
}

.sfp-field input:focus,
.sfp-field select:focus {
    outline: none;
    border-color: var(--sfp-primario);
    box-shadow: 0 0 0 3px var(--sfp-primario-halo);
}

.sfp-hint {
    display: block;
    margin-top: 6px;
    color: var(--sfp-muted);
    font-size: 0.8rem;
}

.sfp-errors {
    grid-column: 1 / -1;
    display: none;
    padding: 10px 14px;
    background: #fdecea;
    border: 1px solid #f5c6cb;
    border-radius: 8px;
    color: var(--sfp-error);
    font-size: 0.9rem;
}

.sfp-errors.sfp-visible {
    display: block;
}

.sfp-errors p {
    margin: 4px 0;
}

.sfp-btn-primary,
.sfp-btn-secondary {
    grid-column: 1 / -1;
    padding: 12px 20px;
    font: inherit;
    font-weight: 600;
    border: none;
    border-radius: 8px;
    cursor: pointer;
    transition: background-color 0.2s, transform 0.05s;
    text-align: center;
    text-decoration: none;
    display: inline-block;
}

.sfp-btn-primary {
    background: var(--sfp-primario);
    color: #fff;
}

.sfp-btn-primary:hover,
.sfp-btn-primary:focus {
    background: var(--sfp-secundario);
}

.sfp-btn-secondary {
    background: #f1f5f9;
    color: var(--sfp-text);
    grid-column: auto;
}

.sfp-btn-secondary:hover {
    background: #e2e8f0;
}

.sfp-btn-primary:active,
.sfp-btn-secondary:active {
    transform: translateY(1px);
}

.sfp-loader {
    display: none;
    justify-content: center;
    padding: 30px 0;
}

.sfp-loader.sfp-visible {
    display: flex;
}

.sfp-loader span {
    width: 36px;
    height: 36px;
    border: 3px solid #e4e7eb;
    border-top-color: var(--sfp-primario);
    border-radius: 50%;
    animation: sfp-spin 0.7s linear infinite;
}

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

.sfp-resultado {
    margin-top: 16px;
}

.sfp-resumen {
    background: #f8fafc;
    border: 1px solid var(--sfp-border);
    border-radius: 10px;
    padding: 18px 20px;
    margin-bottom: 16px;
}

.sfp-resumen h3 {
    margin: 0 0 14px;
    color: var(--sfp-primario);
    font-size: 1.1rem;
}

.sfp-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(180px, 1fr));
    gap: 12px;
}

.sfp-grid > div {
    display: flex;
    flex-direction: column;
    padding: 10px 12px;
    background: #fff;
    border-radius: 6px;
    border: 1px solid var(--sfp-border);
}

.sfp-grid span {
    color: var(--sfp-muted);
    font-size: 0.78rem;
    text-transform: uppercase;
    letter-spacing: 0.04em;
}

.sfp-grid strong {
    font-size: 1.05rem;
    color: var(--sfp-text);
    margin-top: 2px;
}

.sfp-actions {
    display: flex;
    flex-wrap: wrap;
    gap: 10px;
    margin: 14px 0;
}

.sfp-actions button,
.sfp-actions a {
    flex: 0 1 auto;
    padding: 10px 16px;
    font-size: 0.9rem;
}

.sfp-tabla-wrap h3 {
    margin: 16px 0 10px;
    color: var(--sfp-primario);
    font-size: 1rem;
}

.sfp-tabla-wrap.sfp-hidden .sfp-tabla-scroll {
    display: none;
}

.sfp-tabla-scroll {
    overflow-x: auto;
    border: 1px solid var(--sfp-border);
    border-radius: 8px;
}

.sfp-tabla {
    width: 100%;
    border-collapse: collapse;
    font-size: 0.88rem;
    min-width: 600px;
}

.sfp-tabla th,
.sfp-tabla td {
    padding: 9px 10px;
    text-align: right;
    border-bottom: 1px solid var(--sfp-border);
}

.sfp-tabla th:first-child,
.sfp-tabla td:first-child,
.sfp-tabla th:nth-child(2),
.sfp-tabla td:nth-child(2) {
    text-align: left;
}

.sfp-tabla thead th {
    background: #f1f5f9;
    color: var(--sfp-text);
    font-weight: 600;
    font-size: 0.82rem;
    text-transform: uppercase;
    letter-spacing: 0.03em;
}

.sfp-tabla tbody tr:last-child td {
    border-bottom: none;
}

.sfp-tabla tbody tr:nth-child(odd) {
    background: #fafbfc;
}

.sfp-disclaimer {
    margin-top: 18px;
    padding-top: 14px;
    border-top: 1px dashed var(--sfp-border);
    color: var(--sfp-muted);
    font-size: 0.82rem;
    text-align: center;
}

/* Responsive */
@media (max-width: 600px) {
    .sfp-wrap {
        padding: 18px;
        margin: 12px 8px;
    }
    .sfp-header h2 {
        font-size: 1.3rem;
    }
    .sfp-form {
        grid-template-columns: 1fr;
    }
}

/* Print */
@media print {
    body * {
        visibility: hidden !important;
    }
    .sfp-wrap,
    .sfp-wrap * {
        visibility: visible !important;
    }
    .sfp-wrap {
        position: absolute;
        left: 0;
        top: 0;
        width: 100%;
        margin: 0;
        padding: 12px;
        border: none;
        box-shadow: none;
    }
    .sfp-form,
    .sfp-actions,
    .sfp-loader,
    .sfp-errors {
        display: none !important;
    }
    .sfp-tabla-wrap.sfp-hidden .sfp-tabla-scroll {
        display: block !important;
    }
    .sfp-tabla {
        min-width: 0;
        font-size: 0.75rem;
    }
}