.srf-wrapper {
    max-width: 820px;
    margin: 40px auto;
    padding: 0 15px;
}

.srf-card {
    background: #ffffff;
    border: 1px solid #e5e7eb;
    border-radius: 14px;
    box-shadow: 0 8px 24px rgba(0,0,0,0.06);
    padding: 28px;
}

.srf-title {
    margin: 0 0 8px 0;
    font-size: 28px;
    font-weight: 700;
    color: #111827;
}

.srf-subtitle {
    margin: 0 0 24px 0;
    font-size: 15px;
    color: #6b7280;
    line-height: 1.5;
}

.srf-alerta {
    margin-bottom: 18px;
    padding: 12px 14px;
    border-radius: 10px;
    font-size: 14px;
}

    .srf-alerta.ok {
        background: #ecfdf5;
        color: #065f46;
        border: 1px solid #a7f3d0;
    }

    .srf-alerta.error {
        background: #fef2f2;
        color: #991b1b;
        border: 1px solid #fecaca;
    }

.srf-row {
    display: flex;
    flex-wrap: wrap;
    gap: 16px;
    margin-bottom: 18px;
}

.srf-col-6 {
    flex: 1 1 calc(50% - 8px);
    min-width: 260px;
}

.srf-col-12 {
    width: 100%;
}

.srf-label {
    display: block;
    margin-bottom: 7px;
    font-size: 14px;
    font-weight: 600;
    color: #1f2937;
}

.srf-input,
.srf-select,
.srf-textarea {
    width: 100%;
    border: 1px solid #d1d5db;
    border-radius: 10px;
    padding: 12px 14px;
    font-size: 14px;
    color: #111827;
    background: #fff;
    box-sizing: border-box;
}

    .srf-input:focus,
    .srf-select:focus,
    .srf-textarea:focus {
        outline: none;
        border-color: #111111;
        box-shadow: 0 0 0 3px rgba(0,0,0,0.08);
    }

.srf-textarea {
    min-height: 150px;
    resize: vertical;
}

.srf-help {
    margin-top: 6px;
    font-size: 12px;
    color: #6b7280;
}

.srf-validator {
    display: block;
    margin-top: 5px;
    font-size: 12px;
    color: #b91c1c;
}

.srf-actions {
    margin-top: 8px;
    display: flex;
    align-items: center;
    gap: 12px;
    flex-wrap: wrap;
}

.srf-btn {
    background: #111111;
    color: #ffffff;
    border: none;
    border-radius: 10px;
    padding: 12px 22px;
    font-size: 14px;
    font-weight: 600;
    cursor: pointer;
}

    .srf-btn:hover {
        background: #222222;
    }

.srf-note {
    font-size: 12px;
    color: #6b7280;
}

@media (max-width: 768px) {
    .srf-card {
        padding: 20px;
    }

    .srf-title {
        font-size: 24px;
    }
}